Amazon Elastic Compute Cloud
User Guide for Microsoft Windows
API Version 2014-06-15
Amazon Elastic Compute Cloud User Guide for Microsoft
Windows
Amazon Elastic Compute Cloud: User Guide for Microsoft Windows
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All other trademarks not owned by Amazon are the property of their respective owners, who may or may not be affiliated with, connected
to, or sponsored by Amazon.
Amazon Elastic Compute Cloud User Guide for Microsoft
Windows
Table of Contents
What Is Amazon EC2? ................................................................................................................... 1
Features of Amazon EC2 ........................................................................................................ 1
How to Get Started with Amazon EC2 ....................................................................................... 2
Related Services ................................................................................................................... 3
Accessing Amazon EC2 ......................................................................................................... 3
Pricing for Amazon EC2 ......................................................................................................... 4
Basic Infrastructure ................................................................................................................ 5
Amazon Machine Images and Instances ............................................................................ 5
Regions and Availability Zones ........................................................................................ 6
Storage ....................................................................................................................... 6
Root Device Volume ....................................................................................................... 8
Networking and Security ............................................................................................... 10
AWS Identity and Access Management ........................................................................... 10
Differences between Windows Server and an Amazon EC2 Windows Instance ....................... 11
Designing Your Applications to Run on Amazon EC2 Windows Instances ............................... 12
Setting Up .................................................................................................................................. 14
Sign Up for AWS ................................................................................................................. 14
Create an IAM User ............................................................................................................. 15
Create a Key Pair ................................................................................................................ 16
Create a Virtual Private Cloud (VPC) ....................................................................................... 17
Create a Security Group ....................................................................................................... 17
Getting Started: Launch and Connect .............................................................................................. 20
Overview ............................................................................................................................ 20
Launch a Windows Instance .................................................................................................. 21
Connect to Your Windows Instance ......................................................................................... 23
Create a CloudWatch Alarm to Monitor Your Instance ................................................................. 24
Clean Up ............................................................................................................................ 26
Best Practices ............................................................................................................................. 28
Tutorial: Deploy a WordPress Blog .................................................................................................. 30
Prerequisites ...................................................................................................................... 30
Installing the Microsoft Web Platform Installer ........................................................................... 31
Installing WordPress ............................................................................................................ 31
Configure Security Keys ........................................................................................................ 32
Administrative Information ..................................................................................................... 33
Making Your WordPress Site Public ......................................................................................... 33
Tutorial: Set Up a Windows HPC Cluster .......................................................................................... 35
Prerequisites ...................................................................................................................... 35
Task 1: Set Up Your Active Directory Domain Controller .............................................................. 35
Creating Security Groups for Active Directory ................................................................... 36
Creating the Domain Controller for your HPC cluster .......................................................... 36
Configuring the Domain Controller for Your HPC Cluster ..................................................... 37
Task 2: Configure Your Head Node .......................................................................................... 37
Creating Security Groups for Your HPC Cluster ................................................................. 37
Launch an Instance for the HPC Head Node .................................................................... 38
Install the HPC Pack .................................................................................................... 38
Configure Your HPC Cluster on the Head Node ................................................................. 39
Task 3: Set Up the Compute Node .......................................................................................... 39
Launch an Instance for the HPC Compute Node ............................................................... 39
Install the HPC Pack on the Compute Node ...................................................................... 40
Add the Compute Node to Your HPC Cluster .................................................................... 40
Task 4: Scale Your HPC Compute Nodes (Optional) ................................................................... 41
Running the Lizard Performance Measurement Application ......................................................... 42
Create_AD_security.bat ........................................................................................................ 42
Create-HPC-sec-group.bat .................................................................................................... 43
Amazon Machine Images .............................................................................................................. 45
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Using an AMI ......................................................................................................................
Creating Your Own AMI .........................................................................................................
Buying, Sharing, and Selling AMIs ..........................................................................................
Deregistering Your AMI .........................................................................................................
AWS Windows AMIs .............................................................................................................
Update Schedule .........................................................................................................
Configuration Settings ..................................................................................................
Xen Drivers ................................................................................................................
Keeping Your Instances Up-to-Date .................................................................................
Upgrading from Windows Server 2008 to Windows Server 2012 ...........................................
AMI Types ..........................................................................................................................
Launch Permissions .....................................................................................................
Storage for the Root Device ...........................................................................................
Finding an AMI ....................................................................................................................
Finding a Windows AMI Using the Amazon EC2 Console ...................................................
Finding an AMI Using the Command Line ........................................................................
Shared AMIs .......................................................................................................................
Finding Shared AMIs ....................................................................................................
Making an AMI Public ...................................................................................................
Sharing an AMI with Specific AWS Accounts ....................................................................
Using Bookmarks ........................................................................................................
Paid AMIs ...........................................................................................................................
Selling Your AMI ..........................................................................................................
Finding a Paid AMI .......................................................................................................
Purchase a Paid AMI ....................................................................................................
Getting the Product Code for Your Instance ......................................................................
Using Paid Support ......................................................................................................
Bills for Paid and Supported AMIs ...................................................................................
Managing Your AWS Marketplace Subscriptions ................................................................
Creating an Amazon EBS-Backed Windows AMI .......................................................................
Creating an AMI from an Instance ...................................................................................
Creating an Instance Store-Backed Windows AMI .....................................................................
Instance Store-Backed Windows AMIs .............................................................................
Preparing to Create an Instance Store-Backed Windows AMI ..............................................
Bundling an Instance Store-Backed Windows Instance .......................................................
Registering an Instance Store-Backed Windows AMI .........................................................
Copying an AMI ...................................................................................................................
AMI Copy ...................................................................................................................
Copying an Amazon EC2 AMI ........................................................................................
Copying an Amazon EC2 AMI with Encrypted Volumes ......................................................
Stopping a Pending AMI Copy Operation .........................................................................
Deregistering Your AMI .........................................................................................................
Cleaning Up Your Amazon EBS-Backed AMI ....................................................................
Cleaning Up Your Instance Store-Backed AMI ...................................................................
Instances ...................................................................................................................................
Instance Types ....................................................................................................................
Available Instance Types ...............................................................................................
Hardware Specifications ...............................................................................................
T2 Instances ...............................................................................................................
I2 Instances ................................................................................................................
HI1 Instances ..............................................................................................................
HS1 Instances ............................................................................................................
R3 Instances ..............................................................................................................
GPU Instances ............................................................................................................
T1 Micro Instances ......................................................................................................
EBS-Optimized Instances .............................................................................................
Placement Groups .......................................................................................................
Resizing Instances .......................................................................................................
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Instance Metadata and User Data .........................................................................................
Retrieving Instance Metadata .......................................................................................
Retrieving User Data ..................................................................................................
Retrieving Dynamic Data .............................................................................................
Instance Metadata Categories ......................................................................................
Importing and Exporting Instances ........................................................................................
Prerequisites .............................................................................................................
Importing a VM into Amazon EC2 .................................................................................
Exporting Amazon EC2 Instances .................................................................................
Troubleshooting .........................................................................................................
Instance Lifecycle ......................................................................................................................
Instance Launch ................................................................................................................
Instance Stop and Start (Amazon EBS-backed instances only) ..................................................
Instance Reboot ................................................................................................................
Instance Retirement ...........................................................................................................
Instance Termination ..........................................................................................................
Differences Between Reboot, Stop, and Terminate ...................................................................
Launch .............................................................................................................................
Launching an Instance ................................................................................................
Launching an Instance From an Existing Instance ............................................................
Launching an Instance from a Backup ...........................................................................
Launching an AWS Marketplace Instance .......................................................................
Connect ...........................................................................................................................
Prerequisites .............................................................................................................
Connecting to Windows ...............................................................................................
Transfer Files to Windows Server Instances from Windows ................................................
Stop and Start ...................................................................................................................
Overview ..................................................................................................................
Stopping and Starting Your Instances ............................................................................
Modifying a Stopped Instance ......................................................................................
Reboot .............................................................................................................................
Retire ...............................................................................................................................
Identifying Instances Scheduled for Retirement ...............................................................
Working with Instances Scheduled for Retirement ............................................................
Terminate .........................................................................................................................
Instance Termination ..................................................................................................
Terminating an Instance ..............................................................................................
Enabling Termination Protection ....................................................................................
Changing the Shutdown Behavior .................................................................................
Preserving Amazon EBS Volumes on Instance Termination ...............................................
Configure Instances ...................................................................................................................
Using EC2Config ...............................................................................................................
Overview of EC2Config Tasks ......................................................................................
Ec2 Service Properties ...............................................................................................
EC2Config Settings Files .............................................................................................
Sending Logs to Amazon CloudWatch Logs ....................................................................
Installing the Latest Version of EC2Config ......................................................................
Stopping, Deleting, or Uninstalling EC2Config .................................................................
Upgrading PV Drivers .........................................................................................................
Xen Drivers ...............................................................................................................
Upgrading PV Drivers on Your Windows Server 2008 and 2008 R2 Instances .......................
Upgrading Your Citrix Xen Guest Agent Service ...............................................................
Upgrading PV Drivers on Your Windows Server 2003 Instance ...........................................
Troubleshooting .........................................................................................................
Setting the Password ..........................................................................................................
Changing the Administrator Password After Connecting ....................................................
Resetting an Administrator Password that's Lost or Expired ...............................................
Configuring a Secondary Private IP Address ...........................................................................
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Prerequisites .............................................................................................................
Step 1: Configure Static IP Addressing on Your Windows Instance .....................................
Step 2: Configure a Secondary Private IP Address for Your Windows Instance .....................
Step 3: Configure Applications to Use the Secondary Private IP Address .............................
Setting the Time .................................................................................................................
Changing the Time Zone .............................................................................................
Configuring Network Time Protocol (NTP) ......................................................................
Configuring Time Settings for Windows Server 2008 and later ............................................
Configuring Time Settings for Windows Server 2003 ........................................................
Monitoring ................................................................................................................................
Automated and Manual Monitoring ........................................................................................
Automated Monitoring Tools .........................................................................................
Manual Monitoring Tools ..............................................................................................
Best Practices for Monitoring ................................................................................................
Monitoring the Status of Your Instances ..................................................................................
Monitoring Instances with Status Checks .......................................................................
Monitoring Events for Your Instances .............................................................................
Monitoring Your Instances with CloudWatch ............................................................................
Enabling or Disabling Detailed Monitoring on an Amazon EC2 Instance ...............................
View Amazon EC2 Metrics ..........................................................................................
Get Statistics for Metrics .............................................................................................
Graphing Metrics .......................................................................................................
Create a CloudWatch Alarm .........................................................................................
Create Alarms That Stop or Terminate an Instance ...........................................................
Monitoring Scripts for Amazon EC2 Instances .........................................................................
Amazon CloudWatch Monitoring Scripts for Windows .......................................................
Network and Security .................................................................................................................
Key Pairs ..........................................................................................................................
Creating Your Key Pair Using Amazon EC2 .....................................................................
Importing Your Own Key Pair to Amazon EC2 ..................................................................
Retrieving the Public Key for Your Key Pair ......................................................................
Verifying Your Key Pair's Fingerprint ..............................................................................
Deleting Your Key Pair .................................................................................................
Security Groups .................................................................................................................
Security Groups for EC2-Classic ...................................................................................
Security Groups for EC2-VPC ......................................................................................
Security Group Rules .................................................................................................
Default Security Groups ..............................................................................................
Custom Security Groups .............................................................................................
Creating a Security Group ...........................................................................................
Describing Your Security Groups ...................................................................................
Adding Rules to a Security Group .................................................................................
Deleting Rules from a Security Group ............................................................................
Deleting a Security Group ............................................................................................
API and Command Overview .......................................................................................
Controlling Access .............................................................................................................
Network Access to Your Instance ..................................................................................
Amazon EC2 Permission Attributes ...............................................................................
IAM and Amazon EC2 ................................................................................................
IAM Policies ..............................................................................................................
IAM Roles .................................................................................................................
Network Access .........................................................................................................
Amazon VPC ....................................................................................................................
Benefits of Using a VPC ..............................................................................................
Differences Between EC2-Classic and EC2-VPC .............................................................
Amazon VPC Documentation .......................................................................................
Supported Platforms ...................................................................................................
Migrating from EC2-Classic to a VPC ............................................................................
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Instance IP Addressing .......................................................................................................
Private Addresses and Internal DNS Hostnames .............................................................
Public IP Addresses and External DNS Hostnames .........................................................
Differences Between EC2-Classic and EC2-VPC .............................................................
Determining Your Public, Private, and Elastic IP Addresses ...............................................
Assigning a Public IP Address ......................................................................................
Multiple Private IP Addresses .......................................................................................
Elastic IP Addresses ...........................................................................................................
Elastic IP Addresses in EC2-Classic ..............................................................................
Elastic IP Addresses in a VPC ......................................................................................
Differences Between EC2-Classic and EC2-VPC .............................................................
Allocating an Elastic IP Address ...................................................................................
Describing Your Elastic IP Addresses .............................................................................
Associating an Elastic IP Address with a Running Instance ...............................................
Associating an Elastic IP Address with a Different Running Instance ...................................
Releasing an Elastic IP Address ...................................................................................
Using Reverse DNS for Email Applications .....................................................................
Elastic IP Address Limit ..............................................................................................
Elastic Network Interfaces ...................................................................................................
Private IP Addresses Per ENI Per Instance Type ..............................................................
Creating a Management Network ..................................................................................
Use Network and Security Appliances in Your VPC ..........................................................
Creating Dual-homed Instances with Workloads/Roles on Distinct Subnets ..........................
Create a Low Budget High Availability Solution ................................................................
Best Practices for Configuring Network Interfaces ............................................................
Creating a Network Interface ........................................................................................
Deleting a Network Interface ........................................................................................
Viewing Details about a Network Interface ......................................................................
Attaching a Network Interface When Launching an Instance ..............................................
Attaching a Network Interface to a Stopped or Running Instance ........................................
Detaching a Network Interface from an Instance ..............................................................
Changing the Security Group of a Network Interface ........................................................
Changing the Source/Destination Checking of a Network Interface .....................................
Associating an Elastic IP Address with a Network Interface ...............................................
Disassociating an Elastic IP Address from a Network Interface ...........................................
Changing Termination Behavior for a Network Interface ....................................................
Adding or Editing a Description for a Network Interface .....................................................
Adding or Editing Tags for a Network Interface ................................................................
Enabling Enhanced Networking ............................................................................................
Requirements ............................................................................................................
Testing Whether Enhanced Networking Is Enabled ...........................................................
Enabling Enhanced Networking on Windows ..................................................................
Storage ....................................................................................................................................
Amazon EBS ....................................................................................................................
Features of Amazon EBS ............................................................................................
EBS Volumes ............................................................................................................
EBS Snapshots .........................................................................................................
EBS Encryption .........................................................................................................
EBS Performance ......................................................................................................
API and Command Overview .......................................................................................
Instance Store ...................................................................................................................
Instance Storage Concepts .........................................................................................
Instance Stores Available on Instance Types ...................................................................
Instance Store Device Names ......................................................................................
Instance Store Usage Scenarios ..................................................................................
Adding Instance Store Volumes to an AMI ......................................................................
Amazon S3 .......................................................................................................................
Amazon S3 and Amazon EC2 ......................................................................................
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Block Device Mapping ........................................................................................................
Block Device Mapping Concepts ...................................................................................
AMI Block Device Mapping ..........................................................................................
Instance Block Device Mapping ....................................................................................
Using Public Data Sets .......................................................................................................
Public Data Set Concepts ............................................................................................
Finding Public Data Sets .............................................................................................
Creating a Public Data Set Volume from a Snapshot ........................................................
Attaching and Mounting the Public Data Set Volume .........................................................
Resources and Tags ...................................................................................................................
Resource Locations ............................................................................................................
Listing and Filtering Your Resources ......................................................................................
Advanced Search .......................................................................................................
Listing Resources Using the Console ............................................................................
Filtering Resources Using the Console ..........................................................................
Listing and Filtering Using the CLI and API .....................................................................
Tagging Your Resources ......................................................................................................
Tag Basics ................................................................................................................
Tag Restrictions .........................................................................................................
Tagging Your Resources for Billing ................................................................................
Working with Tags in the Console ..................................................................................
API and CLI Overview .................................................................................................
Service Limits ....................................................................................................................
Viewing Your Current Limits .........................................................................................
Requesting a Limit Increase .........................................................................................
Usage Reports ..................................................................................................................
Available Reports .......................................................................................................
Getting Set Up for Usage Reports .................................................................................
Granting IAM Users Access to the Amazon EC2 Usage Reports ........................................
Instance Usage .........................................................................................................
Reserved Instance Utilization .......................................................................................
AWS Management Pack ..............................................................................................................
Overview of AWS Management Pack for System Center 2012 ...................................................
Overview of AWS Management Pack for System Center 2007 R2 ...............................................
Downloading .....................................................................................................................
Deploying .........................................................................................................................
Step 1: Installing the AWS Management Pack .................................................................
Step 2: Configuring the Watcher Node ...........................................................................
Step 3: Create an AWS Run As Account ........................................................................
Step 4: Run the Add Monitoring Wizard ..........................................................................
Using ...............................................................................................................................
Views .......................................................................................................................
Discoveries ...............................................................................................................
Monitors ...................................................................................................................
Rules .......................................................................................................................
Events .....................................................................................................................
Health Model .............................................................................................................
Customizing the AWS Management Pack .......................................................................
Troubleshooting .................................................................................................................
AWS Diagnostics for Microsoft Windows Server ..............................................................................
Analysis Rules ...................................................................................................................
Analyzing the Current Instance .............................................................................................
Collecting Data From an Offline Instance ................................................................................
Data File Storage ...............................................................................................................
Troubleshooting .........................................................................................................................
No console output ..............................................................................................................
Instance terminates immediately ...........................................................................................
"Password is not available" ..................................................................................................
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"Password not available yet" .................................................................................................
"Cannot retrieve Windows password" .....................................................................................
"Waiting for the metadata service" .........................................................................................
Remote Desktop can't connect to the remote computer ............................................................
RDP displays a black screen instead of the desktop .................................................................
"Unable to activate Windows" ...............................................................................................
"Windows is not genuine (0x80070005)" ................................................................................
"No Terminal Server License Servers available to provide a license" ............................................
Instance loses network connectivity or scheduled tasks don't run when expected ..........................
Document History ......................................................................................................................
AWS Glossary ...........................................................................................................................
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Features of Amazon EC2
What Is Amazon EC2?
Amazon Elastic Compute Cloud (Amazon EC2) provides scalable computing capacity in the Amazon
Web Services (AWS) cloud. Using Amazon EC2 eliminates your need to invest in hardware up front, so
you can develop and deploy applications faster. You can use Amazon EC2 to launch as many or as few
virtual servers as you need, configure security and networking, and manage storage. Amazon EC2 enables
you to scale up or down to handle changes in requirements or spikes in popularity, reducing your need
to forecast traffic.
For more information about cloud computing, see What is Cloud Computing?
Features of Amazon EC2
Amazon EC2 provides the following features:
• Virtual computing environments, known as instances
• Preconfigured templates for your instances, known as Amazon Machine Images (AMIs), that package
the bits you need for your server (including the operating system and additional software)
• Various configurations of CPU, memory, storage, and networking capacity for your instances, known
as instance types
• Secure login information for your instances using key pairs (AWS stores the public key, and you store
the private key in a secure place)
• Storage volumes for temporary data that's deleted when you stop or terminate your instance, known
as instance store volumes
• Persistent storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as
Amazon EBS volumes
• Multiple physical locations for your resources, such as instances and Amazon EBS volumes, known
as regions and Availability Zones
• A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your
instances using security groups
• Static IP addresses for dynamic cloud computing, known as Elastic IP addresses
• Metadata, known as tags, that you can create and assign to your Amazon EC2 resources
• Virtual networks you can create that are logically isolated from the rest of the AWS cloud, and that you
can optionally connect to your own network, known as virtual private clouds (VPCs)
For more information about the features of Amazon EC2, see the Amazon EC2 product page.
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How to Get Started with Amazon EC2
Amazon EC2 enables you to run any compatible Windows-based solution on our high-performance, reliable,
cost-effective, cloud computing platform. For more information, see Amazon EC2 Running Windows
Server & SQL.
For more information about running your website on AWS, see Websites & Website Hosting.
How to Get Started with Amazon EC2
The first thing you need to do is get set up to use Amazon EC2. After you are set up, you are ready to
complete the Getting Started tutorial for Amazon EC2. Whenever you need more information about a
feature of Amazon EC2, you can read the technical documentation.
Get Up and Running
• Setting Up with Amazon EC2 (p. 14)
• Getting Started with Amazon EC2 Windows Instances (p. 20)
Basics
• Amazon EC2 Basic Infrastructure for Windows (p. 5)
• Instance Types (p. 75)
• Tags (p. 433)
Networking and Security
• Amazon EC2 Key Pairs (p. 264)
• Security Groups (p. 268)
• Elastic IP Addresses (EIP) (p. 333)
• Amazon EC2 and Amazon VPC (p. 313)
Storage
• Amazon EBS (p. 355)
• Instance Store (p. 407)
Working with Windows Instances
• Differences between Windows Server and an Amazon EC2 Windows Instance (p. 11)
• Designing Your Applications to Run on Amazon EC2 Windows Instances (p. 12)
• Getting Started with AWS Web Application Hosting for Microsoft Windows
If you have questions about whether AWS is right for you, contact AWS Sales. If you have technical
questions about Amazon EC2, use the Amazon EC2 forum.
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Related Services
Related Services
You can provision Amazon EC2 resources, such as instances and volumes, directly using Amazon EC2.
You can also provision Amazon EC2 resources using other services in AWS. For more information, see
the following documentation:
• Auto Scaling Developer Guide
• AWS CloudFormation User Guide
• AWS Elastic Beanstalk Developer Guide
• AWS OpsWorks User Guide
To automatically distribute incoming application traffic across multiple instances, use Elastic Load Balancing. For more information, see Elastic Load Balancing Developer Guide.
To monitor basic statistics for your instances and Amazon EBS volumes, use Amazon CloudWatch. For
more information, see the Amazon CloudWatch Developer Guide.
To monitor the calls made to the Amazon EC2 API for your account, including calls made by the AWS
Management Console, command line tools, and other services, use AWS CloudTrail. For more information,
see the AWS CloudTrail User Guide.
To get a managed relational database in the cloud, use Amazon Relational Database Service (Amazon
RDS) to launch a database instance. Although you can set up a database on an EC2 instance, Amazon
RDS offers the advantage of handling your database management tasks, such as patching the software,
backing up, and storing the backups. For more information, see Amazon Relational Database Service
Developer Guide.
Accessing Amazon EC2
Amazon EC2 provides a web-based user interface, the Amazon EC2 console. If you've signed up for an
AWS account, you can access the Amazon EC2 console by signing into the AWS Management Console
and selecting EC2 from the console home page.
If you prefer to use a command line interface, you have several options:
AWS Command Line Interface (CLI)
Provides commands for a broad set of AWS products, and is supported on Windows, Mac, and Linux.
To get started, see AWS Command Line Interface User Guide. For more information about the
commands for Amazon EC2, see ec2 in the AWS Command Line Interface Reference.
Amazon EC2 Command Line Interface (CLI) Tools
Provides commands for Amazon EC2, Amazon EBS, and Amazon VPC, and is supported on Windows,
Mac, and Linux. To get started, see Setting Up the Amazon EC2 Command Line Interface Tools on
Windows and Commands (CLI Tools) in the Amazon EC2 Command Line Reference.
AWS Tools for Windows PowerShell
Provides commands for a broad set of AWS products for those who script in the PowerShell environment. To get started, see the AWS Tools for Windows PowerShell User Guide. For more information
about the cmdlets for Amazon EC2, see the AWS Tools for Windows PowerShell Reference.
Amazon EC2 provides a Query API. These requests are HTTP or HTTPS requests that use the HTTP
verbs GET or POST and a Query parameter named Action. For more information about the API actions
for Amazon EC2, see Actions in the Amazon EC2 API Reference.
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Pricing for Amazon EC2
If you prefer to build applications using language-specific APIs instead of submitting a request over HTTP
or HTTPS, AWS provides libraries, sample code, tutorials, and other resources for software developers.
These libraries provide basic functions that automate tasks such as cryptographically signing your requests,
retrying requests, and handling error responses, making it is easier for you to get started. For more information, see AWS SDKs and Tools.
Pricing for Amazon EC2
When you sign up for AWS, you can get started with Amazon EC2 for free using the AWS Free Tier.
Amazon EC2 provides the following purchasing options for instances:
On-Demand Instances
Pay for the instances that you use by the hour, with no long-term commitments or up-front payments.
Reserved Instances
Make a low, one-time, up-front payment for an instance, reserve it for a one- or three-year term, and
pay a significantly lower hourly rate for these instances.
Spot Instances
Specify the maximum hourly price that you are willing to pay to run a particular instance type. The
Spot Price fluctuates based on supply and demand, but you never pay more than the maximum price
you specified. If the Spot Price moves higher than your maximum price, Amazon EC2 shuts down
your Spot Instances.
For a complete list of charges and specific prices for Amazon EC2, see Amazon EC2 Pricing.
To calculate the cost of a sample provisioned environment, see AWS Economics Center.
To see your bill, go to your AWS Account Activity page. Your bill contains links to usage reports that
provide details about your bill. To learn more about AWS account billing, see AWS Account Billing.
If you have questions concerning AWS billing, accounts, and events, contact AWS Support.
For an overview of Trusted Advisor, a service that helps you optimize the costs, security, and performance
of your AWS environment, see AWS Trusted Advisor.
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Basic Infrastructure
Amazon EC2 Basic Infrastructure for Windows
As you get started with Amazon EC2, you'll benefit from understanding the components of its basic infrastructure and how they compare or contrast with your own data centers.
Concepts
• Amazon Machine Images and Instances (p. 5)
• Regions and Availability Zones (p. 6)
• Storage (p. 6)
• Root Device Volume (p. 8)
• Networking and Security (p. 10)
• AWS Identity and Access Management (p. 10)
• Differences between Windows Server and an Amazon EC2 Windows Instance (p. 11)
• Designing Your Applications to Run on Amazon EC2 Windows Instances (p. 12)
Amazon Machine Images and Instances
An Amazon Machine Image (AMI) is a template that contains a software configuration (for example, an
operating system, an application server, and applications). From an AMI, you launch instances, which
are copies of the AMI running as virtual servers in the cloud.
Amazon publishes many AMIs that contain common software configurations for public use. In addition,
members of the AWS developer community have published their own custom AMIs. You can also create
your own custom AMI or AMIs; doing so enables you to quickly and easily start new instances that have
everything you need. For example, if your application is a website or web service, your AMI could include
a web server, the associated static content, and the code for the dynamic pages. As a result, after you
launch an instance from this AMI, your web server starts, and your application is ready to accept requests.
You can launch different types of instances from a single AMI. An instance type essentially determines
the hardware of the host computer used for your instance. Each instance type offers different compute
and memory facilities. Select an instance type based on the amount of memory and computing power
that you need for the applications or software that you plan to run on the instance. For more information
about the hardware specifications for each Amazon EC2 instance type, see Instance Type Details. You
can also launch multiple instances from an AMI, as shown in the following figure.
Your Windows instances keep running until you stop or terminate them, or until they fail. If an instance
fails, you can launch a new one from the AMI.
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Regions and Availability Zones
Your AWS account has a limit on the number of instances that you can have running. For more information
about this limit, and how to request an increase, see How many instances can I run in Amazon EC2 in
the Amazon EC2 General FAQ.
Regions and Availability Zones
Amazon has data centers in different areas of the world (for example, North America, Europe, and Asia).
Correspondingly, Amazon EC2 is available to use in different regions. By launching instances in separate
regions, you can design your application to be closer to specific customers or to meet legal or other requirements. Prices for Amazon EC2 usage vary by region (for more information about pricing by region,
see Amazon EC2 Pricing).
Each region contains multiple distinct locations called Availability Zones. Each Availability Zone is engineered to be isolated from failures in other Availability Zones, and to provide inexpensive, low-latency
network connectivity to other zones in the same region. By launching instances in separate Availability
Zones, you can protect your applications from the failure of a single location.
For more information about the available regions and Availability Zones, see Using Regions and Availability Zones in the Amazon EC2 User Guide for Linux Instances.
Storage
When using Amazon EC2, you may have data that you need to store. Amazon EC2 offers the following
storage options:
• Amazon Elastic Block Store (Amazon EBS)
• Amazon EC2 Instance Store (p. 407)
• Amazon Simple Storage Service (Amazon S3)
The following figure shows the relationship between these types of storage.
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Storage
Amazon EBS Volumes
Amazon EBS volumes are the recommended storage option for the majority of use cases. Amazon EBS
provides your instances with persistent, block-level storage. Amazon EBS volumes are essentially hard
disks that you can attach to a running instance.
Amazon EBS is especially suited for applications that require a database, a file system, or access to raw
block-level storage.
As illustrated in the previous figure, you can attach multiple volumes to an instance. Also, to keep a backup
copy of your data, you can create a snapshot of an EBS volume, which is stored in Amazon S3. You can
create a new Amazon EBS volume from a snapshot, and attach it to another instance.You can also detach
a volume from an instance and attach it to a different instance. The following figure illustrates the life
cycle of an EBS volume.
For more information about Amazon EBS volumes, see Amazon Elastic Block Store (Amazon EBS) (p. 355).
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Root Device Volume
Instance Store
All instance types, with the exception of Micro instances, offer instance store, which provides your instances
with temporary, block-level storage. This is storage that is physically attached to the host computer. The
data on an instance store volume doesn't persist when the associated instance is stopped or terminated.
For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
Instance store is an option for inexpensive temporary storage. You can use instance store volumes if you
don't require data persistence.
Amazon S3
Amazon S3 is storage for the Internet. It provides a simple web service interface that enables you to store
and retrieve any amount of data from anywhere on the web. For more information about Amazon S3, see
the Amazon S3 product page.
Root Device Volume
When you launch an instance, the root device volume contains the image used to boot the instance. You
can launch an Amazon EC2 Windows instance using an AMI backed either by instance store or by Amazon
Elastic Block Store (Amazon EBS).
• Instances launched from an AMI backed by Amazon EBS use an Amazon EBS volume as the root
device. The root device volume of an Amazon EBS-backed AMI is an Amazon EBS snapshot. When
an instance is launched using an Amazon EBS-backed AMI, a root EBS volume is created from the
EBS snapshot and attached to the instance. The root device volume is then used to boot the instance.
• Instances launched from an AMI backed by instance store use an instance store volume as the
root device. The image of the root device volume of an instance store-backed AMI is initially stored in
Amazon S3. When an instance is launched using an instance store-backed AMI, the image of its root
device is copied from Amazon S3 to the root partition of the instance. The root device volume is then
used to boot the instance.
Important
The only Windows AMIs that can be backed by instance store are those for Windows Server
2003. Instance store-backed instances don't have the available disk space required for later
versions of Windows Server.
For a summary of the differences between instance store-backed AMIs and Amazon EBS-backed AMIs,
see Storage for the Root Device (p. 49).
Determining the Root Device Type of an AMI
You can determine the root device type of an AMI using the console or the command line.
To determine the root device type of an AMI using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click AMIs, and select the AMI.
3.
Check the value of Root Device Type in the Details tab as follows:
• If the value is ebs, this is an Amazon EBS-backed AMI.
• If the value is instance store, this is an instance store-backed AMI.
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Root Device Volume
To determine the root device type of an AMI using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-images (AWS CLI)
• ec2-describe-images (Amazon EC2 CLI)
• Get-EC2Image (AWS Tools for Windows PowerShell)
Determining the Root Device Type of an Instance
You can determine the root device type of an instance using the console or the command line.
To determine the root device type of an instance using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click Instances, and select the instance.
3.
Check the value of Root device type in the Description tab as follows:
• If the value is ebs, this is an Amazon EBS-backed instance.
• If the value is instance store, this is an instance store-backed instance.
To determine the root device type of an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-instances (AWS CLI)
• ec2-describe-instances (Amazon EC2 CLI)
• Get-EC2Instance (AWS Tools for Windows PowerShell)
Changing the Root Device Volume to Persist
Using the console, you can change the DeleteOnTermination attribute when you launch an instance.
To change this attribute for a running instance, you must use the command line.
To change the root device volume of an instance to persist at launch using the console
1.
2.
Open the Amazon EC2 console.
From the Amazon EC2 console dashboard, click Launch Instance.
3.
4.
5.
On the Choose an Amazon Machine Image (AMI) page, choose the AMI to use and click Select.
Follow the wizard to complete the Choose an Instance Type and Configure Instance Details
pages.
On the Add Storage page, deselect the Delete On Termination check box for the root volume.
6.
Complete the remaining wizard pages, and then click Launch.
You can verify the setting by viewing details for the root device volume on the instance's details pane.
Next to Block devices, click the entry for the root device volume. By default, Delete on termination is
True. If you change the default behavior, Delete on termination is False.
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Networking and Security
To change the root device volume of an instance to persist using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-instance-attribute (AWS CLI)
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Networking and Security
You can launch instances in one of two platforms: EC2-Classic and EC2-VPC. An instance that's launched
into EC2-Classic is assigned a public IP address. By default, an instance that's launched into EC2-VPC
is assigned public IP address only if it's launched into a default VPC. An instance that's launched into a
nondefault VPC must be specifically assigned a public IP address at launch, or you must modify your
subnet's default public IP addressing behavior. For more information about EC2-Classic and EC2-VPC,
see Supported Platforms (p. 316).
Instances can fail or terminate for reasons outside of your control. If one fails and you launch a replacement
instance, the replacement has a different public IP address than the original. However, if your application
needs a static IP address, Amazon EC2 offers Elastic IP addresses. For more information, see Amazon
EC2 Instance IP Addressing (p. 324).
You can use security groups to control who can access your instances. These are analogous to an inbound
network firewall that enables you to specify the protocols, ports, and source IP ranges that are allowed
to reach your instances.You can create multiple security groups and assign different rules to each group.
You can then assign each instance to one or more security groups, and we use the rules to determine
which traffic is allowed to reach the instance. You can configure a security group so that only specific IP
addresses or specific security groups have access to the instance. For more information, see Amazon
EC2 Security Groups (p. 268).
AWS Identity and Access Management
AWS Identity and Access Management (IAM) enables you to do the following:
• Create users and groups under your AWS account
• Assign unique security credentials to each user under your AWS account
• Control each user's permissions to perform tasks using AWS resources
• Allow the users in another AWS account to share your AWS resources
• Create roles for your AWS account and define the users or services that can assume them
• Use existing identities for your enterprise to grant permissions to perform tasks using AWS resources
By using IAM with Amazon EC2, you can control whether users in your organization can perform a task
using specific Amazon EC2 API actions and whether they can use specific AWS resources.
For more information about IAM, see the following:
• Creating an IAM Group and Users (p. 277)
• IAM Policies for Amazon EC2 (p. 278)
• IAM Roles for Amazon EC2 (p. 306)
• Identity and Access Management (IAM)
• Using IAM
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Differences between Windows Server and an Amazon
EC2 Windows Instance
Differences between Windows Server and an
Amazon EC2 Windows Instance
After you launch your Amazon EC2 Windows instance, it behaves like a traditional server running Windows
Server. For example, both Windows Server and an Amazon EC2 instance can be used to run your web
applications, conduct batch processing, or manage applications requiring large-scale computations.
However, there are important differences between the server hardware model and the cloud computing
model. The way an Amazon EC2 instance runs is not the same as the way a traditional server running
Windows Server runs.
Before you begin launching Amazon EC2 Windows instances, you should be aware that the architecture
of applications running on cloud servers can differ significantly from the architecture for traditional application models running on your hardware. Implementing applications on cloud servers requires a shift in
your design process.
The following table describes some key differences between Windows Server and an Amazon EC2
Windows instance.
Windows Server
Amazon EC2 Windows Instance
Resources and capacity are physically limited.
Resources and capacity are scalable.
You pay for the infrastructure, even if you don't use You pay for the usage of the infrastructure. We stop
it.
charging you for the instance as soon as you stop
or terminate it.
Occupies physical space and must be maintained Doesn't occupy physical space and does not
on a regular basis.
require regular maintenance.
Starts with push of the power button (known as
cold booting).
Starts with the launch of the instance.
You can keep the server running until it is time to You can keep the server running, or stop and
shut it down, or put it in a sleep or hibernation state restart it (during which the instance is moved to a
(during which the server is powered down).
new host computer).
When you shut down the server, all resources
remain intact and in the state they were in when
you switched it off. Information you stored on the
hard drives persists and can be accessed whenever
it's needed. You can restore the server to the
running state by powering it on.
When you terminate the instance, its infrastructure
is no longer available to you. You can't connect to
or restart an instance after you've terminated it.
However, you can create an image from your
instance while it's running, and launch new
instances from the image at any time.
A traditional server running Windows Server goes through the states shown in the following diagram.
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Designing Your Applications to Run on Amazon EC2
Windows Instances
An Amazon EC2 Windows instance is similar to the traditional Windows Server, as you can see by comparing the following diagram with the previous diagram for Windows Server. After you launch an instance,
it briefly goes into the pending state while registration takes place, then it goes into the running state. The
instance remains active until you stop or terminate it. You can't restart an instance after you terminate it.
You can create a backup image of your instance while it's running, and launch a new instance from that
backup image.
Designing Your Applications to Run on Amazon
EC2 Windows Instances
It is important that you consider the differences mentioned in the previous section when you design your
applications to run on Amazon EC2 Windows instances.
Applications built for Amazon EC2 use the underlying computing infrastructure on an as-needed basis.
They draw on necessary resources (such as storage and computing) on demand in order to perform a
job, and relinquish the resources when done. In addition, they often dispose of themselves after the job
is done. While in operation, the application scales up and down elastically based on resource requirements.
An application running on an Amazon EC2 instance can terminate and recreate the various components
at will in case of infrastructure failures.
When designing your Windows applications to run on Amazon EC2, you can plan for rapid deployment
and rapid reduction of compute and storage resources, based on your changing needs.
When you run an Amazon EC2 Windows instance, you don't need to provision the exact system package
of hardware, software, and storage, the way you do with Windows Server. Instead, you can focus on using
a variety of cloud resources to improve the scalability and overall performance of your Windows application.
With Amazon EC2, designing for failure and outages is an integral and crucial part of the architecture.
As with any scalable and redundant system, architecture of your system should account for computing,
network, and storage failures.You have to build mechanisms in your applications that can handle different
kinds of failures. The key is to build a modular system with individual components that are not tightly
coupled, can interact asynchronously, and treat one another as black boxes that are independently
scalable.Thus, if one of your components fails or is busy, you can launch more instances of that component
without breaking your current system.
Another key element to designing for failure is to distribute your application geographically. Replicating
your application across geographically distributed regions improves high availability in your system.
Amazon EC2 infrastructure is programmable and you can use scripts to automate the deployment process,
to install and configure software and applications, and to bootstrap your virtual servers.
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Designing Your Applications to Run on Amazon EC2
Windows Instances
You should implement security in every layer of your application architecture running on an Amazon EC2
Windows instance. If you are concerned about storing sensitive and confidential data within your Amazon
EC2 environment, you should encrypt the data before uploading it.
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Sign Up for AWS
Setting Up with Amazon EC2
If you've already signed up for Amazon Web Services (AWS), you can start using Amazon EC2 immediately.
You can open the Amazon EC2 console, click Launch Instance, and follow the steps in the launch wizard
to launch your first instance.
If you haven't signed up for AWS yet, or if you need assistance launching your first instance, complete
the following tasks to get set up to use Amazon EC2:
1. Sign Up for AWS (p. 14)
2. Create an IAM User (p. 15)
3. Create a Key Pair (p. 16)
4. Create a Virtual Private Cloud (VPC) (p. 17)
5. Create a Security Group (p. 17)
Sign Up for AWS
When you sign up for Amazon Web Services (AWS), your AWS account is automatically signed up for
all services in AWS, including Amazon EC2. You are charged only for the services that you use.
With Amazon EC2, you pay only for what you use. If you are a new AWS customer, you can get started
with Amazon EC2 for free. For more information, see AWS Free Tier.
If you have an AWS account already, skip to the next task. If you don't have an AWS account, use the
following procedure to create one.
To create an AWS account
1.
Open http://aws.amazon.com, and then click Sign Up.
2.
Follow the on-screen instructions.
Part of the sign-up procedure involves receiving a phone call and entering a PIN using the phone
keypad.
Note your AWS account number, because you'll need it for the next task.
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Create an IAM User
Services in AWS, such as Amazon EC2, require that you provide credentials when you access them, so
that the service can determine whether you have permission to access its resources. The console requires
your password. You can create access keys for your AWS account to access the command line interface
or API. However, we don't recommend that you access AWS using the credentials for your AWS account;
we recommend that you use AWS Identity and Access Management (IAM) instead. Create an IAM user,
and then add the user to an IAM group with administrative permissions or and grant this user administrative
permissions. You can then access AWS using a special URL and the credentials for the IAM user.
If you signed up for AWS but have not created an IAM user for yourself, you can create one using the
IAM console.
To create the Administrators group
1.
Sign in to the AWS Management Console and open the IAM console at https://console.aws.amazon.com/iam/.
2.
3.
In the navigation pane, click Groups and then click Create New Group.
In the Group Name box, type Administrators and then click Next Step.
4.
5.
In the Select Policy Template section, click Select next to the Administrator Access policy template.
Click Next Step and then click Create Group.
Your new group is listed under Group Name.
To create the IAM user, add the user to the Administrators group, and create a password
for the user
1.
2.
3.
In the navigation pane, click Users and then click Create New Users.
In box 1, type a user name and then click Create.
Click Download Credentials and save your access key in a secure place.You will need your access
key for programmatic access to AWS using the AWS CLI, the AWS SDKs, or the HTTP APIs.
Note
You cannot retrieve the secret access key after you complete this step; if you misplace it
you must create a new one.
After you have downloaded your access key, click Close.
4.
5.
6.
In the content pane, under User Name, click the name of the user you just created. (You might need
to scroll down to find the user in the list.)
In the content pane, in the Groups section, click Add User to Groups.
Select the Administrators group and then click Add to Groups.
7.
In the content pane, in the Security Credentials section (you might need to scroll down to find this
section), under Sign-In Credentials, click Manage Password.
8.
Select Assign a custom password and then type and confirm a password. When you are finished,
click Apply.
To sign in as this new IAM user, sign out of the AWS console, then use the following URL, where
your_aws_account_id is your AWS account number without the hyphens (for example, if your AWS account
number is 1234-5678-9012, your AWS account ID is 123456789012):
https://your_aws_account_id.signin.aws.amazon.com/console/
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Enter the IAM user name and password that you just created. When you're signed in, the navigation bar
displays "your_user_name @ your_aws_account_id".
If you don't want the URL for your sign-in page to contain your AWS account ID, you can create an account
alias. From the IAM dashboard, click Create Account Alias and enter an alias, such as your company
name. To sign in after you create an account alias, use the following URL:
https://your_account_alias.signin.aws.amazon.com/console/
To verify the sign-in link for IAM users for your account, open the IAM console and check under IAM
users sign-in link on the dashboard.
For more information about IAM, see IAM and Amazon EC2 (p. 276).
Create a Key Pair
AWS uses public-key cryptography to secure the login information for your instance. You specify the
name of the key pair when you launch your instance, then provide the private key to obtain the administrator password for your Windows instance so you can log in using RDP.
If you haven't created a key pair already, you can create one using the Amazon EC2 console. Note that
if you plan to launch instances in multiple regions, you'll need to create a key pair in each region. For
more information about regions, see Regions and Availability Zones (p. 6).
To create a key pair
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select a region for the key pair. You can select any region that's available
to you, regardless of your location. However, key pairs are specific to a region; for example, if you
plan to launch an instance in the US West (Oregon) region, you must create a key pair for the instance
in the US West (Oregon) region.
3.
Click Key Pairs in the navigation pane.
4.
Click Create Key Pair.
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Create a Virtual Private Cloud (VPC)
5.
Enter a name for the new key pair in the Key pair name field of the Create Key Pair dialog box, and
then click Create. Choose a name that is easy for you to remember, such as your IAM user name,
followed by -key-pair, plus the region name. For example, me-key-pair-uswest2.
6.
The private key file is automatically downloaded by your browser. The base file name is the name
you specified as the name of your key pair, and the file name extension is .pem. Save the private
key file in a safe place.
Important
This is the only chance for you to save the private key file. You'll need to provide the name
of your key pair when you launch an instance and the corresponding private key each time
you connect to the instance.
For more information, see Amazon EC2 Key Pairs (p. 264).
Create a Virtual Private Cloud (VPC)
Amazon VPC enables you to launch AWS resources into a virtual network that you've defined. If you
have a default VPC, you can skip this section and move to the next task, Create a Security Group (p. 17).
To determine whether you have a default VPC, see Supported Platforms in the Amazon EC2 Console (p. 316). Otherwise, you can create a nondefault VPC in your account using the steps below.
Important
If your account supports EC2-Classic in a region, then you do not have a default VPC in that
region. T2 instances must be launched into a VPC.
To create a nondefault VPC
1.
2.
3.
4.
5.
Open the Amazon VPC console at https://console.aws.amazon.com/vpc/.
From the navigation bar, select a region for the VPC. VPCs are specific to a region, so you should
select the same region in which you created your key pair.
On the VPC dashboard, click Start VPC Wizard.
On the Step 1: Select a VPC Configuration page, ensure that VPC with a Single Public Subnet
is selected, and click Select.
On the Step 2: VPC with a Single Public Subnet page, enter a friendly name for your VPC in the
VPC name field. Leave the other default configuration settings, and click Create VPC. On the confirmation page, click OK.
For more information about Amazon VPC, see What is Amazon VPC? in the Amazon VPC User Guide.
Create a Security Group
Security groups act as a firewall for associated instances, controlling both inbound and outbound traffic
at the instance level. You must add rules to a security group that enable you to connect to your instance
from your IP address using RDP. You can also add rules that allow inbound and outbound HTTP and
HTTPS access from anywhere.
Note that if you plan to launch instances in multiple regions, you'll need to create a security group in each
region. For more information about regions, see Regions and Availability Zones (p. 6).
Tip
You'll need the public IP address of your local computer, which you can get using a service. For
example, we provide the following service: http://checkip.amazonaws.com/. To locate another
service that provides your IP address, use the search phrase "what is my IP address." If you are
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Create a Security Group
connecting through an Internet service provider (ISP) or from behind a firewall without a static
IP address, you need to find out the range of IP addresses used by client computers.
To create a security group with least privilege
1.
Open the Amazon EC2 console.
2.
From the navigation bar, select a region for the security group. Security groups are specific to a region,
so you should select the same region in which you created your key pair.
3.
4.
5.
Click Security Groups in the navigation pane.
Click Create Security Group.
Enter a name for the new security group and a description. Choose a name that is easy for you to
remember, such as your IAM user name, followed by _SG_, plus the region name. For example,
me_SG_uswest2.
In the VPC list, ensure that your default VPC is selected; it's marked with an asterisk (*).
6.
Note
If your account supports EC2-Classic, select the VPC that you created in the previous task.
7.
On the Inbound tab, create the following rules (click Add Rule for each new rule), and then click
Create:
• Select HTTP from the Type list, and make sure that Source is set to Anywhere (0.0.0.0/0).
• Select HTTPS from the Type list, and make sure that Source is set to Anywhere (0.0.0.0/0).
• Select RDP from the Type list. In the Source box, ensure Custom IP is selected, and specify the
public IP address of your computer or network in CIDR notation.To specify an individual IP address
in CIDR notation, add the routing prefix /32. For example, if your IP address is 203.0.113.25,
specify 203.0.113.25/32. If your company allocates addresses from a range, specify the entire
range, such as 203.0.113.0/24.
Caution
For security reasons, we don't recommend that you allow RDP access from all IP addresses (0.0.0.0/0) to your instance, except for testing purposes and only for a short
time.
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Create a Security Group
For more information, see Amazon EC2 Security Groups (p. 268).
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Overview
Getting Started with Amazon EC2
Windows Instances
This tutorial provides a hands-on introduction to using Amazon EC2 using the AWS Management Console,
a point-and-click web-based interface. We'll launch and connect to a Windows instance.
Important
Before you begin, be sure that you've completed the steps in Setting Up with Amazon EC2 (p. 14).
Overview
The instance is an Amazon EBS-backed instance (meaning that the root volume is an Amazon EBS
volume) running Windows Server. You can either specify the Availability Zone in which your instance
runs, or let us select an Availability Zone for you. When you launch your instance, you secure it by specifying a key pair and a security group. When you connect to your instance, you must specify the private
key of the key pair that you specified when launching your instance. Your instance looks like a traditional
host, and you can interact with it as you would any computer running Windows Server.
To complete this tutorial
1.
Launch a Windows Instance (p. 21)
2.
Connecting to Your Windows Instance Using RDP (p. 139)
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Launch a Windows Instance
3.
4.
(Optional) Create a CloudWatch Alarm to Monitor Your Instance (p. 24).
Clean Up (p. 26)
If you'd prefer to launch a Linux instance, see this tutorial in the Amazon EC2 User Guide for Linux Instances: Getting Started with Amazon EC2 Linux Instances.
Launch a Windows Instance
You can launch a Windows instance using the AWS Management Console as described following. An
instance is a virtual server in the AWS cloud. With Amazon EC2, you can set up and configure the operating system and applications that run on your instance.
To launch an instance
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select the region for the instance. For this tutorial, you can use the default
region. Otherwise, this choice is important because some Amazon EC2 resources can be shared
between regions, while others can't. For example, if you'd like to connect your instance to an existing
Amazon EBS volume, you must select the same region as the volume.
3.
4.
On the console dashboard, click Launch Instance.
The Choose an Amazon Machine Image (AMI) page displays a list of basic configurations called
Amazon Machine Images (AMIs) that serve as templates for your instance. Select the 64-bit version
of Microsoft Windows Server 2008 R2. Notice that this configuration is marked Free tier eligible.
On the Choose an Instance Type page, you can select the hardware configuration for your instance.
The t2.micro instance type is selected by default. Alternatively, select All generations from the filter
list, and then select the t1.micro instance type. Note that these are the only instance types eligible
for the free tier.
5.
Note
T2 instances (p. 77) must be launched into a VPC. If your AWS account supports EC2Classic and you do not have any VPCs, the launch wizard creates a VPC for you. Otherwise,
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Launch a Windows Instance
if you have one or more VPCs, click Next: Configure Instance Details to select a VPC
and subnet.
6.
Click Review and Launch to let the wizard complete the other configuration settings for you.
7.
On the Review Instance Launch page, you can review the settings for your instance.
Under Security Groups, you'll see that the wizard created and selected a security group for you.
The security group includes basic firewall rules that enable you to connect to your instance. For a
Windows instance, you connect through Remote Desktop Protocol (RDP) on port 3389.
Caution
The security group the wizard authorizes all IP addresses to access your instance over the
specified ports (for example, RDP). This is acceptable for the short exercise in this tutorial,
but it's unsafe for production environments. In production, you'll authorize only a specific IP
address or range of IP addresses to access your instance.
If you have an existing security group you'd prefer to use, you can click Edit security groups, and
select your group on the Configure Security Group page. When done, click Review and Launch
to return to the Review Instance Launch page.
8.
9.
Click Launch.
In the Select an existing key pair or create a new key pair dialog box, you can select Choose an
existing key pair, to select a key pair you already created.
Alternatively, you can create a new key pair. Select Create a new key pair, enter a name for the
key pair, and then click Download Key Pair. This is the only chance for you to save the private key
file, so be sure to download it. Save the private key file in a safe place. You'll need to provide the
name of your key pair when you launch an instance and the corresponding private key each time
you connect to the instance.
Caution
Don't select the Proceed without a key pair option. If you launch your instance without a
key pair, then you can't connect to it.
When you are ready, select the acknowledgement check box, and then click Launch Instances.
10. A confirmation page lets you know that your instance is launching. Click View Instances to close
the confirmation page and return to the console.
11. On the Instances page, you can view the status of the launch. It takes a short time for an instance
to launch. When you launch an instance, its initial state is pending. After the instance starts, its state
changes to running and it receives a public DNS name. (If the Public DNS column is hidden, click
the Show/Hide icon in the top right corner of the Instances page and select Public DNS.)
12. Record the public DNS name for your instance because you'll need it for the next step.
13. (Optional) After your instance is launched, you can view its security group rules. From the Instances
page, select the instance. In the Description tab, find Security groups and click view rules.
As you can see, if you used the security group the wizard created for you, it contains one rule that
allows RDP traffic from any IP source to port 3389. If you launch a Windows instance running IIS
and SQL, the wizard creates a security group that contains additional rules to allow traffic to port 80
for HTTP (for IIS) and port 1433 for MS SQL.
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Connect to Your Windows Instance
Connect to Your Windows Instance
To connect to a Windows instance, you must retrieve the initial administrator password and then specify
this password when you connect to your instance using Remote Desktop.
The name of the administrator account depends on the language of the operating system. For example,
for English, it's Administrator, for French it's Administrateur, and for Portuguese it's Administrador. For
more information, see Localized Names for Administrator Account in Windows in the Microsoft TechNet
Wiki.
Windows instances are limited to two simultaneous remote connections at one time. If you attempt a third
connection, an error will occur. For more information, see Configure the Number of Simultaneous Remote
Connections Allowed for a Connection.
To connect to your Windows instance
1.
In the Amazon EC2 console, select the instance, and then click Connect.
2.
In the Connect To Your Instance dialog box, click Get Password (it will take a few minutes after
the instance is launched before the password is available).
Click Browse and navigate to the private key file you created when you launched the instance. Select
the file and click Open to copy the entire contents of the file into contents box.
Click Decrypt Password. The console displays the default administrator password for the instance
in the Connect To Your Instance dialog box, replacing the link to Get Password shown previously
with the actual password.
Record the default administrator password, or copy it to the clipboard. You need this password to
connect to the instance.
Click Download Remote Desktop File. Your browser prompts you to either open or save the .rdp
file. Either option is fine. When you have finished, you can click Close to dismiss the Connect To
Your Instance dialog box.
3.
4.
5.
6.
• If you opened the .rdp file, you'll see the Remote Desktop Connection dialog box.
• If you saved the .rdp file, navigate to your downloads directory, and double-click the .rdp file to
display the dialog box.
7.
8.
You may get a warning that the publisher of the remote connection is unknown. If you are using
Remote Desktop Connection from a Windows PC, click Connect to connect to your instance. If
you are using Microsoft Remote Desktop on a Mac, skip the next step.
When prompted, log in to the instance, using the administrator account for the operating system and
the password that you recorded or copied previously. If your Remote Desktop Connection already
has an administrator account set up, you might have to click the Use another account option and
enter the user name and password manually.
Note
Sometimes copying and pasting content can corrupt data. If you encounter a "Password
Failed" error when you log in, try typing in the password manually.
9.
Due to the nature of self-signed certificates, you may get a warning that the security certificate could
not be authenticated. Use the following steps to verify the identity of the remote computer, or simply
click Yes or Continue to continue if you trust the certificate.
a.
If you are using Remote Desktop Connection from a Windows PC, click View certificate. If
you are using Microsoft Remote Desktop on a Mac, click Show Certificate.
b.
Click the Details tab, and scroll down to the Thumbprint entry on a Windows PC, or the SHA1
Fingerprints entry on a Mac. This is the unique identifier for the remote computer's security
certificate.
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Create a CloudWatch Alarm to Monitor Your Instance
c.
d.
e.
f.
In the Amazon EC2 console, select the instance, click Actions, and then click Get System Log.
In the system log output, look for an entry labelled RDPCERTIFICATE-THUMBPRINT. If this value
matches the thumbprint or fingerprint of the certificate, you have verified the identity of the remote
computer.
If you are using Remote Desktop Connection from a Windows PC, return to the Certificate
dialog box and click OK. If you are using Microsoft Remote Desktop on a Mac, return to the
Verify Certificate and click Continue.
If you are using Remote Desktop Connection from a Windows PC, click Yes in the Remote
Desktop Connection window to connect to your instance. If you are using Microsoft Remote
Desktop on a Mac, log in to the instance as prompted, using the default Administrator account
and the default administrator password that you recorded or copied previously.
Note
On a Mac, you may need to switch spaces to see the Microsoft Remote Desktop login
screen. For more information on spaces, see http://support.apple.com/kb/PH14155.
Create a CloudWatch Alarm to Monitor Your Instance
With Amazon CloudWatch, you can monitor various aspects of your instance and set up alarms based
on criteria you choose. For example, you could configure an alarm to send you an email when an instance's
CPU exceeds 70 percent.
Because you just launched your instance, it is unlikely that the CPU will exceed this threshold, so instead,
set a CloudWatch alarm to send you an email when your instance's CPU is lower than 70 percent for five
minutes. For more information about CloudWatch see What is Amazon CloudWatch in the Amazon
CloudWatch Developer Guide.
To create an alarm to monitor your instance
1.
2.
3.
4.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region to match the region in which you launched the instance.
In the navigation pane, click Alarms.
Click Create Alarm, and then in the CloudWatch Metrics by Category pane, select EC2 Metrics.
5.
Select a metric using the following procedure, and then click Next:
a.
In the list of metrics, select the row that contains CPUUtilization for your instance.
b.
Select Average from the statistic drop-down list.
c.
Select a period from the period drop-down list, for example: 5 Minutes.
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Create a CloudWatch Alarm to Monitor Your Instance
6.
Define the alarm using the following procedure, and then click Create Alarm:
a.
Under Alarm Threshold, in the Name box, enter a unique name for the alarm, for example:
myTestAlarm.
b.
In the Description field, enter a description of the alarm, for example: CPU usage is lower
than 70 percent.
c.
Under Whenever, next to is, select < from the list and enter 70 in the box.
d.
Under Whenever, next to for, enter 5 in the box.
e.
f.
We display a graphical representation of the threshold under Alarm Preview.
Under Actions, in the Whenever this alarm drop-down list, select State is ALARM.
In the Send notification to list, select an existing Amazon SNS topic or create a new one. To
create a new Amazon SNS topic, click Create topic. In Send notification to, enter a name for
the new Amazon SNS topic. In Email list, enter a comma-separated list of email addresses.
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Clean Up
7.
We'll send a notification email to the email address you specified with a link to an opt-in confirmation
page for your notification. After you opt in, we'll send a notification email when the instance has been
running for more than 5 minutes at less than 70 percent CPU utilization.
Clean Up
Now that you've completed this tutorial, you can clean up the resources that you created. You could also
customize your instance to your needs and keep using it.
Important
Remember, unless you are within the AWS Free Tier, as soon as your instance starts to boot,
you're billed for each hour or partial hour that you keep the instance running (even if the instance
is idle).
When you've decided that you no longer need the instance, you need to clean up these resources:
• The Amazon CloudWatch alarm
• The instance
To delete your CloudWatch alarm
1.
2.
3.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
In the navigation pane, click Alarms.
In the alarms list, select the alarm you created, and then click Delete.
Terminating an instance effectively deletes it; you can't reconnect to an instance after you've terminated
it.
If you launched an instance that is not within the AWS Free Tier, you'll stop incurring charges for that instance as soon as the instance status changes to shutting down or terminated.
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Clean Up
To terminate your instance
1.
In the navigation pane, click Instances. In the list of instances, locate the instance you want to terminate.
2.
3.
Right-click the instance, and then click Terminate.
Click Yes, Terminate when prompted for confirmation.
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Best Practices for Amazon EC2
This checklist is intended to help you get the maximum benefit from and satisfaction with Amazon EC2.
Security and Network
• Manage access to AWS resources and APIs using identity federation, IAM users, and IAM roles. Establish credential management policies and procedures for creating, distributing, rotating, and revoking
AWS access credentials. For more information, see IAM Best Practices in the Using IAM guide.
• Implement the least permissive rules for your security group. For more information, see Security Group
Rules (p. 269).
• Regularly patch, update, and secure the operating system and applications on your instance. For more
information about updating Windows Server, go to Windows Server Update Services on the Microsoft
website.
• Launch your instances into a VPC instead of EC2-Classic. Note that if you created your AWS account
after 2013-12-04, we automatically launch your instances into a VPC. For more information about the
benefits, see Amazon EC2 and Amazon Virtual Private Cloud (VPC) (p. 313).
Storage
• Understand the implications of the root device type for data persistence, backup, and recovery. For
more information, see Storage for the Root Device (p. 49).
• Use separate Amazon EBS volumes for the operating system versus your data. Ensure that the volume
with your data persists after instance termination.
• Use the instance store available for your instance to store temporary data. Remember that the data
stored in instance store is deleted when you stop or terminate your instance. If you use instance store
for database storage, ensure that you have a cluster with a replication factor that ensures fault tolerance.
Resource Management
• Use instance metadata and custom resource tags to track and identify your AWS resources. For more
information, see Instance Metadata and User Data (p. 101) and Tagging Your Amazon EC2 Resources (p. 433).
• View your current limits for Amazon EC2. Plan to request any limit increases in advance of the time
that you'll need them. For more information, see Amazon EC2 Service Limits (p. 440).
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Backup and Recovery
• Regularly back up your instance using Amazon EBS snapshots (p. 385) or a backup tool.
• Deploy critical components of your application across multiple Availability Zones, and replicate your
data appropriately.
• Design your applications to handle dynamic IP addressing when your instance restarts. For more information, see Amazon EC2 Instance IP Addressing (p. 324).
• Monitor and respond to events. For more information, see Monitoring Amazon EC2 (p. 190).
• Ensure that you are prepared to handle failover. For a basic solution, you can manually attach a network
interface or Elastic IP address to a replacement instance. For more information, see Elastic Network
Interfaces (ENI) (p. 338). For an automated solution, you can use Auto Scaling. For more information,
see the Auto Scaling Developer Guide.
• Regularly test the process of recovering your instances and Amazon EBS volumes if they fail.
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Prerequisites
Tutorial: Deploying a WordPress
Blog on Your Amazon EC2
Windows Instance
This tutorial will help you install and deploy a WordPress blog on an Amazon EC2 Windows instance.
If you'd prefer to host your WordPress blog on a Linux instance, see Tutorial: Hosting a WordPress Blog
with Amazon EC2 in the Amazon EC2 User Guide for Linux Instances.
Prerequisites
Before you get started, be sure that you do the following:
1. Launch an Amazon EC2 instance from the Microsoft Windows Server 2008 R2 base AMI. For information about launching an instance, see Getting Started with Amazon EC2 Windows Instances (p. 20).
2. Use the AWS free usage tier (if eligible) to launch and use the free Windows t2.micro instance for 12
months. You can use the AWS free usage tier for launching new applications, testing existing applications, or simply gaining hands-on experience with AWS. For more information about eligibility and the
highlights, see the AWS Free Usage Tier product page.
Important
If you've launched a regular instance and use it to deploy the WordPress website, you will
incur the standard Amazon EC2 usage fees for the instance until you terminate it. For more
information about Amazon EC2 usage rates, go to the Amazon EC2 product page.
3. Ensure that the security group in which you're launching your instance has ports 80 (HTTP), 443
(HTTPS), and 3389 (RDP) open for inbound traffic. Ports 80 and 443 allow computers outside of the
instance to connect with HTTP and HTTPS. If these ports are not open, the WordPress site can't be
accessed from outside the instance. Port 3389 allows you to connect to the instance with Remote
Desktop Protocol.
4. Connect to your instance.
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Installing the Microsoft Web Platform Installer
Installing the Microsoft Web Platform Installer
You can use the Microsoft Web Platform Installer to install and configure WordPress on your server. This
tool simplifies deployment of Web applications and Web sites to IIS servers. For more information, see
Microsoft Web Platform Installer.
1.
Verify that you've met the conditions in Prerequisites (p. 30).
2.
Disable Internet Explorer Enhanced Security Configuration.
3.
a.
In your Windows instance, click Start, point to Administrative Tools, and then click Server
Manager.
b.
Click Server Manager in the navigation pane on the left, look for Configure IE ESC in the Security Information section of the main pane on the right. Click Configure IE ESC.
c.
d.
Under Administrators, click Off and click OK.
Close the Server Manager window.
In the Windows instance, download and install the latest version of the Microsoft Web Platform Installer.
a.
b.
c.
Click Start, point to All Programs, and click Internet Explorer.
Click Yes in the pop-up window to accept the recommended security settings for Internet Explorer.
Paste the following URL into the Internet Explorer address bar: http://www.microsoft.com/web/downloads/platform.aspx
d.
Click the Free Download button on the Microsoft Web Platform Installer page to download the
installer and then click Run to run the installer.
Installing WordPress
Now that the Web Platform Installer is installed, you can use it install and configure WordPress on your
server.
To install WordPress
1.
2.
3.
Open the Web Platform Installer and click Applications.
Select WordPress, click Add, and then click Install.
On the Prerequisites page, select MySQL for the database to use. Enter the desired administrator
password for your MySQL database in the Password and Re-type Password boxes, and then click
Continue.
Note
For more information about creating a secure password, see http://www.pctools.com/guides/
password/. Do not reuse an existing password, and make sure to store this password in a
safe place.
4.
5.
6.
Click I Accept for the list of third-party application software, Microsoft products (including the IIS web
server), and components. After the Web Platform Installer finishes installing the software, you are
prompted to configure your new site.
On the Configure page, clear the default application name in the 'WordPress' application name:
box and leave it blank, then leave the default information in the other boxes and click Continue.
Click Yes to accept that the contents of the folder will be overwritten.
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Configure Security Keys
Configure Security Keys
WordPress allows you to generate and enter unique authentication keys and salts for your site. These
key and salt values provide a layer of encryption to the browser cookies that WordPress users store on
their local machines. Basically, adding long, random values here makes your site more secure.
For more information about security keys, see http://codex.wordpress.org/Editing_wp-config.php#Security_Keys.
To configure security keys
1.
2.
Visit https://api.wordpress.org/secret-key/1.1/salt/ to randomly generate a set of key values that you
can copy and paste into the installation wizard. The following steps will show you how to modify these
values in Notepad to work with a Windows installation.
Copy all of the text in that page to your clipboard. It should look similar to the example below.
Note
The values below are for example purposes only; do not use these values for your installation.
define('AUTH_KEY',
'3#U$$+[RXN8:b^-L 0(WU_+ c+WFkI~c]o]bHw+)/Aj[wTwSiZ<Qb[mghEXcRh-');
define('SECURE_AUTH_KEY', 'Zsz._P=l/|y.Lq)XjlkwS1y5NJ76E6EJ.AV0pCKZZB,*~*r
[email protected];+(ndLg');
define('LOGGED_IN_KEY',
'ju}qwre3V*+8f_zOWf?{LlGsQ][email protected]^,8x>)Y
|;(^[Iw]Pi+LG#A4R?7N`YB3');
define('NONCE_KEY',
'P(g62HeZxEes|LnI^i=H,[XwK9I&[2s|:?0N}VJM%?;v2v]v+;+^[email protected]::Cj');
define('AUTH_SALT',
'C$DpB4Hj[JK:?{ql`sRVa:{:7yShy([email protected]+`JJVb1fk%_Bx*M4(qc[Qg%JT!h');
define('SECURE_AUTH_SALT', 'd!uRu#}+q#{f$Z?Z9uFPG.${+S{n~1M&%@~gL>U>NV<[email protected]');
define('LOGGED_IN_SALT',
';j{00P*owZf)kVD+FVLn-~
>.|Y%Ug4#I^*LVd9QeZ^&XmK|e(76miC+&W&+^0P/');
define('NONCE_SALT',
'-97r*V/cgxLmp?Zy4zUU4r99QQ_rGs2LTd%P;|_e1tS)8_B/,.6[=UK<J_y9?JWG');
3.
4.
5.
6.
Open a Notepad window by clicking Start, All Programs, Accessories, and then Notepad.
Paste the copied text into the Notepad window.
Windows WordPress installations do not accept the dollar sign ($) in key and salt values, so they
need to be replaced with another character (such as S). In the Notepad window, click Edit, then click
Replace.
In the Find what box, type $.
7.
In the Replace with box, type S.
8.
Click Replace All to replace all of the dollar signs with S characters.
9. Close the Replace window.
10. Paste the modified key and salt values from the Notepad window into their corresponding boxes in
the installation wizard. For example, the AUTH_KEY value in the Notepad window should be pasted
into the Authentication Key box in the wizard.
Do not include the single quotes or other text surrounding the values, just the actual value as in the
example shown below.
The modified AUTH_KEY line from the Notepad window:
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Administrative Information
define('AUTH_KEY',
'3#USS+[RXN8:b^-L 0(WU_+ c+WFkI~c]o]bHw+)/Aj[wTwSiZ<Qb[mghEXcRh-');
Paste this text into the Authentication Key box of the wizard:
3#USS+[RXN8:b^-L 0(WU_+ c+WFkI~c]o]-bHw+)/Aj[wTwSiZ<Qb[mghEXcRh-
11. Click Continue and Finish to complete the Web Platform Installer wizard.
Administrative Information
When you complete the Web Platform Installer wizard, a browser window opens to your WordPress installation at http://localhost/wp-admin/install.php. On this page, you configure the title for
your site and an administrative user to moderate your blog.
To complete the installation
1.
2.
3.
On the WordPress Welcome page, enter the following information and click Install WordPress.
Field
Value
Site Title
Enter a name for your WordPress site.
Username
Enter a name for your WordPress administrator.
For security purposes you should choose a
unique name for this user, since this will be more
difficult to exploit than the default user name,
admin.
Password
Enter a strong password, and then enter it again
to confirm. Do not reuse an existing password,
and make sure to store this password in a safe
place.
Your E-mail
Enter the email address you want to use for
notifications.
Privacy
Check to allow search engines to index your site.
Click Log In.
On the Log In page, enter your user name for Username and the site password you entered previously
for Password.
Making Your WordPress Site Public
Now that you can see your WordPress blog on your local host, you can publish this website as the default
site on your instance so that other people can see it. The next procedure walks you through the process
of modifying your WordPress settings to point to the public DNS name of your instance instead of your
local host.
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Making Your WordPress Site Public
To configure the default settings for your WordPress site
1.
2.
Open the WordPress dashboard by opening a browser on your instance and going to http://localhost/wp-admin. If prompted for your credentials, enter your user name for the Username and
your site password for Password.
In the Dashboard pane, click Settings.
3.
On the General Settings page, enter the following information and click Save Changes.
• WordPress address (URL)—The public DNS address of your instance. For example, your URL
may look something like http://ec2-203-0-113-25.compute-1.amazonaws.com.
You can get the public DNS for your instance using the Amazon EC2 console (select the instance
and check the Public DNS column; if this column is hidden, click the Show/Hide icon and select
Public DNS).
• Site address (URL)—The same public DNS address of your instance that you set in WordPress
address (URL).
4.
To see your new site, open a browser on a computer other than the instance hosting WordPress and
type the public DNS address of your instance in the web address field.Your WordPress site appears.
Congratulations! You have just deployed a WordPress site on a Windows instance. If you no longer need
this instance, you can remove it to avoid incurring charges. See Clean Up (p. 26) for instructions.
If your WordPress blog becomes popular and you need more compute power, you might consider migrating
to a larger instance type; for more information, see Resizing Your Instance (p. 97). If your blog requires
more storage space than you originally accounted for, you could expand the storage space on your instance
(see Expanding the Storage Space of a Volume (p. 380)). If your MySQL database needs to grow, you
could consider moving it to Amazon RDS to take advantage of the service's autoscaling abilities.
For information about WordPress, see the WordPress Codex help documentation at http://codex.wordpress.org/. For more information about troubleshooting your installation, see http://codex.wordpress.org/
Installing_WordPress#Common_Installation_Problems. For information about making your WordPress
blog more secure, see http://codex.wordpress.org/Hardening_WordPress. For information about keeping
your WordPress blog up-to-date, see http://codex.wordpress.org/Updating_WordPress.
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Prerequisites
Tutorial: Setting Up a Windows
HPC Cluster on Amazon EC2
You can launch a scalable Microsoft Windows High Performance Computing (HPC) cluster using EC2
instances. A Windows HPC cluster requires an Active Directory domain controller, a DNS server, a head
node, and one or more compute nodes.
To set up a Windows HPC cluster on Amazon EC2, complete the following tasks:
• Task 1: Set Up Your Active Directory Domain Controller (p. 35)
• Task 2: Configure Your Head Node (p. 37)
• Task 3: Set Up the Compute Node (p. 39)
• Task 4: Scale Your HPC Compute Nodes (Optional) (p. 41)
For more information about high performance computing, see High Performance Computing (HPC) on
AWS.
Prerequisites
Install the Amazon EC2 command line interface tools and set the region you'll be using as the default
region. For more information, see Setting Up the Amazon EC2 Command Line Interface Tools on Windows
in the Amazon EC2 Command Line Reference.
Task 1: Set Up Your Active Directory Domain
Controller
The Active Directory domain controller provides authentication and centralized resource management of
the HPC environment and is required for the installation. To set up your Active Directory, complete these
steps:
1.
Create the security groups required for Active Directory.
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Creating Security Groups for Active Directory
2.
Create the instance that serves as the domain controller for your HPC cluster.
3.
Configure the domain controller for your HPC cluster.
Creating Security Groups for Active Directory
Run the script Create-AD-sec-groups.bat to create a security group with rules for the domain controller and domain members.
To create the required security groups for Active Directory
1.
Copy the contents of Create_AD_security.bat (p. 42) to a text editor. Save the file, using the file
name Create-AD-sec-groups.bat, to a computer configured with the Amazon EC2 command
line interface tools.
2.
Run the Create-AD-sec-groups.bat batch file from the Command Prompt window as a local
administrator.
3.
Open the Amazon EC2 console, select Security Groups from the navigation pane, and verify that
the following security groups appear in the list:
• SG - Domain Controller
• SG - Domain Member
Alternatively, manually set up the firewall to allow traffic on the required ports. For more information, see
How to configure a firewall for domains and trusts on the Microsoft website.
Creating the Domain Controller for your HPC
cluster
Launch an instance that will serve as the domain controller for your HPC cluster.
To create a domain controller for your HPC cluster
1.
2.
Open the Amazon EC2 console and select a region for the instance.
Launch an instance with the name Domain Controller and the security group SG - Domain
Controller.
a.
b.
On the console dashboard, click Launch Instance.
On the Choose an AMI page, select an AMI for Windows Server and then click Select.
c.
On the next pages of the wizard, select an instance type, instance configuration, and storage
options.
On the Tag Instance page, enter Domain Controller as the value for the Name tag and then
click Next: Configure Security Group.
d.
3.
e.
On the Configure Security Group page, click Select an existing security group, select SG
- Domain Controller from the list of security groups, and then click Review and Launch.
f.
Click Launch.
Create an Elastic IP address and associate it with the instance.
a.
In the navigation pane, click Elastic IPs.
b.
Click Allocate New Address.
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Configuring the Domain Controller for Your HPC Cluster
c.
d.
When prompted, click Yes, Allocate, and then close the confirmation dialog box.
Select the Elastic IP address you created, and then click Associate Address.
e.
In the Instance list, select the Domain Controller instance and then click Associate.
Configuring the Domain Controller for Your HPC
Cluster
Log in to the instance you created and configure the server as a domain controller for the HPC cluster.
To configure your instance as a domain controller
1.
Connect to your Domain Controller instance.
2.
3.
4.
5.
Open Server Manager, and add the Active Directory Domain Services role.
Promote the server to a domain controller using Server Manager or by running DCPromo.exe.
Create a new domain in a new forest.
Enter hpc.local as the fully qualified domain name (FQDN).
6.
7.
8.
Select Forest Functional Level as Windows Server 2008 R2.
Ensure that the DNS Server option is selected, and then click Next.
Select Yes, the computer will use an IP address automatically assigned by a DHCP server (not
recommended).
9. In the warning box, click Yes to continue.
10. Complete the wizard and then select Reboot on Completion.
11. Log in to the instance as hpc.local\administrator.
12. Create a domain user hpc.local\hpcuser.
Task 2: Configure Your Head Node
An HPC client connects to the head node. The head node facilitates the scheduled jobs. You configure
your head node by completing the following steps:
1. Create security groups for your HPC cluster.
2. Launch an instance for your head node.
3. Install the HPC Pack.
4. Configure your HPC cluster.
Creating Security Groups for Your HPC Cluster
Run the script Create-HPC-sec-group.bat to create a security group named SG - Windows HPC
Cluster with rules for the HPC cluster nodes.
To create the security group for your HPC cluster
1.
Copy the contents of Create-HPC-sec-group.bat (p. 43) to a text editor. Save the file, using the file
name Create-HPC-sec-group.bat, to a computer configured with the EC2 command line tools.
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Launch an Instance for the HPC Head Node
2.
Run the Create-HPC-sec-group.bat batch file from a Command Prompt window as a local administrator.
3.
Open the Amazon EC2 console, select Security Groups from the navigation pane, and verify that
the SG - Windows HPC Cluster security group appears in the list.
Alternatively, manually configure the firewall with the port requirements for HPC cluster members to
communicate. For more information, see Windows Firewall configuration on the Microsoft website.
Launch an Instance for the HPC Head Node
Launch an instance and then configure it as a member of the hpc.local domain and with the necessary
user accounts.
To configure an instance as your head node
1.
Launch an instance and name it HPC-Head. When you launch the instance, select both of these
security groups:
• SG - Windows HPC Cluster
• SG - Domain Member
2.
Log in to the instance and get the existing DNS server address from HPC-Head using the following
command:
C:\> IPConfig /all
3.
4.
5.
6.
Update the TCP/IPv4 properties of the HPC-Head NIC to include the Elastic IP address for the Domain
Controller instance as the primary DNS, and then add the additional DNS IP address from the
previous step.
Join the machine to the hpc.local domain using the credentials for hpc.local\administrator
(the domain administrator account).
Add hpc.local\hpcuser as the local administrator. When prompted for credentials, use
hpc.local\administrator, and then restart the instance.
Log back in to HPC-Head as hpc.local\hpcuser.
Install the HPC Pack
To install the HPC Pack
1.
Connect to your HPC-Head instance using the hpc.local\hpcuser account.
2.
Using Server Manager, turn off Internet Explorer Enhanced Security Configuration (IE ESC) for
Administrators.
a.
b.
3.
In Server Manager, under Security Information, click Configure IE ESC.
Turn off IE ESC for administrators.
Install the HPC Pack on HPC-Head.
a.
Download the HPC Pack to HPC-Head from the Microsoft Download Center. Choose the HPC
Pack for the version of Windows Server on HPC-Head.
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b.
c.
d.
Extract the files to a folder, open the folder, and double-click setup.exe.
On the Installation page, select Create a new HPC cluster by creating a head node, and then
click Next.
Accept the default settings to install all the databases on the Head Node, and then click Next.
e.
Complete the wizard.
Configure Your HPC Cluster on the Head Node
To configure your HPC cluster on the head node
1.
2.
Start HPC Cluster Manager.
In the Deployment To-Do List, select Configure your network.
a.
b.
c.
In the wizard, select the default option (5), and then click Next.
Complete the wizard accepting default values on all screens, and choose how you want to update
the server and participate in customer feedback.
Click Configure.
3.
Select Provide Network Credentials, then supply the hpc.local\hpcuser credentials.
4.
5.
Select Configure the naming of new nodes, and then click OK.
Select Create a node template.
a.
b.
c.
Select the Compute node template, and then click Next.
Select Without operating system, and then continue with the defaults.
Click Create.
Task 3: Set Up the Compute Node
Setting up the compute node involves the following steps:
1. Launch an instance for your compute node.
2. Install the HPC Pack on the instance.
3. Add the compute node to your cluster.
Launch an Instance for the HPC Compute Node
Configure your compute node by launching an instance, and then configuring the instance as a member
of the hpc.local domain with the necessary user accounts.
To configure an instance for your compute node
1.
2.
Launch an instance and name it HPC-Compute. When you launch the instance, select the following
security groups: SG - Windows HPC Cluster and SG - Domain Member.
Log in to the instance and get the existing DNS server address from HPC-Compute using the following
command:
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Install the HPC Pack on the Compute Node
C:\> IPConfig /all
3.
4.
Update the TCP/IPv4 properties of the HPC-Compute NIC to include the Elastic IP address of the
Domain Controller instance as the primary DNS. Then add the additional DNS IP address from
the previous step.
Join the machine to the hpc.local domain using the credentials for hpc.local\administrator
(the domain administrator account).
5.
Add hpc.local\hpcuser as the local administrator. When prompted for credentials, use
hpc.local\administrator, and then restart.
6.
Log back in to HPC-Compute as hpc.local\hpcuser.
Install the HPC Pack on the Compute Node
To install the HPC Pack on the compute node
1.
Connect to your HPC-Compute instance using the hpc.local\hpcuser account.
2.
Using Server Manager, turn off Internet Explorer Enhanced Security Configuration (IE ESC) for
Administrators.
a.
b.
3.
In Server Manager, under Security Information, click Configure IE ESC.
Turn off IE ESC for administrators.
Install the HPC Pack on HPC-Compute.
a.
Download the HPC Pack to HPC-Compute from the Microsoft Download Center. Choose the
HPC Pack for the version of Windows Server on HPC-Compute.
b.
c.
d.
Extract the files to a folder, open the folder, and double-click setup.exe.
On the Installation page, select Join an existing HPC cluster by creating a new compute
node, and then click Next.
Specify the fully-qualified name of the HPC-Head instance, and then choose the defaults.
e.
Complete the wizard.
Add the Compute Node to Your HPC Cluster
To complete your cluster configuration, from the head node, add the compute node to your cluster.
To add the compute node to your cluster
1.
Connect to the HPC-Head instance as hpc.local\hpcuser.
2.
Open HPC Cluster Manager.
3.
4.
Select Node Management.
If the compute node displays in the Unapproved bucket, right-click the node that is listed and select
Add Node.
a.
b.
Select Add compute nodes or broker nodes that have already been configured.
Select the check box next to the node and click Add.
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Task 4: Scale Your HPC Compute Nodes (Optional)
5.
Right-click the node and click Bring Online.
Task 4: Scale Your HPC Compute Nodes (Optional)
To scale your compute nodes
1.
Connect to the HPC-Compute instance as hpc.local\hpcuser.
2.
Delete any files you downloaded locally from the HP Pack installation package. (You have already
run setup and created these files on your image so they do not need to be cloned for an AMI.)
From C:\Program Files\Amazon\Ec2ConfigService open the file sysprep2008.xml.
3.
4.
At the bottom of <settings pass="specialize">, add the following section. Make sure to replace
hpc.local, password, and hpcuser to match your environment.
<component name="Microsoft-Windows-UnattendedJoin" processorArchitec
ture="amd64" publicKeyToken="31bf3856ad364e35"
language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.mi
crosoft.com/WMIConfig/2002/State"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Identification>
<UnsecureJoin>false</UnsecureJoin>
<Credentials>
<Domain>hpc.local</Domain>
<Password>password</Password>
<Username>hpcuser</Username>
</Credentials>
<JoinDomain>hpc.local</JoinDomain>
</Identification>
</component>
5.
Save sysprep2008.xml.
6.
Click Start, point to All Programs, and then click EC2ConfigService Settings.
7.
a.
Click the General tab, and clear the Set Computer Name check box.
b.
Click the Bundle tab, and then click Run Sysprep and Shutdown Now.
Open the Amazon EC2 console.
8. In the navigation pane, click Instances.
9. Wait for the instance status to show stopped.
10. Right-click the instance, and select Create Image.
11. Specify an image name and image description, and then click Create Image to create an AMI from
the instance.
12. Start the original HPC-Compute instance that was shut down.
13. Connect to the head node using the hpc.local\hpcuser account.
14. From HPC Cluster Manager, delete the old node that now appears in an error state.
15. In the Amazon EC2 console, in the navigation pane, click AMIs.
16. Use the AMI you created to add additional nodes to the cluster.
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Running the Lizard Performance Measurement Application
You can launch additional compute nodes from the AMI that you created. These nodes are automatically
joined to the domain, but you must add them to the cluster as already configured nodes in HPC Cluster
Manager using the head node and then bring them online.
Running the Lizard Performance Measurement
Application
If you choose, you can run the Lizard application, which measures the computational performance and
efficiency that can be achieved by your HPC cluster. Go to http://www.microsoft.com/download/en/details.aspx?id=8433, download the lizard_x64.msi installer, and run the installer directly on your head node
as hpc.local\hpcuser.
Create_AD_security.bat
The following batch file creates two security groups for your Active Directory environment: one group for
Active Directory domain controllers and one for Active Directory domain member servers.
set DC="SG - Domain Controller"
set DM="SG - Domain Member"
set CIDR="your-address-range"
:: ==============================================================================
:: Creates Security groups Prior to Adding Rules
:: ==============================================================================
call ec2addgrp %DM% -d "Active Directory Domain Member"
call ec2addgrp %DC% -d "Active Directory Domain Controller"
:: ==============================================================================
:: Security group for Domain Controller
:: ==============================================================================
:: For LDAP and related services. Details at link below
:: http://support.microsoft.com/kb/179442
call ec2auth %DC% -o %DM% -P UDP -p 123
call ec2auth %DC% -o %DM% -P TCP -p 135
call ec2auth %DC% -o %DM% -P UDP -p 138
call ec2auth %DC% -o %DM% -P TCP -p "49152-65535"
call ec2auth %DC% -o %DM% -P TCP -p 389
call ec2auth %DC% -o %DM% -P UDP -p 389
call ec2auth %DC% -o %DM% -P TCP -p 636
call ec2auth %DC% -o %DM% -P TCP -p 3268
call ec2auth %DC% -o %DM% -P TCP -p 3269
call ec2auth %DC% -o %DM% -P TCP -p 53
call ec2auth %DC% -o %DM% -P UDP -p 53
call ec2auth %DC% -o %DM% -P TCP -p 88
call ec2auth %DC% -o %DM% -P UDP -p 88
call ec2auth %DC% -o %DM% -P TCP -p 445
call ec2auth %DC% -o %DM% -P UDP -p 445
:: For ICMP as required by Active Directory
call ec2auth %DC% -P ICMP -t -1:-1
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Create-HPC-sec-group.bat
:: For Elastic IP to communicate with DNS
call ec2auth %DC% -s %CIDR% -P UDP -p 53
:: For RDP for connecting to desktop remotely
call ec2auth %DC% -s %CIDR% -P TCP -p 3389
:: ==============================================================================
:: Security group for Domain Member
:: ==============================================================================
:: For LDAP and related services. Details at link below
:: http://support.microsoft.com/kb/179442
call
call
call
call
ec2auth
ec2auth
ec2auth
ec2auth
%DM%
%DM%
%DM%
%DM%
-o
-o
-o
-o
%DC%
%DC%
%DC%
%DC%
-P
-P
-P
-P
TCP
UDP
TCP
UDP
-p
-p
-p
-p
"49152-65535"
"49152-65535"
53
53
Create-HPC-sec-group.bat
The following batch file creates a security group for your HPC cluster nodes.
set HPC="SG - Windows HPC Cluster"
set CIDR="your-address-range"
:: ==============================================================================
:: Creates Security groups Prior to Adding Rules
:: ==============================================================================
call ec2addgrp %HPC% -d "Windows HPC Server 2008 R2 Cluster Nodes"
:: ==============================================================================
:: Security group for Windows HPC Cluster
:: ==============================================================================
:: For HPC related services. Details at link below
:: http://technet.microsoft.com/en-us/library/ff919486.aspx#BKMK_Firewall
call ec2auth %HPC% -o %HPC% -P TCP -p 80
call ec2auth %HPC% -o %HPC% -P TCP -p 443
call ec2auth %HPC% -o %HPC% -P TCP -p 1856
call ec2auth %HPC% -o %HPC% -P TCP -p 5800
call ec2auth %HPC% -o %HPC% -P TCP -p 5801
call ec2auth %HPC% -o %HPC% -P TCP -p 5969
call ec2auth %HPC% -o %HPC% -P TCP -p 5970
call ec2auth %HPC% -o %HPC% -P TCP -p 5974
call ec2auth %HPC% -o %HPC% -P TCP -p 5999
call ec2auth %HPC% -o %HPC% -P TCP -p 6729
call ec2auth %HPC% -o %HPC% -P TCP -p 6730
call ec2auth %HPC% -o %HPC% -P TCP -p 7997
call ec2auth %HPC% -o %HPC% -P TCP -p 8677
call ec2auth %HPC% -o %HPC% -P TCP -p 9087
call ec2auth %HPC% -o %HPC% -P TCP -p 9090
call ec2auth %HPC% -o %HPC% -P TCP -p 9091
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Create-HPC-sec-group.bat
call
call
call
call
call
call
call
ec2auth
ec2auth
ec2auth
ec2auth
ec2auth
ec2auth
ec2auth
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
-o
-o
-o
-o
-o
-o
-o
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
%HPC%
-P
-P
-P
-P
-P
-P
-P
TCP
TCP
TCP
TCP
TCP
TCP
UDP
-p
-p
-p
-p
-p
-p
-p
9092
"9100-9163"
"9200-9263"
9794
9892
9893
9893
:: For HPC related services, these are NOT in the first table but are there in
the third table at link below
:: http://technet.microsoft.com/en-us/library/ff919486.aspx#BKMK_Firewall
call ec2auth %HPC% -o %HPC% -P TCP -p 6498
call ec2auth %HPC% -o %HPC% -P TCP -p 7998
call ec2auth %HPC% -o %HPC% -P TCP -p 8050
call ec2auth %HPC% -o %HPC% -P TCP -p 5051
:: For RDP for connecting to desktop remotely
call ec2auth %HPC% -s %CIDR% -P TCP -p 3389
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Using an AMI
Amazon Machine Images (AMI)
An Amazon Machine Image (AMI) provides the information required to launch an instance, which is a
virtual server in the cloud.You specify an AMI when you launch an instance, and you can launch as many
instances from the AMI as you need.
An AMI includes the following:
• A template for the root volume for the instance (for example, an operating system, an application
server, and applications)
• Launch permissions that control which AWS accounts can use the AMI to launch instances
• A block device mapping that specifies the volumes to attach to the instance when it's launched
Using an AMI
The following diagram summarizes the AMI lifecycle. After you create and register an AMI, you can use
it to launch new instances. (You can also launch instances from an AMI if the AMI owner grants you
launch permissions.) You can copy an AMI to the same region or to different regions. When you are finished
launching instance from an AMI, you can deregister the AMI.
You can search for an AMI that meets the criteria for your instance. You can search for AMIs provided
by AWS or AMIs provided by the community. For more information, see AMI Types (p. 48) and Finding
an AMI (p. 51).
When you are connected to an instance, you can use it just like you use any other server. For information
about launching, connecting, and using your instance, see Amazon EC2 Instances (p. 75).
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Creating Your Own AMI
Creating Your Own AMI
You can customize the instance that you launch from a public AMI and then save that configuration as a
custom AMI for your own use. Instances that you launch from your AMI use all the customizations that
you've made.
The root storage device of the instance determines the process you follow to create an AMI. The root
volume of an instance is either an Amazon EBS volume or an instance store volume. For information,
see Root Device Volume (p. 8).
To create an Amazon EBS-backed AMI, see Creating an Amazon EBS-Backed Windows AMI (p. 62).
To create an instance store-backed AMI, see Creating an Instance Store-Backed Windows AMI (p. 64).
To help categorize and manage your AMIs, you can assign custom tags to them. For more information,
see Tagging Your Amazon EC2 Resources (p. 433).
Buying, Sharing, and Selling AMIs
After you create an AMI, you can keep it private so that only you can use it, or you can share it with a
specified list of AWS accounts. You can also make your custom AMI public so that the community can
use it. Building a safe, secure, usable AMI for public consumption is a fairly straightforward process, if
you follow a few simple guidelines. For information about how to create and use shared AMIs, see Shared
AMIs (p. 53).
You can purchase an AMIs from a third party, including AMIs that come with service contracts from organizations such as Red Hat. You can also create an AMI and sell it to other Amazon EC2 users. For
more information about buying or selling AMIs, see Paid AMIs (p. 59).
Deregistering Your AMI
You can deregister an AMI when you have finished with it. After you deregister an AMI, you can't use it
to launch new instances. For more information, see Deregistering Your AMI (p. 72).
AWS Windows AMIs
AWS provides a set of publicly available AMIs that contain software configurations specific to the Windows
platform. Using these AMIs, you can quickly start building and deploying your applications using Amazon
EC2. First choose the AMI that meets your specific requirements, and then launch an instance using that
AMI.You retrieve the password for the administrator account and then log in to the instance using Remote
Desktop Connection, just as you would with any other Windows server. The name of the administrator
account depends on the language of the operating system. For example, for English, it's Administrator,
for French it's Administrateur, and for Portuguese it's Administrador. For more information, see Localized
Names for Administrator Account in Windows in the Microsoft TechNet Wiki.
AWS currently provides AMIs based on the following versions of Windows:
• Microsoft Windows Server 2012 R2 (64-bit)
• Microsoft Windows Server 2012 (64-bit)
• Microsoft Windows Server 2008 R2 (64-bit)
• Microsoft Windows Server 2008 (64-bit)
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Update Schedule
• Microsoft Windows Server 2008 (32-bit)
• Microsoft Windows Server 2003 R2 (64-bit)
• Microsoft Windows Server 2003 R2 (32-bit)
AWS also provides a set of publicly available AMIs that include SQL Server, SQL Server Express, Internet
Information Services (IIS), and ASP.NET to help you get started quickly. You can use one or more of
these AMIs to deploy your applications. For example, you can use an AWS Windows AMI with SQL
Server Express, IIS, and ASP.NET to launch an instance that runs web and ASP.NET applications.
Launching an instance from an AWS Windows AMI with SQL Server offers you the flexibility to run the
instance as a database server. Or you can launch an instance from one of the basic Windows AMIs,
customize the instance by installing the software and applications of your choice, and then register the
customized instance as an AMI. You can then use this customized AMI to launch additional instances
that include your chosen software and applications.
To locate the Windows AMIs provided by AWS using the Amazon EC2 console, see Windows AMIs.
In addition to the public AMIs provided by AWS, AMIs published by the AWS developer community are
available for your use. We highly recommend that you use only those Windows AMIs that AWS or other
reputable sources provide. To learn how to find a list of Microsoft Windows AMIs approved by Amazon,
see Finding an AMI (p. 51).
You can also create an AMI from your own Windows computer. For more information, see Importing and
Exporting Instances (p. 108).
Update Schedule
AWS provides updated, full patched Windows AMIs within five business days of Microsoft's patch Tuesday
(the second Tuesday of each month). The new Windows AMIs have new AMI IDs. To find the latest
Windows AMIs, use the AMI name instead of the AMI ID. The basic structure of the AMI name is usually
the same, with a new date added to the end. You can use a query or script to search for an AMI by name,
confirm that you've found the correct AMI, and then launch your instance. AWS removes the previously
published Windows AMIs within 10 business days after publishing updated Windows AMIs.
Configuration Settings
The AWS Windows AMIs are, as much as possible, configured the same way as the Windows Server
you install from Microsoft-issued media. There are however, a few differences in the installation defaults.
An Amazon EC2 Windows AMI comes with an additional service installed, the EC2Config service. The
EC2Config service runs in the local system account and is primarily used during the initial setup. For information about the tasks that EC2Config performs, see Overview of EC2Config Tasks (p. 154).
After you launch your Windows instance with its initial configuration, you can use the EC2Config service
to change the configuration settings as part of the process of customizing and creating your own AMIs.
Instances launched from your customized AMI are launched with the new configuration.
Xen Drivers
AWS Windows AMIs contain a set of drivers to permit access to Xen virtualized hardware. These drivers
are used by Amazon EC2 to map instance store and Amazon EBS volumes to their devices.
For more information, see Xen Drivers (p. 169).
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Keeping Your Instances Up-to-Date
Keeping Your Instances Up-to-Date
At their initial launch, your Windows instances contain all the latest security updates. However, after you
launch an instance, you are responsible for managing future updates, including the updates issued after
you built the AMI. You can use the Windows Update service, or the Automatic Updates tool available on
your instance to deploy the Microsoft updates. Any third-party software you deploy must also be kept upto-date using whatever mechanisms are appropriate for that software. We recommend that you run the
Windows Update service as a first step after every Windows instance that you launch.
You can reboot a Windows instance after installing updates. For more information, see Reboot Your Instance (p. 144).
Upgrading from Windows Server 2008 to Windows
Server 2012
At some point, you might find that you are interested in upgrading the operating system on your instance
from Windows Server 2008 to Windows Server 2012. To upgrade from Windows Server 2008 to Windows
Server 2012, complete the following process.
Warning
Do not directly upgrade the operating system on your instance. This is not supported and doing
so can impair your instance.
To upgrade from Windows Server 2008 to Windows Server 2012
1.
2.
3.
4.
5.
6.
7.
On the original instance, back up any data that must persist.
Launch a new instance using an AMI based on Windows Server 2012.
Install the software to run on your new instance.
Restore the data that you backed up to volumes on your new instance.
(Optional) If the original instance had an Elastic IP address, associate it with the new instance.
(Optional) Update any affected DNS records to point to your new instance.
Verify that the software on your new instance is operating as expected, and then terminate the original instance.
AMI Types
You can select an AMI to use based on the following characteristics:
• Region (see Regions and Availability Zones (p. 6))
• Operating system
• Architecture (32-bit or 64-bit)
• Launch Permissions (p. 48)
• Storage for the Root Device (p. 49)
Launch Permissions
The owner of an AMI determines its availability by specifying launch permissions. Launch permissions
fall into the following categories.
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Storage for the Root Device
Launch
Permission
Description
public
The owner grants launch permissions to all AWS accounts.
explicit
The owner grants launch permissions to specific AWS accounts.
implicit
The owner has implicit launch permissions for an AMI.
Amazon and the Amazon EC2 community provide a large selection of public AMIs. For more information,
see Shared AMIs (p. 53). Developers can charge for their AMIs. For more information, see Paid
AMIs (p. 59).
Storage for the Root Device
All AMIs are categorized as either backed by Amazon EBS or backed by instance store. The former
means that the root device for an instance launched from the AMI is an Amazon EBS volume created
from an Amazon EBS snapshot. The latter means that the root device for an instance launched from the
AMI is an instance store volume created from a template stored in Amazon S3. For more information,
see Root Device Volume (p. 8).
This section summarizes the important differences between the two types of AMIs. The following table
provides a quick summary of these differences.
Characteristic
Amazon EBS-Backed
Amazon Instance Store-Backed
Boot time
Usually less than 1 minute
Usually less than 5 minutes
Size limit
1 TiB
10 GiB
Root device volume
Amazon EBS volume
Instance store volume
Data persistence
Data on Amazon EBS volumes
persists after instance termination*;
you can also attach instance store
volumes that don't persist after
instance termination.
Data on instance store volumes
persists only during the life of the
instance; you can also attach Amazon
EBS volumes that persist after
instance termination.
Upgrading
The instance type, kernel, RAM disk, Instance attributes are fixed for the life
and user data can be changed while of an instance.
the instance is stopped.
Charges
You're charged for instance usage,
You're charged for instance usage and
Amazon EBS volume usage, and
storing your AMI in Amazon S3.
storing your AMI as an Amazon EBS
snapshot.
AMI creation/bundling
Uses a single command/call
Stopped state
Can be placed in stopped state where Cannot be in stopped state; instances
instance is not running, but the root are running or terminated
volume is persisted in Amazon EBS
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* By default, Amazon EBS-backed instance root volumes have the DeleteOnTermination flag set to
true, which causes the volume to be deleted upon instance termination. For information about how to
change this so that the volume persists following termination, see Root Device Volume (p. 8).
Determining the Root Device Type of Your AMI
To determine the root device type of an AMI using the console
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click AMIs, and select the AMI.
Check the value of Root Device Type in the Details tab as follows:
• If the value is ebs, this is an Amazon EBS-backed AMI.
• If the value is instance store, this is an instance store-backed AMI.
To determine the root device type of an AMI using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-images (AWS CLI)
• ec2-describe-images (Amazon EC2 CLI)
• Get-EC2Image (AWS Tools for Windows PowerShell)
Size Limit
Amazon EC2 instance store-backed AMIs are limited to 10 GiB storage for the root device, whereas
Amazon EBS-backed AMIs are limited to 1 TiB. Many Windows AMIs come close to the 10 GiB limit, so
you'll find that Windows AMIs are often backed by an Amazon EBS volume.
Note
All Windows Server 2008, Windows Server 2008 R2, and Windows Server 2012 AMIs are backed
by an Amazon EBS volume by default because of their larger size.
Stopped State
You can stop an Amazon EBS-backed instance, but not an Amazon EC2 instance store-backed instance.
Stopping causes the instance to stop running (its status goes from running to stopping to stopped).
A stopped instance persists in Amazon EBS, which allows it to be restarted. Stopping is different from
terminating; you can't restart a terminated instance. Because Amazon EC2 instance store-backed AMIs
can't be stopped, they're either running or terminated. For more information about what happens and
what you can do while an instance is stopped, see Stop and Start Your Instance (p. 141).
Default Data Storage and Persistence
Instances that use an instance store volume for the root device automatically have instance store available
(the root volume contains the root partition and you can store additional data). Any data on an instance
store volume is deleted when the instance fails or terminates (except for data on the root device). You
can add persistent storage to your instance by attaching one or more Amazon EBS volumes.
Instances that use Amazon EBS for the root device automatically have an Amazon EBS volume attached.
The volume appears in your list of volumes like any other. The instances don't use any available instance
store volumes by default.You can add instance storage or additional Amazon EBS volumes using a block
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device mapping. For more information, see Block Device Mapping (p. 415). For information about what
happens to the instance store volumes when you stop an instance, see Stop and Start Your Instance (p. 141).
Boot Times
Amazon EBS-backed AMIs launch faster than Amazon EC2 instance store-backed AMIs. When you
launch an Amazon EC2 instance store-backed AMI, all the parts have to be retrieved from Amazon S3
before the instance is available. With an Amazon EBS-backed AMI, only the parts required to boot the
instance need to be retrieved from the snapshot before the instance is available. However, the performance
of an instance that uses an Amazon EBS volume for its root device is slower for a short time while the
remaining parts are retrieved from the snapshot and loaded into the volume. When you stop and restart
the instance, it launches quickly, because the state is stored in an Amazon EBS volume.
AMI Creation
To create Windows AMIs backed by instance store, there's an API action that creates an AMI and another
API action that registers the AMI.
AMI creation is much easier for AMIs backed by Amazon EBS. The CreateImage API action creates
your Amazon EBS-backed AMI and registers it. There's also a button in the AWS Management Console
that lets you create an AMI from a running instance. For more information, see Creating an Amazon EBSBacked Windows AMI (p. 62).
How You're Charged
With AMIs backed by instance store, you're charged for AMI storage and instance usage. With AMIs
backed by Amazon EBS, you're charged for volume storage and usage in addition to the AMI and instance
usage charges.
With Amazon EC2 instance store-backed AMIs, each time you customize an AMI and create a new one,
all of the parts are stored in Amazon S3 for each AMI. So, the storage footprint for each customized AMI
is the full size of the AMI. For Amazon EBS-backed AMIs, each time you customize an AMI and create
a new one, only the changes are stored. So the storage footprint for subsequent AMIs you customize
after the first is much smaller, resulting in lower AMI storage charges.
When an Amazon EBS-backed instance is stopped, you're not charged for instance usage; however,
you're still charged for volume storage. We charge a full instance hour for every transition from a stopped
state to a running state, even if you transition the instance multiple times within a single hour. For example,
let's say the hourly instance charge for your instance is $0.10. If you were to run that instance for one
hour without stopping it, you would be charged $0.10. If you stopped and restarted that instance twice
during that hour, you would be charged $0.30 for that hour of usage (the initial $0.10, plus 2 x $0.10 for
each restart).
Finding an AMI
Before you can launch an instance, you must select an AMI to use. As you select an AMI, consider the
following requirements you might have for the instances that you'll launch:
• The region
• The operating system
• The architecture: 32-bit (i386) or 64-bit (x86_64)
• The root device type: Amazon EBS or instance store
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• The provider: Amazon Web Services, Oracle, IBM, Microsoft, or the community
Finding a Windows AMI Using the Amazon EC2
Console
The Amazon EC2 console provides one way to see available Windows AMIs.
To find a Windows AMI using the console
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select a region.You can select any region that's available to you, regardless
of your location. This is the region in which you'll launch your instance.
3.
4.
In the navigation pane, click AMIs.
(Optional) Use the Filter options to scope the list of displayed AMIs to the AMIs that interest you.
For example, to list all Windows AMIs provided by AWS, select Public images, Amazon images,
and then Windows from the Filter lists.
(Optional) Click the Show/Hide Columns icon to select which image attributes to display, such as
the root device type. Alternatively, you can select an AMI from the list and view its properties in the
Details tab.
Before you select an AMI, it's important that you check whether it's backed by instance store or by
Amazon EBS and that you are aware of the effects of this difference. For more information, see
Storage for the Root Device (p. 49).
To launch an instance from this AMI, select it and then click Launch. For more information about
launching an instance using the console, see Launching Your Instance from an AMI (p. 132). If you're
not ready to launch the instance now, write down the AMI ID (ami-xxxxxxxx) for later.
5.
6.
7.
Finding an AMI Using the Command Line
You can use command line parameters to list only the types of AMIs that interest you. For example, the
following commands find public AMIs owned by you or Amazon.
• describe-images (AWS CLI)
C:\> aws ec2 describe-images --owners self amazon
• ec2-describe-images (Amazon EC2 CLI)
C:\> ec2-describe-images -o self -o amazon
Add the following filters to a command to display only Windows AMIs backed by Amazon EBS:
• describe-images (AWS CLI)
--filters "Name=platform,Values=Windows,Name=root-device-type,Values=ebs"
• ec2-describe-images (Amazon EC2 CLI)
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--filter "platform=windows" --filter "root-device-type=ebs"
• Get-EC2Image (AWS Tools for Windows PowerShell)
PS C:\> $platform_values = New-Object 'collections.generic.list[string]'
PS C:\> $platform_values.add("windows")
PS C:\> $filter_platform = New-Object Amazon.EC2.Model.Filter -Property
@{Name="platform"; Values=$platform_values}
PS C:\> $device_values = New-Object 'collections.generic.list[string]'
PS C:\> $device_values.add("ebs")
PS C:\> $filter_device = New-Object Amazon.EC2.Model.Filter -Property
@{Name="root-device-type"; Values=$device_values}
PS C:\> Get-EC2Image ... -Filter $filter_platform, $filter_device
After locating an AMI that meets your needs, write down its ID (ami-xxxxxxxx). You can use this AMI to
launch an instances. For more information, see one of the following:
• Launching an Instance Using the AWS CLI in the AWS Command Line Interface User Guide
• Launching an Instance Using the Amazon EC2 CLI in the Amazon EC2 Command Line Reference
• Launching an Instance Using Windows PowerShell in the AWS Tools for Windows PowerShell User
Guide
Shared AMIs
A shared AMI is an AMI that a developer created and made available for other developers to use. One
of the easiest ways to get started with Amazon EC2 is to use a shared AMI that has the components you
need and then add custom content.
You use a shared AMI at your own risk. Amazon can't vouch for the integrity or security of AMIs shared
by other Amazon EC2 users. Therefore, you should treat shared AMIs as you would any foreign code
that you might consider deploying in your own data center and perform the appropriate due diligence.
We recommend that you get an AMI from a trusted source. If you have questions or observations about
a shared AMI, use the AWS forums.
Amazon's public images have an aliased owner, which appears as amazon in the account field. This enables you to find AMIs from Amazon easily. Other users can't alias their AMIs.
Topics
•
•
•
•
Finding Shared AMIs (p. 53)
Making an AMI Public (p. 55)
Sharing an AMI with Specific AWS Accounts (p. 57)
Using Bookmarks (p. 58)
Finding Shared AMIs
You can use the Amazon EC2 console or the command line to find shared AMIs.
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Finding a Shared AMI Using the Console
To find a shared private AMI using the console
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click AMIs.
In the first filter, select Private images. All AMIs that have been shared with you are listed.
To find a shared public AMI using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click AMIs.
3.
4.
To find shared AMIs, select Public images from the Filter list.
Use filters to list only the types of AMIs that interest you. For example, select Amazon images to
display only Amazon's public images.
Finding a Shared AMI Using the AWS CLI
To find a shared public AMI using the command line tools
Use the describe-images command to list AMIs. You can scope the list to the types of AMIs that interest
you, as shown in the following examples.
The following command lists all public AMIs using the --executable-users option. This list includes
any public AMIs that you own.
C:\> aws ec2 describe-images --executable-users all
The following command lists the AMIs for which you have explicit launch permissions. This list excludes
any such AMIs that you own.
C:\> aws ec2 describe-images -executable-users self
The following command lists the AMIs owned by Amazon. Amazon's public AMIs have an aliased owner,
which appears as amazon in the account field. This enables you to find AMIs from Amazon easily. Other
users can't alias their AMIs.
C:\> aws ec2 describe-images --owners amazon
The following command lists the AMIs owned by the specified AWS account.
C:\> aws ec2 describe-images --owners 123456789012
To reduce the number of displayed AMIs, use a filter to list only the types of AMIs that interest you. For
example, use the following filter to display only EBS-backed AMIs.
--filters "Name=root-device-type,Values=ebs"
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Finding a Shared AMI Using the Amazon EC2 CLI
To find a shared public AMI using the command line tools
Use the ec2-describe-images command to list AMIs.You can scope the list to the types of AMIs that interest
you, as shown in the following examples.
The following command lists all public AMIs using the -x all option. This list includes any public AMIs
that you own.
C:\> ec2-describe-images -x all
The following command lists the AMIs for which you have explicit launch permissions. This list excludes
any such AMIs that you own.
C:\> ec2-describe-images -x self
The following command lists the AMIs owned by Amazon. Amazon's public AMIs have an aliased owner,
which appears as amazon in the account field. This enables you to find AMIs from Amazon easily. Other
users can't alias their AMIs.
C:\> ec2-describe-images -o amazon
The following command lists the AMIs owned by the specified AWS account.
C:\> ec2-describe-images -o <target_uid>
The <target_uid> is the account ID that owns the AMIs for which you are looking.
To reduce the number of displayed AMIs, use a filter to list only the types of AMIs that interest you. For
example, use the following filter to display only EBS-backed AMIs.
--filter "root-device-type=ebs"
Making an AMI Public
Amazon EC2 enables you to share your AMIs with other AWS accounts. You can allow all AWS accounts
to launch the AMI (make the AMI public), or only allow a few specific accounts to launch the AMI. You
are not billed when your AMI is launched by other AWS accounts; only the accounts launching the AMI
are billed.
Note
If an AMI has a product code, you can't make it public.You must share the AMI with only specific
AWS accounts.
Sharing a Public AMI Using the Console
To share a public AMI using the console
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click AMIs.
Select your AMI in the list, and then select Modify Image Permissions from the Actions list.
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4.
Select the Public radio button, and then click Save.
Sharing a Public AMI Using the AWS CLI
Each AMI has a launchPermission property that controls which AWS accounts, besides the owner's,
are allowed to use that AMI to launch instances. By modifying the launchPermission property of an
AMI, you can make the AMI public (which grants launch permissions to all AWS accounts) or share it
with only the AWS accounts that you specify.
You can add or remove account IDs from the list of accounts that have launch permissions for an AMI.
To make the AMI public, specify the all group.You can specify both public and explicit launch permissions.
To make an AMI public
Use the modify-image-attribute command as follows to add the all group to the launchPermission
list for the specified AMI.
C:\> aws ec2 modify-image-attribute --image-id ami-2bb65342 --launch-permission
"{\"Add\":[{\"Group\":\"all\"}]}"
To verify the launch permissions of the AMI, use the following describe-image-attribute command.
C:\> aws ec2 describe-image-attribute --image-id ami-2bb65342 --attribute
launchPermission
(Optional) To make the AMI private again, remove the all group from its launch permissions. Note that
the owner of the AMI always has launch permissions and is therefore unaffected by this command.
C:\> aws ec2 modify-image-attribute --image-id ami-2bb65342 "{\"Re
move\":[{\"Group\":\"all\"}]}"
Sharing a Public AMI Using the Amazon EC2 CLI
Each AMI has a launchPermission property that controls which AWS accounts, besides the owner's,
are allowed to use that AMI to launch instances. By modifying the launchPermission property of an
AMI, you can make the AMI public (which grants launch permissions to all AWS accounts or share it with
only the AWS accounts that you specify.
You can add or remove account IDs from the list of accounts that have launch permissions for an AMI
To make the AMI public, specify the all group.You can specify both public and explicit launch permissions.
To make an AMI public
Use the ec2-modify-image-attribute command as follows to add the all group to the launchPermission
list for the specified AMI.
C:\> ec2-modify-image-attribute ami-2bb65342
--launch-permission -a all
To verify the launch permissions of the AMI, use the following command.
C:\> ec2-describe-image-attribute ami-2bb65342 -l
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To make the AMI private again, remove the all group from its launch permissions. Note that the owner
of the AMI always has launch permissions and is therefore unaffected by this command.
C:\> ec2-modify-image-attribute ami-2bb65342 -l -r all
Sharing an AMI with Specific AWS Accounts
You can share an AMI with specific AWS accounts without making the AMI public. All you need are the
AWS account IDs.
Sharing an AMI Using the Console
To grant explicit launch permissions using the console
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
In the navigation pane, click AMIs.
Select your AMI in the list, and then select Modify Image Permissions from the Actions list.
Specify the AWS account number of the user with whom you want to share the AMI in the AWS
Account Number field, then click Add Permission.
To share this AMI with multiple users, repeat the above step until you have added all the required
users.
To allow create volume permissions for snapshots, check Add "create volume" permissions to
the following associated snapshots when creating permissions.
Note
You do not need to share the Amazon EBS snapshots that an AMI references in order to
share the AMI. Only the AMI itself needs to be shared; the system automatically provides
the instance access to the referenced Amazon EBS snapshots for the launch.
6.
Click Save when you are done.
Sharing an AMI Using the AWS CLI
Use the modify-image-attribute command to share an AMI as shown in the following examples.
To grant explicit launch permissions
The following command grants launch permissions for the specified AMI to the specified AWS account.
C:\> aws ec2 modify-image-attribute --image-id ami-2bb65342 --launch-permission
"{\"Add\":[{\"UserId\":\"123456789012\"}]}"
To remove launch permissions for an account
The following command removes launch permissions for the specified AMI from the specified AWS account:
C:\> aws ec2 modify-image-attribute --image-id ami-2bb65342 "{\"Re
move\":[{\"UserId\":\"123456789012\"}]}"
To remove all launch permissions
The following command removes all public and explicit launch permissions from the specified AMI. Note
that the owner of the AMI always has launch permissions and is therefore unaffected by this command.
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C:\> aws ec2 reset-image-attribute --image-id ami-2bb65342 --attribute launch
Permission
Sharing an AMI Using the Amazon EC2 CLI
Use the ec2-modify-image-attribute command to share an AMI as shown in the following examples.
To grant explicit launch permissions
The following command grants launch permissions for the specified AMI to the specified AWS account.
C:\> ec2-modify-image-attribute ami-2bb65342 -l -a 111122223333
To remove launch permissions for an account
The following command removes launch permissions for the specified AMI from the specified AWS account:
C:\> ec2-modify-image-attribute ami-2bb65342 -l -r 111122223333
To remove all launch permissions
The following command removes all public and explicit launch permissions from the specified AMI. Note
that the owner of the AMI always has launch permissions and is therefore unaffected by this command.
C:\> ec2-reset-image-attribute ami-2bb65342 -l
Using Bookmarks
If you have created a public AMI, or shared an AMI with another AWS user, you can create a bookmark
that allows a user to access your AMI and launch an instance in their own account immediately. This is
an easy way to share AMI references, so users don't have to spend time finding your AMI in order to use
it.
Note that your AMI must be public, or you must have shared it with the user to whom you want to send
the bookmark.
To create a bookmark for your AMI
1.
Type a URL with the following information, where <region> is the region in which your AMI resides,
and <ami_id> is the ID of the AMI:
https://console.aws.amazon.com/ec2/v2/home?region=<region>#LaunchInstanceWiz
ard:ami=<ami_id>
For example, this URL launches an instance from the ami-2bb65342 AMI in the us-east-1 region:
https://console.aws.amazon.com/ec2/v2/home?region=us-east-1#LaunchInstanceWiz
ard:ami=ami-2bb65342
2.
3.
Distribute the link to users who want to use your AMI.
To use a bookmark, click the link or copy and paste it into your browser. The launch wizard opens,
with the AMI already selected.
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Paid AMIs
Paid AMIs
A paid AMI is an AMI that you can purchase from a developer.
Amazon EC2 integrates with AWS Marketplace, enabling developers to charge other Amazon EC2 users
for the use of their AMIs or to provide support for instances.
The AWS Marketplace is an online store where you can buy software that runs on AWS; including AMIs
that you can use to launch your EC2 instance. The AWS Marketplace AMIs are organized into categories,
such as Developer Tools, to enable you to find products to suit your requirements. For more information
about AWS Marketplace, see the AWS Marketplace site.
Launching an instance from a paid AMI is the same as launching an instance from any other AMI. No
additional parameters are required. The instance is charged according to the rates set by the owner of
the AMI, as well as the standard usage fees for the related web services; for example, the hourly rate for
running a m1.small instance type in Amazon EC2. The owner of the paid AMI can confirm whether a
specific instance was launched using that paid AMI.
Topics
• Selling Your AMI (p. 59)
• Finding a Paid AMI (p. 59)
• Purchase a Paid AMI (p. 60)
• Getting the Product Code for Your Instance (p. 61)
• Using Paid Support (p. 61)
• Bills for Paid and Supported AMIs (p. 62)
• Managing Your AWS Marketplace Subscriptions (p. 62)
Selling Your AMI
You can sell your AMI using AWS Marketplace. AWS Marketplace offers an organized shopping experience.
Additionally, AWS Marketplace also supports AWS features such as Amazon EBS-backed AMIs, Reserved
Instances, and Spot Instances.
For information about how to sell your AMI on AWS Marketplace, see Selling on AWS Marketplace.
Finding a Paid AMI
There are several ways that you can find AMIs that are available for you to purchase. For example, you
can use AWS Marketplace, the Amazon EC2 console, or the command line. Alternatively, a developer
might let you know about a paid AMI themselves.
Finding a Paid AMI Using the Console
To find a paid AMI using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click AMIs.
3.
Select Public images from the first Filter list, Marketplace images from the second Filter list, and
the operating system from the third Filter list.
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Purchase a Paid AMI
Finding a Paid AMI Using AWS Marketplace
To find a paid AMI using AWS Marketplace
1.
Open AWS Marketplace.
2.
3.
Enter the name of the operating system in the search box, and click Go.
To scope the results further, use one of the categories or filters.
4.
Each product is labeled with its product type: either AMI or Software as a Service.
Finding a Paid AMI Using the AWS CLI
You can find a paid AMI using the describe-images command as follows.
C:\> ec2-describe-images --owners aws-marketplace
This command returns numerous details that describe each AMI, including the product code for a paid
AMI. The output from describe-images includes an entry for the product code like the following:
"ProductCodes": [
{
"ProductCodeId": "product_code",
"ProductCodeType": "marketplace"
}
],
Finding a Paid AMI Using the Amazon EC2 CLI
You can find a paid AMI using the ec2-describe-images command as follows.
C:\> ec2-describe-images -o aws-marketplace
This command returns numerous details that describe each AMI, including the product code for a paid
AMI. The following example output from ec2-describe-images includes a product code.
IMAGE
ami-a5bf59cc
image_source
product_code
x86_64
machine
123456789012
available public
instance-store
Purchase a Paid AMI
You must sign up for (purchase) a paid AMI before you can launch an instance using the AMI.
Typically a seller of a paid AMI presents you with information about the AMI, including its price and a link
where you can buy it. When you click the link, you're first asked to log into AWS, and then you can purchase
the AMI.
Purchasing a Paid AMI Using the Console
You can purchase a paid AMI by using the Amazon EC2 launch wizard. For more information, see
Launching an AWS Marketplace Instance (p. 137).
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Getting the Product Code for Your Instance
Subscribing to a Product Using AWS Marketplace
To use the AWS Marketplace, you must have an AWS account.To launch instances from AWS Marketplace
products, you must be signed up to use the Amazon EC2 service, and you must be subscribed to the
product from which to launch the instance. There are two ways to subscribe to products in the AWS
Marketplace:
• AWS Marketplace website:You can launch preconfigured software quickly with the 1-Click deployment
feature.
• Amazon EC2 launch wizard: You can search for an AMI and launch an instance directly from the
wizard. For more information, see Launching an AWS Marketplace Instance (p. 137).
Purchasing a Paid AMI From a Developer
The developer of a paid AMI can enable you to purchase a paid AMI that isn't listed in AWS Marketplace.
The developer provides you with a link that enables you to purchase the product through Amazon. You
can sign in with your Amazon.com credentials and select a credit card that's stored in your Amazon.com
account to use when purchasing the AMI.
Getting the Product Code for Your Instance
You can retrieve the AWS Marketplace product code for your instance using its instance metadata. For
more information about retrieving metadata, see Instance Metadata and User Data (p. 101).
To retrieve a product code, use the following query:
C:\> GET http://169.254.169.254/latest/meta-data/product-codes
If the instance has a product code, Amazon EC2 returns it. For example:
774F4FF8
Using Paid Support
Amazon EC2 also enables developers to offer support for software (or derived AMIs). Developers can
create support products that you can sign up to use. During sign-up for the support product, the developer
gives you a product code, which you must then associate with your own AMI. This enables the developer
to confirm that your instance is eligible for support. It also ensures that when you run instances of the
product, you are charged according to the terms for the product specified by the developer.
Important
You can't use a support product with Reserved Instances.You always pay the price that's specified
by the seller of the support product.
To associate a product code with your AMI, use one of the following commands, where ami_id is the ID
of the AMI and product_code is the product code:
• modify-image-attribute (AWS CLI)
C:\> aws ec2 modify-image-attribute --image-id ami_id --product-codes
"product_code"
• ec2-modify-image-attribute (Amazon EC2 CLI)
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Bills for Paid and Supported AMIs
C:\> ec2-modify-image-attribute ami_id --product-code product_code
After you set the product code attribute, it cannot be changed or removed.
Bills for Paid and Supported AMIs
At the end of each month, you receive an email with the amount your credit card has been charged for
using any paid or supported AMIs during the month. This bill is separate from your regular Amazon EC2
bill. For more information, see Paying For AWS Marketplace Products.
Managing Your AWS Marketplace Subscriptions
On the AWS Marketplace website, you can check your subscription details, view the vendor's usage instructions, manage your subscriptions, and more.
To check your subscription details
1.
2.
3.
4.
Log in to the AWS Marketplace.
Click Your Account.
Click Manage Your Software Subscriptions.
All your current subscriptions are listed. Click Usage Instructions to view specific instructions for
using the product, for example, a user name for connecting to your running instance.
To cancel an AWS Marketplace subscription
1.
Ensure that you have terminated any instances running from the subscription.
a.
b.
c.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
Select the instance, and select Terminate from the Actions menu. When prompted, click Yes,
Terminate.
Log in to the AWS Marketplace, and click Your Account, then Manage Your Software Subscriptions.
Click Cancel subscription. You are prompted to confirm your cancellation.
Note
After you've canceled your subscription, you are no longer able to launch any instances
from that AMI. To use that AMI again, you need to resubscribe to it, either on the AWS
Marketplace website, or through the launch wizard in the Amazon EC2 console.
Creating an Amazon EBS-Backed Windows AMI
To create an Amazon EBS-backed Windows AMI, you launch and customize a Windows instance, then
you create the AMI.
If you need to create an Amazon EBS-backed Linux AMI, see Creating an Amazon EBS-Backed Linux
AMI in the Amazon EC2 User Guide for Linux Instances.
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Creating an AMI from an Instance
The AMI creation process is different for instance store-backed AMIs. For more information about the
differences between Amazon EBS-backed and instance store-backed instances, and how to determine
the root device type for your instance, see Root Device Volume (p. 8). If you need to create an instance
store-backed Windows AMI, see Creating an Instance Store-Backed Windows AMI (p. 64).
Creating an AMI from an Instance
To create an Amazon EBS-backed AMI from an instance using the console
1.
If you don't have a running instance that uses an Amazon EBS volume for the root device, you must
launch one.
a.
b.
c.
2.
Open the Amazon EC2 console.
In the navigation pane, click AMIs. Select an Amazon EBS-backed AMI that is similar to the AMI
that you want to create. To view the Amazon EBS-backed Windows AMIs, select the following
options from the Filter lists: Public images, EBS images, and then Windows.
You can select any public AMI that uses the version of Windows Server that you want for your
AMI. However, you must select an Amazon EBS-backed AMI; don't start with an instance storebacked AMI.
Click Launch to launch an instance of the Amazon EBS-backed AMI that you've selected. Accept
the default values as you step through the wizard.
While the instance is running, connect to it and customize it. For example, you can perform any of
the following actions on your instance:
• Install software and applications.
• Copy data.
• Reduce start time by deleting temporary files, defragmenting your hard drive, and zeroing out free
space.
• Create a new user account and add it to the Administrators group.
Tip
If you are sharing your AMI, these credentials can be supplied for RDP access without
disclosing your default Administrator password.
• Configure settings using EC2Config. If you want your AMI to generate a random password at
launch time, you need to enable the Ec2SetPassword plugin; otherwise, the current Administrator password is used. For more information, see Configuring a Windows Instance Using the
EC2Config Service (p. 153).
3.
4.
5.
If the instance uses RedHat drivers to access Xen virtualized hardware, upgrade to Citrix drivers
before you create an AMI. For more information, see Upgrading PV Drivers on Your Windows
AMI (p. 169).
(Optional) When the instance is set up the way you want it, it is best to stop the instance before you
create the AMI, to ensure data integrity. You can use EC2Config to stop the instance, or select the
instance in the Amazon EC2 console, click Actions, and then click Stop Instance.
On the Instances page of the Amazon EC2 console, select your instance. Click Actions and then
click Create Image.
Tip
If this option is disabled, your instance isn't an Amazon EBS-backed instance.
6.
In the Create Image dialog box, specify a unique name and an optional description for the AMI (up
to 255 characters).
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7.
8.
To add an Amazon EBS volume, click Add New Volume, and select EBS from the Type list. Fill in
the other information as required.
When you launch an instance from your new AMI, these additional volumes are automatically attached
to the instance. Empty volumes must be formatted and mounted. Volumes based on a snapshot
must be mounted.
To add an instance store volume, click Add New Volume, and select Instance Store from the
Type list. Fill in the other information as required.
When you launch an instance from your new AMI, these additional volumes are automatically initialized
and mounted. These volumes don't contain data from the instance store volumes of the running instance from which you based your AMI.
9.
Click Create Image to start creating the AMI.
To view the status of your AMI, go to the AMIs page. While your AMI is being created, its status is
pending. It takes a few minutes to complete the AMI creation process. When the process has completed,
the status of your AMI is available. If you go to the Snapshots page, you'll see that we created a
snapshot that's used to create the root device volume of any instance that you launch using your new
AMI.
When you are ready to delete your AMI and snapshot, see Deregistering Your AMI (p. 72).
To create an Amazon EBS-backed AMI from an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-image (AWS CLI)
• ec2-create-image (Amazon EC2 CLI)
• New-EC2Image (AWS Tools for Windows PowerShell)
Creating an Instance Store-Backed Windows
AMI
To create an instance store-backed Windows AMI, first launch and customize a Windows instance, then
bundle the instance, and register an AMI from the manifest that's created during the bundling process.
Important
The only Windows AMIs that can be backed by instance store are those for Windows Server
2003. Instance store-backed instances don't have the available disk space required for later
versions of Windows Server.
If you need to create an instance store-backed Linux AMI, see Creating an Instance Store-Backed Linux
AMI in the Amazon EC2 User Guide for Linux Instances.
The AMI creation process is different for Amazon EBS-backed AMIs. For more information about the
differences between Amazon EBS-backed and instance store-backed instances, and how to determine
the root device type for your instance, see Root Device Volume (p. 8). If you need to create an Amazon
EBS-backed Windows AMI, see Creating an Amazon EBS-Backed Windows AMI (p. 62).
Contents
• Instance Store-Backed Windows AMIs (p. 65)
• Preparing to Create an Instance Store-Backed Windows AMI (p. 65)
• Bundling an Instance Store-Backed Windows Instance (p. 66)
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• Registering an Instance Store-Backed Windows AMI (p. 67)
Instance Store-Backed Windows AMIs
Instances launched from an AMI backed by instance store use an instance store volume as the root
device volume. The image of the root device volume of an instance store-backed AMI is initially stored
in Amazon S3. When an instance is launched using an instance store-backed AMI, the image of its root
device volume is copied from Amazon S3 to the root partition of the instance. The root device volume is
then used to boot the instance.
When you create an instance store-backed AMI, it must be uploaded to Amazon S3. Amazon S3 stores
data objects in buckets, which are similar in concept to directories. Buckets have globally unique names
and are owned by unique AWS accounts.
Bundling Process
The bundling process comprises the following tasks:
• Compress the image to minimize bandwidth usage and storage requirements.
• Encrypt and sign the compressed image to ensure confidentiality and authenticate the image against
its creator.
• Split the encrypted image into manageable parts for upload.
• Run Sysprep to strip computer-specific information (for example, the MAC address and computer
name) from the Windows AMI to prepare it for virtualization.
• Create a manifest file that contains a list of the image parts with their checksums.
• Put all components of the AMI in the Amazon S3 bucket that you specify when making the bundle request.
Storage Volumes
It is important to remember the following details about the storage for your instance when you create an
instance store-backed AMI:
• The root device volume (C:) is automatically attached when a new instance is launched from your new
AMI. The data on any other instance store volumes is deleted when the instance is bundled.
• The instance store volumes other than the root device volume (for example, D:) are temporary and
should be used only for short-term storage.
• You can add Amazon EBS volumes to your instance store-based instance. Amazon EBS volumes are
stored within Amazon S3 buckets and remain intact when the instance is bundled. Therefore, we recommend that you store all the data that must persist on Amazon EBS volumes, not instance store
volumes.
For more information about Amazon EC2 storage options, see Storage (p. 354).
Preparing to Create an Instance Store-Backed
Windows AMI
When you create an AMI, you start by basing it on an instance.You can customize the instance to include
the data and software that you need. As a result, any instance that you launch from your AMI has everything
that you need.
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Bundling an Instance Store-Backed Windows Instance
To launch an instance store-backed Windows instance
1.
Open the Amazon EC2 console.
2.
In the navigation pane, click AMIs. Select an instance store-backed AMI that is similar to the AMI
that you want to create. To view the instance store-backed Windows AMIs, select the following options
from the Filter lists: Public images, Instance store images, and then Windows.
3.
4.
You can select any public AMI that uses the version of Windows Server that you want for your AMI.
However, you must select an instance store-backed AMI; don't start with an Amazon EBS-backed
AMI.
Click Launch to launch an instance of the instance store-backed AMI that you've selected. Accept
the default values as you step through the wizard.
While the instance is running, connect to it and customize it. For example, you can perform any of
the following on your instance:
• Install software and applications.
• Copy data.
• Reduce start time by deleting temporary files, defragmenting your hard drive, and zeroing out free
space.
• Create a new user account and add it to the Administrators group.
Tip
If you are sharing your AMI, these credentials can be provided for RDP access without
disclosing your default Administrator password.
• Configure settings using EC2Config. For example, to generate a random password for your instance
when you launch it from this AMI, enable the Ec2SetPassword plugin; otherwise, the current Administrator password is used. For more information, see Configuring a Windows Instance Using
the EC2Config Service (p. 153).
5.
If the instance uses RedHat drivers to access Xen virtualized hardware, upgrade to Citrix drivers
before you create an AMI. For more information, see Upgrading PV Drivers on Your Windows
AMI (p. 169).
Bundling an Instance Store-Backed Windows Instance
Now that you've customized your instance, you can bundle the instance to create an AMI, using either
the AWS Management Console or the command line.
To bundle an instance store-backed Windows instance using the console
1.
Determine whether you'll use an existing Amazon S3 bucket for your new AMI or create a new one.
To create a new Amazon S3 bucket, use the following steps:
a.
b.
c.
Open the Amazon S3 console.
Click Create Bucket.
Specify a name for the bucket and click Create.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Instances. Right-click the instance you set up in the previous procedure,
and select Bundle Instance (instance store AMI).
4.
In the Bundle Instance dialog box, fill in the requested information, and then click OK:
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• Amazon S3 bucket name: Specify the name of an S3 bucket that you own. The bundle files and
manifest will be stored in this bucket.
• Amazon S3 key name: Specify a prefix for the files that are generated by the bundle process.
The Bundle Instance dialog box confirms that the request to bundle the instance has succeeded,
and also provides the ID of the bundle task. Click Close.
To view the status of the bundle task, click Bundle Tasks in the navigation pane. The bundle task progresses through several states, including waiting-for-shutdown, bundling, and storing. If the
bundle task can't be completed successfully, the status is failed.
To bundle an instance store-backed Windows instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• bundle-instance (AWS CLI)
• ec2-bundle-instance (Amazon EC2 CLI)
• New-EC2InstanceBundle (AWS Tools for Windows PowerShell)
Registering an Instance Store-Backed Windows
AMI
Finally, you must register your AMI so that Amazon EC2 can locate it and launch instances from it.
Your new AMI is stored in Amazon S3. You'll incur charges for this storage until you deregister the AMI
and delete the bundle in Amazon S3.
If you make any changes to the source AMI stored in Amazon S3, you must deregister and reregister the
AMI before the changes take effect.
To register an instance store-backed Windows AMI from the AMI page in the console
1.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click AMIs. By default, the console displays the AMIs that you own.
Click Actions and select Register new AMI.
4.
In the Register Image dialog box, provide the AMI Manifest Path and then click Register.
To register an instance store-backed Windows AMI from the Bundle Tasks page in the
console
1.
On the navigation pane, click Bundle Tasks.
2.
3.
Select the bundle task, and click Register as an AMI.
A dialog displays the AMI manifest path. Click Register, and then click Close in the confirmation
dialog box.
To register an instance store-backed Windows AMI using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• register-image (AWS CLI)
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Copying an AMI
• ec2-register (Amazon EC2 CLI)
• Register-EC2Image (AWS Tools for Windows PowerShell)
To view your new AMI, click AMIs in the navigation pane, and ensure the Owned by me filter option is
selected.
Copying an AMI
You can easily copy the Amazon Machine Images (AMIs) that you own to other AWS regions and scale
your applications to take advantage of AWS's geographically diverse regions.
Note
AMIs with encrypted volumes cannot be copied using the AWS Management Console. Instead,
you must copy each volume's snapshot to the target region and create a new AMI in that region
using the copied snapshots in the block device mappings.
Copying your AMIs provides the following benefits:
• Consistent global deployment:You can copy an AMI from one region to another, enabling you to launch
consistent instances based from the same AMI into different regions.
• Scalability: You can more easily design and build world-scale applications that meet the needs of your
users, regardless of their location.
• Performance: You can increase performance by distributing your application, as well as locating critical
components of your application in closer proximity to your users.You can also take advantage of regionspecific features, such as instance types or other AWS services.
• High availability: You can design and deploy applications across AWS regions, to increase availability.
AMI Copy
You can copy both Amazon EBS-backed AMIs and instance-store-backed AMIs. You can copy an AMI
to as many regions as you like.You can also copy an AMI to the same region. Each copy of an AMI results
in a new AMI with its own unique AMI ID. When you launch an instance from an AMI, we launch it into
the same region as the AMI you select, as shown in the following diagram.
When you copy an AMI, the new AMI is fully independent of the source AMI; there is no link to the original
(source) AMI. You can modify the new AMI without affecting the source AMI. The reverse is also true:
you can modify the source AMI without affecting the new AMI. Therefore, if you make changes to the
source AMI and want those changes to be reflected in the AMI in the destination region, you must recopy
the source AMI to the destination region.
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We don't copy launch permissions, user-defined tags, or Amazon S3 bucket permissions from the source
AMI to the new AMI. After the copy operation is complete, you can apply launch permissions, user-defined
tags, and Amazon S3 bucket permissions to the new AMI. AMIs with encrypted volumes cannot be copied.
There are no charges for copying an AMI. However, standard storage and data transfer rates apply.
Copying an Amazon EC2 AMI
Prior to copying an AMI, you must ensure that the contents of the source AMI are updated to support
running in a different region. For example, you should update any database connection strings or similar
application configuration data to point to the appropriate resources. Otherwise, instances launched from
the new AMI in the destination region may still use the resources from the source region, which can impact
performance and cost.
You can copy an AMI using the AWS Management Console or the command line.
To copy an AMI using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
From the navigation bar, select the region that contains the AMI to copy.
In the navigation pane, click AMIs.
Select the AMI to copy, click Actions, and then click Copy AMI. If your AMI has encrypted volumes,
see Copying an Amazon EC2 AMI with Encrypted Volumes (p. 70).
Note
AMIs with encrypted volumes cannot be copied using the AWS Management Console. Instead, you must copy each volume's snapshot to the target region and create a new AMI
in that region using the copied snapshots in the block device mappings.
5.
In the AMI Copy page, set the following fields, and then click Copy AMI:
• Destination region: Select the region to which you want to copy the AMI.
• Name: Specify a name for the new AMI.
• Description: By default, the description includes information about the source AMI so that you
can identify a copy from the original. You can change this description as necessary.
6.
We display a confirmation page to let you know that the copy operation has been initiated and provide
you with the ID of the new AMI.
To check on the progress of the copy operation immediately, click the provided link to switch to the
destination region. To check on the progress later, click Done, and then when you are ready, use
the navigation pane to switch to the destination region.
The initial status of the destination AMI is pending and the operation is complete when the status
is available.
To copy an AMI using the command line
Copying an AMI from the command line requires that you specify both the source and destination regions.
You specify the source region using the --source-region parameter. For the destination region, you
have two options:
• Use the --region parameter.
• Set an environmental variable. For more information, see Setting up the CLI Tools (Windows).
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Copying an Amazon EC2 AMI with Encrypted Volumes
You can copy an AMI using one of the following commands. For more information about these command
line interfaces, see Accessing Amazon EC2 (p. 3).
• copy-image (AWS CLI)
• ec2-copy-image (Amazon EC2 CLI)
• Copy-EC2Image (AWS Tools for Windows PowerShell)
Copying an Amazon EC2 AMI with Encrypted
Volumes
AMIs with encrypted volumes cannot be copied using the AWS Management Console. However, you can
manually copy the Amazon EBS volume snapshots from your source region to your destination region,
and then register a new AMI in the destination region with the copied snapshots. This will give you the
same end result as copying the AMI using the AWS Management Console. The following procedure
demonstrated how to do this with the AWS CLI, but you can also use the Amazon EC2 CLI or the SDK
tools if you prefer.
To copy an Amazon EC2AMI with encrypted volumes using the AWS CLI
1.
Collect the needed information for the AMI you would like to copy with the describe-images command.
Take note of the following:
• VirtualizationType
• SriovNetSupport
• BlockDeviceMappings, including the SnapshotId, VolumeType, and Encrypted values
• Architecture
• RootDeviceName
C:\>
{
aws ec2 describe-images --region us-west-2 --image-id ami-1a2b3c4d
"Images": [
{
"VirtualizationType": "hvm",
"Name": "ec2-encrypted-volume-ami",
"Hypervisor": "xen",
"SriovNetSupport": "simple",
"ImageId": "ami-1a2b3c4d",
"State": "available",
"BlockDeviceMappings": [
{
"DeviceName": "/dev/xvda",
"Ebs": {
"DeleteOnTermination": true,
"SnapshotId": "snap-2345bcde",
"VolumeSize": 8,
"VolumeType": "gp2",
"Encrypted": false
}
},
{
"DeviceName": "/dev/sdb",
"Ebs": {
"DeleteOnTermination": false,
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"SnapshotId": "snap-3456cdef",
"VolumeSize": 100,
"VolumeType": "gp2",
"Encrypted": false
}
},
{
"DeviceName": "/dev/sdc",
"Ebs": {
"DeleteOnTermination": false,
"SnapshotId": "snap-abcd1234",
"VolumeSize": 150,
"VolumeType": "gp2",
"Encrypted": true
}
}
],
"Architecture": "x86_64",
"ImageLocation": "012345678910/ec2-encrypted-volume-ami",
"RootDeviceType": "ebs",
"OwnerId": "012345678910",
"RootDeviceName": "/dev/xvda",
"Public": false,
"ImageType": "machine",
"Description": "/dev/xvdc is encrypted"
}
]
}
2.
Copy each Amazon EBS snapshot contained in the AMI to the destination region for your new AMI.
This can be done in the AWS Management Console or with the command line tools. It is helpful to
note in the snapshot description which device the snapshot is for. This will help you configure the
block device mapping on your new AMI later.The following command copies the snapshot associated
with /dev/sdc on our AMI.
C:\> aws ec2 copy-snapshot --source-region us-west-2 --source-snapshot-id
snap-abcd1234 --destination-region us-east-1 --description "Copy of /dev/sdc
from ami-1a2b3c4d"
{
"SnapshotId": "snap-4321dcba"
}
3.
Register your new AMI with the copied snapshots in the block device mapping and the information
you recorded earlier using the register-image command. For more information, see register-image.
C:\> aws ec2 register-image --region us-east-1 --name "my-copied-ami" -architecture x86_64 --root-device-name /dev/xvda --block-device-mappings
"[{\"DeviceName\":\"/dev/xvda\",\"Ebs\":{\"DeleteOnTermination\":true,\"Snap
shotId\":\"snap-5432edcb\",\"VolumeType\":\"gp2\"}},{\"Device
Name\":\"/dev/sdb\",\"Ebs\":{\"DeleteOnTermination\":false,\"Snapshot
Id\":\"snap-6543fedc\",\"VolumeType\":\"gp2\"}},{\"Device
Name\":\"/dev/sdc\",\"Ebs\":{\"DeleteOnTermination\":false,\"Snapshot
Id\":\"snap-4321dcba\",\"VolumeType\":\"gp2\"}}]" --virtualization-type
hvm --sriov-net-support simple
{
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"ImageId": "ami-1d2c3b4a"
}
4.
(Optional) Run the describe-images command on your new AMI and compare it to the original to
ensure that everything is correct. If not, you can deregister the image, make your corrections, and
try registering the AMI again. For more information, see deregister-image.
Stopping a Pending AMI Copy Operation
You can stop a pending AMI copy using the AWS Management Console or the command line.
To stop an AMI copy operation using the console
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select the destination region from the region selector.
3.
4.
5.
In the navigation pane, click AMIs.
Select the AMI you want to stop copying, click Actions, and then click Deregister.
When asked for confirmation, click Continue.
To stop an AMI copy operation using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• deregister-image (AWS CLI)
• ec2-deregister (Amazon EC2 CLI)
• Unregister-EC2Image (AWS Tools for Windows PowerShell)
Deregistering Your AMI
You can deregister an AMI when you have finished using it. After you deregister an AMI, you can't use
it to launch new instances.
When you deregister an AMI, it doesn't affect any instances that you've already launched from the AMI.
You'll continue to incur usage costs for these instances. Therefore, if you are finished with these instances,
you should terminate them.
The procedure that you'll use to clean up your AMI depends on whether it is backed by Amazon EBS or
instance store.
Topics
• Cleaning Up Your Amazon EBS-Backed AMI (p. 72)
• Cleaning Up Your Instance Store-Backed AMI (p. 73)
Cleaning Up Your Amazon EBS-Backed AMI
When you deregister an Amazon EBS-backed AMI, it doesn't affect the snapshot that we created when
you created the AMI. You'll continue to incur usage costs for this snapshot in Amazon EBS. Therefore,
if you are finished with the snapshot, you should delete it.
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The following diagram illustrates the process for cleaning up your Amazon EBS-backed AMI.
To clean up your Amazon EBS-backed AMI
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click AMIs. Select the AMI, click Actions, and then click Deregister. When
prompted for confirmation, click Continue.
The AMI status is now unavailable.
3.
4.
In the navigation pane, click Snapshots. Select the snapshot and click Delete Snapshot. When
prompted for confirmation, click Yes, Delete.
(Optional) If you are finished with an instance that you launched from the AMI, terminate it. In the
navigation pane, click Instances. Select the instance, click Actions, and then click Terminate. When
prompted for confirmation, click Yes, Terminate.
Cleaning Up Your Instance Store-Backed AMI
When you deregister an instance store-backed AMI, it doesn't affect the files that you uploaded to Amazon
S3 when you created the AMI.You'll continue to incur usage costs for these files in Amazon S3. Therefore,
if you are finished with these files, you should delete them.
The following diagram illustrates the process for cleaning up your instance store-backed AMI.
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To clean up your instance store-backed AMI
1.
Deregister the AMI using the ec2-deregister command as follows.
ec2-deregister ami_id
The AMI status is now unavailable.
2.
Delete the bundle using the ec2-delete-bundle command as follows.
ec2-delete-bundle -b myawsbucket/myami -a your_access_key_id -s
your_secret_access_key -p image
3.
(Optional) If you are finished with an instance that you launched from the AMI, you can terminate it
using the ec2-terminate-instances command as follows.
ec2-terminate-instances instance_id
4.
(Optional) If you are finished with the Amazon S3 bucket that you uploaded the bundle to, you can
delete the bucket. To delete an Amazon S3 bucket, open the Amazon S3 console, select the bucket,
click Actions, and then click Delete.
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Instance Types
Amazon EC2 Instances
If you're new to Amazon EC2, see the following topics to get started:
• What Is Amazon EC2? (p. 1)
• Setting Up with Amazon EC2 (p. 14)
• Getting Started with Amazon EC2 Windows Instances (p. 20)
• Instance Lifecycle (p. 127)
Before you launch a production environment, you need to answer the following questions.
Q. What purchasing option best meets my needs?
Amazon EC2 supports On-Demand Instances (the default), Spot Instances, and Reserved Instances.
For more information, see Amazon EC2 Pricing.
Q. What instance type best meets my needs?
Amazon EC2 provides different instance types to enable you to choose the CPU, memory, storage,
and networking capacity that you need to run your applications. For more information, see Instance
Types (p. 75).
Q. Which type of root volume meets my needs?
Each instance is backed by Amazon EBS or backed by instance store. Select an AMI based on which
type of root volume you need. For more information, see Storage for the Root Device (p. 49).
Q. Would I benefit from using a virtual private cloud?
If you can launch instances in either EC2-Classic or EC2-VPC, you'll need to decide which platform
meets your needs. For more information, see Supported Platforms (p. 316) and Amazon EC2 and
Amazon Virtual Private Cloud (VPC) (p. 313).
Instance Types
When you launch an instance, the instance type that you specify determines the hardware of the host
computer used for your instance. Each instance type offers different compute, memory, and storage
capabilities. Select an instance type based on the requirements of the application or software that you
plan to run on your instance.
Amazon EC2 provides each instance with a consistent and predictable amount of CPU capacity, regardless
of its underlying hardware.
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Available Instance Types
Amazon EC2 dedicates some resources of the host computer, such as CPU, memory, and instance
storage, to a particular instance. Amazon EC2 shares other resources of the host computer, such as the
network and the disk subsystem, among instances. If each instance on a host computer tries to use as
much of one of these shared resources as possible, each receives an equal share of that resource.
However, when a resource is under-utilized, an instance can consume a higher share of that resource
while it's available.
Each instance type provides higher or lower minimum performance from a shared resource. For example,
instance types with high I/O performance have a larger allocation of shared resources. Allocating a larger
share of shared resources also reduces the variance of I/O performance. For most applications, moderate
I/O performance is more than enough. However, for applications that require greater or more consistent
I/O performance, consider an instance type with higher I/O performance.
The maximum transmission unit (MTU) for an instance depends on its instance type.The following instance
types provide 9001 MTU (jumbo frames): CC2, C3, R3, CG1, CR1, G2, HS1, HI1, I2, T2, and M3. The
other instance types provide 1500 MTU (Ethernet v2 frames).
To obtain additional, dedicated capacity for Amazon EBS I/O, you can launch some instance types as
Amazon EBS–optimized instances. For more information, see Amazon EBS–Optimized Instances (p. 94).
To optimize your instances for high performance computing (HPC) applications, you can launch some
instance types in a placement group. For more information, see Placement Groups (p. 95).
Available Instance Types
Amazon EC2 provides the current and previous generation instance types listed in the following tables.
There is a limit on the total number of instances that you can launch in a region, and there are additional
limits on some instance types. For more information, see How many instances can I run in Amazon EC2?
Current Generation Instances
For the best performance, we recommend that you use current generation instance types and HVM AMIs
when you launch new instances. For more information on current generation instance types, see the
Amazon EC2 Instances detail page.
Instance Family
Current Generation Instance Types
General purpose
t2.micro | t2.small | t2.medium | m3.medium | m3.large |
m3.xlarge | m3.2xlarge
Compute optimized
c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | c3.8xlarge
Memory optimized
r3.large | r3.xlarge | r3.2xlarge | r3.4xlarge | r3.8xlarge
Storage optimized
i2.xlarge | i2.2xlarge | i2.4xlarge | i2.8xlarge |
hs1.8xlarge
GPU instances
g2.2xlarge
Previous Generation Instances
Amazon Web Services offers previous generation instances for users who have optimized their applications
around these instances and have yet to upgrade. We encourage you to use the latest generation of instances to get the best performance, but we will continue to support these previous generation instances
after new instances launch. If you are currently using a previous generation instance and would like to
see which one would be a suitable upgrade, see Upgrade Paths.
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Hardware Specifications
Instance Family
Previous Generation Instance Types
General purpose
m1.small | m1.medium | m1.large | m1.xlarge
Compute optimized
c1.medium | c1.xlarge | cc2.8xlarge
Memory optimized
m2.xlarge | m2.2xlarge | m2.4xlarge | cr1.8xlarge
Storage optimized
hi1.4xlarge
GPU instances
cg1.4xlarge
Micro instances
t1.micro
Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
To determine which instance type best meets your needs, we recommend that you launch an instance
and use your own benchmark application. Because you pay by the instance hour, it's convenient and inexpensive to test multiple instance types before making a decision. If your needs change, you can resize
your instance later on. For more information, see Resizing Your Instance (p. 97).
T2 Instances
T2 instances are designed to provide moderate baseline performance and the capability to burst to significantly higher performance as required by your workload. They are intended for workloads that don't use
the full CPU often or consistently, but occasionally need to burst. T2 instances are well suited for general
purpose workloads, such as web servers, developer environments, and small databases. For more information about T2 instance pricing and additional hardware details, see Instance Type Details.
T2 instances are currently available in three instance sizes: t2.micro, t2.small, and t2.medium.
Customers can launch T2 instances using the AWS management console, Amazon EC2 command line
interface, and the AWS SDKs. T2 instances are available as On-Demand or Reserved Instances, but
they cannot be purchased as Spot Instances. For more information, see Amazon EC2 Instance Purchasing
Options. T2 instance types are available as Amazon EBS-backed instances only.
Topics
• Hardware Specifications (p. 77)
• CPU Credits (p. 78)
• EC2-VPC-only Support (p. 79)
• HVM AMI Support (p. 80)
• Default T2 Instance Limits (p. 80)
• Monitoring Your CPU Credits (p. 80)
Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
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CPU Credits
A CPU Credit provides the performance of a full CPU core for one minute.Traditional Amazon EC2 instance
types provide fixed performance, while T2 instances provide a baseline level of CPU performance with
the ability to burst above that baseline level. The baseline performance and ability to burst are governed
by CPU credits.
What is a CPU credit?
One CPU credit is equal to one vCPU running at 100% utilization for one minute. Other combinations of
vCPUs, utilization, and time are also equal one CPU credit, such as one vCPU running at 50% utilization
for two minutes, or two vCPUs (on t2.medium instances, for example) running at 25% utilization for two
minutes.
How are CPU credits earned?
Each T2 instance starts with a healthy initial CPU credit balance and then continuously (at a millisecondlevel resolution) receives a set rate of CPU credits per hour, depending on instance size. The accounting
process for whether credits are accumulated or spent also happens at a millisecond-level resolution, so
you don't have to worry about overspending CPU credits; a short burst of CPU takes a small fraction of
a CPU credit.
When a T2 instance uses fewer CPU resources than its base performance level allows (such as when it
is idle), the unused CPU credits (or the difference between what was earned and what was spent) are
stored in the credit balance for up to 24 hours, building CPU credits for bursting. When your T2 instance
requires more CPU resources than its base performance level allows, it uses credits from the CPU
credit balance to burst up to 100% utilization. The more credits your T2 instance has for CPU resources,
the more time it can burst beyond its base performance level and the better it will perform when more
performance is needed.
The following table lists the initial CPU credit allocation received at launch, the rate at which CPU credits
are received, the baseline performance level as a percentage of a full core performance, and the maximum
CPU credit balance that an instance can accrue.
Instance type
n
a
Iitil CPU credits earned per hour
U
P
C
ce
*rd
ti
Base
performance
(CPU utilization)
Maximum CPU
credit balance
t2.micro
03 6
10%
144
t2.small
03 12
20%
288
t2.medium
06 24
40%**
576
* There are limits to how many of your T2 instances will launch or start with the initial credit, which by
default is set to 100 launches or starts per 24-hour period by region. If you'd like to increase this limit,
you can file a customer support limit increase request by using the Amazon EC2 Instance Request
Form.
** t2.medium instances have two vCPUs. The base performance is an aggregate of the two vCPUs;
this can be 40% utilization on one vCPU, 20% each on two vCPUs, or any combination that does not
exceed 40%.
The t2.micro and t2.small instance types launch with an initial balance of 30 CPU credits, and the
t2.medium instance type launches with 60 CPU credits. This initial credit balance is designed to provide
a good startup experience. The maximum credit balance for an instance is equal to the number of CPU
credits received per hour times 24 hours. For example, a t2.micro instance earns 6 CPU credits per
hour and can accumulate a maximum CPU credit balance of 144 CPU credits.
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Do CPU credits expire?
Yes. Unused credits (including the initial credit earned at launch time) expire 24 hours after they are
earned, and any expired credits are removed from the CPU credit balance at that time. Additionally, the
CPU credit balance for an instance does not persist between instance stops and starts; stopping an instance
causes it to lose its credit balance entirely, but when it restarts it will receive its initial credit balance again.
For example, if a t2.small instance had a CPU utilization of 5% for the hour, it would have used 3 CPU
credits (5% of 60 minutes), but it would have earned 12 CPU credits during the hour, so the difference
of 9 CPU credits would be added to the CPU credit balance. Any CPU credits in the balance that reached
their 24 hour expiration date during that time (which could be as many as 12 credits if the instance was
completely idle 24 hours ago) would also be removed from the balance. If the amount of credits expired
is greater than those earned, the credit balance will go down; conversely, if the amount of credits expired
is fewer than those earned, the credit balance will go up.
What happens if I use all of my credits?
If your instance uses all of its CPU credit balance, performance remains at the baseline performance
level. If your instance is running low on credits, your instance’s CPU credit consumption (and therefore
CPU performance) is gradually lowered to the base performance level over a 15-minute interval, so you
will not experience a sharp performance drop-off when your CPU credits are depleted. If your instance
consistently uses all of its CPU credit balance, we recommend a larger T2 size or a fixed performance
instance type such as M3 or C3.
EC2-VPC-only Support
T2 instances must be launched into an Amazon Virtual Private Cloud (VPC); they are not supported on
the EC2-Classic platform. Amazon VPC enables you to launch AWS resources into a virtual network that
you've defined.You cannot change the instance type of an existing EC2-Classic instance to a T2 instance
type. For more information on EC2-Classic and EC2-VPC, see Supported Platforms (p. 316).
If your account supports EC2-Classic and you have not created any VPCs, you can do one of the following
to launch a T2 instance:
• Create a VPC, and launch your instance into it. For more information, see Getting Started with Amazon
VPC in the Amazon VPC Getting Started Guide.
• Launch a T2 instance using the launch wizard in the Amazon EC2 console. The wizard creates a
nondefault VPC in your account with the following attributes:
• A subnet in each Availability Zone. By default, the wizard selects the subnet in the first Availability
Zone in which to launch your instance. The public IP addressing attribute of each subnet is set to
true so that instances launched into each subnet receive a public IP address. For more information,
see Modifying Your Subnet's Public IP Addressing Behavior in the Amazon VPC User Guide.
• An Internet gateway, and a main route table that routes the VPC's traffic to the Internet gateway.
This enables your VPC (and instances in your subnet) to communicate over the Internet. For more
information about Internet gateways, see Adding an Internet Gateway to Your VPC.
• A default network ACL associated with all subnets, and a default security group. For more information
about network ACLs, see Network ACLs. For more information about security groups, see Security
Groups for Your VPC.
If you are using the Amazon EC2 API, the Amazon EC2 CLI, or the AWS CLI, you must have a default
VPC in which to launch your T2 instance, or you must specify a subnet ID or network interface ID in the
request.
By launching an instance into a VPC, you can leverage a number of features that are available only on
the EC2-VPC platform; such as assigning multiple private IP addresses to your instances, or changing
your instances' security groups. For more information about the benefits of using a VPC, see Amazon
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EC2 and Amazon Virtual Private Cloud (VPC) (p. 313).You can take steps to migrate your resources from
EC2-Classic to EC2-VPC. For more information, see Migrating from EC2-Classic to a VPC (p. 318).
HVM AMI Support
T2 instances require HVM AMIs.
Default T2 Instance Limits
We limit the number of each T2 instance type that you can run simultaneously to 20. If you need more
than 20 T2 instances, you can request more by using the Amazon EC2 Instance Request Form.
Monitoring Your CPU Credits
You can see the credit balance for each T2 instance presented in the Amazon EC2 per-instance metrics
of the CloudWatch console.T2 instances have two metrics, CPUCreditUsage and CPUCreditBalance.
The CPUCreditUsage metric indicates the number of CPU credits used during the measurement period.
The CPUCreditBalance metric indicates the number of unused CPU credits a T2 instance has earned.
This balance is depleted during burst time as CPU credits are spent more quickly than they are earned.
The following table describes the new available CloudWatch metrics; for more information on using these
metrics in CloudWatch, see View Amazon EC2 Metrics (p. 204).
Metric
Description
CPUCreditUsage
(Only valid for T2 instances) The number of CPU credits consumed
during the specified period.
This metric identifies the amount of time during which physical CPUs
were used for processing instructions by virtual CPUs allocated to
the instance.
Note
CPU Credit metrics are available at a 5 minute frequency.
Units: Count
CPUCreditBalance
(Only valid for T2 instances) The number of CPU credits that an
instance has accumulated.
This metric is used to determine how long an instance can burst
beyond its baseline performance level at a given rate.
Note
CPU Credit metrics are available at a 5 minute frequency.
Units: Count
I2 Instances
I2 instances are optimized to deliver tens of thousands of low-latency, random I/O operations per second
(IOPS) to applications. They are well suited for the following scenarios:
• NoSQL databases (for example, Cassandra and MongoDB)
• Clustered databases
• Online transaction processing (OLTP) systems
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You can cluster I2 instances in a placement group. Placement groups provide low latency and highbandwidth connectivity between the instances within a single Availability Zone. For more information, see
Placement Groups (p. 95).
You can enable enhanced networking capabilities for I2 instances. For more information, see Enabling
Enhanced Networking on Windows Instances in a VPC (p. 350).
Topics
• Hardware Specifications (p. 81)
• I2 Instance Limitations (p. 81)
• SSD Storage (p. 81)
• SSD I/O Performance (p. 81)
Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
I2 Instance Limitations
We limit the number of I2 instances that you can run. If you need more I2 instances than the default limits
described in the following table, you can request more I2 instances using the Amazon EC2 Instance Request Form.
Instance Size
Default Instance Limit
i2.xlarge
8
i2.2xlarge
8
i2.4xlarge
4
i2.8xlarge
2
SSD Storage
The primary data storage for I2 instances is SSD-based instance storage. Like all instance storage, these
volumes persist only for the life of the instance. When you terminate an instance, the applications and
data in its instance store is erased. When you use an Amazon EBS-backed AMI, you can start and stop
your instance. However, when you stop an instance, the data stored in the Amazon EBS volume persists,
but data in the instance store volumes doesn't persist. We recommend that you regularly back up or
replicate the data you've stored in instance storage.
For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
SSD I/O Performance
As you fill the SSD-based instance storage for your instance, the number of write IOPS that you can
achieve decreases. This is due to the extra work the SSD controller must do to find available space, rewrite
existing data, and erase unused space so that it can be rewritten. This process of garbage collection
results in internal write amplification to the SSD, expressed as the ratio of SSD write operations to user
write operations. This decrease in performance is even larger if the write operations are not in multiples
of 4,096 bytes or not aligned to a 4,096-byte boundary. If you write a smaller amount of bytes or bytes
that are not aligned, the SSD controller must read the surrounding data and store the result in a new
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location. This pattern results in significantly increased write amplification, increased latency, and dramatically reduced I/O performance.
SSD controllers can use several strategies to reduce the impact of write amplification. One such strategy
is to reserve space in the SSD instance storage so that the controller can more efficiently manage the
space available for write operations. This is called over-provisioning. The SSD-based instance store
volumes provided to an I2 instance don't have any space reserved for over-provisioning. To reduce write
amplification, you should leave 10% of the volume unpartitioned so that the SSD controller can use it for
over-provisioning. This decreases the storage that you can use, but increases performance.
Note
Windows instances do not yet support TRIM.
HI1 Instances
HI1 instances (hi1.4xlarge) can deliver tens of thousands of low-latency, random I/O operations per
second (IOPS) to applications. They are well suited for the following scenarios:
• NoSQL databases (for example, Cassandra and MongoDB)
• Clustered databases
• Online transaction processing (OLTP) systems
You can cluster HI1 instances in a placement group. For more information, see Placement Groups (p. 95).
By default, you can run up to two hi1.4xlarge instances. If you need more than two hi1.4xlarge
instances, you can request more using the Amazon EC2 Instance Request Form.
Topics
• Hardware Specifications (p. 82)
• Disk I/O Performance (p. 82)
• SSD Storage (p. 82)
Hardware Specifications
The hi1.4xlarge instance type is based on solid-state drive (SSD) technology.
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
Disk I/O Performance
HI1 Windows instances deliver approximately 90,000 4 KB random read IOPS and between 9,000 and
75,000 4 KB random write IOPS.
The maximum sequential throughput is approximately 2 GB read per second and 1.1 GB write per second.
SSD Storage
This section contains important information you need to know about SSD storage. With SSD storage:
• The primary data source is an instance store with SSD storage.
• Read performance is consistent and write performance can vary.
• Write amplification can occur.
• The TRIM command is not currently supported.
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Instance Store with SSD Storage
The hi1.4xlarge instances use an Amazon EBS-backed root device. However, their primary data
storage is provided by the SSD volumes in the instance store. Like other instance store volumes, these
instance store volumes persist only for the life of the instance. Because the root device of the hi1.4xlarge
instance is Amazon EBS-backed, you can still start and stop your instance. When you stop an instance,
your application persists, but your production data in the instance store does not persist. For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
Variable Write Performance
Write performance depends on how your applications utilize logical block addressing (LBA) space. If your
applications use the total LBA space, write performance can degrade by about 90 percent. Benchmark
your applications and monitor the queue depth (the number of pending I/O requests for a volume) and
I/O size.
Write Amplification
Write amplification refers to an undesirable condition associated with flash memory and SSDs, where
the actual amount of physical information written is a multiple of the logical amount intended to be written.
Because flash memory must be erased before it can be rewritten, the process to perform these operations
results in moving (or rewriting) user data and metadata more than once. This multiplying effect increases
the number of writes required over the life of the SSD, which shortens the time that it can reliably operate.
The hi1.4xlarge instances are designed with a provisioning model intended to minimize write amplification.
Random writes have a much more severe impact on write amplification than serial writes. If you are
concerned about write amplification, allocate less than the full tebibyte of storage for your application
(also known as over provisioning).
The TRIM Command
The TRIM command enables the operating system to notify an SSD that blocks of previously saved data
are considered no longer in use. TRIM limits the impact of write amplification.
TRIM support is not available for HI1 instances. For TRIM support, use I2 instances. For more information,
see I2 Instances (p. 80).
HS1 Instances
HS1 instances (hs1.8xlarge) provide very high storage density and high sequential read and write
performance per instance. They are well suited for the following scenarios:
• Data warehousing
• Hadoop/MapReduce
• Parallel file systems
You can cluster HS1 instances in a placement group. For more information, see Placement Groups (p. 95).
By default, you can run up to two HS1 instances. If you need more than two HS1 instances, you can request
more using the Amazon EC2 Instance Request Form.
Topics
• Hardware Specifications (p. 84)
• Storage Information (p. 84)
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Hardware Specifications
HS1 instances support both Amazon Elastic Block Store (Amazon EBS)-backed and instance storebacked Amazon Machine Images (AMIs). HS1 instances support both paravirtual (PV) and hardware
virtual machine (HVM) AMIs.
HS1 instances do not currently support Amazon EBS optimization, but provide high bandwidth networking
and can also be used with Provisioned IOPS (SSD) volumes for improved consistency and performance.
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
Storage Information
This section contains important information you need to know about the storage used with HS1 instances.
Instance Store with HS1 Instances
HS1 instances support both instance store and Amazon EBS root device volumes. However, even when
using an Amazon EBS-backed instance, primary data storage is provided by the hard disk drives in the
instance store. Like other instance store volumes, these instance store volumes persist only for the life
of the instance. Therefore, when you stop an instance (when using an Amazon EBS-backed root volume),
your application persists, but your production data in the instance store does not persist. For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
Disk Initialization
If you plan to run an HS1 instance in a steady state for long periods of time, we recommend that you zero
the hard disks first for improved performance. This process can take as long as six hours to complete.
R3 Instances
R3 instances are optimized to deliver high memory performance and high sustainable bandwidth. They
are well suited for the following scenarios:
• Relational databases and NoSQL databases (for example, MongoDB)
• In-memory analytics
• Memcache/Redis applications (for example, Elasticache)
You can cluster R3 instances in a placement group. Placement groups provide low latency and highbandwidth connectivity between the instances within a single Availability Zone. For more information, see
Placement Groups (p. 95).
You can enable enhanced networking capabilities for R3 instances. For more information, see Enabling
Enhanced Networking on Windows Instances in a VPC (p. 350).
Topics
• Hardware Specifications (p. 85)
• HVM AMI Support (p. 85)
• Default R3 Instance Limits (p. 85)
• SSD Storage (p. 85)
• SSD I/O Performance (p. 85)
• TRIM Support (p. 85)
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Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
HVM AMI Support
R3 instances have high-memory (up to 244 GiB of RAM), and require 64-bit operating systems to take
advantage of that capacity. HVM AMIs provide superior performance in comparison to paravirtual (PV)
AMIs on high-memory instance types. For these reasons, R3 instances support 64-bit HVM AMIs only.
In addition, HVM AMIs are required to leverage the benefits of enhanced networking.
Default R3 Instance Limits
We limit the number of R3 instances that you can run simultaneously. If you need more R3 instances
than the default limits described in the following table, you can request more by using the Amazon EC2
Instance Request Form.
Instance Type
Default Instance Limit
r3.large
20
r3.xlarge
20
r3.2xlarge
20
r3.4xlarge
10
r3.8xlarge
5
SSD Storage
The primary data storage for R3 instances is SSD-based instance storage. Like all instance storage,
these volumes persist only for the life of the instance. When you terminate an instance, the applications
and data in its instance store are erased. When you use an Amazon EBS-backed AMI, you have the option
to stop your instance and restart it later; however, when you stop an instance, the data stored in the
Amazon EBS volumes persist, but data in the instance store volumes is lost. We recommend that you
regularly back up or replicate the data you've stored in instance storage.
For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
SSD I/O Performance
The largest R3 instances (r3.8xlarge) are capable of providing up to 150,000 4 kilobyte (KB) random
read IOPS and up to 130,000 4 KB random first write IOPS.
TRIM Support
Windows instances do not yet support TRIM.
GPU Instances
If you require high parallel processing capability, you'll benefit from using GPU instances, which provide
access to NVIDIA GPUs with up to 1,536 CUDA cores and 4 GB of video memory. You can use GPU
instances to accelerate many scientific, engineering, and rendering applications by leveraging the Compute
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Unified Device Architecture (CUDA) or OpenCL parallel computing frameworks. You can also use them
for graphics applications, including game streaming, 3-D application streaming, and other graphics
workloads.
GPU instances run as HVM-based instances. Hardware virtual machine (HVM) virtualization uses hardwareassist technology provided by the AWS platform. With HVM virtualization, the guest VM runs as if it were
on a native hardware platform, except that it still uses paravirtual (PV) network and storage drivers for
improved performance. This enables Amazon EC2 to provide dedicated access to one or more discrete
GPUs in each GPU instance.
You can cluster GPU instances into a placement group. Placement groups provide low latency and highbandwidth connectivity between the instances within a single Availability Zone. For more information, see
Placement Groups (p. 95).
Topics
• Hardware Specifications (p. 86)
• GPU Instance Limitations (p. 86)
• AMIs for GPU Instances (p. 86)
• Installing the NVIDIA Driver on Windows (p. 87)
Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
GPU Instance Limitations
GPU instances currently have the following limitations:
•
•
•
•
They aren't available in every region.
They must be launched from HVM AMIs.
They can't access the GPU unless the NVIDIA drivers are installed.
We limit the number of instances that you can run. For more information, see How many instances can
I run in Amazon EC2? in the Amazon EC2 FAQ. To request an increase in these limits, use the following
form: Request to Increase Amazon EC2 Instance Limit.
AMIs for GPU Instances
To help you get started, NVIDIA provides AMIs for GPU instances. These reference AMIs include the
NVIDIA driver, which enables full functionality and performance of the NVIDIA GPUs. For a list of AMIs
with the NVIDIA driver, see AWS Marketplace (NVIDIA GRID).
You can launch a CG1 instance using any HVM AMI.
You can launch a G2 instance using Windows Server 2012 and Windows Server 2008 R2 AMIs. If you
encounter the following error when launching a G2 instance, contact Customer Service or reach out
through the Amazon EC2 forum.
Client.UnsupportedOperation: Instances of type 'g2.2xlarge' may not be launched
from AMI <ami-id>.
After you launch a G2 instance, you can create your own AMI from the instance. However, if you create
a snapshot of the root volume of the instance, register it as an AMI, and then launch a G2 instance, you'll
get the Client.UnsupportedOperation error. To launch a G2 instance from your own AMI, you must
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create the AMI from a G2 instance using the console (select the instance, click Actions, and then click
Create Image), create-image (AWS CLI), or ec2-create-image (Amazon EC2 CLI).
Installing the NVIDIA Driver on Windows
To install the NVIDIA driver on your Windows instance, log on to your instance as the administrator using
Remote Desktop. You can download NVIDIA drivers from http://www.nvidia.com/Download/Find.aspx.
Select a driver for the NVIDIA GRID K520 (G2 instances) or Tesla M-Class M2050 (CG1 instances) for
your version of Windows Server. Open the folder where you downloaded the driver and double-click the
installation file to launch it. Follow the instructions to install the driver and reboot your instance as required.
To verify that the GPU is working properly, check Device Manager.
When using Remote Desktop, GPUs that use the WDDM driver model are replaced with a non-accelerated
Remote Desktop display driver. To access your GPU hardware, you must use a different remote access
tool, such as VNC. You can also use one of the GPU AMIs from the AWS Marketplace because they
provide remote access tools that support 3-D acceleration.
T1 Micro Instances
T1 Micro instances (t1.micro) provide a small amount of consistent CPU resources and allow you to
increase CPU capacity in short bursts when additional cycles are available. They are well suited for lower
throughput applications and websites that require additional compute cycles periodically.
Note
The t1.micro is a previous generation instance and it has been replaced by the t2.micro,
which has a much better performance profile. We recommend using the t2.micro instance
type instead of the t1.micro. For more information, see T2 Instances (p. 77).
The t1.micro instance is available as an Amazon EBS-backed instance only.
This documentation describes how t1.micro instances work so that you can understand how to apply
them. It's not our intent to specify exact behavior, but to give you visibility into the instance's behavior so
you can understand its performance.
Topics
• Hardware Specifications (p. 87)
• Optimal Application of T1 Micro Instances (p. 87)
• Available CPU Resources During Spikes (p. 89)
• When the Instance Uses Its Allotted Resources (p. 90)
• Comparison with the m1.small Instance Type (p. 91)
• AMI Optimization for Micro Instances (p. 93)
Hardware Specifications
For more information about the hardware specifications for each Amazon EC2 instance type, see Instance
Type Details.
Optimal Application of T1 Micro Instances
A t1.micro instance provides spiky CPU resources for workloads that have a CPU usage profile similar
to what is shown in the following figure.
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The instance is designed to operate with its CPU usage at essentially only two levels: the normal low
background level, and then at brief spiked levels much higher than the background level. We allow the
instance to operate at up to 2 EC2 compute units (ECUs) (one ECU provides the equivalent CPU capacity
of a 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor). The ratio between the maximum level and the
background level is designed to be large. We designed t1.micro instances to support tens of requests
per minute on your application. However, actual performance can vary significantly depending on the
amount of CPU resources required for each request on your application.
Your application might have a different CPU usage profile than that described in the preceding section.
The next figure shows the profile for an application that isn't appropriate for a t1.micro instance. The
application requires continuous data-crunching CPU resources for each request, resulting in plateaus of
CPU usage that the t1.micro instance isn't designed to handle.
The next figure shows another profile that isn't appropriate for a t1.micro instance. Here the spikes in
CPU use are brief, but they occur too frequently to be serviced by a micro instance.
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The next figure shows another profile that isn't appropriate for a t1.micro instance. Here the spikes
aren't too frequent, but the background level between spikes is too high to be serviced by a t1.micro
instance.
In each of the preceding cases of workloads not appropriate for a t1.micro instance, we recommend
that you consider using a different instance type. For more information about instance types, see Instance
Types (p. 75).
Available CPU Resources During Spikes
When your instance bursts to accommodate a spike in demand for compute resources, it uses unused
resources on the host. The amount available depends on how much contention there is when the spike
occurs. The instance is never left with zero CPU resources, whether other instances on the host are
spiking or not.
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When the Instance Uses Its Allotted Resources
We expect your application to consume only a certain amount of CPU resources in a period of time. If
the application consumes more than your instance's allotted CPU resources, we temporarily limit the instance so it operates at a low CPU level. If your instance continues to use all of its allotted resources, its
performance will degrade. We will increase the time that we limit its CPU level, thus increasing the time
before the instance is allowed to burst again.
If you enable CloudWatch monitoring for your t1.micro instance, you can use the "Avg CPU Utilization"
graph in the AWS Management Console to determine whether your instance is regularly using all its allotted CPU resources. We recommend that you look at the maximum value reached during each given
period. If the maximum value is 100%, we recommend that you use Auto Scaling to scale out (with additional t1.micro instances and a load balancer), or move to a larger instance type. For more information,
see the Auto Scaling Developer Guide.
The following figures show the three suboptimal profiles from the preceding section and what it might
look like when the instance consumes its allotted resources and we have to limit its CPU level. If the instance consumes its allotted resources, we restrict it to the low background level.
The next figure shows the situation with the long plateaus of data-crunching CPU usage. The CPU hits
the maximum allowed level and stays there until the instance's allotted resources are consumed for the
period. At that point, we limit the instance to operate at the low background level, and it operates there
until we allow it to burst above that level again. The instance again stays there until the allotted resources
are consumed and we limit it again (not seen on the graph).
The next figure shows the situation where the requests are too frequent. The instance uses its allotted
resources after only a few requests and so we limit it. After we lift the restriction, the instance maxes out
its CPU usage trying to keep up with the requests, and we limit it again.
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The next figure shows the situation where the background level is too high. Notice that the instance
doesn't have to be operating at the maximum CPU level for us to limit it. We limit the instance when it's
operating above the normal background level and has consumed its allotted resources for the given
period. In this case (as in the preceding one), the instance can't keep up with the work, and we limit it
again.
Comparison with the m1.small Instance Type
The t1.micro instance provides different levels of CPU resources at different times (up to 2 ECUs). By
comparison, the m1.small instance type provides 1 ECU at all times. The following figure illustrates the
difference.
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The following figures compare the CPU usage of a t1.micro instance with an m1.small instance for
the various scenarios we've discussed in the preceding sections.
The first figure that follows shows an optimal scenario for a t1.micro instance (the left graph) and how
it might look for an m1.small instance (the right graph). In this case, we don't need to limit the t1.micro
instance. The processing time on the m1.small instance would be longer for each spike in CPU demand
compared to the t1.micro instance.
The next figure shows the scenario with the data-crunching requests that used up the allotted resources
on the t1.micro instance, and how they might look with the m1.small instance.
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The next figure shows the frequent requests that used up the allotted resources on the t1.micro instance,
and how they might look on the m1.small instance.
The next figure shows the situation where the background level used up the allotted resources on the
t1.micro instance, and how it might look on the m1.small instance.
AMI Optimization for Micro Instances
We recommend that you follow these best practices when optimizing an AMI for the t1.micro instance
type:
• Design the AMI to run on 600 MB of RAM
• Limit the number of recurring processes that use CPU time (for example, cron jobs, daemons)
When you perform significant AMI or instance configuration changes (for example, enable server roles
or install large applications), you might see limited instance performance, because these changes can
be memory intensive and require long-running CPU resources. We recommend that you first use a larger
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instance type when performing these changes to the AMI, and then run the AMI on a t1.micro instance
for normal operations.
Amazon EBS–Optimized Instances
An Amazon EBS–optimized instance uses an optimized configuration stack and provides additional,
dedicated capacity for Amazon Elastic Block Store (EBS) I/O.This optimization provides the best performance for your Amazon EBS volumes by minimizing contention between Amazon EBS I/O and other traffic
from your instance.
When you use an Amazon EBS–optimized instance, you pay an additional low, hourly fee for the dedicated
capacity. For more detailed pricing information, see EBS-optimized Instances on the Amazon EC2 Pricing
detail page.
Amazon EBS–optimized instances deliver dedicated throughput to Amazon EBS, with options between
500 Mbps and 2,000 Mbps, depending on the instance type you use. When attached to an Amazon
EBS–optimized instance, General Purpose (SSD) volumes are designed to deliver within 10 percent of
their of the baseline and burst performance 99.9 percent of the time in a given year, and Provisioned
IOPS (SSD) volumes are designed to deliver within 10 percent of their provisioned performance 99.9
percent of the time in a given year. For more information, see Amazon EBS Volume Types (p. 359).
The following table shows which instance types are available to be launched as EBS-optimized, the
dedicated throughput to Amazon EBS, the maximum amount of IOPS the instance can support if you are
using a 16 KB I/O size, and the approximate maximum bandwidth available on that connection in MB/s.
Be sure to choose an EBS-optimized instance that provides more dedicated EBS throughput than your
application needs; otherwise, the EBS to EC2 connection will become a performance bottleneck.
Instance
Type
Max 16K IOPS**
Max
Bandwidth
(MB/s)**
c1.xlarge 1,000
8,000
125
c3.xlarge 500
4,000
62.5
c3.2xlarge 1,000
8,000
125
c3.4xlarge 2,000
16,000
250
g2.2xlarge 1,000
8,000
125
i2.xlarge 500
4,000
62.5
i2.2xlarge 1,000
8,000
125
i2.4xlarge 2,000
16,000
250
4,000
62.5
m1.xlarge 1,000
8,000
125
m2.2xlarge 500
4,000
62.5
m2.4xlarge 1,000
8,000
125
m3.xlarge 500
4,000
62.5
m3.2xlarge 1,000
8,000
125
r3.xlarge 500
4,000
62.5
m1.large
Dedicated EBS Throughput
(Mbps)*
500
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Instance
Type
Dedicated EBS Throughput
(Mbps)*
Max 16K IOPS**
Max
Bandwidth
(MB/s)**
r3.2xlarge 1,000
8,000
125
r3.4xlarge 2,000
16,000
250
To launch an Amazon EBS–optimized instance, select the Launch as EBS-optimized instance option
in the launch wizard. If the instance type that you've selected can't be launched as an Amazon EBS–optimized instance, this option is not available.
To launch an Amazon EBS–optimized instance using the AWS CLI, use the run-instances command with
the --ebs-optimized option.
To launch an Amazon EBS–optimized instance using Amazon EC2 CLI, use the ec2-run-instances
command with the --ebs-optimized option.
Placement Groups
A placement group is a logical grouping of instances within a single Availability Zone. Using placement
groups enables applications to participate in a low-latency, 10 Gbps network. Placement groups are recommended for applications that benefit from low network latency, high network throughput, or both. To
provide the lowest latency, and the highest packet-per-second network performance for your placement
group, choose an instance type that supports enhanced networking. For more information, see Enhanced
Networking (p. 350).
First, you create a placement group and then you launch multiple instances into the placement group.
We recommend that you launch the number of instances that you need in the placement group in a single
launch request and that you use the same instance type for all instances in the placement group. If you
try to add more instances to the placement group later, or if you try to launch more than one instance
type in the placement group, you increase your chances of getting an insufficient capacity error.
If you stop an instance in a placement group and then start it again, it still runs in the placement group.
However, the start fails if there isn't enough capacity for the instance.
If you receive a capacity error when launching an instance in a placement group, stop and restart the instances in the placement group, and then try the launch again.
Topics
• Placement Group Limitations (p. 95)
• Launching Instances into a Placement Group (p. 96)
• Deleting a Placement Group (p. 97)
Placement Group Limitations
Placement groups have the following limitations:
• A placement group can't span multiple Availability Zones.
• The name you specify for a placement group a name must be unique within your AWS account.
• The following are the only instance types that you can use when you launch an instance into a placement
group:
• Compute optimized: c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | c3.8xlarge |
cc2.8xlarge
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• GPU: cg1.4xlarge | g2.2xlarge
• Memory optimized: cr1.8xlarge | r3.large | r3.xlarge | r3.2xlarge | r3.4xlarge |
r3.8xlarge
• Storage optimized: hi1.4xlarge | hs1.8xlarge | i2.xlarge | i2.2xlarge | i2.4xlarge |
i2.8xlarge
• Although launching multiple instance types into a placement group is possible, this reduces the likelihood
that the required capacity will be available for your launch to succeed. We recommend using the same
instance type for all instances in a placement group.
• You can't merge placement groups. Instead, you must terminate the instances in one placement group,
and then relaunch those instances into the other placement group.
• A placement group can span peered VPCs; however, you will not get full-bisection bandwidth between
instances in peered VPCs. For more information about VPC peering connections, see VPC Peering in
the Amazon VPC User Guide.
• You can't move an existing instance into a placement group. You can create an AMI from your existing
instance, and then launch a new instance from the AMI into a placement group.
Launching Instances into a Placement Group
We suggest that you create an AMI specifically for the instances that you'll launch into a placement group.
To launch an instance into a placement group using the console
1.
2.
Open the Amazon EC2 console.
Create an AMI for your instances.
a.
b.
c.
d.
e.
f.
3.
From the Amazon EC2 dashboard, click Launch Instance. After you complete the wizard, click
Launch.
Connect to your instance. (For more information, see Connecting to Your Windows Instance
Using RDP (p. 139).)
Install software and applications on the instance, copy data, or attach additional Amazon EBS
volumes.
(Optional) If your instance type supports enhanced networking, ensure that this feature is enabled
by following the procedures in Enabling Enhanced Networking on Windows Instances in a
VPC (p. 350).
In the navigation pane, click Instances, select your instance, click Actions, and then click
Create Image. Provide the information requested by the Create Image dialog box, and then
click Create Image.
(Optional) You can terminate this instance if you have no further use for it.
Create a placement group.
a.
b.
In the navigation pane, click Placement Groups.
Click Create Placement Group.
c.
In the Create Placement Group dialog box, provide a name for the placement group that is
unique in the AWS account you're using, and then click Create.
When the status of the placement group is available, you can launch instances into the
placement group.
4.
Launch your instances into the placement group.
a.
In the navigation pane, click Instances.
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b.
Click Launch Instance. Complete the wizard as directed, taking care to select the following:
• The AMI that you created
• The number of instances that you'll need
• The placement group that you created
To create a placement group using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-placement-group (AWS CLI)
• ec2-create-placement-group (Amazon EC2 CLI)
• New-EC2PlacementGroup (AWS Tools for Windows PowerShell)
If you prefer, you can use the ec2-create-image command to create your AMI, the ec2-create-placementgroup command to create your placement group, and use the ec2-run-instances command to launch an
instance into the placement group.
Deleting a Placement Group
You can delete a placement group if you need to replace it or no longer need a placement group. Before
you can delete your placement group, you must terminate all instances that you launched into the
placement group.
To delete a placement group using the console
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
Select and terminate all instances in the placement group. (You can verify that the instance is in a
placement group before you terminate it by checking the value of Placement Group in the details
pane.)
In the navigation pane, click Placement Groups.
Select the placement group, and then click Delete Placement Group.
6.
When prompted for confirmation, click Yes, Delete.
To delete a placement group using the command line
You can use one of the following sets of commands. For more information about these command line
interfaces, see Accessing Amazon EC2 (p. 3).
• terminate-instances and delete-placement-group (AWS CLI)
• ec2-terminate-instances and ec2-delete-placement-group (Amazon EC2 CLI)
• Stop-EC2Instance and Remove-EC2PlacementGroup(AWS Tools for Windows PowerShell)
Resizing Your Instance
As your needs change, you might find that your instance is over-utilized (the instance type is too small)
or under-utilized (the instance type is too large). If this is the case, you can change the size of your instance.
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For example, if your t1.micro instance is too small for its workload, you can change it to an m1.small
instance.
The process for resizing an instance varies depends on the type of its root device volume, as follows:
• If the root device for your instance is an Amazon EBS volume, you can easily resize your instance by
changing its instance type.
• If the root device for your instance is an instance store volume, you must migrate to a new instance.
To determine the root device type of your instance, open the Amazon EC2 console, click Instances, select
the instance, and check the value of Root device type in the details pane. The value is either ebs or
instance store.
For more information about root device volumes, see Storage for the Root Device (p. 49).
Topics
• Limitations for Resizing Instances (p. 98)
• Resizing an Amazon EBS–backed Instance (p. 98)
• Resizing an Instance Store-backed Instance (p. 99)
Limitations for Resizing Instances
T2 instances must be launched into a VPC using HVM AMIs; they are not supported on the EC2-Classic
platform and they do not support PV AMIs. If your account supports EC2-Classic and you have not created
any VPCs, you cannot change your instance type to T2 in the console. If your instance uses HVM virtualization and it was launched into a VPC, then you can resize that instance to a T2 instance. For more information, see T2 Instances (p. 77).
All Amazon EC2 instance types support 64-bit AMIs, but only the following instance types support 32-bit
AMIs: t1.micro, t2.micro, t2.small, t1.micro, m1.small, m1.medium, and c1.medium. If you
are resizing a 32-bit instance, you are limited to these instance types.
You cannot add instance store volumes when you resize your instance; instance store volumes may only
be added at launch time. If you want to add instance store volumes, consider creating an AMI from your
instance and launching a new instance from that AMI with instance store volumes. For more information,
see Amazon EC2 Instance Store (p. 407).
Resizing an Amazon EBS–backed Instance
You must stop your Amazon EBS–backed instance before you can change its instance type. When you
stop and start an instance, we move it to new hardware. If the instance is running in EC2-Classic, we
give it new public and private IP addresses, and disassociate any Elastic IP address that's associated
with the instance. Therefore, to ensure that your users can continue to use the applications that you're
hosting on your instance uninterrupted, you must re-associate any Elastic IP address after you restart
your instance. For more information, see Stop and Start Your Instance (p. 141).
Use the following procedure to resize an Amazon EBS–backed instance using the AWS Management
Console.
To resize an Amazon EBS–backed instance
1.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Instances, and select the instance.
[EC2-Classic] If the instance has an associated Elastic IP address, write down the Elastic IP address
and the instance ID shown in the details pane.
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4.
5.
Click Actions, and then click Stop.
In the confirmation dialog box, click Yes, Stop. It can take a few minutes for the instance to stop.
[EC2-Classic] When the instance state becomes stopped, the Elastic IP, Public DNS, Private
DNS, and Private IPs fields in the details pane are blank to indicate that the old values are no longer
associated with the instance.
6.
With the instance still selected, click Actions, and then click Change Instance Type. Note that this
action is disabled if the instance state is not stopped.
7.
In the Change Instance Type dialog box, in the Instance Type list, select the type of instance that
you need, and then click Apply.
To restart the stopped instance, select the instance, click Actions, and then click Start.
8.
9.
In the confirmation dialog box, click Yes, Start. It can take a few minutes for the instance to enter
the running state.
[EC2-Classic] When the instance state is running, the Public DNS, Private DNS, and Private IPs
fields in the details pane contain the new values that we assigned to the instance.
10. [EC2-Classic] If your instance had an associated Elastic IP address, you must reassociate it as follows:
a.
b.
c.
d.
In the navigation pane, click Elastic IPs.
Select the Elastic IP address that you wrote down before you stopped the instance.
Click Associate Address.
Select the instance ID that you wrote down before you stopped the instance, and then click
Associate.
Resizing an Instance Store-backed Instance
You can create an image from your current instance, launch a new instance from this image with the instance type you need, and then terminate the original instance that you no longer need. To ensure that
your users can continue to use the applications that you're hosting on your instance uninterrupted, you
must take any Elastic IP address that you've associated with your current instance and associate it with
the new instance.
To resize an instance store-backed instance
1.
(Optional) If the instance you are resizing has an associated Elastic IP address, record the Elastic
IP address now so that you can associate it with the resized instance later.
2.
Create an AMI from your instance store-backed instance by satisfying the prerequisites and following
the procedures in Creating an Instance Store-Backed Windows AMI (p. 64). When you are finished
creating a new AMI from your instance, return to this procedure.
Open the Amazon EC2 console and in the navigation pane, select AMIs. From the filter lists, select
Owned by me, and select the image you created in the previous step. Notice that AMI Name is the
name that you specified when you registered the image and Source is your Amazon S3 bucket.
3.
Note
If you do not see the AMI that you created in the previous step, make sure that the console
displays the region that you created your AMI in.
4.
Click Launch. When you specify options in the launch wizard, be sure to specify the new instance
type that you need. It can take a few minutes for the instance to enter the running state.
5.
(Optional) If the instance that you started with had an associated Elastic IP address, you must associate it with the new instance as follows:
a.
In the navigation pane, click Elastic IPs.
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6.
b.
c.
Select the Elastic IP address that you recorded at the beginning of this procedure.
Click Associate Address.
d.
Select the instance ID of the new instance, and then click Associate.
(Optional) You can terminate the instance that you started with, if it's no longer needed. Select the
instance and check its instance ID against the instance ID that you wrote down at the beginning of
this procedure to verify that you are terminating the correct instance. Click Actions, and then click
Terminate.
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Instance Metadata and User Data
Instance Metadata and User Data
Instance metadata is data about your instance that you can use to configure or manage the running instance. Instance metadata is divided into categories. For more information, see Instance Metadata Categories (p. 104).
EC2 instances can also include dynamic data, such as an instance identity document that is generated
when the instance is launched. For more information, see Dynamic Data Categories (p. 108).
You can also access the user data that you supplied when launching your instance. For example, you
can specify parameters for configuring your instance, or attach a simple script.You can also use this data
to build more generic AMIs that can be modified by configuration files supplied at launch time. For example,
if you run web servers for various small businesses, they can all use the same AMI and retrieve their
content from the Amazon S3 bucket you specify in the user data at launch. To add a new customer at
any time, simply create a bucket for the customer, add their content, and launch your AMI. If you launch
more than one instance at the same time, the user data is available to all instances in that reservation.
Because you can access instance metadata and user data from within your running instance, you do not
need to use the Amazon EC2 console or the CLI tools. This can be helpful when you're writing scripts to
run from within your instance. For example, you can access your instance's local IP address from within
the running instance to manage a connection to an external application.
Important
Although you can only access instance metadata and user data from within the instance itself,
the data is not protected by cryptographic methods. Anyone who can access the instance can
view its metadata.Therefore, you should take suitable precautions to protect sensitive data (such
as long-lived encryption keys). You should not store sensitive data, such as passwords, as user
data.
For more information about adding user data when you launch an instance, see Launching an Instance (p. 131).You can add or modify user data on Amazon EBS-backed instances when they're stopped.
For more information about adding user data to a stopped instance, see Modifying a Stopped Instance (p. 143).
When you are adding user data, take note of the following:
• User data is treated as opaque data: what you give is what you get back. It is up to the instance to be
able to interpret it.
• User data is limited to 16 KB. This limit applies to the data in raw form, not base64-encoded form.
• User data must be base64-encoded before being submitted to the API. The API command line tools
perform the base64 encoding for you. The data is decoded before being presented to the instance. For
more information about base64 encodings, go to http://tools.ietf.org/html/rfc4648.
Topics
• Retrieving Instance Metadata (p. 101)
• Retrieving User Data (p. 103)
• Retrieving Dynamic Data (p. 104)
• Instance Metadata Categories (p. 104)
Retrieving Instance Metadata
To view all categories of instance metadata from within a running instance, use the following URI:
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http://169.254.169.254/latest/meta-data/
Note that you are not billed for HTTP requests used to retrieve instance metadata and user data.
You can install a tool such as GNU Wget or cURL to retrieve instance metadata at the command line, or
you can copy and paste the URI into a browser. If you do not want to install any third-party tools, you can
use PowerShell cmdlets to retrieve the URI. For example, if you are running version 3.0 or later of
PowerShell, use the following cmdlet:
PS C:\> invoke-restmethod -uri http://169.254.169.254/latest/meta-data/
Important
If you do install a third-party tool on a Windows instance, ensure that you read the accompanying
documentation carefully, as the method of calling the HTTP and the output format might be different from what is documented here.
All metadata is returned as text (content type text/plain). A request for a specific metadata resource returns
the appropriate value, or a 404 - Not Found HTTP error code if the resource is not available.
A request for a general metadata resource (the URI ends with a /) returns a list of available resources,
or a 404 - Not Found HTTP error code if there is no such resource. The list items are on separate
lines, terminated by line feeds (ASCII 10).
Examples of Retrieving Instance Metadata
This example gets the available versions of the instance metadata. These versions do not necessarily
correlate with an Amazon EC2 API version. The earlier versions are available to you in case you have
scripts that rely on the structure and information present in a previous version.
C:\> curl http://169.254.169.254/
1.0
2007-01-19
2007-03-01
2007-08-29
2007-10-10
2007-12-15
2008-02-01
2008-09-01
2009-04-04
2011-01-01
2011-05-01
2012-01-12
2014-02-25
latest
This example gets the top-level metadata items. Some items are only available for instances in a VPC.
For more information about each of these items, see Instance Metadata Categories (p. 104).
C:\> curl http://169.254.169.254/latest/meta-data/
ami-id
ami-launch-index
ami-manifest-path
block-device-mapping/
hostname
instance-action
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instance-id
instance-type
kernel-id
local-hostname
local-ipv4
mac
network/
placement/
public-hostname
public-ipv4
public-keys/
reservation-id
security-groups
services/
These examples get the value of some of the metadata items from the preceding example.
C:\> curl http://169.254.169.254/latest/meta-data/ami-id
ami-2bb65342
C:\> curl http://169.254.169.254/latest/meta-data/reservation-id
r-fea54097
C:\> curl http://169.254.169.254/latest/meta-data/hostname
ec2-203-0-113-25.compute-1.amazonaws.com
This example shows the information available for a specific network interface (indicated by the MAC address) on an NAT instance in the EC2-Classic platform.
C:\> curl http://169.254.169.254/latest/meta-data/network/inter
faces/macs/02:29:96:8f:6a:2d/
device-number
local-hostname
local-ipv4s
mac
owner-id
public-hostname
public-ipv4s
This example gets the subnet ID for an instance launched into a VPC.
C:\> curl http://169.254.169.254/latest/meta-data/network/inter
faces/macs/02:29:96:8f:6a:2d/subnet-id
subnet-be9b61d7
Retrieving User Data
To retrieve user data, use the following URI:
http://169.254.169.254/latest/user-data
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Requests for user data returns the data as it is (content type application/x-octetstream).
This shows an example of returning comma-separated user data.
C:\> curl http://169.254.169.254/latest/user-data
1234,john,reboot,true | 4512,richard, | 173,,,
This shows an example of returning line-separated user data.
C:\> curl http://169.254.169.254/latest/user-data
[general]
instances: 4
[instance-0]
s3-bucket: <user_name>
[instance-1]
reboot-on-error: yes
Retrieving Dynamic Data
To retrieve dynamic data from within a running instance, use the following URI:
http://169.254.169.254/latest/dynamic/
This example shows how to retrieve the high-level instance identity categories:
C:\> curl http://169.254.169.254//latest/dynamic/instance-identity/
pkcs7
signature
document
Instance Metadata Categories
The following table lists the categories of instance metadata.
Data
Description
Version Introduced
ami-id
The AMI ID used to launch the
instance.
1.0
ami-launch-index
If you started more than one instance 1.0
at the same time, this value indicates
the order in which the instance was
launched.The value of the first instance
launched is 0.
ami-manifest-path
The path to the AMI's manifest file in
Amazon S3. If you used an Amazon
EBS-backed AMI to launch the
instance, the returned result is
unknown.
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Instance Metadata Categories
Data
Description
ancestor-ami-ids
The AMI IDs of any instances that were 2007-10-10
rebundled to create this AMI. This value
will only exist if the AMI manifest file
contained an ancestor-amis key.
block-device-mapping/ami
The virtual device that contains the
root/boot file system.
block-device-mapping/ebs
N
The virtual devices associated with
2007-12-15
Amazon EBS volumes, if any are
present. This value is only available in
metadata if it is present at launch time.
The N indicates the index of the
Amazon EBS volume (such as ebs1 or
ebs2).
block-device-mapping/eph
emeral
N
The virtual devices associated with
2007-12-15
ephemeral devices, if any are present.
The N indicates the index of the
ephemeral volume.
block-device-mapping/root
The virtual devices or partitions
associated with the root devices, or
partitions on the virtual device, where
the root (/ or C:) file system is
associated with the given instance.
2007-12-15
block-device-mapping/swap
The virtual devices associated with
swap. Not always present.
2007-12-15
hostname
The private hostname of the instance. 1.0
In cases where multiple network
interfaces are present, this refers to the
eth0 device (the device for which the
device number is 0).
iam/info
Returns information about the last time 2012-01-12
the instance profile was updated,
including the instance's LastUpdated
date, InstanceProfileArn, and
InstanceProfileId.
iam/security-credentials
/role-name
Where role-name is the name of the
IAM role associated with the instance.
Returns the temporary security
credentials (AccessKeyId,
SecretAccessKey, SessionToken, and
Expiration) associated with the IAM
role.
instance-action
Notifies the instance that it should
2008-09-01
reboot in preparation for bundling. Valid
values: none | shutdown |
bundle-pending.
instance-id
The ID of this instance.
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Data
Description
instance-type
The type of instance. For more
2007-08-29
information, see Instance Types (p. 75).
kernel-id
The ID of the kernel launched with this 2008-02-01
instance, if applicable.
local-hostname
The private DNS hostname of the
2007-01-19
instance. In cases where multiple
network interfaces are present, this
refers to the eth0 device (the device for
which the device number is 0).
local-ipv4
The private IP address of the instance. 1.0
In cases where multiple network
interfaces are present, this refers to the
eth0 device (the device for which the
device number is 0).
mac
The instance's media access control
2011-01-01
(MAC) address. In cases where multiple
network interfaces are present, this
refers to the eth0 device (the device for
which the device number is 0).
network/interfaces/macs/
mac/device-number
The device number associated with that 2011-01-01
interface. Each interface must have a
unique device number. The device
number serves as a hint to device
naming in the instance; for example,
device-number is 2 for the eth2
device.
network/interfaces/macs/
mac/ipv4-associations/pu
blic-ip
The private IPv4 addresses that are
2011-01-01
associated with each public-ip
address and assigned to that interface.
network/interfaces/macs/
mac/local-hostname
The interface's local hostname.
2011-01-01
network/interfaces/macs/
mac/local-ipv4s
The private IP addresses associated
with the interface.
2011-01-01
network/interfaces/macs/
mac/mac
The instance's MAC address.
2011-01-01
network/interfaces/macs/
mac/owner-id
The ID of the owner of the network
2011-01-01
interface. In multiple-interface
environments, an interface can be
attached by a third party, such as
Elastic Load Balancing. Traffic on an
interface is always billed to the interface
owner.
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Instance Metadata Categories
Data
Description
Version Introduced
network/interfaces/macs/
mac/public-hostname
The interface's public DNS. If the
2011-01-01
instance is in a VPC, this category is
only returned if the
enableDnsHostnames attribute is set
to true. For more information, see
Using DNS with Your VPC.
network/interfaces/macs/
mac/public-ipv4s
The Elastic IP addresses associated
with the interface. There may be
multiple IP addresses on an instance.
2011-01-01
network/interfaces/macs/
mac/security-groups
Security groups to which the network
interface belongs. Returned only for
instances launched into a VPC.
2011-01-01
network/interfaces/macs/
mac/security-group-ids
IDs of the security groups to which the 2011-01-01
network interface belongs. Returned
only for instances launched into a VPC.
For more information on security groups
in the EC2-VPC platform, see Security
Groups for Your VPC.
network/interfaces/macs/
mac/subnet-id
The ID of the subnet in which the
interface resides. Returned only for
instances launched into a VPC.
2011-01-01
network/interfaces/macs/
The CIDR block of the subnet in which 2011-01-01
mac/subnet-ipv4-cidr-block the interface resides. Returned only for
instances launched into a VPC.
network/interfaces/macs/
mac/vpc-id
The ID of the VPC in which the
interface resides. Returned only for
instances launched into a VPC.
network/interfaces/macs/
mac/vpc-ipv4-cidr-block
The CIDR block of the VPC in which
2011-01-01
the interface resides. Returned only for
instances launched into a VPC.
placement/availability-z
one
The Availability Zone in which the
instance launched.
2008-02-01
product-codes
Product codes associated with the
instance, if any.
2007-03-01
public-hostname
The instance's public DNS. If the
2007-01-19
instance is in a VPC, this category is
only returned if the
enableDnsHostnames attribute is set
to true. For more information, see
Using DNS with Your VPC.
public-ipv4
The public IP address. If an Elastic IP 2007-01-19
address is associated with the instance,
the value returned is the Elastic IP
address.
public-keys/0/openssh-key
Public key. Only available if supplied at 1.0
instance launch time.
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Data
Description
Version Introduced
ramdisk-id
The ID of the RAM disk specified at
launch time, if applicable.
2007-10-10
reservation-id
ID of the reservation.
1.0
security-groups
The names of the security groups
applied to the instance.
1.0
Note
Only instances launched into
a VPC can change security
groups after launch. These
changes will be reflected here
and in
network/interfaces/macs/mac/security-groups.
services/domain
The domain for AWS resources for the 2014-02-25
region; for example, amazonaws.com
for us-east-1.
Dynamic Data Categories
The following table lists the categories of dynamic data.
Data
Description
Version
introduced
fws/instance-monitoring Value showing whether the customer has enabled detailed 2009-04-04
one-minute monitoring in CloudWatch. Valid values:
enabled | disabled
instance-identity/docume JSON containing instance attributes, such as instance-id,
nt
private IP address, etc.
2009-04-04
instance-identity/pkcs7 Used to verify the document's authenticity and content
against the signature.
2009-04-04
instance-identity/signat Data that can be used by other parties to verify its origin
ure
and authenticity.
2009-04-04
Importing and Exporting Instances
You can use the Amazon Web Services (AWS) VM Import/Export tools to import virtual machine (VM)
images from your local environment into AWS and convert them into ready-to-use Amazon EC2 instances.
Later, you can export the VM images back to your local environment. VM Import/Export allows you to
leverage your existing investments in the virtual machines that you have built to meet your IT security,
configuration management, and compliance requirements by bringing those VMs into Amazon Elastic
Compute Cloud (Amazon EC2) as ready-to-use instances. VM Import/Export is compatible with Citrix
Xen, Microsoft Hyper-V, or VMware vSphere virtualization environments. If you're using VMware vSphere,
you can also use the AWS Connector for vCenter to export a VM from VMware and import it into Amazon
EC2. For more information, see Migrating Your Virtual Machine to Amazon EC2 Using AWS Connector
for vCenter in the AWS Management Portal for vCenter User Guide.
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Prerequisites
VM Import/Export can be used to migrate applications and workloads, copy your VM image catalog, or
create a disaster recovery repository for VM images.
• Migrate existing applications and workloads to Amazon EC2—You can migrate your VM-based
applications and workloads to Amazon EC2 and preserve their software and configuration settings.
After you import your applications and workloads into an Amazon EC2 instance, you can create Amazon
Machine Images (AMIs) and run multiple copies of the same image. You can also create snapshots
and use them to back up your data.You can use AMI and snapshot copies to replicate your applications
and workloads around the world. For more information about AMI copy, see Copying an AMI (p. 68).
• Copy your VM image catalog to Amazon EC2—You can copy your existing VM image catalog into
Amazon EC2. If you maintain a catalog of approved VM images, you can copy your image catalog to
Amazon EC2 and create Amazon EC2 instances from the imported VM images.Your existing software,
including products that you have installed such as anti-virus software, intrusion detection systems, and
so on, can be imported along with your VM images. You can use the resulting Amazon EC2 instances
to create Amazon EC2 AMIs. You can use the AMIs as your image catalog within Amazon EC2.
• Create a disaster recovery repository for VM images—You can import your local VM images into
Amazon EC2 for backup and disaster recovery purposes.You can store the imported images as Amazon
Elastic Block Store (Amazon EBS)-backed AMIs so they're ready to launch in Amazon EC2 when you
need them. If your local environment suffers an event, you can quickly launch your instances to preserve
business continuity while simultaneously exporting them to rebuild your local infrastructure.
The following diagram shows the process of exporting a VM from your on-premises virtualization environment to AWS.
Contents
• VM Import/Export Prerequisites (p. 109)
• Importing a VM into Amazon EC2 (p. 112)
• Exporting Amazon EC2 Instances (p. 121)
• Troubleshooting VM Import/Export (p. 122)
VM Import/Export Prerequisites
Before you begin the process of exporting an instance from your virtualization environment or importing
and exporting a VM from Amazon EC2, you must be aware of the operating systems and image formats
that AWS supports, and understand the limitations on exporting instances and volumes.
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If you plan to use the command line tools to export your instance, you must also download and install
them. For more information, see Setting Up the Amazon EC2 Tools.
Contents
• Operating Systems (p. 110)
• Image Formats (p. 110)
• Instance Types (p. 111)
• Requirements and Limitations (p. 111)
Operating Systems
The following operating systems can be imported into and exported from Amazon EC2.
Windows (32- and 64-bit)
•
•
•
•
•
•
Microsoft Windows Server 2012 R2 (Standard)
Microsoft Windows Server 2012 (Standard, Datacenter)
Microsoft Windows Server 2008 R2 (Standard, Datacenter, Enterprise)
Microsoft Windows Server 2008 (Standard, Datacenter, Enterprise)
Microsoft Windows Server 2003 R2 (Standard, Datacenter, Enterprise)
Microsoft Windows Server 2003 (Standard, Datacenter, Enterprise) with Service Pack 1 (SP1) or later
Linux/Unix (64-bit)
• Red Hat Enterprise Linux (RHEL) 5.1-5.10, 6.1-6.5
Note
RHEL 6.0 is unsupported because it lacks the drivers required to run on Amazon EC2.
VM Import supports license portability for RHEL instances. Your existing RHEL licenses are
imported along with their associated RHEL instance. For more information about eligibility for
Red Hat Cloud Access, see Eligibility at the Red Hat website.
• CentOS 5.1-5.10, 6.1-6.5
Note
CentOS 6.0 is unsupported because it lacks the drivers required to run on Amazon EC2.
• Ubuntu 12.04, 12.10, 13.04, 13.10
• Debian 6.0.0-6.0.8, 7.0.0-7.2.0
Image Formats
The following formats can be imported into and exported from Amazon EC2.
Importing Image Formats into Amazon EC2
AWS supports the following image formats for importing both volumes and instances into Amazon EC2:
• RAW format for importing volumes and instances.
• Virtual Hard Disk (VHD) image formats, which are compatible with Microsoft Hyper-V and Citrix Xen
virtualization products.
• ESX Virtual Machine Disk (VMDK) image formats, which are compatible with VMware ESX and VMware
vSphere virtualization products.
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Note
You can only import VMDK files into Amazon EC2 that were created through the OVF export
process in VMware.
Exporting Image Formats from Amazon EC2
AWS supports the following image formats for exporting both volumes and instances from Amazon EC2:
• Open Virtual Appliance (OVA) image format, which is compatible with VMware vSphere versions 4 and
5.
• Virtual Hard Disk (VHD) image format, which is compatible with Citrix Xen and Microsoft Hyper-V virtualization products.
• Stream-optimized ESX Virtual Machine Disk (VMDK) image format, which is compatible with VMware
ESX and VMware vSphere versions 4 and 5 virtualization products.
Instance Types
AWS supports importing Windows instances into any instance type. Linux instances can be imported into
the following instance types:
• General purpose: t2.micro | t2.small | t2.medium | m3.medium | m3.large | m3.xlarge |
m3.2xlarge
• Compute optimized: c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | cc2.8xlarge
• Memory optimized: cr1.8xlarge
• Storage optimized: hi1.4xlarge | hs1.8xlarge | i2.xlarge | i2.2xlarge | i2.4xlarge
• GPU: cg1.4xlarge
Requirements and Limitations
Known Limitations for Importing a VM into Amazon EC2
Importing instances and volumes is subject to the following limitations:
• You can have up to five import tasks in progress at the same time per region.
• Imported instances create EC2 instances that use Hardware Virtual Machine (HVM) virtualization.
Creating instances that use Paravirtual (PV) virtualization using VM Import is not supported. Linux
PVHVM drivers are supported within imported instances.
• Imported Red Hat Enterprise Linux (RHEL) instances must use Cloud Access (BYOL) licenses.
• Imported Linux instances must use 64-bit images. Importing 32-bit Linux images is not supported.
• Imported Linux instances should use default kernels for best results. VMs that use custom Linux kernels
might not import successfully.
• Typically, you import a compressed version of a disk image; the expanded image cannot exceed 1 TiB.
• Make sure your VM only uses a single disk. Importing a VM with more than one disk is not supported.
For Linux VMs, /boot and / can be located in different partitions, but they need to be on the same disk.
We suggest that you import the VM with only the boot volume, and import any additional disks using
the ec2-import-volume command. After the ImportInstance task is complete, use the ec2-attachvolume command to associate the additional volumes with your instance.
• Make sure that you have at least 250 MB of available disk space for installing drivers and other software
on any VM you want to import into an Amazon EC2 instance running Microsoft Windows.
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• Imported instances automatically have access to the Amazon EC2 instance store, which is temporary
disk storage from disks that are physically attached to the host computer.You cannot disable this during
import. For more information about instance storage, see Amazon EC2 Instance Store (p. 407).
• Tasks must complete within 7 days of the start date.
• Multiple network interfaces are not currently supported. When converted and imported, your instance
will have a single virtual NIC using DHCP for address assignment.
• Internet Protocol version 6 (IPv6) IP addresses are not supported.
• For vCenter 4.0 and vSphere 4.0 users, remove any attached CD-ROM images or ISOs from the virtual
machine.
• Amazon VM Import does not install the single root I/O virtualization (SR-IOV) drivers on the c3 and i2
instance types, except for imports of Microsoft Windows Server 2012 R2 VMs. These drivers are not
required unless you plan to use enhanced networking, which provides higher performance (packets
per second), lower latency, and lower jitter. To enable enhanced networking on a c3 or i2 instance type
after you import your VM, see Enabling Enhanced Networking on Windows Instances in a VPC (p. 350).
For Microsoft Windows Server 2012 R2 VMs, SR-IOV driver are automatically installed as a part of the
import process.
Known Limitations for Exporting a VM from Amazon EC2
Exporting instances and volumes is subject to the following limitations:
•
•
•
•
You cannot export Amazon Elastic Block Store (Amazon EBS) data volumes.
You cannot export an instance that has more than one virtual disk.
You cannot export an instance that has more than one network interface.
You cannot export an instance from Amazon EC2 unless you previously imported it into Amazon EC2
from another virtualization environment.
Importing a VM into Amazon EC2
There are two ways you can launch an instance in Amazon EC2. You can launch an instance from an
Amazon Machine Image (AMI), or, you can launch an instance from a virtual machine (VM) that you imported from a virtualization environment such as Citrix Xen, Microsoft Hyper-V, or VMware vSphere. This
section covers importing a VM and launching it as an Amazon EC2 instance. For more information about
how to launch an Amazon EC2 instance from an AMI, see Launch Your Instance (p. 130).
To use your VM as an instance in Amazon EC2, you must first export it from the virtualization environment,
and then import it to Amazon EC2 using the Amazon EC2 command line interface (CLI) or API tools. If
you're importing a VM from VMware vCenter, you can also use the AWS Connector for vCenter to export
a VM from VMware and import it into Amazon EC2. For more information, see Migrating Your Virtual
Machine to Amazon EC2 Using AWS Connector for vCenter in the AWS Management Portal for vCenter
User Guide.
Whether you use the CLI or the API, you will follow the same steps for importing VMs or volumes into
Amazon EC2. This is the process for using the CLI.
To import a VM into Amazon EC2
1.
2.
3.
4.
Install the CLI. For more information, see Step 1: Install the Amazon EC2 CLI (p. 113).
Prepare the VM for import to Amazon EC2. For more information, see Step 2: Prepare Your VM (p. 113).
Export the VM from the virtualization environment. For more information, see Step 3: Export Your
VM from Its Virtual Environment (p. 114).
Import the VM into Amazon EC2. For information, see Step 4: Importing Your VM into Amazon
EC2 (p. 114).
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5.
Launch the instance in Amazon EC2. For more information, see Step 5: Launch the instance in
Amazon EC2 (p. 120).
Step 1: Install the Amazon EC2 CLI
You need to install the Amazon EC2 CLI to import your Citrix, Microsoft Hyper-V, or VMware vSphere
virtual machines into Amazon EC2 or to export them from Amazon EC2. If you haven't already installed
the Amazon EC2 CLI, see Setting Up the Amazon EC2 Tools.
You'll use the following Amazon EC2 commands to import or export a VM.
Command
Description
ec2-import-instance
Creates a new import instance task using metadata
from the specified disk image and imports the
instance to Amazon EC2.
ec2-import-volume
Creates a new import volume task using metadata
from the specified disk image and imports the
volume to Amazon EC2.
ec2-resume-import
Resumes the upload of a disk image associated
with an import instance or import volume task ID.
ec2-describe-conversion-tasks
Lists and describes your import tasks.
ec2-cancel-conversion-task
Cancels an active import task. The task can be the
import of an instance or volume.
ec2-delete-disk-image
Deletes a partially or fully uploaded disk image for
import from an Amazon S3 bucket.
ec2-create-image-export-task
Exports a running or stopped instance to an
Amazon S3 bucket.
ec2-cancel-export-task
Cancels an active export task.
ec2-describe-export-tasks
Lists and describes your export tasks, including the
most recent canceled and completed tasks.
For information about these commands and other Amazon EC2 commands, see the Amazon EC2 Command Line Reference.
Step 2: Prepare Your VM
Use the following guidelines to configure your VM before exporting it from the virtualization environment.
• Review the prerequisites. For more information, see VM Import/Export Prerequisites (p. 109).
• Disable any antivirus or intrusion detection software on your VM. These services can be re-enabled
after the import process is complete.
• Uninstall the VMware Tools from your VMware VM.
• Disconnect any CD-ROM drives (virtual or physical).
• Set your network to DHCP instead of a static IP address. If you want to assign a static private IP address,
be sure to use a non-reserved private IP address in your VPC subnet. Amazon Virtual Private Cloud
(Amazon VPC) reserves the first four private IP addresses in a VPC subnet.
• Shut down your VM before exporting it.
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Windows
• Enable Remote Desktop (RDP) for remote access.
• Make sure that your host firewall (Windows firewall or similar), if configured, allows access to RDP.
Otherwise, you will not be able to access your instance after the import is complete.
• Make sure that the administrator account and all other user accounts use secure passwords. All accounts
must have passwords or the importation might fail.
• Make sure that your Windows VM has .NET Framework 3.5 installed, as required by Amazon Windows
EC2Config Service.
• Do not run System Preparation (Sysprep) on your Windows VM images.We recommend that you import
the image and then use the Amazon EC2 Config service to run Sysprep.
• Disable Autologon on your Windows VM.
• Make sure that there are no pending Microsoft updates, and that the computer is not set to install
software when it reboots.
Linux
• Enable Secure Shell (SSH) for remote access.
• Make sure that your host firewall (such as Linux iptables) allows access to SSH. Otherwise, you will
not be able to access your instance after the import is complete.
• Make sure that you have configured a non-root user to use public key-based SSH to access your instance
after it is imported. The use of password-based SSH and root login over SSH are both possible, but
not recommended. The use of public keys and a non-root user is recommended because it is more
secure. VM Import will not configure an ec2-user account as part of the import process.
• Make sure that your Linux VM uses GRUB (GRUB legacy) or GRUB 2 as its bootloader.
• Make sure that your Linux VM uses a root filesystem is one of the following: EXT2, EXT3, EXT4, Btrfs,
JFS, or XFS.
Step 3: Export Your VM from Its Virtual Environment
After you have prepared your VM for export, you can export it from your virtualization environment. For
information about how to export a VM from your virtualization environment, see the documentation for
Citrix, Microsoft Hyper-V, or VMware vCenter virtualization environment.
Citrix: For more information, see Export VMs as OVF/OVA at the Citrix website.
Microsoft Hyper-V: For more information, see Hyper-V - Export & Import at the Microsoft website.
VMware: For more information, see Export an OVF Template at the VMware website.
Step 4: Importing Your VM into Amazon EC2
After exporting your VM from your virtualization environment, you can import it into Amazon EC2. The
import process is the same regardless of the origin of the VM.
Here are some important things to know about your VM instance, as well as some security and storage
recommendations:
• Amazon EC2 automatically assigns a DHCP IP address to your instance.The DNS name and IP address
are available through the ec2-describe-instances command when the instance starts running.
• Your instance has only one Ethernet network interface.
• To specify a subnet to use when you create the import task, use the --subnet subnet_id option
with the ec2-import-instance command; otherwise, your instance will use a public IP address. We
recommend that you use a restrictive security group to control access to your instance.
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• We recommend that your Windows instances contain strong passwords for all user accounts. We recommend that your Linux instances use public keys for SSH.
• For Windows instances, we recommend that you install the Amazon Windows EC2Config Service after
you import your virtual machine into Amazon EC2.
To import a VM into Amazon EC2
Use ec2-import-instance to create a new import instance task.
The syntax of the command is as follows:
ec2-import-instance disk_image_filename -f file_format -t instance_type -a ar
chitecture -b s3_bucket_name -o owner -w secret_key -p platform_name
If the import of the VM is interrupted, you can use the ec2-resume-import command to resume the
import from where it stopped. For more information, see Resuming an Upload (p. 119).
Example (Windows)
The following command creates an import instance task that imports a Windows Server 2008 SP2 (32bit) VM.
C:\> ec2-import-instance ./WinSvr8-2-32-disk1.vmdk –f VMDK -t m1.small -a i386
-b myawsbucket -o AKIAIOSFODNN7EXAMPLE -w wJalrXUtnFEMI/K7MDENG/bPxRfi
CYEXAMPLEKEY -p Windows
This request uses the VMDK file, WinSvr8-2-32-disk1.vmdk, to create the import task. (Note that
you can alternatively use VHD or RAW format.) If you do not specify a size for the requesting volume
using the -s parameter, a volume size based on the disk image file is used. The output is similar to the
following.
Requesting volume size: 25 GB
Disk image format: Stream-optimized VMDK
Converted volume size: 26843545600 bytes (25.00 GiB)
Requested EBS volume size: 26843545600 bytes (25.00 GiB)
TaskType
IMPORTINSTANCE TaskId import-i-fhbx6hua
ExpirationTime
2011-09-09T15:03:38+00:00
Status active StatusMessage
Pending In
stanceID
i-6ced060c
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
5070303744
VolumeSize
25
AvailabilityZone
us-east-1c
Approximate
BytesConverted
0
Status active StatusMessage
Pending
Creating new manifest at testImport/9cba4345-b73e-4469-81062756a9f5a077/Win_2008_R1_EE_64.vmdkmanifest.xml
Uploading the manifest file
Uploading 5070303744 bytes across 484 parts
0% |--------------------------------------------------| 100%
|==================================================|
Done
Example (Linux)
The following example creates an import instance task that imports a 64-bit Linux VM.
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$ ec2-import-instance rhel6.4-64bit-disk.vhd -f vhd -t m3.xlarge -a x86_64 -b
myawsbucket -o AKIAIOSFODNN7EXAMPLE –w wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
-p Linux
This request uses the VHD file, rhel6.4-64bit-disk.vhd, to create the import task. The output is similar
to the following.
Requesting volume size: 8 GB
TaskType
IMPORTINSTANCE TaskId import-i-ffnzq636
ExpirationTime
2013-12-12T22:55:18Z
Status
active StatusMessage
Pending InstanceID
i-a56ab6dd
DISKIMAGE
DiskImageFormat VHD
DiskImageSize
861055488
VolumeSize
8
AvailabilityZone
us-east-1d
ApproximateBytesCon
verted
0
Status active StatusMessage
Pending
Creating new manifest at myawsbucket/b73bae14-7ec5-4122-89584234028e1d9f/rhel6.4-64bit-disk.vhdmanifest.xml
Uploading the manifest file
Uploading 861055488 bytes across 83 parts
0% |--------------------------------------------------| 100%
|==================================================|
Done
Average speed was 11.054 MBps
The disk image for import-i-ffnzq636 has been uploaded to Amazon S3 where it
is being converted into
an EC2 instance. You may monitor the progress of this task by running ec2-de
scribe-conversion-tasks.
When the task is completed, you may use ec2-delete-disk-image to remove the
image from S3.
Checking on the Status of Your Import Task
The ec2-describe-conversion-tasks command returns the status of an import task. Status values include
the following:
• active—Your instance or volume is still importing.
• cancelling—Your instance or volume is still being canceled.
• cancelled—Your instance or volume is canceled.
• completed—Your instance or volume is ready to use.
The imported instance is in the stopped state. You use ec2-start-instance to start it. For more
information, see ec2-start-instances in the Amazon EC2 Command Line Reference.
To check the status of your import task
Use ec2-describe-conversion-tasks to return the status of the task. The syntax of the command is as
follows:
ec2-describe-conversion-tasks task_id
Example
The following example enables you to see the status of your import instance task.
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C:\> ec2-describe-conversion-tasks import-i-ffvko9js
Response 1
The following response shows that the IMPORTINSTANCE status is active, and 73747456 bytes out of
893968896 have been converted.
TaskType
IMPORTINSTANCE TaskId import-i-ffvko9js
ExpirationTime
2011-06-07T13:30:50+00:00
Status active StatusMessage
Pending In
stanceID
i-17912579
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
893968896 VolumeSize
12
AvailabilityZone
us-east-1
ApproximateBytesConverted
73747456
Status active StatusMessage
Pending
Response 2
The following response shows that the IMPORTINSTANCE status is active, at 7% progress, and the
DISKIMAGE is completed.
TaskType
IMPORTINSTANCE TaskId import-i-ffvko9js
ExpirationTime
2011-06-07T13:30:50+00:00
Status active StatusMessage
Progress: 7%
InstanceID
i-17912579
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
893968896 VolumeId
vol-9b59daf0
VolumeSize
12
AvailabilityZone
us-east-1
ApproximateBytesConverted
893968896 Status completed
Response 3
The following response shows that the IMPORTINSTANCE status is completed.
TaskType
IMPORTINSTANCE TaskId import-i-ffvko9js
ExpirationTime
2011-06-07T13:30:50+00:00
Status completed
InstanceID
i-17912579
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
893968896 VolumeId
vol-9b59daf0
VolumeSize
12
AvailabilityZone
us-east-1
ApproximateBytesConverted
893968896 Status completed
Note
The IMPORTINSTANCE status is what you use to determine the final status. The DISKIMAGE
status will be completed for a period of time before the IMPORTINSTANCE status is completed.
You can now use commands such as ec2-stop-instance, ec2-start-instance, ec2-rebootinstance, and ec2-terminate-instance to manage your instance. For more information, see the
Amazon EC2 Command Line Reference
Importing Your Volumes into Amazon EBS
This section describes how to import your data storage into Amazon EBS, and then attach it to one of
your existing EC2 instances. Amazon EC2 supports importing RAW, Virtual Hard Disk (VHD), and ESX
Virtual Machine Disk (VMDK) disk formats.
Important
We recommend using Amazon EC2 security groups to limit network access to your imported
instance. Configure a security group to allow only trusted EC2 instances and remote hosts to
connect to RDP and other service ports. For more information about security groups, see Amazon
EC2 Security Groups (p. 268).
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Importing a VM into Amazon EC2
After you have exported your virtual machine from the virtualization environment, importing the volume
to Amazon EBS is a single-step process. You create an import task and upload the volume.
To import a volume into Amazon EBS
1.
Use ec2-import-volume to create a task that allows you to upload your volume into Amazon EBS.
The syntax of the command is as follows:
ec2-import-volume disk_image -f file_format -s volume_size -z availabil
ity_zone -b s3_bucket_name -o owner -w secret_key
The following example creates an import volume task for importing a volume to the us-east-1 region
in the d availability zone.
C:\> ec2-import-volume Win_2008_R1_EE_64.vmdk –f vmdk –s 25 -z us-east-1d
-b myawsbucket -o AKIAIOSFODNN7EXAMPLE -w wJalrXUtnFEMI/K7MDENG/bPxRfi
CYEXAMPLEKEY --region us-east-1 -o AKIAI44QH8DHBEXAMPLE -w je7MtGbCl
wBF/2Zp9Utk/h3yCo8nvbEXAMPLEKEY
The following is an example response.
Requesting volume size: 25 GB
Disk image format: Stream-optimized VMDK
Converted volume size: 26843545600 bytes (25.00 GiB)
Requested EBS volume size: 26843545600 bytes (25.00 GiB)
TaskType
IMPORTVOLUME
TaskId import-vol-ffut5xv4
ExpirationTime
2011-09-09T15:22:30+00:00
Status active StatusMessage
Pending
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
5070303744
VolumeSize
25
AvailabilityZone
us-east-1d
Approximate
BytesConverted
0
Creating new manifest at myawsbucket/0fd8fcf5-04d8-44ae-981f3c9f56d04520/Win_2008_R1_EE_64.vmdkmanifest.xml
Uploading the manifest file
Uploading 5070303744 bytes across 484 parts
0% |--------------------------------------------------| 100%
|==================================================|
Done
Amazon EC2 returns a task ID that you use in the next step. In this example, the ID is import-volffut5xv4.
2.
Use ec2-describe-conversion-tasks to confirm that your volume imported successfully.
C:\> ec2-describe-conversion-tasks import-vol-ffut5xv4
TaskType
IMPORTVOLUME
TaskId import-vol-ffut5xv4
ExpirationTime
2011-09-09T15:22:30+00:00
Status completed
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
5070303744
VolumeId
vol-365a385c
VolumeSize
25
AvailabilityZone
us-east-1d
ApproximateBytesConverted
5070303744
The status in this example is completed, which means the import succeeded.
3.
Use ec2-attach-volume to attach the Amazon EBS volume to one of your existing EC2 instances.
The following example attaches the volume, vol-2540994c, to the i-a149ec4a instance on the
device, /dev/sde.
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C:\> ec2-attach-volume vol-2540994c -i i-a149ec4a -d xvde
ATTACHMENT vol-2540994c i-a149ec4a xvde attaching 2010-03-23T15:43:46+00:00
Resuming an Upload
Connectivity problems can interrupt an upload. When you resume an upload, Amazon EC2 automatically
starts the upload from where it stopped. The following procedure steps you through determining how
much of an upload succeeded and how to resume it.
To resume an upload
Use the task ID with ec2-resume-import to continue the upload. The command uses the HTTP HEAD action
to determine where to resume.
ec2-resume-import disk_image -t task_id -o owner -w secret_key
Example
The following example resumes an import instance task.
C:\> ec2-resume-import Win_2008_R1_EE_64.vmdk -t import-i-ffni8aei -o AKIAIOS
FODNN7EXAMPLE -w wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
The following shows the output when the import instance task is complete:
Disk image size: 5070303744 bytes (4.72 GiB)
Disk image format: Stream-optimized VMDK
Converted volume size: 26843545600 bytes (25.00 GiB)
Requested EBS volume size: 26843545600 bytes (25.00 GiB)
Uploading 5070303744 bytes across 484 parts
0% |--------------------------------------------------| 100%
|==================================================|
Done
Average speed was 10.316 MBps
The disk image for import-i-ffni8aei has been uploaded to Amazon S3
where it is being converted into an EC2 instance. You may monitor the
progress of this task by running ec2-describe-conversion-tasks. When
the task is completed, you may use ec2-delete-disk-image to remove the
image from S3.
Canceling an Upload
Use ec2-cancel-conversion-task to cancel an active import task. The task can be the upload of an instance
or a volume. The command removes all artifacts of the import, including uploaded volumes or instances.
If the import is complete or still transferring the final disk image, the command fails and returns an exception
similar to the following:
Client.CancelConversionTask Error: Failed to cancel conversion task import-ifh95npoc
To cancel an upload task
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Use the task ID of the upload you want to delete with ec2-cancel-conversion-task.
Example
The following example cancels the upload associated with the task ID import-i-fh95npoc.
C:\> ec2-cancel-conversion-task import-i-fh95npoc
The output for a successful cancellation is similar to the following:
CONVERSION-TASK import-i-fh95npoc
You can use the ec2-describe-conversion-tasks command to check the status of the cancellation as in
the following example:
C:\> ec2-describe-conversion-tasks import-i-fh95npoc
TaskType
IMPORTINSTANCE TaskId import-i-fh95npoc
ExpirationTime
2010-12-20T18:36:39+00:00
Status cancelled
InstanceID
i-825063ef
DISKIMAGE
DiskImageFormat VMDK
DiskImageSize
2671981568
VolumeSize
40
AvailabilityZone
us-east-1c ApproximateBytesCon
verted
0
Status cancelled
In this example, the status is cancelled. If the upload were still in process, the status would be cancelling.
Cleaning Up After an Upload
You can use ec2-delete-disk-image to remove the image file after it is uploaded. If you do not delete it,
you will be charged for its storage in Amazon S3.
To delete a disk image
Use the task ID of the disk image you want to delete with ec2-delete-disk-image.
Example
The following example deletes the disk image associated with the task ID, import-i-fh95npoc.
C:\> ec2-delete-disk-image -t import-i-fh95npoc
The output for a successful cancellation is similar to the following:
DELETE-TASK import-i-fh95npoc
Step 5: Launch the instance in Amazon EC2
After you upload the VM to Amazon S3, the VM Import process automatically converts it into an Amazon
EC2 instance and launches it as a stopped instance in the Amazon EC2 console. Before you can begin
using the instance, you must start it. For more information about working with an Amazon EC2 instance,
see Instance Lifecycle (p. 127).
To start the instance
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
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2.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, under INSTANCES, click Instances.
In the content pane, right-click the instance, and then click Start.
Exporting Amazon EC2 Instances
If you have previously imported an instance into Amazon EC2, you can use the command line tools to
export that instance to Citrix Xen, Microsoft Hyper-V, or VMware vSphere. Exporting an instance that you
previously imported is useful when you want to deploy a copy of your EC2 instance in your on-site virtualization environment.
Contents
• Export an Instance (p. 121)
• Cancel or Stop the Export of an Instance (p. 122)
Export an Instance
You can use the Amazon EC2 CLI to export an instance. If you haven't installed the CLI already, see
Setting Up the Amazon EC2 Tools.
The ec2-create-instance-export-task command gathers all of the information necessary (e.g., instance
ID; name of the Amazon S3 bucket that will hold the exported image; name of the exported image; VMDK,
OVA, or VHD format) to properly export the instance to the selected virtualization format. The exported
file is saved in the Amazon S3 bucket that you designate.
Note
When you export an instance, you are charged the standard Amazon S3 rates for the bucket
where the exported VM is stored. In addition, a small charge reflecting temporary use of an
Amazon EBS snapshot might appear on your bill. For more information about Amazon S3 pricing,
see Amazon Simple Storage Service (S3) Pricing.
To export an instance
1.
2.
Create an Amazon S3 bucket for storing the exported instances. The Amazon S3 bucket must grant
Upload/Delete and View Permissions access to the [email protected] account.
For more information, see Creating a Bucket and Editing Bucket Permissions in the Amazon Simple
Storage Service Console User Guide.
At a command prompt, type the following command:
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ec2-create-instance-export-task instance_id –e target_environment –f
disk_image_format -c container_format –b s3_bucket
instance_id
The ID of the instance you want to export.
target_environment
VMware, Citrix, or Microsoft.
disk_image_format
VMDK for VMware or VHD for Microsoft Hyper-V and Citrix Xen.
container_format
Optionally set to OVA when exporting to VMware.
s3_bucket
The name of the Amazon S3 bucket to which you want to export the instance.
3.
To monitor the export of your instance, at the command prompt, type the following command, where
task_id is the ID of the export task:
ec2-describe-export-tasks task_id
Cancel or Stop the Export of an Instance
You can use the Amazon EC2 CLI to cancel or stop the export of an instance up to the point of completion.
The ec2-cancel-export-task command removes all artifacts of the export, including any partially created
Amazon S3 objects. If the export task is complete or is in the process of transferring the final disk image,
the command fails and returns an error.
To cancel or stop the export of an instance
At the command prompt, type the following command, where task_id is the ID of the export task:
ec2-cancel-export-task task_id
Troubleshooting VM Import/Export
When importing or exporting a VM, most errors occur when you attempt to do something that isn't supported. To avoid these errors, read VM Import/Export Prerequisites (p. 109) before you begin an import
or an export.
Errors
• AWS Error Code: InvalidParameter, AWS Error Message: Parameter disk-image-size=0 has an invalid
format. (p. 123)
• Client.UnsupportedOperation: This instance has multiple volumes attached. Please remove additional
volumes. (p. 123)
• ClientError: Footers not identical (p. 123)
• ClientError: Uncompressed data has invalid length. (p. 123)
• ERROR: Bucket <MyBucketName> is not in the <RegionName> region, it's in <RegionName>. (p. 123)
• ERROR: File uses unsupported compression algorithm 0. (p. 124)
• Error starting instances: Invalid value <instance ID> for instanceId. Instance does not have a volume
attached at root (/dev/sda1). (p. 124)
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• java.lang.OutOfMemoryError: Java heap space (p. 124)
• Service.InternalError: An internal error has occurred. Status Code: 500, AWS Service:
AmazonEC2 (p. 124)
• FirstBootFailure: This import request failed because the Windows instance failed to boot and establish
network connectivity. (p. 124)
• Linux is not supported on the requested instance (p. 126)
AWS Error Code: InvalidParameter, AWS Error Message:
Parameter disk-image-size=0 has an invalid format.
The image format you used is not supported.
Resolution
Retry using one of the supported image formats: RAW, VHD, or VMDK.
Client.UnsupportedOperation: This instance has multiple
volumes attached. Please remove additional volumes.
The VM has multiple attached disks.
Resolution
Detach the extra drives and try again. If you need the data on the other volumes, copy the data to the
root volume and try to export the VM again.
ClientError: Footers not identical
You attempted to import a fixed or differencing VHD, or there was an error in creating the VHD.
Resolution
Export your VM again and retry importing it into Amazon EC2.
ClientError: Uncompressed data has invalid length.
The VMDK file is corrupted.
Resolution
You can try repairing or recreating the VMDK file, or use another one for your import.
ERROR: Bucket <MyBucketName> is not in the <RegionName> region, it's
in <RegionName>.
The Amazon S3 bucket is not in the same region as the instance you want to import.
Resolution
Try adding the --ignore-region-affinity option, which ignores whether the bucket's region matches
the region where the import task is created.You can also create an Amazon S3 bucket using the Amazon
Simple Storage Service console and set the region to the region where you want to import the VM. Run
the command again and specify the new bucket you just created.
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ERROR: File uses unsupported compression algorithm 0.
The VMDK was created using OVA format instead of OVF format.
Resolution
Create the VMDK in OVF format.
Error starting instances: Invalid value <instance ID> for instanceId. Instance does not have a volume attached at root
(/dev/sda1).
You attempted to start the instance before the VM import process and all conversion tasks were complete.
Resolution
Wait for the VM import process and all conversion tasks to completely finish, and then start the instance.
java.lang.OutOfMemoryError: Java heap space
There is not enough virtual memory available to launch Java, or the image you are trying to import is too
large.
Resolution
If you allocate extra memory to Java, the extra memory will only apply to JVM, but if that setting is specified
(explicitly for the EC2 command line tools) it will override the global settings. For example, you can use
the following command to allocate 512 MB of extra memory to Java 'set EC2_JVM_ARGS=-Xmx512m'.
Service.InternalError: An internal error has occurred. Status
Code: 500, AWS Service: AmazonEC2
You tried to import an instance that does not have a default VPC without specifying the subnet and
Availability Zone.
Resolution
If you're importing an instance without a default VPC, be sure to specify the subnet and Availability Zone.
FirstBootFailure: This import request failed because the
Windows instance failed to boot and establish network
connectivity.
When you import a VM using the ec2-import-instance command, the import task might stop before
its completed, and then fail. To investigate what went wrong, you can use the ec2-describe-conversiontasks command to describe the instance.
When you receive the FirstBootFailure error message, it means that your virtual disk image was unable
to perform one of the following steps:
• Boot up and start Windows.
• Install Amazon EC2 networking and disk drivers.
• Use a DHCP-configured network interface to retrieve an IP address.
• Activate Windows using the Amazon EC2 Windows volume license.
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Troubleshooting
The following best practices can help you to avoid Windows first boot failures:
• Disable anti-virus and anti-spyware software and firewalls. These types of software can prevent
installing new Windows services or drivers or prevent unknown binaries from running. Software and
firewalls can be re-enabled after importing.
• Do not harden your operating system. Security configurations, sometimes called hardening, can
prevent unattended installation of Amazon EC2 drivers. There are numerous Windows configuration
settings that can prevent import. These settings can be reapplied once imported.
• Disable or delete multiple bootable partitions. If your virtual machine boots and requires you to
choose which boot partition to use, the import may fail.
This inability of the virtual disk image to boot up and establish network connectivity could be due to any
of the following causes.
Causes
•
•
•
•
•
•
•
The installation of Windows is not valid on the virtual machine (p. 125)
TCP/IP networking and DHCP are not enabled (p. 125)
A volume that Windows requires is missing from the virtual machine (p. 125)
Windows always boots into System Recovery Options (p. 126)
The virtual machine was created using a physical-to-virtual (P2V) conversion process (p. 126)
Windows activation fails (p. 126)
No bootable partition found (p. 126)
The installation of Windows is not valid on the virtual machine
Cause: The installation of Windows must be valid before you can successfully import the virtual machine.
Resolution: Do not run System Preparation (Sysprep) before shutting down the EC2 instance. After the
instance is imported, you can run Sysprep from the instance before you create an AMI. Importing creates
a single instance, so running Sysprep is not necessary.
Ensure that the installation process is fully complete and that Windows boots (without user intervention)
to a login prompt.
TCP/IP networking and DHCP are not enabled
Cause: For any Amazon EC2 instance, including those in Amazon VPC, TCP/IP networking and DHCP
must be enabled. Within a VPC, you can define an IP address for the instance either before or after importing the instance. Do not set a static IP address before exporting the instance.
Resolution: Ensure that TCP/IP networking is enabled. For more information, see Setting up TCP/IP
(Windows Server 2003) or Configuring TCP/IP (Windows Server 2008) at the Microsoft TechNet website.
Ensure that DHCP is enabled. For more information, see What is DHCP at the Microsoft TechNet web
site.
A volume that Windows requires is missing from the virtual machine
Cause: Importing a VM into Amazon EC2 only imports the boot disk, all other disks must be detached
and Windows must able to boot before importing the virtual machine. For example, Active Directory often
stores the Active Directory database on the D:\ drive. A domain controller cannot boot if the Active Directory database is missing or inaccessible.
Resolution: Detach any secondary and network disks attached to the Windows VM before exporting.
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Move any Active Directory databases from secondary drives or partitions onto the primary Windows
partition. For more information, see "Directory Services cannot start" error message when you start your
Windows-based or SBS-based domain controller at the Microsoft Support website.
Windows always boots into System Recovery Options
Cause: Windows can boot into System Recovery Options for a variety of reasons, including when Windows
is pulled into a virtualized environment from a physical machine, also known as P2V.
Resolution: Ensure that Windows boots to a login prompt before exporting and preparing for import.
Do not import virtualized Windows instances that have come from a physical machine.
The virtual machine was created using a physical-to-virtual (P2V) conversion
process
Cause: A P2V conversion occurs when a disk image is created by performing the Windows installation
process on a physical machine and then importing a copy of that Windows installation into a VM. VMs
that are created as the result of a P2V conversion are not supported by Amazon EC2 VM import. Amazon
EC2 VM import only supports Windows images that were natively installed inside the source VM.
Resolution: Install Windows in a virtualized environment and migrate your installed software to that new
VM.
Windows activation fails
Cause: During boot, Windows will detect a change of hardware and attempt activation. During the import
process we attempt to switch the licensing mechanism in Windows to a volume license provided by
Amazon Web Services. However, if the Windows activation process does not succeed, then the import
will not succeed.
Resolution: Ensure that the version of Windows you are importing supports volume licensing. Beta or
preview versions of Windows might not.
No bootable partition found
Cause: During the import process of a virtual machine, we could not find the boot partition.
Resolution: Ensure that the disk you are importing has the boot partition. We do not support multi-disk
import.
Linux is not supported on the requested instance
Cause: Linux import is only supported on specific instance types.You attempted to import an unsupported
instance type.
Resolution: Retry using one of the supported instance types.
• General purpose: t2.micro | t2.small | t2.medium | m3.medium | m3.large | m3.xlarge |
m3.2xlarge
• Compute optimized: c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | cc2.8xlarge
• Memory optimized: cr1.8xlarge
• Storage optimized: hi1.4xlarge | hs1.8xlarge | i2.xlarge | i2.2xlarge | i2.4xlarge
• GPU: cg1.4xlarge
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Instance Launch
Instance Lifecycle
By working with Amazon EC2 to manage your instances from the moment you launch them through their
termination, you ensure that your customers have the best possible experience with the applications or
sites that you host on your instances.
The following illustration represents the transitions between instance states. Notice that you can't stop
and start an instance store-backed instance. For more information about instance store-backed instances,
see Storage for the Root Device (p. 49).
Instance Launch
When you launch an instance, it enters the pending state. The instance type that you specified at launch
determines the hardware of the host computer for your instance. We use the Amazon Machine Image
(AMI) you specified at launch to boot the instance. After the instance is ready for you, it enters the running
state. You can connect to your running instance and use it the way that you'd use a computer sitting in
front of you.
As soon as your instance starts to boot, you're billed for each hour or partial hour that you keep the instance
running (even if the instance remains idle and you don't connect to it).
For more information, see Launch Your Instance (p. 130) and Connecting to Your Windows Instance Using
RDP (p. 139).
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Instance Stop and Start (Amazon EBS-backed instances
only)
Instance Stop and Start (Amazon EBS-backed
instances only)
If your instance fails a status check or is not running your applications as expected, and if the root volume
of your instance is an Amazon EBS volume, you can stop and start your instance to try to fix the problem.
When you stop your instance, it enters the stopping state, and then the stopped state. We don't charge
hourly usage or data transfer fees for your instance after you stop it, but we do charge for the storage for
any Amazon EBS volumes. While your instance is in the stopped state, you can modify certain attributes
of the instance, including the instance type.
When you start your instance, it enters the pending state, and we move the instance to a new host
computer. Therefore, when you stop and start your instance, you'll lose any data on the instance store
volumes on the previous host computer.
If your instance is running in EC2-Classic, it receives a new private IP address, which means that an
Elastic IP address (EIP) associated with the private IP address is no longer associated with your instance.
If your instance is running in EC2-VPC, it retains its private IP address, which means that an EIP associated
with the private IP address or network interface is still associated with your instance.
Each time you transition an instance from stopped to running, we charge a full instance hour, even if
these transitions happen multiple times within a single hour.
For more information, see Stop and Start Your Instance (p. 141).
Instance Reboot
You can reboot your instance using the Amazon EC2 console, the Amazon EC2 CLI, and the Amazon
EC2 API. We recommend that you use Amazon EC2 to reboot your instance instead of running the operating system reboot command from your instance.
Rebooting an instance is equivalent to rebooting an operating system; the instance remains on the same
host computer and maintains its public DNS name, private IP address, and any data on its instance store
volumes. It typically takes a few minutes for the reboot to complete, but the time it takes to reboot depends
on the instance configuration.
Rebooting an instance doesn't start a new instance billing hour.
For more information, see Reboot Your Instance (p. 144).
Instance Retirement
An instance is scheduled to be retired when AWS detects irreparable failure of the underlying hardware
hosting the instance. When an instance reaches its scheduled retirement date, it is stopped or terminated
by AWS. If your instance root device is an Amazon EBS volume, the instance is stopped, and you can
start it again at any time. If your instance root device is an instance store volume, the instance is terminated,
and cannot be used again.
For more information, see Instance Retirement (p. 145).
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Instance Termination
When you've decided that you no longer need an instance, you can terminate it. As soon as the status
of an instance changes to shutting-down or terminated, you stop incurring charges for that instance.
Note that if you enable termination protection, you can't terminate the instance using the console, CLI,
or API.
After you terminate an instance, it remains visible in the console for a short while, and then the entry is
deleted. You can also describe a terminated instance using the CLI and API. You can't connect to or recover a terminated instance.
Each Amazon EBS-backed instance supports the InstanceInitiatedShutdownBehavior attribute,
which controls whether the instance stops or terminates when you initiate a shutdown from within the instance itself. The default behavior is to stop the instance. You can modify the setting of this attribute while
the instance is running or stopped.
Each Amazon EBS volume supports the DeleteOnTermination attribute, which controls whether the
volume is deleted or preserved when you terminate the instance it is attached to. The default is to preserve
volumes that you attach to a running instance and delete volumes that you attach at launch, such as the
root volume.
For more information, see Terminate Your Instance (p. 147).
Differences Between Reboot, Stop, and Terminate
The following table summarizes the key differences between rebooting, stopping, and terminating your
instance.
Characteristic Reboot
Stop/start (Amazon
EBS-backed instances
only)
Host
computer
The instance stays on the
same host computer
The instance runs on a new None
host computer
Private and
public IP
addresses
These addresses stay the
same
EC2-Classic: The instance None
gets new private and public
IP addresses
EC2-VPC: The instance
keeps its private IP
address. The instance gets
a new public IP address,
unless it has an Elastic IP
address (EIP), which
doesn't change during a
stop/start.
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Characteristic Reboot
Elastic IP
addresses
(EIP)
Stop/start (Amazon
EBS-backed instances
only)
The EIP remains associated EC2-Classic: The EIP is
with the instance
disassociated from the
instance
Terminate
The EIP is disassociated
from the instance
EC2-VPC:The EIP remains
associated with the
instance
Instance
store
volumes
The data is preserved
The data is erased
The data is erased
Root device
volume
The volume is preserved
The volume is preserved
The volume is deleted by
default
Billing
The instance billing hour
doesn't change.
You stop incurring charges
for an instance as soon as
its state changes to
stopping. Each time an
instance transitions from
stopped to pending, we
start a new instance billing
hour.
You stop incurring charges
for an instance as soon as
its state changes to
shutting-down.
Note that operating system shutdown commands always terminate an instance store-backed instance.
You can control whether operating system shutdown commands stop or terminate an Amazon EBSbacked instance For more information, see Changing the Instance Initiated Shutdown Behavior (p. 149).
Launch Your Instance
An instance is a virtual server in the AWS cloud.You launch an instance from an Amazon Machine Image
(AMI). The AMI provides the operating system, application server, and applications for your instance.
When you sign up for AWS, you can get started with Amazon EC2 for free using the AWS Free Usage
Tier. You can either leverage the Free Usage Tier to launch and use a micro instance for free for 12
months. If you launch an instance that is not within the Free Usage Tier, you incur the standard Amazon
EC2 usage fees for the instance. For more information, see the Amazon EC2 Pricing.
You can launch an instance using the following methods.
Method
Documentation
Use the Amazon EC2 console with an AMI that you Launching an Instance (p. 131)
select
Use the Amazon EC2 console to launch an
instance using an existing instance as a template
Launching an Instance Using an Existing Instance
as a Template (p. 136)
Use the Amazon EC2 console with an Amazon
EBS snapshot that you created
Launching an Instance from a Backup (p. 137)
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Method
Documentation
Use the Amazon EC2 console with an AMI that you Launching an AWS Marketplace Instance (p. 137)
purchased from the AWS Marketplace
Use the AWS CLI with an AMI that you select
Using Amazon EC2 through the AWS CLI
Use the Amazon EC2 CLI with an AMI that you
select
Launching an Instance Using the Amazon EC2 CLI
Use the AWS Tools for Windows PowerShell with
an AMI that you select
Amazon EC2 from the AWS Tools for Windows
PowerShell
After you launch your instance, you can connect to it and use it. To begin, the instance state is pending.
When the instance state is running, the instance has started booting. There might be a short time before
you can connect to the instance. The instance receives a public DNS name that you can use to contact
the instance from the Internet. The instance also receives a private DNS name that other instances
within the same Amazon EC2 network (EC2-Classic or EC2-VPC) can use to contact the instance. For
more information about connecting to your instance, see Connecting to Your Windows Instance Using
RDP (p. 139).
When you are finished with an instance, be sure to terminate it. For more information, see Terminate
Your Instance (p. 147).
Launching an Instance
Before you launch your instance, be sure that you are set up. For more information, see Setting Up with
Amazon EC2 (p. 14).
Your AWS account might support both the EC2-Classic and EC2-VPC platforms, depending on when
you created your account and which regions you've used.To find out which platform your account supports,
see Supported Platforms (p. 316). If your account supports EC2-Classic, you can launch an instance into
either platform. If your account supports EC2-VPC only, you can launch an instance into a VPC only.
Important
When you launch an instance that's not within the AWS Free Usage Tier, you are charged for
the time that the instance is running, even if it remains idle.
Launching Your Instance from an AMI
When you launch an instance, you must select a configuration, known as an Amazon Machine Image
(AMI). An AMI contains the information required to create a new instance. For example, an AMI might
contain the software required to act as a web server: for example, Windows, Apache, and your web site.
To launch an instance
1.
2.
Open the Amazon EC2 console.
In the navigation bar at the top of the screen, the current region is displayed. Select the region for
the instance.This choice is important because some Amazon EC2 resources can be shared between
regions, while others can't. Select the region that meets your needs. For more information, see Resource Locations (p. 428).
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3.
4.
From the Amazon EC2 console dashboard, click Launch Instance.
On the Choose an Amazon Machine Image (AMI) page, choose an AMI as follows:
a.
Select the type of AMI to use in the left pane:
Quick Start
A selection of popular AMIs to help you get started quickly. To ensure that you select an
AMI that is eligible for the free tier, click Free tier only in the left pane. (Notice that these
AMIs are marked Free tier eligible.)
My AMIs
The private AMIs that you own, or private AMIs that have been shared with you.
AWS Marketplace
An online store where you can buy software that runs on AWS, including AMIs. For more
information about launching an instance from the AWS Marketplace, see Launching an
AWS Marketplace Instance (p. 137).
Community AMIs
The AMIs that AWS community members have made available for others to use. To filter
the list of AMIs by operating system, select the Windows check box under Operating
system. You can also filter by architecture and root device type.
b.
c.
d.
5.
Check the Root device type listed for each AMI. Notice which AMIs are the type that you need,
either ebs (backed by Amazon EBS) or instance-store (backed by instance store). For more
information, see Storage for the Root Device (p. 49).
Check the Virtualization type listed for each AMI. Notice which AMIs are the type that you
need, either hvm or paravirtual. For example, some instance types require HVM.
Choose an AMI that meets your needs, and then click Select.
On the Choose an Instance Type page, select the hardware configuration and size of the instance
to launch. Larger instance types have more CPU and memory. For more information, see Instance
Types (p. 75).
To remain eligible for the free tier, select the t2.micro instance type. For more information, see T2
Instances (p. 77).
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By default, the wizard displays current generation instance types, and selects the first available instance type based on the AMI that you selected. To view previous generation instance types, select
All generations from the filter list.
Tip
If you are new to AWS and would like to set up an instance quickly for testing purposes,
you can click Review and Launch at this point to accept default configuration settings, and
launch your instance. Otherwise, to configure your instance further, click Next: Configure
Instance Details.
6.
On the Configure Instance Details page, change the following settings as necessary (expand Advanced Details to see all the settings), and then click Next: Add Storage:
• Number of instances: Enter the number of instances to launch.
• Purchasing option: Select Request Spot Instances to launch a Spot Instance.
• Your account may support the EC2-Classic and EC2-VPC platforms, or EC2-VPC only. To find
out which platform your account supports, see Supported Platforms (p. 316). If your account supports
EC2-VPC only, you can launch your instance into your default VPC or a nondefault VPC. Otherwise,
you can launch your instance into EC2-Classic or a nondefault VPC.
Note
You must launch a T2 instance into a VPC. If you don't have a VPC, you can let the wizard
create one for you.
To launch into EC2-Classic:
• Network: Select Launch into EC2-Classic.
• Availability Zone: Select the Availability Zone to use. To let AWS choose an Availability Zone
for you, select No preference.
To launch into a VPC:
• Network: Select the VPC, or to create a new VPC, click Create new VPC to go the Amazon
VPC console. When you have finished, return to the wizard and click Refresh to load your VPC
in the list.
• Subnet: Select the subnet into which to launch your instance. If your account is EC2-VPC only,
select No preference to let AWS choose a default subnet in any Availability Zone. To create a
new subnet, click Create new subnet to go to the Amazon VPC console. When you are done,
return to the wizard and click Refresh to load your subnet in the list.
• Auto-assign Public IP: Specify whether your instance receives a public IP address. By default,
instances in a default subnet receive a public IP address and instances in a nondefault subnet
do not. You can select Enable or Disable to override the subnet's default setting. For more information, see Public IP Addresses and External DNS Hostnames (p. 325).
• IAM role: If applicable, select an AWS Identity and Access Management (IAM) role to associate
with the instance. For more information, see IAM Roles for Amazon EC2 (p. 306).
• Shutdown behavior: Select whether the instance should stop or terminate when shut down. For
more information, see Changing the Instance Initiated Shutdown Behavior (p. 149).
• Enable termination protection: Select this check box to prevent accidental termination. For more
information, see Enabling Termination Protection for an Instance (p. 148).
• Monitoring: Select this check box to enable detailed monitoring of your instance using Amazon
CloudWatch. Additional charges apply. For more information, see Monitoring Your Instances with
CloudWatch (p. 201).
• EBS-Optimized instance: An Amazon EBS-optimized instance uses an optimized configuration
stack and provides additional, dedicated capacity for Amazon EBS I/O. If the instance type supports
this feature, select this check box to enable it. Additional charges apply. For more information, see
Amazon EBS–Optimized Instances (p. 94).
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• Tenancy: If you are launching your instance into a VPC, you can select Dedicated tenancy to
run your instance on isolated, dedicated hardware. Additional charges apply. For more information,
see Dedicated Instances in the Amazon VPC User Guide.
• Network interfaces: If you are launching an instance into a VPC and you did not select No Preference for your subnet, you can specify up to two network interfaces in the wizard. Click Add IP
to assign more than one IP address to the selected interface. For more information about network
interfaces, see Elastic Network Interfaces (ENI) (p. 338). If you selected the Public IP check box
above, you can only assign a public IP address to a single, new network interface with the device
index of eth0. For more information, see Assigning a Public IP Address (p. 328).
• Kernel ID: (Only valid for paravirtual (PV) AMIs) Select Use default unless you want to use a
specific kernel.
• RAM disk ID: (Only valid for paravirtual (PV) AMIs) Select Use default unless you want to use a
specific RAM disk. If you have selected a kernel, you may need to select a specific RAM disk with
the drivers to support it.
• Placement group: A placement group is a logical grouping for your cluster instances. Select an
existing placement group, or create a new one. This option is only available if you've selected an
instance type that supports placement groups. For more information, see Placement Groups (p. 95).
• User data: You can specify user data to configure an instance during launch, or to run a configuration script. To attach a file, select the As file option and browse for the file to attach.
7.
On the Add Storage page, you can specify volumes to attach to the instance besides the volumes
specified by the AMI (such as the root device volume). You can change the following options, then
click Next: Tag Instance when you have finished:
• Type: Select instance store or Amazon EBS volumes to associate with your instance. The type of
volume available in the list depends on the instance type you've chosen. For more information,
see Amazon EC2 Instance Store (p. 407) and Amazon EBS Volumes (p. 357).
• Device: Select from the list of available device names for the volume.
• Snapshot: Enter the name or ID of the snapshot from which to restore a volume. You can also
search for public snapshots by typing text into the Snapshot field. Snapshot descriptions are casesensitive.
• Size: For Amazon EBS-backed volumes, you can specify a storage size. Note that even if you
have selected an AMI and instance that are eligible for the free usage tier, you need to keep under
30 GiB of total storage to stay within the free usage tier.
Note
If you increase the size of your root volume at this point (or any other volume created
from a snapshot), you need to extend the file system on that volume in order to use the
extra space. For more information about extending your file system after your instance
has launched, see Expanding the Storage Space of a Volume (p. 380).
• Volume Type: For Amazon EBS volumes, select either a General Purpose (SSD), Provisioned
IOPS (SSD), or Magnetic volume. For more information, see Amazon EBS Volume Types (p. 359).
Note
If you select a Magnetic boot volume, you'll be prompted when you complete the wizard
to make General Purpose (SSD) volumes the default boot volume for this instance and
future console launches. (This preference persists in the browser session, and does not
affect AMIs with Provisioned IOPS (SSD) boot volumes.) We recommended that you
make General Purpose (SSD) volumes the default because they provide a much faster
boot experience and they are the optimal volume type for most workloads. For more information, see Amazon EBS Volume Types (p. 359).
Note
Some AWS accounts created before 2012 might have access to Availability Zones in useast-1, us-west-1, or ap-northeast-1 that do not support SSD volumes such as Provisioned
IOPS (SSD) and General Purpose (SSD). If you are unable to create an SSD volume (or
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launch an instance with an SSD volume in its block device mapping) in one of these regions, try a different Availability Zone in the region. You can verify that an Availability
Zone supports General Purpose (SSD) and Provisioned IOPS (SSD) volumes by creating
a 1 GiB General Purpose (SSD) volume in that zone.
• IOPS: If you have selected a Provisioned IOPS (SSD) volume type, then you can enter the number
of I/O operations per second (IOPS) that the volume can support.
• Delete on Termination: For Amazon EBS volumes, select this check box to delete the volume
when the instance is terminated. For more information, see Preserving Amazon EBS Volumes on
Instance Termination (p. 150).
• Encrypted: Select this check box to encrypt new Amazon EBS volumes. Amazon EBS volumes
that are restored from encrypted snapshots are automatically encrypted. Encrypted volumes may
only be attached to supported instance types (p. 391).
Note
Encrypted boot volumes are not supported at this time.
8.
9.
On the Tag Instance page, specify tags (p. 433) for the instance by providing key and value combinations. Click Create Tag to add more than one tag to your resource. Click Next: Configure Security
Group when you are done.
On the Configure Security Group page, use a security group to define firewall rules for your instance.
These rules specify which incoming network traffic is delivered to your instance. All other traffic is
ignored. (For more information about security groups, see Amazon EC2 Security Groups (p. 268).)
Select or create a security group as follows, and then click Review and Launch.
To select an existing security group:
1.
2.
3.
Click Select an existing security group. Your security groups are displayed. (If you are
launching into EC2-Classic, these are security groups for EC2-Classic. If you are launching into
a VPC, these are security group for that VPC.)
Select a security group from the list.
(Optional) You can't edit the rules of an existing security group, but you can copy them to a new
group by clicking Copy to new. Then you can add rules as described in the next procedure.
To create a new security group:
1.
Click Create a new security group. The wizard automatically defines the launch-wizard-x security group.
2.
3.
(Optional) You can edit the name and description of the security group.
The wizard automatically defines an inbound rule to allow to you connect to your instance over
RDP (port 3389).
Caution
This rule enables all IP addresses (0.0.0.0/0) to access your instance over the specified port. This is acceptable for this short exercise, but it's unsafe for production environments. You should authorize only a specific IP address or range of addresses to
access your instance.
4.
You can add rules to suit your needs. For example, if your instance is a web server, open ports
80 (HTTP) and 443 (HTTPS) to allow Internet traffic.
To add a rule, click Add Rule, select the protocol to open to network traffic, and then specify
the source. Select My IP from the Source list to let the wizard add your computer's public IP
address. However, if you are connecting through an ISP or from behind your firewall without a
static IP address, you need to find out the range of IP addresses used by client computers.
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10. On the Review Instance Launch page, check the details of your instance, and make any necessary
changes by clicking the appropriate Edit link.
When you are ready, click Launch.
11. In the Select an existing key pair or create a new key pair dialog box, you can choose an existing
key pair, or create a new one. For example, select Choose an existing key pair, then select the
key pair you created when getting set up.
To launch your instance, select the acknowledgment check box, then click Launch Instances.
Important
We recommend against selecting the Proceed without key pair option. If you launch an
instance without a key pair, you won't be able to connect to it. This option is used only when
you are creating your own AMI and don't need to connect to the instance.
12. If the instance state immediately goes to terminated instead of running, you can get information
about why the instance didn't launch. For more information, see Instance terminates immediately (p. 493).
Launching an Instance Using an Existing Instance
as a Template
The Amazon EC2 console provides a Launch More Like This wizard option that enables you to use a
current instance as a template for launching other instances. This option automatically populates the
Amazon EC2 launch wizard with certain configuration details from the selected instance.
Note
The Launch More Like This wizard option does not clone your selected instance; it only replicates
some configuration details. To create a copy of your instance, first create an AMI from it, then
launch more instances from the AMI.
The following configuration details are copied from the selected instance into the launch wizard:
•
•
•
•
•
•
AMI ID
Instance type
Availability Zone, or the VPC and subnet in which the selected instance is located
Tags associated with the instance, if applicable
Kernel ID and RAM disk ID, if applicable
IAM role associated with the instance, if applicable
• Security group associated with the instance
• Tenancy setting, if launching into a VPC (shared or dedicated)
• Amazon EBS-optimization setting (true or false)
The following configuration details are not copied from your selected instance; instead, the wizard applies
their default settings or behavior:
• Storage: The default storage configuration is determined by the AMI and the instance type.
• Public IP address: The option to assign a public IP address to your instance is enabled by default when
launching into a default subnet.
• Termination protection: Disabled by default.
• Shutdown behavior: Set to 'stop' by default.
• User data: None by default.
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To use your current instance as a template
1.
On the Instances page, select the instance you want to use.
2.
3.
Click Actions, and select Launch More Like This.
The launch wizard opens on the Review Instance Launch page. You can check the details of your
instance, and make any necessary changes by clicking the appropriate Edit link.
When you are ready, click Launch to select a key pair and launch your instance.
Launching an Instance from a Backup
At this time, although you can create a Windows AMI from a snapshot, you can't launch an instance from
the AMI.
Launching an AWS Marketplace Instance
You can subscribe to an AWS Marketplace product and launch an instance from the product's AMI using
the Amazon EC2 launch wizard. For more information about paid AMIs, see Paid AMIs (p. 59). To cancel
your subscription after launch, you first have to terminate all instances running from it. For more information,
see Managing Your AWS Marketplace Subscriptions (p. 62).
To launch an instance from the AWS Marketplace using the launch wizard
1.
2.
3.
4.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
From the Amazon EC2 dashboard, click Launch Instance.
On the Choose an Amazon Machine Image (AMI) page, select the AWS Marketplace category
on the left. Find a suitable AMI by browsing the categories, or using the search functionality. Click
Select to choose your product.
A dialog displays an overview of the product you've selected. You can view the pricing information,
as well as any other information that the vendor has provided. When you're ready, click Continue.
Note
You are not charged for using the product until you have launched an instance with the AMI.
Take note of the pricing for each supported instance type, as you will be prompted to select
an instance type on the next page of the wizard.
5.
6.
On the Choose an Instance Type page, select the hardware configuration and size of the instance
to launch. When you're done, click Next: Configure Instance Details.
On the next pages of the wizard, you can configure your instance, add storage, and add tags. For
more information about the different options you can configure, see Launching an Instance (p. 131).
Click Next until you reach the Configure Security Group page.
The wizard creates a new security group according to the vendor's specifications for the product.
The security group may include rules that allow all IP addresses (0.0.0.0/0) access on RDP (port
3389). We recommend that you adjust these rules to allow only a specific IP address or range of
addresses to access your instance over those specific ports.
7.
8.
When you are ready, click Review and Launch.
On the Review Instance Launch page, check the details of the AMI from which you're about to
launch the instance, as well as the other configuration details you set up in the wizard. When you're
ready, click Launch to choose or create a key pair, and launch your instance.
Depending on the product you've subscribed to, the instance may take a few minutes or more to
launch. You are first subscribed to the product before your instance can launch. If there are any
problems with your credit card details, you will be asked to update your account details. When the
launch confirmation page displays, click View Instances to go to the Instances page.
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Note
You are charged the subscription price as long as your instance is running, even if it is idle.
If your instance is stopped, you may still be charged for storage.
9.
When your instance is in the running state, you can connect to it. To do this, select your instance
in the list and click Connect. Follow the instructions in the dialog. For more information about connecting to your instance, see Connecting to Your Windows Instance Using RDP (p. 139).
Important
Check the vendor's usage instructions carefully, as you may need to use a specific user
name to log in to the instance. For more information about accessing your subscription details,
see Managing Your AWS Marketplace Subscriptions (p. 62).
Launching an AWS Marketplace AMI Instance Using the API
and CLI
To launch instances from AWS Marketplace products using the API or command line tools, first ensure
that you are subscribed to the product. You can then launch an instance with the product's AMI ID using
the following methods:
Method
Documentation
AWS CLI
Use the run-instances command, or see the following topic for more
information: Launching an Instance.
Amazon EC2 CLI
Use the ec2-run-instances command, or see the following topic for
more information: Launching an Instance Using the Amazon EC2 CLI.
AWS Tools for Windows
PowerShell
Use the New-EC2Instance command, or see the following topic for
more information: Launch an Amazon EC2 Instance Using Windows
PowerShell
Query API
Use the RunInstances request.
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Connect
Connecting to Your Windows Instance Using
RDP
After you launch your instance, you can connect to it and use it the way that you'd use a computer sitting
in front of you.
If you receive an error while attempting to connect to your instance, see Troubleshooting Windows Instances (p. 492).
The following instructions explain how to connect to your instance using an RDP client.
Prerequisites
• Install an RDP client
Your Windows computer includes an RDP client by default. You can check for an RDP client by typing
mstsc at a Command Prompt window. If your computer doesn't recognize this command, see the Microsoft Windows home page and search for the download for Remote Desktop Connection. For Mac
OS X, you can use Microsoft's Remote Desktop Connection Client, or the Microsoft Remote Desktop
app from the Apple iTunes store. For Linux, you can use rdesktop.
Important
If you are connecting to a Windows 2012 R2 instance using Mac OS X, the Remote Desktop
Connection client from the Microsoft website may not work. Use the Microsoft Remote Desktop
app from the Apple iTunes store instead.
• Get the ID of the instance
You can get the ID of your instance using the Amazon EC2 console (from the Instance ID column). If
you prefer, you can use the describe-instances (AWS CLI) or ec2-describe-instances (Amazon EC2
CLI) command.
• Get the public DNS name of the instance
You can get the public DNS for your instance using the Amazon EC2 console (check the Public DNS
column; if this column is hidden, click the Show/Hide icon and select Public DNS). If you prefer, you
can use the describe-instances (AWS CLI) or ec2-describe-instances (Amazon EC2 CLI) command.
• Locate the private key
You'll need the fully-qualified path of the .pem file for the key pair that you specified when you launched
the instance.
• Enable inbound RDP traffic from your IP address to your instance
Ensure that the security group associated with your instance allows incoming RDP traffic from your IP
address. For more information, see Authorizing Inbound Traffic for Your Instances (p. 312).
Important
Your default security group does not allow incoming RDP traffic by default.
• For the best experience using Internet Explorer, run the latest version.
Connect to Your Windows Instance
To connect to a Windows instance, you must retrieve the initial administrator password and then specify
this password when you connect to your instance using Remote Desktop.
The name of the administrator account depends on the language of the operating system. For example,
for English, it's Administrator, for French it's Administrateur, and for Portuguese it's Administrador. For
more information, see Localized Names for Administrator Account in Windows in the Microsoft TechNet
Wiki.
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Connecting to Windows
Windows instances are limited to two simultaneous remote connections at one time. If you attempt a third
connection, an error will occur. For more information, see Configure the Number of Simultaneous Remote
Connections Allowed for a Connection.
To connect to your Windows instance
1.
In the Amazon EC2 console, select the instance, and then click Connect.
2.
In the Connect To Your Instance dialog box, click Get Password (it will take a few minutes after
the instance is launched before the password is available).
3.
Click Browse and navigate to the private key file you created when you launched the instance. Select
the file and click Open to copy the entire contents of the file into contents box.
Click Decrypt Password. The console displays the default administrator password for the instance
in the Connect To Your Instance dialog box, replacing the link to Get Password shown previously
with the actual password.
Record the default administrator password, or copy it to the clipboard. You need this password to
connect to the instance.
4.
5.
6.
Click Download Remote Desktop File. Your browser prompts you to either open or save the .rdp
file. Either option is fine. When you have finished, you can click Close to dismiss the Connect To
Your Instance dialog box.
• If you opened the .rdp file, you'll see the Remote Desktop Connection dialog box.
• If you saved the .rdp file, navigate to your downloads directory, and double-click the .rdp file to
display the dialog box.
7.
8.
You may get a warning that the publisher of the remote connection is unknown. If you are using
Remote Desktop Connection from a Windows PC, click Connect to connect to your instance. If
you are using Microsoft Remote Desktop on a Mac, skip the next step.
When prompted, log in to the instance, using the administrator account for the operating system and
the password that you recorded or copied previously. If your Remote Desktop Connection already
has an administrator account set up, you might have to click the Use another account option and
enter the user name and password manually.
Note
Sometimes copying and pasting content can corrupt data. If you encounter a "Password
Failed" error when you log in, try typing in the password manually.
9.
Due to the nature of self-signed certificates, you may get a warning that the security certificate could
not be authenticated. Use the following steps to verify the identity of the remote computer, or simply
click Yes or Continue to continue if you trust the certificate.
a.
If you are using Remote Desktop Connection from a Windows PC, click View certificate. If
you are using Microsoft Remote Desktop on a Mac, click Show Certificate.
b.
Click the Details tab, and scroll down to the Thumbprint entry on a Windows PC, or the SHA1
Fingerprints entry on a Mac. This is the unique identifier for the remote computer's security
certificate.
In the Amazon EC2 console, select the instance, click Actions, and then click Get System Log.
c.
d.
e.
f.
In the system log output, look for an entry labelled RDPCERTIFICATE-THUMBPRINT. If this value
matches the thumbprint or fingerprint of the certificate, you have verified the identity of the remote
computer.
If you are using Remote Desktop Connection from a Windows PC, return to the Certificate
dialog box and click OK. If you are using Microsoft Remote Desktop on a Mac, return to the
Verify Certificate and click Continue.
If you are using Remote Desktop Connection from a Windows PC, click Yes in the Remote
Desktop Connection window to connect to your instance. If you are using Microsoft Remote
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Transfer Files to Windows Server Instances from Windows
Desktop on a Mac, log in to the instance as prompted, using the default Administrator account
and the default administrator password that you recorded or copied previously.
Note
On a Mac, you may need to switch spaces to see the Microsoft Remote Desktop login
screen. For more information on spaces, see http://support.apple.com/kb/PH14155.
After you connect, we recommend that you do the following:
• Change the administrator password from the default value. You change the password while logged on
to the instance itself, just as you would on any other Windows Server.
• Create another user account with administrator privileges on the instance. Another account with administrator privileges is a safeguard if you forget the administrator password or have a problem with the
administrator account.
Transfer Files to Windows Server Instances from
Windows
You can work with your Windows instance the same way that you would work with any Windows server.
For example, you can transfer files between a Windows instance and your local Windows computer using
the local file sharing feature of Windows Remote Desktop. If you enable this option in your Windows
Remote Desktop Connection software, you can access your local files from your Windows instances.
You can access local files on hard disk drives, DVD drives, portable media drives, and mapped network
drives. For information about this feature, go to the Microsoft Support website or The most useful feature
of Remote Desktop I never knew about on the MSDN Blogs website.
Stop and Start Your Instance
You can stop and restart your instance if it has an Amazon EBS volume as its root device. The instance
retains its instance ID, but can change as described in the Overview section.
When you stop an instance, we shut it down. We don't charge hourly usage for a stopped instance, or
data transfer fees, but we do charge for the storage for any Amazon EBS volumes. Each time you start
a stopped instance we charge a full instance hour, even if you make this transition multiple times within
a single hour.
While the instance is stopped, you can treat its root volume like any other volume, and modify it (for example, repair file system problems or update software). You just detach the volume from the stopped instance, attach it to a running instance, make your changes, detach it from the running instance, and then
reattach it to the stopped instance. Make sure that you reattach it using the storage device name that's
specified as the root device in the block device mapping for the instance.
If you decide that you no longer need an instance, you can terminate it. As soon as the state of an instance
changes to shutting-down or terminated, we stop charging for that instance. For more information,
see Terminate Your Instance (p. 147).
Topics
• Overview (p. 142)
• Stopping and Starting Your Instances (p. 142)
• Modifying a Stopped Instance (p. 143)
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Overview
Overview
You can only stop an Amazon EBS-backed instance. To verify the root device type of your instance, describe the instance and check whether the device type of its root volume is ebs (Amazon EBS-backed
instance) or instance store (instance store-backed instance). For more information, see Determining
the Root Device Type of Your AMI (p. 50).
When you stop a running instance, the following happens:
• The instance performs a normal shutdown and stops running; its status changes to stopping and
then stopped.
• Any Amazon EBS volumes remain attached to the instance, and their data persists.
• Any data stored in the RAM of the host computer or the instance store volumes of the host computer
is gone.
• EC2-Classic: We release the public and private IP addresses for the instance when you stop the instance,
and assign new ones when you restart it.
EC2-VPC: The instance retains its private IP addresses when stopped and restarted. We release the
public IP address and assign a new one when you restart it.
• EC2-Classic: We disassociate any Elastic IP address (EIP) that's associated with the instance. You're
charged for Elastic IP addresses that aren't associated with an instance. When you restart the instance,
you must associate the Elastic IP address with the instance; we don't do this automatically.
EC2-VPC: The instance retains its associated Elastic IP addresses (EIP). You're charged for any
Elastic IP addresses associated with a stopped instance.
• When you stop and restart a Windows instance, by default, we change the instance host name to match
the new IP address and initiate a reboot. By default, we also change the drive letters for any attached
Amazon EBS volumes. For more information about these defaults and how you can change them, see
Configuring a Windows Instance Using the EC2Config Service (p. 153).
• If you've registered the instance with a load balancer, it's likely that the load balancer won't be able to
route traffic to your instance after you've stopped and restarted it. You must de-register the instance
from the load balancer after stopping the instance, and then re-register after starting the instance. For
more information, see De-Registering and Registering Amazon EC2 Instances in the Elastic Load
Balancing Developer Guide.
For more information, see Differences Between Reboot, Stop, and Terminate (p. 129).
You can modify the following attributes of an instance only when it is stopped:
• Instance type
• User data
• Kernel
• RAM disk
If you try to modify these attributes while the instance is running, Amazon EC2 returns the IncorrectInstanceState error.
Stopping and Starting Your Instances
You can start and stop your Amazon EBS-backed instance using the console or the command line.
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Modifying a Stopped Instance
By default, when you initiate a shutdown from an Amazon EBS-backed instance (using the shutdown,
halt, or poweroff command), the instance stops.You can change this behavior so that it terminates instead.
For more information, see Changing the Instance Initiated Shutdown Behavior (p. 149).
To stop and start an Amazon EBS-backed instance using the console
1.
In the navigation pane, click Instances, and select the instance.
2.
[EC2-Classic] If the instance has an associated Elastic IP address, write down the Elastic IP address
and the instance ID shown in the details pane.
3.
Click Actions, and then click Stop. If Stop is disabled, either the instance is already stopped or its
root device is an instance store volume.
In the confirmation dialog box, click Yes, Stop. It can take a few minutes for the instance to stop.
4.
[EC2-Classic] When the instance state becomes stopped, the Elastic IP, Public DNS, Private
DNS, and Private IPs fields in the details pane are blank to indicate that the old values are no longer
associated with the instance.
5.
6.
7.
8.
While your instance is stopped, you can modify certain instance attributes. For more information,
see Modifying a Stopped Instance (p. 143).
To restart the stopped instance, select the instance, click Actions, and then click Start.
In the confirmation dialog box, click Yes, Start. It can take a few minutes for the instance to enter
the running state.
[EC2-Classic] When the instance state becomes running, the Public DNS, Private DNS, and
Private IPs fields in the details pane contain the new values that we assigned to the instance.
[EC2-Classic] If your instance had an associated Elastic IP address, you must reassociate it as follows:
a.
b.
c.
d.
In the navigation pane, click Elastic IPs.
Select the Elastic IP address that you wrote down before you stopped the instance.
Click Associate Address.
Select the instance ID that you wrote down before you stopped the instance, and then click
Associate.
To stop and start an Amazon EBS-backed instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• stop-instances and start-instances (AWS CLI)
• ec2-stop-instances and ec2-start-instances (Amazon EC2 CLI)
• Stop-EC2Instance and Start-EC2Instance (AWS Tools for Windows PowerShell)
Modifying a Stopped Instance
You can change the instance type and user data attributes using the AWS Management Console or the
command line interface. You can't use the AWS Management Console to modify the kernel or RAM disk
attributes.
To change the instance type for a stopped instance using the console
1.
In the navigation pane, click Instances.
2.
Select the stopped instance, click Actions, and then click Change Instance Type.
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Reboot
3.
In the Change Instance Type dialog box, in the Instance Type list, select the type of instance you
need, and then click Apply.
For more information, see Resizing Your Instance (p. 97).
To change the user data for a stopped instance using the console
1.
2.
In the navigation pane, click Instances.
Select the stopped instance, click Actions, and then click View/Change User Data.
3.
In the View/Change User Data dialog box, update the user data, and then click Save. Note that you
can't change the user data if the instance is running, but you can view it.
To modify an instance attribute using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-instance-attribute (AWS CLI)
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Reboot Your Instance
An instance reboot is equivalent to an operating system reboot. In most cases, it takes only a few minutes
to reboot your instance. When you reboot an instance, it remains on the same physical host, so your instance keeps its public DNS name, private IP address, and any data on its instance store volumes.
Rebooting an instance doesn't start a new instance billing hour, unlike stopping and restarting your instance.
We might schedule your instance for a reboot for necessary maintenance, such as to apply updates that
require a reboot. No action is required on your part; we recommend that you wait for the reboot to occur
within its scheduled window. For more information, see Monitoring Events for Your Instances (p. 198).
We recommend that you use Amazon EC2 to reboot your instance instead of running the operating system
reboot command from your instance.
To reboot an instance using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
3.
4.
Select the instance, click Actions, and then click Reboot.
Click Yes, Reboot when prompted for confirmation.
To reboot an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• reboot-instances (AWS CLI)
• ec2-reboot-instances (Amazon EC2 CLI)
• Restart-EC2Instance (AWS Tools for Windows PowerShell)
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Retire
Instance Retirement
An instance is scheduled to be retired when AWS detects irreparable failure of the underlying hardware
hosting the instance. When an instance reaches its scheduled retirement date, it is stopped or terminated
by AWS. If your instance root device is an Amazon EBS volume, the instance is stopped, and you can
start it again at any time. Starting the stopped instance migrates it to new hardware. If your instance root
device is an instance store volume, the instance is terminated, and cannot be used again.
Topics
• Identifying Instances Scheduled for Retirement (p. 145)
• Working with Instances Scheduled for Retirement (p. 146)
For more information about types of instance events, see Monitoring Events for Your Instances (p. 198).
Identifying Instances Scheduled for Retirement
If your instance is scheduled for retirement, you'll receive an email prior to the event with the instance ID
and retirement date. This email is sent to the address that's associated with your account; the same email
address that you use to log in to the AWS Management Console. If you use an email account that you
do not check regularly, then you can use the Amazon EC2 console or the command line to determine if
any of your instances are scheduled for retirement.
To identify instances scheduled for retirement using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click EC2 Dashboard. Under Scheduled Events, you can see the events
associated with your Amazon EC2 instances and volumes, organized by region.
3.
If you have an instance with a scheduled event listed, click its link below the region name to go to
the Events page.
The Events page lists all resources with events associated with them. To view instances that are
scheduled for retirement, select Instance resources from the first filter list, and then Instance retirement from the second filter list.
If the filter results show that an instance is scheduled for retirement, select it, and note the date and
time in the Start time field in the details pane. This is your instance retirement date.
4.
5.
To identify instances scheduled for retirement using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-instance-status (AWS CLI)
• ec2-describe-instance-status (Amazon EC2 CLI)
• Get-EC2InstanceStatus (AWS Tools for Windows PowerShell)
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Working with Instances Scheduled for Retirement
Working with Instances Scheduled for Retirement
There are a number of actions available to you when your instance is scheduled for retirement. The action
you take depends on whether your instance root device is an Amazon EBS volume, or an instance store
volume. If you do not know what your instance root device type is, you can find out using the Amazon
EC2 console or the command line.
Determining Your Instance Root Device Type
To determine your instance root device type using the console
1.
2.
3.
In the navigation pane, click Events. Use the filter lists to identify retiring instances, as demonstrated
in the procedure above, Identifying instances scheduled for retirement (p. 145).
In the Resource ID column, click the instance ID to go to the Instances page.
Select the instance and locate the Root device type field in the Description tab. If the value is ebs,
then your instance is EBS-backed. If the value is instance-store, then your instance is instance
store-backed.
To determine your instance root device type using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-instances (AWS CLI)
• ec2-describe-instances (Amazon EC2 CLI)
• Get-EC2Instance (AWS Tools for Windows PowerShell)
Managing Instances Scheduled for Retirement
You can perform one of the actions listed below in order to preserve the data on your retiring instance.
It's important that you take this action before the instance retirement date, to prevent unforeseen downtime
and data loss.
Warning
If your instance store-backed instance passes its retirement date, it's terminated and you cannot
recover the instance or any data that was stored on it. Regardless of the root device of your instance, the data on instance store volumes is lost when the instance is retired, even if they are
attached to an EBS-backed instance.
Instance Root Device
Type
Action
EBS
Wait for the scheduled retirement date - when the instance is stopped - or
stop the instance yourself before the retirement date. You can start the
instance again at any time. For more information about stopping and starting
your instance, and what to expect when your instance is stopped, such as
the effect on public, private and Elastic IP addresses associated with your
instance, see Stop and Start Your Instance (p. 141).
EBS
Create an EBS-backed AMI from your instance, and launch a replacement
instance. For more information, see Creating an Amazon EBS-Backed
Windows AMI (p. 62).
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Terminate
Instance Root Device
Type
Action
Instance store
Bundle your instance, and then create an instance store-backed AMI from
the manifest that's created during bundling. You can launch a replacement
instance from your new AMI. For more information, see Creating an Instance
Store-Backed Windows AMI (p. 64).
Terminate Your Instance
When you've decided that you no longer need an instance, you can terminate it. As soon as the state of
an instance changes to shutting-down or terminated, you stop incurring charges for that instance.
You can't connect to or restart an instance after you've terminated it. However, you can launch additional
instances using the same AMI. If you'd rather stop and restart your instance, see Stop and Start Your
Instance (p. 141). For more information, see Differences Between Reboot, Stop, and Terminate (p. 129).
Topics
• Instance Termination (p. 147)
• Terminating an Instance (p. 148)
• Enabling Termination Protection for an Instance (p. 148)
• Changing the Instance Initiated Shutdown Behavior (p. 149)
• Preserving Amazon EBS Volumes on Instance Termination (p. 150)
Instance Termination
After you terminate an instance, it remains visible in the console for a short while, and then the entry is
deleted.
When an instance terminates, the data on any instance store volumes associated with that instance is
deleted.
By default, any Amazon EBS volumes that you attach as you launch the instance are automatically deleted
when the instance terminates. However, by default, any volumes that you attach to a running instance
persist even after the instance terminates. This behavior is controlled by the volume's DeleteOnTermination attribute, which you can modify. For more information, see Preserving Amazon EBS Volumes on
Instance Termination (p. 150).
You can prevent an instance from being terminated accidentally by someone using the AWS Management
Console, the CLI, and the API. This feature is available for both Amazon EC2 instance store-backed and
Amazon EBS-backed instances. Each instance has a DisableApiTermination attribute with the default
value of false (the instance can be terminated through Amazon EC2). You can modify this instance attribute while the instance is running or stopped (in the case of Amazon EBS-backed instances). For more
information, see Enabling Termination Protection for an Instance (p. 148).
You can control whether an instance should stop or terminate when shutdown is initiated from the instance
using an operating system command for system shutdown. For more information, see Changing the Instance Initiated Shutdown Behavior (p. 149).
If you run a script on instance termination, your instance might have an abnormal termination, because
we have no way to ensure that shutdown scripts run. Amazon EC2 attempts to shut an instance down
cleanly and run any system shutdown scripts; however, certain events (such as hardware failure) may
prevent these system shutdown scripts from running.
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Terminating an Instance
Terminating an Instance
You can terminate an instance using the AWS Management Console or the command line.
To terminate an instance using the console
1.
2.
3.
Before you terminate the instance, verify that you won't lose any data by checking that your Amazon
EBS volumes won't be deleted on termination and that you've copied any data that you need from
your instance store volumes to Amazon EBS or Amazon S3.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
4.
5.
Select the instance, click Actions, and then click Terminate.
Click Yes, Terminate when prompted for confirmation.
To terminate an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• terminate-instances (AWS CLI)
• ec2-terminate-instances (Amazon EC2 CLI)
• Stop-EC2Instance (AWS Tools for Windows PowerShell)
Enabling Termination Protection for an Instance
By default, you can terminate your instance using the Amazon EC2 console, command line interface, or
API. If you want to prevent your instance from being accidentally terminated using Amazon EC2, you can
enable termination protection for the instance. The DisableApiTermination attribute controls whether
the instance can be terminated using the console, CLI, or API. By default, termination protection is disabled
for your instance. You can set the value of this attribute when you launch the instance, while the instance
is running, or while the instance is stopped (for Amazon EBS-backed instances).
The DisableApiTermination attribute does not prevent you from terminating an instance by initiating
shutdown from the instance (using an operating system command for system shutdown) when the InstanceInitiatedShutdownBehavior attribute is set. For more information, see Changing the Instance
Initiated Shutdown Behavior (p. 149).
Instances that are part of an Auto Scaling group are not covered by termination protection. For more information, see Instance Termination Policy for Your Auto Scaling Group in the Auto Scaling Developer
Guide.
You can enable or disable termination protection using the AWS Management Console or the command
line.
To enable termination protection for an instance at launch time
1.
2.
On the dashboard of the Amazon EC2 console, click Launch Instance and follow the directions in
the wizard.
On the Configure Instance Details page, select the Enable termination protection check box.
To enable termination protection for a running or stopped instance
1.
Select the instance, click Actions, and then click Change Termination Protection.
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Changing the Shutdown Behavior
2.
Click Yes, Enable.
To disable termination protection for a running or stopped instance
1.
Select the instance, click Actions, and then click Change Termination Protection.
2.
Click Yes, Disable.
To enable or disable termination protection using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-instance-attribute (AWS CLI)
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Changing the Instance Initiated Shutdown Behavior
By default, when you initiate a shutdown from an Amazon EBS-backed instance (using a command such
as shutdown, halt, or poweroff), the instance stops.You can change this behavior using the InstanceInitiatedShutdownBehavior attribute for the instance so that it terminates instead.You can update this
attribute while the instance is running or stopped.
You can update the InstanceInitiatedShutdownBehavior attribute using the AWS Management
Console or the command line.
To change the shutdown behavior of an instance using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
Select the instance, click Actions, and then click Change Shutdown Behavior. The current behavior is already selected.
To change the behavior, select an option from the Shutdown behavior list, and then click Apply.
To change the shutdown behavior of an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-instance-attribute (AWS CLI)
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Preserving Amazon EBS Volumes on Instance Termination
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Preserving Amazon EBS Volumes on Instance
Termination
By default, we do the following:
• Preserve any volumes that you attach to a running instance even after the instance terminates
• Preserve any volumes that you attach to your instance at launch when you stop and restart an instance
• Delete the volumes that you attach to your instance at launch, including the root device volume, when
you terminate the instance
You can change this behavior using the DeleteOnTermination attribute for the volume. If the value of
this attribute is true, we delete the volume after the instance terminates; otherwise, we preserve the
volume. If the DeleteOnTermination attribute of a volume is false, the volume persists in its current
state. You can take a snapshot of the volume, and you can attach it to another instance.
If you detach a volume that you attached to your instance at launch, and then reattach it, we preserve it
even after the instance terminates. In other words, its DeleteOnTermination attribute is set to false.
You can see the value for the DeleteOnTermination attribute on the volumes attached to an instance
by looking at the instance's block device mapping. For more information, see Viewing the Amazon EBS
Volumes in an Instance Block Device Mapping (p. 423).
You can update the DeleteOnTermination attribute using the AWS Management Console or the
command line.
Changing the Root Volume to Persist Using the Console
Using the console, you can change the DeleteOnTermination attribute when you launch an instance.
To change this attribute for a running instance, you must use the command line.
To change the root volume of an instance to persist at launch using the console
1.
2.
3.
Open the Amazon EC2 console.
From the console dashboard, click Launch Instance.
On the Choose an Amazon Machine Image (AMI) page, choose an AMI and click Select.
4.
Follow the wizard to complete the Choose an Instance Type and Configure Instance Details
pages.
5.
6.
On the Add Storage page, deselect the Delete On Termination check box for the root volume.
Complete the remaining wizard pages, and then click Launch.
You can verify the setting by viewing details for the root device volume on the instance's details pane.
Next to Block devices, click the entry for the root device volume. By default, Delete on termination is
True. If you change the default behavior, Delete on termination is False.
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Preserving Amazon EBS Volumes on Instance Termination
Changing the Root Volume of a Running Instance to Persist
Using the Command Line
You can use one of the following commands to change the root device volume of a running instance to
persist. The root device is typically xvda. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-instance-attribute (AWS CLI)
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Example for AWS CLI
The following command preserves the root volume by setting its DeleteOnTermination attributes to
false.
C:\> aws ec2 modify-instance-attribute --instance-id i-5203422c --block-devicemappings "[{\"DeviceName\":\"xvda\",\"Ebs\":{\"DeleteOnTermination\":false}}]"
You can confirm that deleteOnTermination is false by using the describe-instances command and
looking for the BlockDeviceMappings entry for xvda in the command output.
Example for Amazon EC2 CLI
The following command preserves the root volume by setting its DeleteOnTermination attribute to
false.
C:\> ec2-modify-instance-attribute i-5203422c -b "xvda=::false"
Changing the Root Volume of an Instance to Persist at
Launch Using the Command Line
When you launch an instance, you can use one of the following commands to change the root device
volume to persist. The root device is typically xvda. For more information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
• run-instances (AWS CLI)
• ec2-run-instances (Amazon EC2 CLI)
• New-EC2Instance (AWS Tools for Windows PowerShell)
Example for AWS CLI
The following command preserves the root volume by setting its DeleteOnTermination attributes to
false.
C:\> aws ec2 run-instances --image-id ami-1a2b3c4d --block-device-mappings
"[{\"DeviceName\":\"xvda\",\"Ebs\":{\"DeleteOnTermination\":false}}]" other
parameters...
You can confirm that deleteOnTermination is false by using the describe-instances command and
looking for the BlockDeviceMappings entry for xvda in the command output.
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Preserving Amazon EBS Volumes on Instance Termination
Example for Amazon EC2 CLI
The following command preserves the root volume by setting its DeleteOnTermination attribute to
false.
C:\> ec2-run-instances ami-1a2b3c4d
-b "xvda=::false" other parameters... -v
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Using EC2Config
Configuring Your Windows
Instance
A Windows instance is a virtual server running Microsoft Windows Server in the cloud.
After you have successfully launched and logged into your instance, you can make changes to it so that
it's configured to meet the needs of a specific application. The following are some common tasks to help
you get started.
Tasks
• Configuring a Windows Instance Using the EC2Config Service (p. 153)
• Upgrading PV Drivers on Your Windows AMI (p. 169)
• Setting Passwords for Windows Instances (p. 178)
• Configuring a Secondary Private IP Address for Your Windows Instance in a VPC (p. 183)
• Setting the Time for a Windows Instance (p. 187)
Configuring a Windows Instance Using the
EC2Config Service
AWS Windows AMIs contain an additional service installed by Amazon Web Services, the EC2Config
service. Although optional, this service provides access to advanced features that aren't otherwise available.
This service runs in the LocalSystem account and performs tasks on the instance. For example, it can
send Windows event logs and IIS request logs to Amazon CloudWatch Logs. For more information about
how to configure EC2Config for use with CloudWatch Logs, see Ec2 Service Properties (p. 155). The
service binaries and additional files are contained in the %ProgramFiles%\Amazon\EC2ConfigService
directory.
The EC2Config service is started when the instance is booted. It performs tasks during initial instance
startup and each time you stop and start the instance. It can also perform tasks on demand. Some of
these tasks are automatically enabled, while others must be enabled manually. EC2Config uses settings
files to control its operation. You can update these settings files using either a graphical tool or by directly
editing XML files.
The EC2Config service runs Sysprep, a Microsoft tool that enables you to create a customized Windows
AMI that can be reused. For more information about Sysprep, see Sysprep Technical Reference.
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Overview of EC2Config Tasks
When EC2Config calls Sysprep, it uses the settings files in EC2ConfigService\Settings to determine
which operations to perform. You can edit these files indirectly using the Ec2 Service Properties dialog
box, or directly using an XML editor or a text editor. However, there are some advanced settings that
aren't available in the Ec2 Service Properties dialog box, so you must edit those entries directly.
If you create an AMI from an instance after updating its settings, the new settings are applied to any instance that's launched from the new AMI. For information about creating an AMI, see Creating an Amazon
EBS-Backed Windows AMI (p. 62).
Contents
• Overview of EC2Config Tasks (p. 154)
• Ec2 Service Properties (p. 155)
• EC2Config Settings Files (p. 160)
• Sending Logs to Amazon CloudWatch Logs (p. 163)
• Installing the Latest Version of EC2Config (p. 167)
• Stopping, Deleting, or Uninstalling EC2Config (p. 168)
Overview of EC2Config Tasks
EC2Config runs initial startup tasks when the instance is first started and then disables them. To run
these tasks again, you must explicitly enable them prior to shutting down the instance, or by running
Sysprep manually. These tasks are as follows:
•
•
•
•
Set a random, encrypted password for the administrator account.
Generate and install the host certificate used for Remote Desktop Connection.
Dynamically extend the operating system partition to include any unpartitioned space.
Execute the specified user data (and Cloud-Init, if it's installed).
EC2Config performs the following tasks every time the instance starts:
• Set the computer host name to match the private DNS name (this task is disabled by default and must
be enabled in order to run at instance start).
• Configure the key management server (KMS), check for Windows activation status, and activate Windows
as necessary.
• Format and mount any Amazon EBS volumes and instance store volumes, and map volume names
to drive letters.
• Write event log entries to the console to help with troubleshooting (this task is disabled by default and
must be enabled in order to run at instance start).
• Write to the console that Windows is ready.
• Add a custom route to the primary network adapter to enable the following IP addresses when multiple
NICs are attached: 169.254.169.250, 169.254.169.251, and 169.254.169.254. These addresses are
used by Windows Activation and when you access instance metadata.
EC2Config performs the following task every time a user logs in:
• Display wallpaper information to the desktop background.
While the instance is running, you can request that EC2Config perform the following task on demand:
• Run Sysprep and shut down the instance so that you can create an AMI from it. For more information,
see Creating an Amazon EBS-Backed Windows AMI (p. 62).
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Ec2 Service Properties
EC2Config creates a WMI object that you can use to detect when Windows is ready. You can get the
value of ConfigurationComplete as follows, and test whether it is true.
(Get-WmiObject -Namespace root\Amazon -Class EC2_ConfigService).Configuration
Complete
Ec2 Service Properties
The following procedure describes how to use the Ec2 Service Properties dialog box to enable or disable
settings.
To change settings using the Ec2 Service Properties dialog box
1.
2.
Launch and connect to your Windows instance.
From the Start menu, click All Programs, and then click EC2ConfigService Settings.
3.
On the General tab of the Ec2 Service Properties dialog box, you can enable or disable the following
settings.
Set Computer Name
If this setting is enabled (it is disabled by default), the host name is compared to the current internal IP address at each boot; if the host name and internal IP address do not match, the host
name is reset to contain the internal IP address and then the system reboots to pick up the new
host name. To set your own host name, or to prevent your existing host name from being modified,
do not enable this setting.
User Data
User data execution enables you to inject scripts into the instance metadata during the first
launch. From an instance, you can read user data at http://169.254.169.254/latest/user-data/.
This information remains static for the life of the instance, persisting when the instance is stopped
and started, until it is terminated.
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If you use a large script, we recommend that you use user data to download the script, and then
execute it.
For EC2Config to execute user data, you must enclose the lines of the script within one of the
following special tags:
<script></script>
Run any command that you can run at the cmd.exe prompt.
Example: <script>dir > c:\test.log</script>
<powershell></powershell>
Run any command that you can run at the Windows PowerShell prompt.
If you use an AMI that includes the AWS Tools for Windows PowerShell, you can also use
those cmdlets. If you specify an IAM role when you launch your instance, then you don't
need to specify credentials to the cmdlets, as applications that run on the instance can use
the role's credentials to access AWS resources such as Amazon S3 buckets.
Example: <powershell>Read-S3Object -BucketName myS3Bucket -Key myFolder/myFile.zip -File c:\destinationFile.zip</powershell>
You can separate the commands in a script using line breaks.
If EC2Config finds script or powershell tags, it saves the script to a batch or PowerShell
file in its /Scripts folder. It runs these files when the instance starts. If both script and
powershell tags are present, it runs the batch script first and the PowerShell script next, regardless of the order in which they appear.
The /Logs folder contains output from the standard output and standard error streams.
EC2Config expects the user data to be available in base64 encoding. If the user data is not
available in base64 encoding, EC2Config logs an error about being unable to find script or
powershell tags to execute. If your encoding is not correct, the following is an example that
sets the encoding using PowerShell.
$UserData = [System.Convert]::ToBase64String([System.Text.Encoding]::AS
CII.GetBytes($Script))
Initial Boot
By default, all Amazon AMIs have user data execution enabled for the initial boot. If you click
Shutdown with Sysprep in EC2Config, user data execution is enabled, regardless of the setting
of the User Data check box.
User data execution happens under the local administrator user only when a random password
is generated.This is because EC2Config generates the password and is aware of the credentials
briefly (prior to sending to the console). EC2Config doesn't store or track password changes, so
when you don't generate a random password, user data execution is performed by the
EC2Config service account.
Subsequent Boots
Because Amazon AMIs automatically disable user data execution after the initial boot, you must
do one of the following to make user data persist across reboots:
• Programmatically create a scheduled task to run at system start using schtasks.exe
/Create, and point the scheduled task to the user data script (or another script) at C:\Program
Files\Amazon\Ec2ConfigServer\Scripts\UserScript.ps1.
• Programmatically enable the user data plug-in in Config.xml using a script similar to the
following:
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<powershell>
$EC2SettingsFile="C:\Program Files\Amazon\Ec2ConfigService\Settings\Con
fig.xml"
$xml = [xml](get-content $EC2SettingsFile)
$xmlElement = $xml.get_DocumentElement()
$xmlElementToModify = $xmlElement.Plugins
foreach ($element in $xmlElementToModify.Plugin)
{
if ($element.name -eq "Ec2SetPassword")
{
$element.State="Enabled"
}
elseif ($element.name -eq "Ec2HandleUserData")
{
$element.State="Enabled"
}
}
$xml.Save($EC2SettingsFile)
</powershell>
• Starting with EC2Config version 2.1.10, you can use <persist>true</persist> to enable
the plug-in after user data execution.
<powershell>
insert script here
</powershell>
<persist>true</persist>
Event Log
Use this setting to display event log entries on the console during boot for easy monitoring and
debugging.
Click Settings to specify filters for the log entries sent to the console. By default, the three most
recent error entries from the system event log are sent to the console.
CloudWatch Logs
Starting with EC2Config version 2.2.5 (version 2.2.6 or later is recommended), you can export
all Windows Server messages in the System log, Security log, Application log, and IIS log to
CloudWatch Logs and monitor them using CloudWatch metrics. For more information, see
Monitoring System, Application, and Custom Log Files in the Amazon CloudWatch Developer
Guide.
1.
2.
Select Enable CloudWatch integration, and then click OK.
Edit the \Amazon\Ec2ConfigService\Settings\AWS.EC2.Windows.CloudWatch.json
file and configure the types of logs you want to send to CloudWatch Logs. For more information, see Sending Logs to Amazon CloudWatch Logs (p. 163).
Wallpaper Information
Use this setting to display system information on the desktop background. The following is an
example of the information displayed on the desktop background.
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The information displayed on the desktop background is controlled by the settings file EC2ConfigService\Settings\WallpaperSettings.xml.
4.
Click the Storage tab. You can enable or disable the following settings.
Root Volume
This setting dynamically extends Disk 0/Volume 0 to include any unpartitioned space. This can
be useful when the instance is booted from a root device volume that has a custom size.
Initialize Drives
This setting formats and mounts all instance store volumes attached to the instance during start.
Drive Letter Mapping
The system maps the volumes attached to an instance to drive letters. For Amazon EBS volumes,
the default is to assign drive letters going from D: to Z:. For instance store volumes, the default
depends on the driver. Citrix PV drivers assign instance store volumes drive letters going from
Z: to A:. Red Hat drivers assign instance store volumes drive letters going from D: to Z:.
To choose the drive letters for your volumes, click Mappings. In the DriveLetterSetting dialog
box, specify the Volume Name and Drive Letter values for each volume, and then click OK.
We recommend that you select drive letters that avoid conflicts with drive letters that are likely
to be in use, such as drive letters in the middle of the alphabet.
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Ec2 Service Properties
After you specify a drive letter mapping and attach a volume with same label as one of the volume
names that you specified, EC2Config automatically assigns your specified drive letter to that
volume. However, the drive letter mapping fails if the drive letter is already in use. Note that
EC2Config doesn't change the drive letters of volumes that were already mounted when you
specified the drive letter mapping.
5.
To save your settings and continue working on them later, click OK to close the Ec2 Service Properties dialog box.
Otherwise, if you have finished customizing your instance and are ready to create your AMI from this
instance, click the Image tab.
Select an option for the Administrator password, and then click Shutdown with Sysprep or Shutdown
without Sysprep. EC2Config edits the settings files based on the password option that you selected.
• Random—EC2Config generates a password, encrypts it with user's key, and displays the encrypted
password to the console. We disable this setting after the first launch so that this password persists
if the instance is rebooted or stopped and started.
• Specify—The password is stored in the Sysprep answer file in unencrypted form (clear text). When
Sysprep runs next, it sets the Administrator password. If you shut down now, the password is set
immediately. When the service starts again, the Administrator password is removed. It's important
to remember this password, as you can't retrieve it later.
• Keep Existing—The existing password for the Administrator account doesn't change when Sysprep
is run or EC2Config is restarted. It's important to remember this password, as you can't retrieve it
later.
When you are asked to confirm that you want to run Sysprep and shut down the instance, click Yes.
You'll notice that EC2Config runs Sysprep. Next, you are logged off the instance, and the instance
is shut down. If you check the Instances page in the Amazon EC2 console, the instance state
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changes from running to stopping, and then finally to stopped. At this point, it's safe to create
an AMI from this instance.
You can manually invoke the Sysprep tool from the command line using the following command:
C:\> %ProgramFiles%\Amazon\Ec2ConfigService\ec2config.exe -sysprep
However, you must be very careful that the XML file options specified in the Ec2ConfigService\Settings folder are correct; otherwise, you might not be able to connect to the instance. For more information about the settings files, see EC2Config Settings Files (p. 160). For an example of configuring
and then running Sysprep from the command line, see Ec2ConfigService\Scripts\InstallUpdates.ps1.
EC2Config Settings Files
The settings files control the operation of the EC2Config service. These files are located in the Ec2ConfigService\Settings directory:
• ActivationSettings.xml—Controls product activation using a key management server (KMS).
• BundleConfig.xml—Controls how EC2Config prepares an instance for AMI creation.
• Config.xml—Controls the primary settings.
• DriveLetterConfig.xml—Controls drive letter mappings.
• EventLogConfig.xml—Controls the event log information that's displayed on the console while the
instance is booting.
• WallpaperSettings.xml—Controls the information that's displayed on the desktop background.
ActivationSettings.xml
This file contains settings that control product activation. When Windows boots, the EC2Config service
checks whether Windows is already activated. If Windows is not already activated, it attempts to activate
Windows by searching for the specified KMS server.
• SetAutodiscover—Indicates whether to detect a KMS automatically.
• TargetKMSServer—Stores the private IP address of a KMS. The KMS must be in the same region
as your instance.
• DiscoverFromZone—Discovers the KMS server from the specified DNS zone.
• ReadFromUserData—Gets the KMS server from UserData.
• LegacySearchZones—Discovers the KMS server from the specified DNS zone.
• DoActivate—Attempts activation using the specified settings in the section. This value can be true
or false.
• LogResultToConsole—Displays the result to the console.
BundleConfig.xml
This file contains settings that control how EC2Config prepares an instance for AMI creation.
• AutoSysprep—Indicates whether to use Sysprep automatically. Change the value to Yes to use
Sysprep.
• SetRDPCertificate—Sets a self-signed certificate to the Remote Desktop server running on a
Windows 2003 instance. This enables you to securely RDP into the instances. Change the value to
Yes if the new instances should have the certificate.
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This setting is not used with Windows Server 2008 or Windows Server 2012 instances because they
can generate their own certificates.
• SetPasswordAfterSysprep—Sets a random password on a newly launched instance, encrypts it
with the user launch key, and outputs the encrypted password to the console. Change the value of this
setting to No if the new instances should not be set to a random encrypted password.
Config.xml
Plug-ins
• Ec2SetPassword—Generates a random encrypted password each time you launch an instance. This
feature is disabled by default after the first launch so that reboots of this instance don't change a
password set by the user. Change this setting to Enabled to continue to generate passwords each
time you launch an instance.
•
•
•
•
•
•
This setting is important if you are planning to create an AMI from your instance.
Ec2SetComputerName—Sets the host name of the instance to a unique name based on the IP address
of the instance and reboots the instance. To set your own host name, or prevent your existing host
name from being modified, you must disable this setting.
Ec2InitializeDrives—Initializes and formats all instance store volumes during startup. This feature
is enabled by default and initializes and mounts the instance store volumes as drives D:, E:, and so
on. For more information about instance store volumes, see Amazon EC2 Instance Store (p. 407).
Ec2EventLog—Displays event log entries in the console. By default, the three most recent error entries
from the system event log are displayed. To specify the event log entries to display, edit the EventLogConfig.xml file located in the EC2ConfigService\Settings directory. For information about the
settings in this file, see Eventlog Key in the MSDN Library.
Ec2ConfigureRDP—Sets up a self-signed certificate on the instance, so users can securely access
the instance using Remote Desktop. This feature is disabled on Windows Server 2008 and Windows
Server 2012 instances because they can generate their own certificates.
Ec2OutputRDPCert—Displays the Remote Desktop certificate information to the console so that the
user can verify it against the thumbprint.
Ec2SetDriveLetter—Sets the drive letters of the mounted volumes based on user-defined settings.
By default, when an Amazon EBS volume is attached to an instance, it can be mounted using the drive
letter on the instance. To specify your drive letter mappings, edit the DriveLetterConfig.xml file
located in the EC2ConfigService\Settings directory.
• Ec2WindowsActivate—Indicates whether to search through the DNS Suffix List for appropriate KMS
entries. When the appropriate KMS entries are found, the plug-in sets your activation server to the first
server to respond to the request successfully. Starting with Windows Server 2008 R2, Windows Server
is able to search the suffix list automatically. Otherwise, the plug-in performs this search manually.
To modify the KMS settings, edit the ActivationSettings.xml file located in the EC2ConfigService\Settings directory.
• Ec2DynamicBootVolumeSize—Extends Disk 0/Volume 0 to include any unpartitioned space.
• Ec2HandleUserData—Creates and executes scripts created by the user on the first launch of an instance after Sysprep is run. Commands wrapped in script tags are saved to a batch file, and commands
wrapped in PowerShell tags are saved to a .ps1 file.
Global Settings
• ManageShutdown—Ensures that instances launched from instance store-backed AMIs do not terminate
while running Sysprep.
• SetDnsSuffixList—Sets the DNS suffix of the network adapter for Amazon EC2. This allows DNS
resolution of servers running in Amazon EC2 without providing the fully qualified domain name.
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• WaitForMetaDataAvailable—Ensures that the EC2Config service will wait for metadata to be accessible and the network available before continuing with the boot. This check ensures that EC2Config
can obtain information from metadata for activation and other plug-ins.
• ShouldAddRoutes—Adds a custom route to the primary network adapter to enable the following IP
addresses when multiple NICs are attached: 169.254.169.250, 169.254.169.251, and 169.254.169.254.
These addresses are used by Windows Activation and when you access instance metadata.
• RemoveCredentialsfromSyspreponStartup—Removes the administrator password from Sysprep.xml the next time the service starts. To ensure that this password persists, edit this setting.
DriveLetterConfig.xml
This file contains settings that control drive letter mappings. By default, a volume can be mapped to any
available drive letter. You can mount a volume to a particular drive letter as follows.
<?xml version="1.0" standalone="yes"?>
<DriveLetterMapping>
<Mapping>
<VolumeName></VolumeName>
<DriveLetter></DriveLetter>
</Mapping>
. . .
<Mapping>
<VolumeName></VolumeName>
<DriveLetter></DriveLetter>
</Mapping>
</DriveLetterMapping>
• VolumeName—The volume label. For example, My Volume. To specify a mapping for an instance
storage volume, use the label Temporary Storage X, where X is a number from 0 to 25.
• DriveLetter—The drive letter. For example, M:. The mapping fails if the drive letter is already in use.
EventLogConfig.xml
This file contains settings that control the event log information that's displayed on the console while the
instance is booting. By default, we display the three most recent error entries from the System event log.
• Category—The event log key to monitor.
• ErrorType—The event type (for example, Error, Warning, Information.)
• NumEntries—The number of events stored for this category.
• LastMessageTime—To prevent the same message from being pushed repeatedly, the service updates
this value every time it pushes a message.
• AppName—The event source or application that logged the event.
WallpaperSettings.xml
This file contains settings that control the information that's displayed on the desktop background. The
following information is displayed by default.
• Hostname—Displays the computer name.
• Instance ID—Displays the ID of the instance.
• Public IP Address—Displays the public IP address of the instance.
• Private IP Address—Displays the private IP address of the instance.
• Availability Zone—Displays the Availability Zone in which the instance is running.
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• Instance Size—Displays the type of instance.
• Architecture—Displays the setting of the PROCESSOR_ARCHITECTURE environment variable.
• AddMemory—Displays the system memory, in GB.
• AddECU—Displays the processing power, in ECU.
• AddIO—Displays the I/O performance.
You can remove any of the information that's displayed by default by deleting its entry. You can add additional instance metadata to display as follows.
<WallpaperInformation>
<name>display_name</name>
<source>metadata</source>
<identifier>meta-data/path</identifier>
</WallpaperInformation>
You can add additional System environment variables to display as follows.
<WallpaperInformation>
<name>display_name</name>
<source>EnvironmentVariable</source>
<identifier>variable-name</identifier>
</WallpaperInformation>
Sending Logs to Amazon CloudWatch Logs
Starting with EC2Config version 2.2.5 (version 2.2.6 or later is recommended), you can export the following
types of Microsoft Windows logs to CloudWatch Logs:
•
•
•
•
Application
Security
System
IIS
To set up EC2Config to send data to CloudWatch Logs, complete the following steps:
Topics
• Step1: Configure the credentials, region, log group, and log stream (p. 163)
• Step 2: Configure the logs to send to CloudWatch Logs (p. 164)
• Step 3: Configure the flow control (p. 166)
• Troubleshooting CloudWatch Logs in EC2Config (p. 166)
Step1: Configure the credentials, region, log group, and log
stream
To set the credentials, region, log group, and log stream for CloudWatch Logs
1.
Open the \Amazon\Ec2ConfigService\Settings\AWS.EC2.Windows.CloudWatch.json file, and
locate the CloudWatchLogs section.
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{
"Id": "CloudWatchLogs",
"FullName": "AWS.EC2.Windows.CloudWatch.CloudWatchLogsOut
put,AWS.EC2.Windows.CloudWatch",
"Parameters": {
"AccessKey": "",
"SecretKey": "",
"Region": "us-east-1",
"LogGroup": "Default-Log-Group",
"LogStream": "{instance_id}"
}
}
2.
3.
4.
5.
6.
In the AccessKey parameter, enter your access key ID. This is not necessary if you launched your
instance using an IAM role. For more information, see IAM Roles for Amazon EC2 (p. 306).
In the SecretKey parameter, enter your secret access key. This is not necessary if you launched
your instance using an IAM role. For more information, see IAM Roles for Amazon EC2 (p. 306).
In the Region parameter, enter the region where you want EC2Config to send log data. You can
specify us-east-1, us-west-2, or eu-west-1.
In the LogGroup parameter, enter the name for your log group. This is the same name that will be
displayed on the Log Groups screen in the CloudWatch console.
In the LogStream parameter, enter the destination log stream. If you use {instance_id}, the default,
EC2Config uses the instance ID of this instance as the log stream name.
If you enter a log stream name that doesn't already exist, CloudWatch Logs automatically creates it
for you. You can use a literal string or predefined variables ({instance_id}, {hostname}, {ip_address}), or combination of both to define a log stream name.
The log stream name appears on the Log Groups > Streams for screen in the CloudWatch console.
Step 2: Configure the logs to send to CloudWatch Logs
To send Windows application event log data to CloudWatch Logs
1.
Locate the ApplicationEventLog section.
{
"Id": "ApplicationEventLog",
"FullName": "AWS.EC2.Windows.CloudWatch.EventLog.EventLogInputCompon
ent,AWS.EC2.Windows.CloudWatch",
"Parameters": {
"LogName": "Application",
"Levels": "1"
}
},
2.
In the Levels parameter, enter one of the following values:
1 - Only error messages uploaded.
2 - Only warning messages uploaded.
4 - Only information messages uploaded.
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You can add values together to include more than one type of message. For example, 3 means that
error messages (1) and warning messages (2) get uploaded. A value of 7 means that error messages
(1), warning messages (2), and information messages (4) get uploaded.
To send security log data to CloudWatch Logs
1.
Locate the SecurityEventLog section.
{
"Id": "SecurityEventLog",
"FullName": "AWS.EC2.Windows.CloudWatch.EventLog.EventLogInputCom
ponent,AWS.EC2.Windows.CloudWatch",
"Parameters": {
"LogName": "Security",
"Levels": "7"
}
},
2.
In the Levels parameter, enter one of the following values:
1 - Only error messages uploaded.
2 - Only warning messages uploaded.
4 - Only information messages uploaded.
You can add values together to include more than one type of message. For example, 3 means that
error messages (1) and warning messages (2) get uploaded. A value of 7 means that error messages
(1), warning messages (2), and information messages (4) get uploaded.
To send System Event Log data to CloudWatch Logs
1.
Locate the SystemEventLog section.
{
"Id": "SystemEventLog",
"FullName": "AWS.EC2.Windows.CloudWatch.EventLog.EventLogInputCompon
ent,AWS.EC2.Windows.CloudWatch",
"Parameters": {
"LogName": "System",
"Levels": "7"
}
},
2.
In the Levels parameter, enter one of the following values:
1 - Only error messages uploaded.
2 - Only warning messages uploaded.
4 - Only information messages uploaded.
You can add values together to include more than one type of message. For example, 3 means that
error messages (1) and warning messages (2) get uploaded. A value of 7 means that error messages
(1), warning messages (2), and information messages (4) get uploaded.
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Sending Logs to Amazon CloudWatch Logs
To send IIS log data to CloudWatch Logs
1.
Locate the IISLog section.
{
"Id": "IISLog",
"FullName": "AWS.EC2.Windows.CloudWatch.IisLog.IisLogInputCompon
ent,AWS.EC2.Windows.CloudWatch",
"Parameters": {
"LogDirectoryPath": "C:\\inetpub\\logs\\LogFiles\\W3SVC1"
}
2.
In the LogDirectoryPath parameter, enter the folder where IIS logs are stored for an individual site
(e.g., C:\\inetpub\\logs\\LogFiles\\W3SVCn).
Step 3: Configure the flow control
Each input component may have a corresponding output component in the flow definition. For each source
above, you can define multiple components with different IDs but the same FullName value. For example,
if you have two custom logs to upload, you can create two custom log components. Then you can configure
how each log is uploaded. You can upload logs to the same LogGroup and Stream or to a different
LogGroup and Stream.
1.
Locate the Flows section.
"Flows": {
"Flows": [
"CloudWatchLogs",
"(SystemEventLog),CloudWatchLogs1",
"CustomLogs, CloudWatchLogs2",
"ApplicationEventLog,(CloudWatchLogs1, CloudWatchLogs2)"
]
2.
In the Flows parameter, enter each component and log that you want to upload.
Troubleshooting CloudWatch Logs in EC2Config
I cannot see logs in the Amazon CloudWatch console.
Please verify that you are using EC2Config version 2.2.6 or later. If you are still using EC2Config
version 2.2.5, use the following steps to solve the issue:
1.
2.
3.
In the Services Microsoft Management Console (MMC) snap-in, restart the EC2Config service.
To open the Services snap-in, click the Start menu and then in the Run box, type services.msc.
Sign in to the AWS Management Console and open the Amazon CloudWatch console at https://
console.aws.amazon.com/cloudwatch/.
On the navigation bar, select the appropriate region.
4.
5.
In the navigation pane, click Logs.
In the contents pane, in the Expire Events After column, click the retention setting for the log
group you just created.
6.
In the Edit Retention dialog box, in the New Retention list, select 10 years (3653 days), and
then click OK.
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Note
You can also set log retention (in days) using the following Windows PowerShell command:
Write-CWLRetentionPolicy-LogGroupName Default-Log-Group -Reten
tionInDays 3653
The Enable CloudWatch Logs integration checkbox won't stay selected after I click OK and then
reopen EC2Config.
This issue might occur if you've performed an upgrade from an earlier version of EC2Config to version
2.2.5. To resolve this issue, install version 2.2.6 or later.
I see errors like Log events cannot be more than 2 hours in the future or InvalidParameterException.
This error might occur if you are using EC2Config version 2.2.5 and your instance's time zone falls
between UTC-12:00 and UTC-02:00. To resolve this issue, install version 2.2.6 or later.
Installing the Latest Version of EC2Config
By default, the EC2Config service is included in each AWS Windows AMI. When we release an updated
version, we update all AWS Windows AMIs with the latest version. However, you need to update your
own Windows AMIs and instances with the latest version.
To find notifications of updates to EC2Config, go to the Amazon EC2 forum. For more information about
the changes in each version, see the What's New section on the download page.
To verify the version of EC2Config included with your Windows AMI
1.
2.
3.
Launch an instance from your AMI and connect to it.
In Control Panel, select Programs and Features.
In the list of installed programs, look for Ec2ConfigService. Its version number appears in the
Version column.
To install the latest version of EC2Config on your instance
1.
(Optional) If you have changed any settings, note these changes, as you'll need to restore them after
installing the latest version of EC2Config.
2.
3.
4.
5.
Go to Amazon Windows EC2Config Service.
Click Download.
Download and unzip the file.
Run EC2Install.exe. For a complete list of options, run EC2Install with the /? option. Note the
following:
• By default, the setup replaces your settings files with default settings files during installation and
restarts the EC2Config service when the installation is completed. To keep the custom settings
that you saved in step 1, run EC2Install with the /norestart option, restore your settings, and
then restart the EC2Config service manually.
• By default, the setup displays prompts. To run the command with no prompts, use the /quiet
option.
6.
Connect to your instance, run the Services administrative tool, and verify that the status of EC2Config
service is Started.
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Stopping, Deleting, or Uninstalling EC2Config
If you can't connect to your instance, it's possible that updating its version of EC2Config will solve the issue.
If your instance is an Amazon EBS-backed instance, you can use the following procedure to update
EC2Config even though you can't connect to your instance.
To update EC2Config on an Amazon EBS-backed Windows instance that you can't connect
to
1.
Stop the affected instance and detach its root volume.
2.
Launch a temporary t2.micro instance in the same Availability Zone as the affected instance using
an AMI for Windows Server 2003. (If you use a later version of Windows Server, you won't be able
to boot the original instance when you restore its root volume.) To find an AMI for Windows Server
2003, search for public Windows AMIs with the name Windows_Server-2003-R2_SP2.
3.
Attach the root volume from the affected instance to this temporary instance. Connect to the temporary
instance, open the Disk Management utility, and bring the drive online.
4.
Download the latest EC2Config from Amazon Windows EC2Config Service. Extract the files from
the .zip file to the Temp directory on the drive you attached.
5.
Open Regedit and select HKEY_LOCAL_MACHINE. From the File menu, click Load Hive. Select
the drive, open the file Windows\System32\config\SOFTWARE, and specify a key name when
prompted (you can use any name).
Select the key you just loaded and navigate to Microsoft\Windows\CurrentVersion. Select
the RunOnce key. (If this key doesn't exist, right-click CurrentVersion, point to New, select Key,
and name the key RunOnce.) Right-click, point to New, and select String Value. Enter Ec2Install
as the name and C:\Temp\Ec2Install.exe /quiet as the data.
6.
7.
8.
9.
Select the key again, and from the File menu, click Unload Hive.
Open the Disk Management utility and bring the drive offline. Detach the volume from the temporary
instance. You can terminate the temporary instance if you have no further use for it.
Restore the root volume of the affected instance by attaching it as /dev/sda1.
10. Start the instance.
11. After the instance starts, check the system log and verify that you see the message Windows is
ready to use.
Stopping, Deleting, or Uninstalling EC2Config
You can manage the EC2Config service just as you would any other service.
To apply updated settings to your instance, you can stop and restart the service. If you're manually installing
EC2Config, you must stop the service first.
To stop the EC2Config service
1.
2.
Launch and connect to your Windows instance.
On the Start menu, point to Administrative Tools, and then click Services.
3.
In the list of services, right-click EC2Config, and select Stop.
If you don't need to update the configuration settings or create your own AMI, you can delete the service.
Deleting a service removes its registry subkey.
To delete the EC2Config service
1.
2.
Start a command prompt window.
Run the following command:
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C:\> sc delete ec2config
If you don't need to update the configuration settings or create your own AMI, you can uninstall
EC2Config. Uninstalling a service removes the files, the registry subkey, and any shortcuts to the service.
To uninstall EC2Config
1.
2.
Launch and connect to your Windows instance.
On the Start menu, click Control Panel.
3.
4.
Double-click Programs and Features.
On the list of programs, select EC2ConfigService, and click Uninstall .
Upgrading PV Drivers on Your Windows AMI
Amazon Windows AMIs contain a set of drivers to permit access to Xen virtualized hardware. These
drivers are used by Amazon EC2 to map instance store and Amazon EBS volumes to their devices.
If your Windows instance is launched from a Windows Server 2012 R2 AMI, it uses AWS PV drivers. If
your Windows instance uses RedHat drivers, you can upgrade to Citrix drivers. If you are already using
Citrix drivers, you can upgrade the Citrix Xen guest agent service. To verify which driver your Windows
instance uses, open Network Connections in Control Panel and view the Local Area Connection.
Check whether the driver is one of the following:
• AWS PV Network Device
• Citrix PV Ethernet Adapter
• RedHat PV NIC Driver
Alternatively, you can check the output from the pnputil -e command.
Contents
• Xen Drivers (p. 169)
• Upgrading PV Drivers on Your Windows Server 2008 and 2008 R2 Instances (p. 171)
• Upgrading Your Citrix Xen Guest Agent Service (p. 173)
• Upgrading PV Drivers on Your Windows Server 2003 Instance (p. 174)
• Troubleshooting (p. 175)
Xen Drivers
AWS Windows AMIs contain a set of drivers to permit access to Xen virtualized hardware. These drivers
are used by Amazon EC2 to map instance store and Amazon EBS volumes to their devices. The particular Xen driver on your instance depends on when its AMI was created.
The following table shows key differences between the different drivers.
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Xen Drivers
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AWS PV Drivers
Windows Server 2012 R2 AMIs include AWS PV drivers. The AWS PV drivers are stored in the %ProgramFiles%\Amazon\Xentools directory. This directory also contains public symbols and a command
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and 2008 R2 Instances
line tool, xenstore-client.exe, that enables you to access entries in XenStore. For example, the
following PowerShell command returns the current time from the Hypervisor:
[DateTime]::FromFileTimeUTC((gwmi -n root\wmi -cl AWSXenStoreBase).XenTime).To
String("hh:mm:ss")
11:17:00
The AWS PV driver components are listed in the Windows registry under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services. These driver components are as follows: XENBUS, xeniface,
xennet, xenvbd, and xenvif.
AWS PV also has a driver component named LiteAgent, which runs as a Windows service. It handles
tasks such as shutdown and restart events from the API.You can access and manage services by running
Services.msc from the command line.
Citrix PV Drivers
The Citrix drivers are stored in the %ProgramFiles%\Citrix\XenTools (32-bit instances) or %ProgramFiles(x86)%\Citrix\XenTools (64-bit instances) directory.
The Citrix driver components are listed in the Windows registry under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services. These driver components are as follows: xenevtchn, xeniface,
xennet, Xennet6, xensvc, xenvbd, and xenvif.
Citrix also has a driver component named XenGuestAgent, which runs as a Windows service. It handles
tasks such as time synchronization at boot (Windows Server 2003 only), and shutdown and restart events
from the API. You can access and manage services by running Services.msc from the command line.
If you are encountering networking errors while performing certain workloads, you may need to disable
the TCP offloading feature for the Citrix PV driver. For more information, see TCP Offloading (p. 176).
RedHat PV Drivers
The source files for the RedHat drivers are in the %ProgramFiles%\RedHat (32-bit instances) or
%ProgramFiles(x86)%\RedHat (64-bit instances) directory. The two drivers are rhelnet, the RedHat
Paravirtualized network driver, and rhelscsi, the RedHat SCSI miniport driver.
For more information about upgrading your RedHat drivers on an existing AMI to Citrix drivers, see Upgrading PV Drivers on Your Windows AMI (p. 169).
Upgrading PV Drivers on Your Windows Server
2008 and 2008 R2 Instances
Before you start upgrading your RedHat drivers to Citrix drivers, make sure you do the following:
• Install the latest version of EC2Config by going to Amazon Windows EC2Config Service. For more information about the EC2Config service, see Configuring a Windows Instance Using the EC2Config
Service (p. 153).
• Back up your important information on the instance, or create an AMI from the instance. For more information about creating an AMI, see Creating an Amazon EBS-Backed Windows AMI (p. 62). If you
create an AMI, make sure you do the following:
• Do not enable the Sysprep tool in the EC2Config service.
• Write down your password.
• Set your Ethernet adapter to DHCP.
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and 2008 R2 Instances
To upgrade a Windows Server 2008 or Windows Server 2008 R2 AMI
1.
Connect to your instance and log in as the local administrator. For more information about connecting
to your instance, see Connecting to Your Windows Instance Using RDP (p. 139).
2.
In your instance, download the Citrix upgrade package by going to Amazon EC2 Windows Paravirtual Driver Upgrade Script.
Extract the contents of the upgrade package to a location of your choice.
Double-click the Upgrade.bat file. If you get a security warning, click Run.
3.
4.
5.
6.
In the Upgrade Drivers dialog box, review the information and click Yes if you are ready to start the
upgrade.
In the Red Hat Paravirtualized Xen Drivers for Windows ® uninstaller dialog box, click Yes to
remove the RedHat software. Your instance will be rebooted.
Note
If you do not see the uninstaller dialog box, click Red Hat Paravirtualiz… in the Windows
taskbar.
7.
Check that the instance has rebooted and is ready to be used.
a.
b.
c.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
On the Instances page, right-click your instance and select Get System Log.
The upgrade operations should have restarted the server 3 or 4 times. You can see this in the
log file by the number of times Windows is Ready to use is displayed.
8. Connect to your instance and log in as the local administrator.
9. Close the Red Hat Paravirtualized Xen Drivers for Windows ® uninstaller dialog box.
10. Confirm that the installation is complete. Navigate to the Citrix-WIN_PV folder that you extracted
earlier, open the PVUpgrade.log file, and then check for the text INSTALLATION IS COMPLETE.
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Upgrading Your Citrix Xen Guest Agent Service
If you are using Citrix drivers on your Windows server, you can upgrade the Citrix Xen guest agent service.
This Windows service handles tasks such as time synchronization at boot, as well as shutdown and restart
events from the API. You can run this upgrade package on any version of Windows Server, including
Windows Server 2012.
Before you start upgrading your drivers, make sure you back up your important information on the instance,
or create an AMI from the instance. For more information about creating an AMI, see Creating an Amazon
EBS-Backed Windows AMI (p. 62). If you create an AMI, make sure you do the following:
• Do not enable the Sysprep tool in the EC2Config service.
• Write down your password.
• Set your Ethernet adapter to DHCP.
To upgrade your Citrix Xen guest agent service
1.
2.
Connect to your instance and log in as the local administrator. For more information about connecting
to your instance, see Connecting to Your Windows Instance Using RDP (p. 139).
In your instance, download the Citrix upgrade package by going to Amazon EC2 Windows Paravirtual Driver Upgrade Script.
3.
Extract the contents of the upgrade package to a location of your choice.
4.
5.
Double-click the Upgrade.bat file. If you get a security warning, click Run.
In the Upgrade Drivers dialog box, review the information and click Yes if you are ready to start the
upgrade.
When the upgrade is complete, the PVUpgrade.log file will open and contain the text UPGRADE
IS COMPLETE.
6.
7.
Reboot your instance.
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Instance
Upgrading PV Drivers on Your Windows Server
2003 Instance
Before you start upgrading your RedHat drivers to Citrix drivers, make sure you do the following:
• Back up your important information on the instance, or create an AMI from the instance. For more information about creating an AMI, see Creating an Amazon EBS-Backed Windows AMI (p. 62). If you
create an AMI, make sure you do the following:
• Do not enable the Sysprep tool in the EC2Config service.
• Write down your password.
• Set your Ethernet adapter to DHCP.
• Install the latest version of EC2Config by going to Amazon Windows EC2Config Service. For more information about the EC2Config service, see Configuring a Windows Instance Using the EC2Config
Service (p. 153).
To upgrade a Windows Server 2003 AMI
1.
2.
3.
4.
5.
6.
Connect to your instance and log in as the local administrator. For more information about connecting
to your instance, see Connecting to Your Windows Instance Using RDP (p. 139).
In your instance, download the Citrix upgrade package by going to Amazon EC2 Windows Paravirtual Driver Upgrade Script.
Extract the contents of the upgrade package to a location of your choice.
Double-click the Upgrade.bat file. If you get a security warning, click Run.
In the Upgrade Drivers dialog box, review the information and click Yes if you're ready to start the
upgrade.
In the Red Hat Paravirtualized Xen Drivers for Windows ® uninstaller dialog box, click Yes to
remove the RedHat software. Your instance will be rebooted.
Note
If you do not see the uninstaller dialog box, click Red Hat Paravirtualiz… in the Windows
taskbar.
7.
Check that the instance has been rebooted and is ready to be used.
a.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
b.
c.
On the Instances page, right-click your instance and select Get System Log.
Check the end of the log message. It should read Windows is Ready to use.
8.
Connect to your instance and log in as the local administrator. The upgrade will continue by opening
four applications: PowerShell, RedHat uninstaller, PVUpgrade.log and the Windows Device Manager.
9.
Uninstall the PCI BUS.
a.
In the Device Manager window, expand System devices, right-click PCI bus and click Uninstall.
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b.
c.
d.
When prompted, click OK.
In the System Settings Change dialog, click No as you do not want to restart your instance
immediately.
Close Device Manager. The upgrade script reboots your instance.
10. Check that the instance is ready by repeating the procedure in step 7. After you've confirmed it is
ready, log in as the administrator.
11. Confirm that the installation is complete. Navigate to the Citrix-WIN_PV folder that you extracted
earlier, open the PVUpgrade.log file, and then check for the text INSTALLATION IS COMPLETE.
Troubleshooting
This topic addresses issues that you might encounter with the Citrix PV driver.
Contents
• TCP Offloading (p. 176)
• Time Synchronization (p. 178)
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Troubleshooting
TCP Offloading
By default, TCP offloading is enabled for the Citrix PV drivers in Windows AMIs. If you encounter transportlevel errors or packet transmission errors (as visible on the Windows Performance Monitor)—for example,
when you're running certain SQL workloads—you may need to disable this feature.
Note
Disabling TCP offloading may reduce the network performance of your instance.
To disable TCP offloading for Windows Server 2012 and 2008
1.
Connect to your instance and log in as the local administrator.
2.
3.
If you're using Windows Server 2012, press Ctrl+Esc to access the Start screen, and then click
Control Panel. If you're using Windows Server 2008, click Start and select Control Panel.
Click Network and Internet, then Network and Sharing Center.
4.
5.
Click Change adapter settings.
Right-click Citrix PV Ethernet Adapter #0 and select Properties.
6.
In the Local Area Connection Properties dialog box, click Configure to open the Citrix PV Ethernet
Adapter #0 Properties dialog box.
On the Advanced tab, disable each of the following properties by selecting them in the Property
list, and selecting Disabled from the Value list:
7.
•
•
•
•
•
IPv4 Checksum Offload
Large Receive Offload (IPv4)
Large Send Offload Version 2 (IPv4)
TCP Checksum Offload (IPv4)
UDP Checksum Offload (IPv4)
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8.
9.
Click OK.
Run the following commands from a Command Prompt window.
C:\>
C:\>
C:\>
C:\>
netsh
netsh
netsh
netsh
int
int
int
int
ip set global taskoffload=disabled
tcp set global chimney=disabled
tcp set global rss=disabled
tcp set global netdma=disabled
10. Reboot the instance.
To disable TCP offloading for Windows Server 2003
1.
2.
3.
4.
5.
Connect to your instance and log in as the local administrator.
Click Start, and select Control Panel, then Network Connections, and then Local Area Connection
3.
Click Properties.
In the Local Area Connection 3 dialog box, click Configure... to open the Citrix PV Ethernet Adapter
#0 Properties dialog box.
On the Advanced tab, disable each of the following properties by selecting them in the Property
list, and selecting Disabled from the Value list:
• IPv4 Checksum Offload
• Large Send Offload Version 1 (IPv4)
• TCP Checksum Offload (IPv4)
• UDP Checksum Offload (IPv4)
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6.
7.
Click OK.
Run the following commands from a Command Prompt window.
C:\>
C:\>
C:\>
C:\>
8.
netsh
netsh
netsh
netsh
int
int
int
int
ip set global taskoffload=disabled
tcp set global chimney=disabled
tcp set global rss=disabled
tcp set global netdma=disabled
Reboot the instance.
Time Synchronization
Prior to the release of the 2013.02.13 Windows AMI, the Citrix Xen guest agent could set the system time
incorrectly. This can cause your DHCP lease to expire. If you have issues connecting to your instance,
you might need to update the agent.
To determine whether you have the updated Citrix Xen guest agent, check whether the C:\Program
Files\Citrix\XenGuestAgent.exe file is from March 2013. If the date on this file is earlier than that,
update the Citrix Xen guest agent service. For more information, see Upgrading Your Citrix Xen Guest
Agent Service (p. 173).
Setting Passwords for Windows Instances
When you connect to a Windows instance, you must specify a user account that has permission to access
the instance, along with the password for the account. The first time that you connect to your instance,
specify the Administrator account and the default password. This default password is automatically generated by the EC2Config service.
After you connect to your instance, we recommend that you change the Administrator password from its
default value. If you lose your password or it expires, you can manually configure EC2Config to generate
a new password.
Contents
• Changing the Administrator Password After Connecting (p. 179)
• Resetting an Administrator Password that's Lost or Expired (p. 179)
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Changing the Administrator Password After Connecting
Use the following procedure to change the password for the Administrator account for your instance.
Important
Store the new password in a safe place, because you can't get it using the Amazon EC2 console;
the console always gets the default password. If you attempt to connect to the instance using
the default password after the password was changed, you'll get the error "Your credentials did
not work."
To change the local Administrator password
1.
2.
Connect to your instance.
From your instance, open a Command Prompt window.
3.
From the Command Prompt window, run the following command:
C:\> net user Administrator new_password
Resetting an Administrator Password that's Lost
or Expired
If you've lost the password for the local Administrator account for your Windows instance, or if the password
has expired, you can reset the password using the EC2Config service. Note that you can't reset the
password if you've disabled the local Administrator account.
You'll use the EC2Config service to reset the administrator password by modifying one of its configuration
files on the boot volume of the instance that needs the password reset. However, this file can't be modified
unless the volume is not currently the root volume. Therefore, you must detach the root volume from the
instance, attach the volume to another instance as a secondary volume, change the configuration settings,
and then reattach the volume as the root volume.
Important
The instance gets a new public IP address after you stop and start it as described in the following
procedure. After resetting the password, be sure to connect to the instance using its current
public DNS name. If the instance is in EC2-Classic, any Elastic IP address is disassociated from
the instance, so you must reassociate it. For more information, see Instance Lifecycle (p. 127).
To reset the Administrator password
1.
2.
Verify that the EC2Config service is installed on the instance that needs a password reset. (This instance is referred to as the original instance in this procedure.) EC2Config is available by default on
all Amazon Windows AMIs, or you can download it. For more information, see Installing the Latest
Version of EC2Config (p. 167).
Open the Amazon EC2 console.
3.
Stop the original instance as follows:
a.
In the navigation pane, click Instances.
b.
c.
Right-click the original instance and then click Stop.
In the Stop Instances dialog box, click Yes, Stop. After the instance has stopped, proceed with
the next step.
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Launch a Windows instance in the same Availability Zone as the original instance. (This instance is
referred to as the temporary instance in this procedure.)
Warning
If your temporary instance is based on the same AMI that the original instance is based on,
and the operating system is later than Windows Server 2003, you must complete additional
steps or you won't be able to boot the original instance after you restore its root volume
because of a disk signature collision. Alternatively, select a different AMI for the temporary
instance. For example, if the original instance uses the AWS Windows AMI for Windows
Server 2008 R2, launch the temporary instance using the AWS Windows AMI for Windows
Server 2012 or Windows Server 2003. (To find an AMI for Windows Server 2003, search
for an AMI using the name Windows_Server-2003-R2_SP2.)
5.
Detach the root volume from the original instance as follows:
a.
b.
c.
6.
In the list of volumes, right-click the volume, and then click Detach Volume. After the volume's
status changes to available, proceed with the next step.
Attach the volume to the temporary instance as a secondary volume as follows:
a.
b.
c.
d.
7.
On the Description pane of the original instance, note the volume ID of the volume listed as
the Root device.
In the navigation pane, click Volumes.
Right-click the volume and click Attach Volume.
In the Attach Volume dialog box, start typing the name or ID of your temporary instance in the
Instances field, and then select it from the list of suggested options.
In the Device box, type xvdf (if it isn't already there), and then click Attach.
Connect to the temporary instance, open the Disk Management utility, and bring the drive online.
For more information, see Make the Volume Available on Windows (p. 367).
Modify the configuration file on the secondary volume as follows:
a.
From the temporary instance, open \Program Files\Amazon\Ec2ConfigService\Settings\config.xml using a text editor, such as Notepad.
b.
At the top of the file, find the plugin with the name Ec2SetPassword, as shown here. Change
the state from Disabled to Enabled and then save the file.
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Resetting an Administrator Password that's Lost or Expired
8.
(Optional) If your temporary instance is based on the same AMI that the original instance is based
on, and the operating system is later than Windows Server 2003, you must complete the following
steps or you won't be able to boot the original instance after you restore its root volume because of
a disk signature collision.
a.
In the Registry Editor, load the following registry hive into a folder named BCD: d:\boot\bcd.
b.
Search for the following data value in BCD: "Windows Boot Manager". You'll find a match under
a key named 12000004.
c.
Select the key named 11000001 that is sibling to the key you found in the previous step. View
the data for the Element value.
d.
Locate the four-byte disk signature at offset 0x38 in the data. Reverse the bytes to create the
disk signature, and write it down. For example, the disk signature represented by the following
data is E9EB3AA5:
...
0030
0038
0040
...
e.
00 00 00 00 01 00 00 00
A5 3A EB E9 00 00 00 00
00 00 00 00 00 00 00 00
In a Command Prompt window, run the following command to start Microsoft DiskPart.
C:\> diskpart
f.
Run the following DiskPart command to select the volume. (You can verify that the disk number
is 1 using the Disk Management utility.)
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DISKPART> select disk 1
Disk 1 is now the selected disk.
g.
Run the following DiskPart command to get the disk signature.
DISKPART> uniqueid disk
Disk ID: 0C764FA8
h.
If the disk signature shown in the previous step doesn't match the disk signature from BCD that
you wrote down earlier, use the following DiskPart command to change the disk signature so
that it matches:
DISKPART> uniqueid disk id=E9EB3AA5
9.
Detach the secondary volume from the temporary instance as follows:
a.
Using the Disk Management utility, bring the volume offline.
Note
The drive is automatically offline if the temporary instance is running the same operating
system as the affected instance, so you won't need to bring it offline manually.
b.
c.
From the Amazon EC2 console, in the navigation pane, click Volumes.
In the list of volumes, right-click the volume, and then click Detach Volume. After the volume's
status changes to available, proceed with the next step.
10. Reattach the volume to the original instance as its root volume as follows:
a.
b.
c.
Right-click the volume and then click Attach Volume.
In the Attach Volume dialog box, start typing the name or ID of the original instance in the Instances list, and then select the instance.
In the Device box, enter /dev/sda1.
d.
Click Yes, Attach.
11. Restart the original instance as follows:
a.
b.
In the navigation pane, click Instances.
Right-click the original instance and then click Start.
c.
In the Start Instances dialog box, click Yes, Start.
12. Retrieve the new default password as follows:
a.
In the navigation pane, click Instances.
b.
c.
Right-click the original instance and then click Get Windows Password.
In the Retrieve Default Windows Administrator Password dialog box, click Browse, and then
select the .pem file that corresponds to the key pair that you specified when you launched the
instance.
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Configuring a Secondary Private IP Address
d.
Click Decrypt Password. You'll use the decrypted password to connect to the original instance
using the local Administrator account.
Configuring a Secondary Private IP Address for
Your Windows Instance in a VPC
In EC2-VPC, you can specify multiple private IP addresses for your instances. After you assign a secondary
private IP address to an instance in a VPC, you must configure the operating system on the instance to
recognize the secondary private IP address.
Configuring the operating system on a Windows instance to recognize a secondary private IP address
requires the following:
• Step 1: Configure Static IP Addressing on Your Windows Instance (p. 183)
• Step 2: Configure a Secondary Private IP Address for Your Windows Instance (p. 185)
• Step 3: Configure Applications to Use the Secondary Private IP Address (p. 186)
Note
These instructions are based on Windows Server 2008 R2. The implementation of these steps
may vary based on the operating system of the Windows instance.
Prerequisites
Before you begin, make sure you meet the following requirements:
• As a best practice, launch your Windows instances using the latest AMIs. If you are using an older
Windows AMI, ensure that it has the Microsoft hot fix referenced in http://support.microsoft.com/kb/
2582281.
• After you launch your instance in your VPC, add a secondary private IP address. For more information,
see Multiple Private IP Addresses (p. 329).
• To allow Internet requests to your website after you complete the tasks in these steps, you must configure an Elastic IP address and associate it with the secondary private IP address. For more information,
see Associating an Elastic IP Address with the Secondary Private IP Address (p. 332).
Step 1: Configure Static IP Addressing on Your
Windows Instance
To enable your Windows instance to use multiple IP addresses, you must configure your instance to use
static IP addressing rather than a DHCP server.
Important
When you configure static IP addressing on your instance, the IP address must match exactly
what is shown in the AWS console, CLI, or API. If you enter these IP addresses incorrectly, the
instance could become unreachable.
To configure static IP addressing on a Windows instance
1.
Connect to your instance.
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Step 1: Configure Static IP Addressing on Your Windows
Instance
Find the IP address, subnet mask, and default gateway addresses for the instance by performing
the following steps:
a.
b.
Click Start. In the Search field, type cmd to open a command prompt window, and then press
Enter.
At the command prompt, run the following command: ipconfig /all. Review the following section
in your output, and note the IPv4 Address, Subnet Mask, Default Gateway, and DNS Servers
values for the network interface.
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix
Description . . . . . . . . . .
Physical Address . . . . . . .
DHCP Enabled. . . . . . . . . .
Autoconfiguration Enabled . . .
IPv4 Address. . . . . . . . . .
Subnet Mask . . . . . . . . . .
Default Gateway . . . . . . . .
DNS Servers . . . . . . . . . .
3.
.
.
.
.
.
.
.
.
.
:
:
:
:
:
:
:
:
:
10.0.0.131
255.255.255.0
10.0.0.1
10.1.1.10
10.1.1.20
Open the Network and Sharing Center by running the following command from the command
prompt:
C:\> %SystemRoot%\system32\control.exe ncpa.cpl
4.
5.
6.
Right-click the network interface (Local Area Connection) and select Properties.
Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
In the Internet Protocol Version 4 (TCP/IPv4) Properties dialog box, select Use the following IP
address, enter the following values, and click OK.
Field
Value
IP address
The IPv4 address obtained in step 2 above.
Subnet mask
The subnet mask obtained in step 2 above.
Default gateway
The default gateway address obtained in step 2
above.
Preferred DNS server
The DNS server obtained in step 2 above.
Alternate DNS server
The alternate DNS server obtained in step 2
above. If an alternate DNS server was not listed,
leave this field blank.
Important
If you set the IP address to any value other than the current IP address, you will lose connectivity to the instance.
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Step 2: Configure a Secondary Private IP Address for
Your Windows Instance
You will lose RDP connectivity to the Windows instance for a few seconds while the instance converts
from using DHCP to static addressing. The instance retains the same IP address information as before,
but now this information is static and not managed by DHCP.
Step 2: Configure a Secondary Private IP Address
for Your Windows Instance
After you have set up static IP addressing on your Windows instance, you are ready to prepare a second
private IP address.
To configure a secondary IP address for a Windows instance
1.
2.
3.
4.
5.
6.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Instances.
Select your instance.
On the Description tab, note the secondary IP address.
Connect to your instance.
On your Windows instance, click Start, and then click Control Panel.
7.
8.
9.
Click Network and Internet, and then click Network and Sharing Center.
Click the network interface (Local Area Connection).
Click Properties.
10. In the Local Area Connection Properties page, click Internet Protocol Version 4 (TCP/IPv4),
click Properties, and then click Advanced.
11. Click Add.
12. In the TCP/IP Address dialog box, type the secondary private IP address in the IP address box. In
the Subnet mask box, type the same subnet mask that you entered for the primary private IP address
in Step 1: Configure Static IP Addressing on Your Windows Instance (p. 183), and then click Add.
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Step 3: Configure Applications to Use the Secondary
Private IP Address
13. Verify the IP address settings, and then click OK.
14. Click OK again, and then click Close.
15. To confirm that the secondary IP address has been added to the operating system, at a command
prompt, run the command ipconfig /all.
Step 3: Configure Applications to Use the Secondary Private IP Address
You can configure any applications to use the secondary private IP address. For example, if your instance
is running a website on IIS, you can configure IIS to use the secondary private IP address.
To configure IIS to use the secondary private IP address
1.
Connect to your instance.
2.
3.
Open Internet Information Services (IIS) Manager.
In the Connections pane, expand Sites.
4.
5.
6.
Right-click your website, and then click Edit Bindings.
In the Site Bindings dialog box, under Type, click http, and then click Edit.
In the Edit Site Binding dialog box, in the IP address box, click the secondary private IP address.
(By default, each website accepts HTTP requests from all IP addresses.)
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Setting the Time
7.
Click OK, and then click Close.
Setting the Time for a Windows Instance
A consistent and accurate time reference is crucial for many server tasks and processes. Most system
logs include a time stamp that you can use to determine when problems occur and in what order the
events take place. We recommend that you use Coordinated Universal Time (UTC) for your Windows
instances. However, you can use a different time zone if you want.
Contents
• Changing the Time Zone (p. 187)
• Configuring Network Time Protocol (NTP) (p. 188)
• Configuring Time Settings for Windows Server 2008 and later (p. 188)
• Configuring Time Settings for Windows Server 2003 (p. 189)
Changing the Time Zone
Windows instances are set to the UTC time zone by default. you can change the time to correspond to
your local time zone or a time zone for another part of your network.
To change the time zone on an instance
1.
2.
From your instance, open a Command Prompt window.
Identify the time zone to use on the instance. To get a list of time zones, use the following command:
tzutil /l. This command returns a list of all available time zones, using the following format:
display name
time zone ID
3.
4.
Locate the time zone ID to assign to the instance.
Assign the time zone to the instance by using the following command:
C:\> tzutil /s "Pacific Standard Time"
The new time zone should take effect immediately.
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Configuring Network Time Protocol (NTP)
Configuring Network Time Protocol (NTP)
Windows instances use the time.windows.com NTP server to configure the system time; however, you
can change the instance to use a different set of NTP servers if you need to. For example, if you have
Windows instances that do not have Internet access, you can configure them to use an NTP server located
within your private network. The procedures in this section show how you can verify and change the NTP
configuration for an instance.
To verify the NTP configuration
1.
From your instance, open a Command Prompt window.
2.
Get the current NTP configuration by typing the following command:
C:\> w32tm /query /configuration
3.
This command returns the current configuration settings for the Windows instance.
(Optional) Get the status of the current configuration by typing the following command:
C:\> w32tm /query /status
This command returns information such as the last time the instance synced with the NTP server
and the poll interval.
To change the NTP configuration
1.
From the Command Prompt window, run the following command:
C:\> w32tm /config /manualpeerlist:comma-delimited list of NTP servers
/syncfromflags:manual /update
2.
Where comma-delimited list of NTP servers is the list of NTP servers for the instance to
use.
Verify your new settings by using the following command:
C:\> w32tm /query /configuration
Configuring Time Settings for Windows Server
2008 and later
When you change the time on a Windows instance, you must ensure that the time persists through system
restarts. Otherwise, when the instance restarts, it reverts back to using UTC time. For Windows Server
2008 and later, you can persist your time setting by adding a RealTimeIsUniversal registry key.
To set the RealTimeIsUniversal registry key
1.
2.
From the instance, open a Command Prompt window.
Use the following command to add the registry key:
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C:\> reg add "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TimeZoneIn
formation" /v RealTimeIsUniversal /d 1 /t REG_DWORD /f
3.
(Optional) If you are using an AMI that was created before February 22, 2013, you should verify that
the Microsoft hotfix KB2800213 is installed. If this hotfix is not installed, install it. This hotfix resolves
a known issue in which the RealTimeIsUniversal key causes the Windows CPU to run at 100%
during Daylight savings events and the start of each calendar year (January 1).
If you are using an AMI running Windows Server 2008 R2, you must verify that the Microsoft hotfix
KB2922223 is installed. If this hotfix is not installed, install it. This hotfix resolves a known issue in
which the RealTimeIsUniversal key prevents the system from updating the CMOS clock.
4.
(Optional) Verify that the instance saved the key successfully using the following command:
C:\> reg query "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TimeZoneIn
formation" /s
This command returns the subkeys for the TimeZoneInformation registry key. You should see the
RealTimeIsUniversal key at the bottom of the list, similar to the following:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TimeZoneInformation
Bias
REG_DWORD
0x1e0
DaylightBias
REG_DWORD
0xffffffc4
DaylightName
REG_SZ
@tzres.dll,-211
DaylightStart
REG_BINARY
00000300020002000000000000000000
StandardBias
REG_DWORD
0x0
StandardName
REG_SZ
@tzres.dll,-212
StandardStart
REG_BINARY
00000B00010002000000000000000000
TimeZoneKeyName
REG_SZ
Pacific Standard Time
DynamicDaylightTimeDisabled
REG_DWORD
0x0
ActiveTimeBias
REG_DWORD
0x1a4
RealTimeIsUniversal
REG_DWORD
0x1
Configuring Time Settings for Windows Server
2003
When you change the time zone on an instance running Windows Server 2003, you must ensure that
the time persists through system restarts. Otherwise, if you restart the instance, it reverts to using the
UTC clock for your time zone, resulting in a time skew that correlates with your time offset.You can persist
your time setting by updating your Citrix PV drivers. For more information, see Upgrading PV Drivers on
Your Windows AMI (p. 169).
After you update the Citrix PV drivers, the Citrix Tools for Virtual Machines Service sets the time on the
instance when the service is started.
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Monitoring Amazon EC2
Monitoring is an important part of maintaining the reliability, availability, and performance of your Amazon
Elastic Compute Cloud (Amazon EC2) instances and your AWS solutions. You should collect monitoring
data from all of the parts in your AWS solutions so that you can more easily debug a multi-point failure if
one occurs. Before you start monitoring Amazon EC2, however, you should create a monitoring plan that
should include:
•
•
•
•
•
•
What are your goals for monitoring?
What resources you will monitor?
How often you will monitor these resources?
What monitoring tools will you use?
Who will perform the monitoring tasks?
Who should be notified when something goes wrong?
After you have defined your monitoring goals and have created your monitoring plan, the next step is to
establish a baseline for normal Amazon EC2 performance in your environment. You should measure
Amazon EC2 performance at various times and under different load conditions. As you monitor Amazon
EC2, you should store a history of monitoring data that you've collected.You can compare current Amazon
EC2 performance to this historical data to help you to identify normal performance patterns and performance
anomalies, and devise methods to address them. For example, you can monitor CPU utilization, disk I/O,
and network utilization for your Amazon EC2 instances. When performance falls outside your established
baseline, you might need to reconfigure or optimize the instance to reduce CPU utilization, improve disk
I/O, or reduce network traffic.
To establish a baseline you should, at a minimum, monitor the following items:
Item to Monitor
Amazon EC2 Metric
CPU utilization
CPUUtilization (p. 204)
Monitoring Script
Memory utilization
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Memory used
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Memory available
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
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Automated and Manual Monitoring
Item to Monitor
Amazon EC2 Metric
Network utilization
NetworkIn (p. 204)
Monitoring Script
NetworkOut (p. 204)
Disk performance
DiskReadOps (p. 204)
DiskWriteOps (p. 204)
Disk Swap utilization
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Swap used (Linux)
Page File utilization
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Page File used
Page File available
Disk Reads/Writes
DiskReadBytes (p. 204)
DiskWriteBytes (p. 204)
Disk Space utilization
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Disk Space used
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Disk Space available
Monitoring Scripts for Amazon
EC2 Instances (p. 253)
Automated and Manual Monitoring
AWS provides various tools that you can use to monitor Amazon EC2. You can configure some of these
tools to do the monitoring for you, while some of the tools require manual intervention.
Topics
• Automated Monitoring Tools (p. 191)
• Manual Monitoring Tools (p. 192)
Automated Monitoring Tools
You can use the following automated monitoring tools to watch Amazon EC2 and report back to you when
something is wrong:
• System Status Checks - monitor the AWS systems required to use your instance to ensure they are
working properly. These checks detect problems with your instance that require AWS involvement to
repair. When a system status check fails, you can choose to wait for AWS to fix the issue or you can
resolve it yourself (for example, by stopping and restarting or terminating and replacing an instance).
Examples of problems that cause system status checks to fail include:
• Loss of network connectivity
• Loss of system power
• Software issues on the physical host
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Manual Monitoring Tools
• Hardware issues on the physical host
For more information, see Monitoring Instances with Status Checks (p. 193).
• Instance Status Checks - monitor the software and network configuration of your individual instance.
These checks detect problems that require your involvement to repair. When an instance status check
fails, typically you will need to address the problem yourself (for example by rebooting the instance or
by making modifications in your operating system). Examples of problems that may cause instance
status checks to fail include:
• Failed system status checks
• Misconfigured networking or startup configuration
• Exhausted memory
• Corrupted file system
• Incompatible kernel
For more information, see Monitoring Instances with Status Checks (p. 193).
• Amazon CloudWatch Alarms - watch a single metric over a time period you specify, and perform one
or more actions based on the value of the metric relative to a given threshold over a number of time
periods. The action is a notification sent to an Amazon Simple Notification Service (Amazon SNS)
topic or Auto Scaling policy. Alarms invoke actions for sustained state changes only. CloudWatch
alarms will not invoke actions simply because they are in a particular state, the state must have changed
and been maintained for a specified number of periods. For more information, see Monitoring Your Instances with CloudWatch (p. 201).
• Amazon EC2 Monitoring Scripts - Perl and PowerShell scripts that can monitor memory, disk, and
page/swap file usage in your instances. For more information, see Monitoring Scripts for Amazon EC2
Instances (p. 253).
• AWS Management Pack for Microsoft System Center Operations Manager - links Amazon EC2
instances and the Microsoft Windows or Linux operating systems running inside them. The AWS
Management Pack is an extension to Microsoft System Center Operations Manager. It uses a designated
computer in your datacenter (called a watcher node) and the Amazon Web Services APIs to remotely
discover and collect information about your AWS resources. For more information, see AWS Management Pack for Microsoft System Center (p. 454).
Manual Monitoring Tools
Another important part of monitoring Amazon EC2 involves manually monitoring those items that the
monitoring scripts, status checks, and CloudWatch alarms don't cover.The Amazon EC2 and CloudWatch
console dashboards provide an at-a-glance view of the state of your Amazon EC2 environment.
• Amazon EC2 Dashboard shows:
• Service Health and Scheduled Events by region
• Instance state
• Status checks
• Alarm status
• Instance metric details (In the navigation pane click Instances, select an instance, and then click
the Monitoring tab)
• Volume metric details (In the navigation pane click Volumes, select a volume, and then click the
Monitoring tab)
• Amazon CloudWatch Dashboard shows:
• Current alarms and status
• Graphs of alarms and resources
• Service health status
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Best Practices for Monitoring
In addition, you can use CloudWatch to do the following:
• Graph Amazon EC2 monitoring data to troubleshoot issues and discover trends
• Search and browse all your AWS resource metrics
• Create and edit alarms to be notified of problems
• See at-a-glance overviews of your alarms and AWS resources
Best Practices for Monitoring
Use the following best practices for monitoring to help you with your Amazon EC2 monitoring tasks.
• Make monitoring a priority to head off small problems before they become big ones.
• Create and implement a monitoring plan that collects monitoring data from all of the parts in your AWS
solution so that you can more easily debug a multi-point failure if one occurs. Your monitoring plan
should address, at a minimum, the following questions:
• What are your goals for monitoring?
• What resources you will monitor?
• How often you will monitor these resources?
• What monitoring tools will you use?
• Who will perform the monitoring tasks?
• Who should be notified when something goes wrong?
• Automate monitoring tasks as much as possible.
• Check the log files on your EC2 instances.
Monitoring the Status of Your Instances
You can monitor the status of your instances by viewing status checks and scheduled events for your
instances. A status check gives you the information that results from automated checks performed by
Amazon EC2. These automated checks detect whether specific issues are affecting your instances. The
status check information, together with the data provided by Amazon CloudWatch, gives you detailed
operational visibility into each of your instances.
You can also see status on specific events scheduled for your instances. Events provide information
about upcoming activities such as rebooting or retirement that are planned for your instances, along with
the scheduled start and end time of each event.
Contents
• Monitoring Instances with Status Checks (p. 193)
• Monitoring Events for Your Instances (p. 198)
Monitoring Instances with Status Checks
With instance status monitoring you can quickly determine whether Amazon EC2 has detected any
problems that may prevent your instances from running applications. Amazon EC2 performs automated
checks on every running Amazon EC2 instance to identify hardware and software issues. You can view
the results of these status checks to identify specific and detectable problems. This data augments the
information that Amazon EC2 already provides about the intended state of each instance (pending, running,
stopping, etc.) as well as the utilization metrics that Amazon CloudWatch monitors (CPU utilization, network
traffic, and disk activity).
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Status checks are performed every minute and each returns a pass or a fail status. If all checks pass,
the overall status of the instance is OK. If one or more checks fail, the overall status is impaired. Status
checks are built into Amazon EC2, so they cannot be disabled or deleted. You can, however create or
delete alarms that are triggered based on the result of the status checks. For example, you can create
an alarm to warn you if status checks fail on a specific instance. For more information, see Creating and
Editing Status Check Alarms (p. 196).
There are two types of status checks: system status checks and instance status checks.
System status checks monitor the AWS systems required to use your instance to ensure they are
working properly. These checks detect problems with your instance that require AWS involvement to repair.
When a system status check fails, you can choose to wait for AWS to fix the issue or you can resolve it
yourself (for example, by stopping and restarting or terminating and replacing an instance). Examples of
problems that cause system status checks to fail include:
•
•
•
•
Loss of network connectivity
Loss of system power
Software issues on the physical host
Hardware issues on the physical host
Instance status checks monitor the software and network configuration of your individual instance.
These checks detect problems that require your involvement to repair. When an instance status check
fails, typically you will need to address the problem yourself (for example, by rebooting the instance or
by making modifications in your operating system). Examples of problems that may cause instance status
checks to fail include:
•
•
•
•
Failed system status checks
Misconfigured networking or startup configuration
Exhausted memory
Corrupted file system
Note
Status checks that occur during instance reboot or while a Windows instance store-backed instance is being bundled will report an instance status check failure until the instance becomes
available again.
Viewing Status
AWS provides you with several ways to view and work with status checks: You can use the AWS Management Console, interact directly with the API, or use the command line interface.
Amazon EC2 Console
To view status checks using the console
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
3.
4.
In the navigation pane, click Instances.
On the Instances page, the Status Checks column lists the operational status of each instance.
To view an individual instance’s status, select the instance, and then click the Status Checks tab.
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Note
If you have an instance with a failed status check and the instance has been unreachable for
over 20 minutes, you can click Contact AWS Support to submit a request for assistance.
Command Line Interface
To do this
Run this command
Get the status of all instances
describe-instance-status
Get the status of all instances with a instance status describe-instance-status --filters
of impaired
Name=instance-status.status,Values=impaired
Get the status of a single instance with instance ID describe-instance-status --instance-ids
i-15a4417c
-i-15a4417c
For more information about using the describe-instance-status command, see describe-instance-status
in the AWS Command Line Interface Reference.
API
You can use the DescribeInstanceStatus action to retrieve the status of your instances. For more
information, see DescribeInstanceStatus in the Amazon EC2 API Reference.
Reporting Status
You can provide feedback about your instances if you are having problems with an instance whose status
is not shown as impaired, or to send AWS additional details about the problems you are experiencing
with an impaired instance.
We use reported feedback to identify issues impacting multiple customers, but do not respond to individual
account issues reported via this form. Providing feedback does not change the status check results that
you currently see for this instance.
If you are in need of technical assistance specific to your account, please post your question to the Developer Forums or contact Premium Support.
Amazon EC2 Console
To report status feedback using the console
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
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2.
3.
In the navigation pane, click Instances.
On the Instances page, click on the instance on which you want to report status.
4.
5.
Click the Status Checks tab, and then click Submit feedback.
Complete the information on the Report Instance Status page.
Command Line Interface
Use the report-instance-status command to send status feedback using the command line interface.
The command uses the following syntax:
aws ec2 report-instance-status [--instances ...] [--status ...] [--reason-codes]
..]
For more information about using the report-instance-status command, see the report-instancestatus command in the AWS Command Line Interface Reference.
API
You can use the ReportInstanceStatus action to submit feedback about a running instance's status.
If your experience with the instance differs from the instance status returned by the DescribeInstanceStatus action, use ReportInstanceStatus to report your experience with the instance.
Amazon EC2 collects this information to improve the accuracy of status checks. For more information,
see ReportInstanceStatus in the Amazon EC2 API Reference.
Creating and Editing Status Check Alarms
You can create instance status and system status alarms to notify you when an instance has a failed
status check. To create or change these alarms, you can use either the AWS Management Console or
the command line interface (CLI).
AWS Management Console
To create a status check alarm
You can create status check alarms for an existing instance to monitor instance status or system status.
You can configure the alarm to send you a notification by email when an instance fails an instance check
or system status check.
1.
2.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Instances.
3.
4.
Select an instance, and then on the Status Checks tab, click Create Status Check Alarm.
In the Create Alarm dialog box, select the Send a notification to check box, and then choose an
existing Amazon Simple Notification Service (SNS) topic or create a new SNS topic to use for this
alarm.
In the With these recipients box, type your email address (e.g., [email protected]) and the
addresses of any additional recipients, separated by commas.
In the Whenever drop-down list, select the status check you want to be notified about (e.g., Status
Check Failed (Any), Status Check Failed (Instance), or Status Check Failed (System)).
In the For at least box, set the number of periods you want to evaluate (for example, 2) and in the
consecutive periods drop-down menu, select the evaluation period duration (for example, 5 minutes)
before triggering the alarm and sending an email
5.
6.
7.
8.
To change the default name for the alarm, in the Name of alarm box, type a friendly name for the
alarm (for example, StatusCheckFailed), and then click Create Alarm.
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Important
If you added an email address to the list of recipients or created a new topic, Amazon SNS
will send a subscription confirmation email message to each new address shortly after you
create an alarm. Remember to click the link contained in that message, which confirms your
subscription. Alert notifications are sent only to confirmed addresses.
To edit a status check alarm
If you need to make changes to an instance status alarm, you can edit it.
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
3.
4.
In the navigation pane, click Instances.
Select an instance, click Actions, and then click Add/Edit Alarms.
In the Alarm Details dialog box, click the name of the alarm.
5.
In the Edit Alarm dialog box, make the desired changes, and then click Save.
Command Line Interface
To create a status check alarm using the CLI
You can create a status check alarm using the AWS CLI. In the following example, the alarm publishes
a notification to a specific SNS topic that has the ARN arn:aws:sns:us-east1:1111111111:StatusCheckNotifications when instance i-ab12345 fails either the instance check or system
status check for at least two periods. (The metric is StatusCheckFailed.) For more information, see the
put-metric-alarm command in the AWS Command Line Interface Reference.
1.
2.
3.
At a command prompt, type aws cloudwatch list-metrics to view the list of all available
Amazon CloudWatch metrics for the services in AWS that you're using.
In the list of metrics, review the Status Check metrics that have the AWS/EC2 namespace. These
are the status check metrics that you can use to create a status check alarm.
At the command prompt, enter the following command:
C:\> aws cloudwatch put-metric-alarm --alarm-name StatusCheckFailed-Alarmfor-i-ab12345 --alarm-description "Alarm when StatusCheckFailed metric has
a value of one for two periods" --metric-name StatusCheckFailed --namespace
AWS/EC2 --statistic Maximum --dimensions Name=InstanceId,Value=i-ab12345
--period 300 --unit Count --evaluation-periods 2 --threshold 1 --comparisonoperator GreaterThanThreshold --alarm-actions arn:aws:snsus-east1:1111111111StatusCheckNotifications
Where:
The --alarm-name is the name of the alarm. This is required.
The --alarm-description is a friendly description of the alarm.
The --metric-name is one of the available status metrics (e.g., StatusCheckFailed, StatusCheckFailed_Instance, or StatusCheckFailed_System). This is required.
The --namespace is the metric’s namespace (e.g., AWS/EC2). This is required.
The --statistic is one of the following values: Average, Sum, Minimum, or Maximum. This is required.
The --dimensions are associated with the metric (e.g., InstanceId=i-ab12345).
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The --period is the time frame (in seconds) in which Amazon CloudWatch metrics are collected. In
this example, you would enter 300, which is 60 seconds multiplied by 5 minutes. This is required.
The --unit is unit for the alarm's associated metric.
The --evaluation-periods is the number of consecutive periods for which the value of the metric
must be compared to the threshold. This is required.
The --threshold is the value to which the metric will be compared (e.g., 1). This is required.
The --alarm-actions is the list of actions to perform when this alarm is triggered. Each action is
specified as an Amazon Resource Number (ARN). In this example, we want the alarm to send us
an email using Amazon SNS.
Note
You can find the ARN for the Amazon SNS topic that the alarm will use in the Amazon SNS
console:
1.
2.
3.
Open the Amazon SNS console at https://console.aws.amazon.com/sns/.
In the navigation pane, under My Topics, select the topic you want the alarm to send
mail to.
The ARN is located in the Topic ARN field on the Topic Details pane.
The --unit is the unit of the metric on which to alarm (e.g., Count).
Monitoring Events for Your Instances
Instance status describes specific events that AWS may schedule for your instances, such as a reboot
or retirement. These scheduled events are not frequent. If one of your instances will be affected by a
scheduled event, you'll receive an email prior to the scheduled event with details about the event, as well
as a start and end date. You can also view scheduled events for your instance by using the Amazon EC2
console, API, or CLI. For more information, see Viewing Scheduled Events (p. 198).
There are different types of scheduled events:
• Reboot: A reboot can be either an instance reboot or a system reboot.
• System maintenance: An instance may be temporarily affected by network maintenance or power
maintenance.
• Instance retirement: An instance that's scheduled for retirement will be stopped or terminated.
• Instance stop: An instance may need to be stopped in order to migrate it to new hardware.
If one of your instances is scheduled for any of the above events, you may be able to take actions to
control the timing of the event, or to minimize downtime. For more information, see Working with an Instance
That Has a Scheduled Event (p. 199).
Contents
• Viewing Scheduled Events (p. 198)
• Working with an Instance That Has a Scheduled Event (p. 199)
Viewing Scheduled Events
You can view scheduled events for your instances using the Amazon EC2 console, the command line
interface (CLI), or the API.
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Amazon EC2 Console
To view scheduled events for your instances using the console
1.
2.
3.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Events. You can see a list of all resources with events associated with
them. You can filter by instance or volume, or by specific status types.
Alternatively, you can do the following to view upcoming scheduled events:
a.
In the navigation pane, click the EC2 Dashboard.
b.
Under Scheduled Events, you can see the events associated with your Amazon EC2 instances
and volumes.
Command Line Interface and API
To view the status of your instances, use the ec2-describe-instance-status command, or the DescribeInstanceStatus API action.
Working with an Instance That Has a Scheduled Event
If your instance has a scheduled event, your course of action will depend on whether your instance’s root
device volume is an Amazon EBS volume or an instance store volume.You can determine the root device
type for an instance by checking the value of the Root device type field in the details pane on the Instances page.
Instances Scheduled for Reboot
AWS may schedule instances for a reboot in order to perform tasks such as applying patches, upgrades,
or maintenance to the underlying host. There are two types of reboot events: system reboot and instance
reboot. During a system reboot, your instance and the hardware supporting your instance is rebooted.
During an instance reboot, your instance is rebooted, but the hardware supporting your instance is not
rebooted.You can find out which type of reboot event is scheduled for your instance by using the Amazon
EC2 console.
To view the type of scheduled reboot events
1.
2.
3.
4.
Sign in to the AWS Management Console and open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Events.
Select Instance resources from the filter list, and locate your instance.
Look under the Event Type column. The column should indicate system-reboot or instancereboot.
Actions Required for System Reboot
No action is required on your part if one of your instances is scheduled for a system reboot. We recommend
that you wait for the reboot to occur automatically within its scheduled maintenance window. The reboot
typically completes in a matter of minutes.
After the reboot completes, you can begin using your instance again. It is not necessary to wait until the
scheduled end time.
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To verify that the reboot has occurred, check your scheduled events and verify that the instance no longer
shows a scheduled event. We recommend that you check whether the software on your instance is operating as you expect.
Actions Required for Instance Reboot
No action is required on your part if one of your instances is scheduled for an instance reboot. However,
you can reboot your instance manually if it is scheduled for an instance reboot.You can reboot the instance
at a time that is convenient for you before the reboot event is scheduled to begin. For more information,
see Reboot Your Instance (p. 144).
After you reboot your instance, the scheduled event for the instance reboot is canceled immediately and
the event's description is updated. The pending maintenance to the underlying host is completed, and
you can begin using your instance again after it has fully booted.
Instances Scheduled to Be Stopped or Retired
An instance is scheduled to be stopped or retired when AWS detects irreparable failure of the underlying
hardware hosting your instance. When an instance reaches its scheduled retirement date, it is stopped
or terminated by AWS. If your instance's root device is an Amazon EBS volume, the instance is stopped,
and you can start it again at any time. If your instance's root device is an instance store volume, the instance
is terminated, and cannot be used again.
Actions Required for Instances Scheduled to Be Stopped or Retired
If your instance's root device is an Amazon EBS volume, you can wait for the instance to be stopped or
retired at the scheduled event start time. Alternatively, you can stop and start the instance yourself. Doing
so migrates your instance to new hardware and help reduce unforeseen downtime. For more information
about stopping your instance, as well as information about changes to your instance configuration when
it's stopped, see Stop and Start Your Instance (p. 141).
If your instance's root device is an instance store volume, we recommend that you launch a replacement
instance from your most recent AMI, and migrate all necessary data to the replacement instance before
the scheduled retirement.You can then terminate the instance, or wait for it to be automatically terminated
when it's retired.
For more information about instances scheduled for retirement and how to manage them, see Instance
Retirement (p. 145).
Important
Any data stored on instance store volumes is lost when the instance is stopped or terminated,
and cannot be recovered. This includes instance store volumes that are attached to an instance
that has an Amazon EBS volume as the root device. Before the instance is stopped or terminated,
ensure you retrieve any data from the instance store volume that you will need later.
Instances Scheduled for Maintenance
Instances are scheduled for maintenance when underlying Amazon EC2 hardware requires maintenance.
There are two types of maintenance events: network maintenance and power maintenance. During network
maintenance, scheduled instances lose network connectivity for a brief period of time. Normal network
connectivity to your instance will be restored after maintenance is complete. During power maintenance,
scheduled instances are offline for a brief period, and then rebooted.
Actions Required for Instances Scheduled for Maintenance
No action is required on your part if one of your instances is scheduled for maintenance. However, if you
want to maintain normal operation during this time, you can launch a replacement instance from your
most recent AMI, and migrate all necessary data to the replacement instance before the scheduled
maintenance. Replacement instances are not affected by the same scheduled network or power maintenance.
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For power maintenance, when a reboot is performed, all of your instance's configuration settings are retained.
Monitoring Your Instances with CloudWatch
You can monitor your Amazon EC2 instances using Amazon CloudWatch, which collects and processes
raw data from Amazon EC2 into readable, near real-time metrics. These statistics are recorded for a
period of two weeks, so that you can access historical information and gain a better perspective on how
your web application or service is performing. By default, Amazon EC2 metric data is automatically sent
to CloudWatch in 5-minute periods. You can, however, enable detailed monitoring on an Amazon EC2
instance, which sends data to CloudWatch in 1-minute periods. For more information about Amazon
CloudWatch, see the Amazon CloudWatch Developer Guide.
The following table describes basic and detailed monitoring for Amazon EC2 instances.
Type
Description
Basic
Data is available automatically in 5-minute periods
at no charge.
Detailed
Data is available in 1-minute periods at an
additional cost. To get this level of data, you must
specifically enable it for the instance. For the
instances where you've enabled detailed
monitoring, you can also get aggregated data
across groups of similar instances.
For information about pricing, see the Amazon
CloudWatch product page.
You can get monitoring data for your Amazon EC2 instances using either the Amazon CloudWatch API
or the AWS Management Console. The console displays a series of graphs based on the raw data from
the Amazon CloudWatch API. Depending on your needs, you might prefer to use either the data from
the API or the graphs in the console.
Contents
• Enabling or Disabling Detailed Monitoring on an Amazon EC2 Instance (p. 201)
• View Amazon EC2 Metrics (p. 204)
• Get Statistics for Metrics (p. 211)
• Graphing Metrics (p. 227)
• Create a CloudWatch Alarm (p. 231)
• Create Alarms That Stop or Terminate an Instance (p. 238)
Enabling or Disabling Detailed Monitoring on an
Amazon EC2 Instance
This section describes how to enable or disable detailed monitoring on either a new instance (as you
launch it) or on a running or stopped instance. After you enable detailed monitoring, the Amazon EC2
console displays monitoring graphs with a 1-minute period for the instance. You can enable or disable
detailed monitoring using the console or the command line interface (CLI).
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AWS Management Console
To enable detailed monitoring of an existing EC2 instance
You can enable detailed monitoring of your EC2 instances, which provides data about your instance in
1-minute periods. (There is an additional charge for 1-minute monitoring.) Detailed data is then available
for the instance in the AWS Management Console graphs or through the API. To get this level of data,
you must specifically enable it for the instance. For the instances on which you've enabled detailed
monitoring, you can also get aggregated data across groups of similar instances. An instance must be
running or stopped to enable detailed monitoring.
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
3.
In the navigation pane, click Instances.
In the list of instances, select a running or stopped instance, click Actions, and then click Enable
Detailed Monitoring.
4.
5.
In the Enable Detailed Monitoring dialog box, click Yes, Enable.
In the Enable Detailed Monitoring confirmation dialog box, click Close.
Detailed data (collected with a 1-minute period) is then available for the instance in the AWS Management Console graphs or through the API.
To enable detailed monitoring when launching an EC2 instance
When launching an instance with the AWS Management Console, select the Monitoring check box on
the Configure Instance Details page of the launch wizard.
After the instance is launched, you can select the instance in the console and view its monitoring graphs
on the instance's Monitoring tab in the lower pane.
To disable detailed monitoring of an EC2 instance
When you no longer want to monitor your instances at 1-minute intervals, you can disable detailed monitoring and use basic monitoring instead. Basic monitoring provides data in 5-minute periods at no charge.
1.
2.
3.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Instances.
In the list of instances, select a running or stopped instance, click Actions, and then click Disable
Detailed Monitoring.
4.
5.
In the Disable Detailed Monitoring dialog box, click Yes, Disable.
In the Disable Detailed Monitoring confirmation dialog box, click Close.
For information about launching instances, see Launch Your Instance (p. 130).
Command Line Interface
To enable detailed monitoring on an existing instance
Use the monitor-instances command with one or more instance IDs. For more information about
using the monitor-instances command, see monitor-instances in the AWS Command Line Interface
Reference.
C:\> aws ec2 monitor-instances --instance-ids i-570e5a28
{
"InstanceMonitorings": [
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{
"InstanceId": "i-570e5a28",
"Monitoring": {
"State": "pending"
}
}
]
}
Detailed data (collected with a 1-minute period) is then available for the instance in the AWS Management
Console graphs or through the API.
To enable detailed monitoring when launching an instance
Use the run-instances command with the --monitoring flag. For more information about using the
run-instances command, see run-instances in the AWS Command Line Interface Reference.
C:\> aws ec2 run-instances --image-id ami-09092360 --key-name MyKeyPair --mon
itoring Enabled=value
Amazon EC2 returns output similar to the following example. The status of monitoring is listed as pending.
{
"OwnerId": "111122223333",
"ReservationId": "r-25fad905",
"Groups": [
{
"GroupName": "default",
"GroupId": "sg-eafe1b82"
}
],
"Instances": [
{
"Monitoring": {
"State": "pending"
},
"PublicDnsName": null,
"Platform": "windows",
"State": {
"Code": 0,
"Name": "pending"
},
"EbsOptimized": false,
"LaunchTime": "2014-02-24T18:02:49.000Z",
"ProductCodes": [],
"StateTransitionReason": null,
"InstanceId": "i-31283b11",
"ImageId": "ami-09092360",
"PrivateDnsName": null,
"KeyName": "MyKeyPair",
"SecurityGroups": [
{
"GroupName": "default",
"GroupId": "sg-eafe1b82"
}
],
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"ClientToken": null,
"InstanceType": "m1.small",
"NetworkInterfaces": [],
"Placement": {
"Tenancy": "default",
"GroupName": null,
"AvailabilityZone": "us-east-1b"
},
"Hypervisor": "xen",
"BlockDeviceMappings": [],
"Architecture": "x86_64",
"StateReason": {
"Message": "pending",
"Code": "pending"
},
"VirtualizationType": "hvm",
"RootDeviceType": "instance-store",
"AmiLaunchIndex": 0
}
]
}
After the instance is running, detailed data (collected with a 1-minute period) is then available for the instance in the AWS Management Console graphs or through the API.
To disable detailed monitoring of an instance
Use the unmonitor-instances command with one or more instance IDs. For more information about
using the unmonitor-instances command, see unmonitor-instances in the AWS Command Line Interface
Reference.
C:\> aws ec2 unmonitor-instances --instance-ids i-570e5a28
{
"InstanceMonitorings": [
{
"InstanceId": "i-570e5a28",
"Monitoring": {
"State": "disabling"
}
}
]
}
View Amazon EC2 Metrics
Only those services in AWS that you're using send metrics to Amazon CloudWatch. You can use the
Amazon CloudWatch console, the mon-list-metrics command, or the ListMetrics API to view the
metrics that Amazon EC2 sends to CloudWatch. If you've enabled detailed monitoring, each data point
covers the instance's previous 1 minute of activity. Otherwise, each data point covers the instance's
previous 5 minutes of activity.
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Metric
Description
CPUCreditUsage
(Only valid for T2 instances) The number of CPU credits consumed
during the specified period.
This metric identifies the amount of time during which physical CPUs
were used for processing instructions by virtual CPUs allocated to
the instance.
Note
CPU Credit metrics are available at a 5 minute frequency.
Units: Count
CPUCreditBalance
(Only valid for T2 instances) The number of CPU credits that an
instance has accumulated.
This metric is used to determine how long an instance can burst
beyond its baseline performance level at a given rate.
Note
CPU Credit metrics are available at a 5 minute frequency.
Units: Count
CPUUtilization
The percentage of allocated EC2 compute units that are currently in
use on the instance. This metric identifies the processing power
required to run an application upon a selected instance.
Units: Percent
DiskReadOps
Completed read operations from all ephemeral disks available to the
instance in a specified period of time. If your instance uses Amazon
EBS volumes, see Amazon EBS Metrics (p. 370).
Note
To calculate the average I/O operations per second (IOPS)
for the period, divide the total operations in the period by
the number of seconds in that period.
Units: Count
DiskWriteOps
Completed write operations to all ephemeral disks available to the
instance in a specified period of time. If your instance uses Amazon
EBS volumes, see Amazon EBS Metrics (p. 370).
Note
To calculate the average I/O operations per second (IOPS)
for the period, divide the total operations in the period by
the number of seconds in that period.
Units: Count
DiskReadBytes
Bytes read from all ephemeral disks available to the instance (if your
instance uses Amazon EBS, see Amazon EBS Metrics (p. 370).)
This metric is used to determine the volume of the data the application
reads from the hard disk of the instance. This can be used to
determine the speed of the application.
Units: Bytes
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Metric
Description
DiskWriteBytes
Bytes written to all ephemeral disks available to the instance (if your
instance uses Amazon EBS, see Amazon EBS Metrics (p. 370).)
This metric is used to determine the volume of the data the application
writes onto the hard disk of the instance. This can be used to
determine the speed of the application.
Units: Bytes
NetworkIn
The number of bytes received on all network interfaces by the
instance. This metric identifies the volume of incoming network traffic
to an application on a single instance.
Units: Bytes
NetworkOut
The number of bytes sent out on all network interfaces by the
instance. This metric identifies the volume of outgoing network traffic
to an application on a single instance.
Units: Bytes
StatusCheckFailed
A combination of StatusCheckFailed_Instance and
StatusCheckFailed_System that reports if either of the status checks
has failed. Values for this metric are either 0 (zero) or 1 (one.) A zero
indicates that the status check passed. A one indicates a status check
failure.
Note
Status check metrics are available at 1 minute frequency.
For a newly launched instance, status check metric data
will only be available after the instance has completed the
initialization state. Status check metrics will become
available within a few minutes of being in the running state.
Units: Count
StatusCheckFailed_Instance Reports whether the instance has passed the EC2 instance status
check in the last minute. Values for this metric are either 0 (zero) or
1 (one.) A zero indicates that the status check passed. A one indicates
a status check failure.
Note
Status check metrics are available at 1 minute frequency.
For a newly launched instance, status check metric data
will only be available after the instance has completed the
initialization state. Status check metrics will become
available within a few minutes of being in the running state.
Units: Count
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Metric
Description
StatusCheckFailed_System Reports whether the instance has passed the EC2 system status
check in the last minute. Values for this metric are either 0 (zero) or
1 (one.) A zero indicates that the status check passed. A one indicates
a status check failure.
Note
Status check metrics are available at 1 minute frequency.
For a newly launched instance, status check metric data
will only be available after the instance has completed the
initialization state. Status check metrics will become
available within a few minutes of being in the running state.
Units: Count
You can use the dimensions in the following table to refine the metrics returned for your instances.
Dimension
Description
AutoScalingGroupName
This dimension filters the data you request for all instances in a
specified capacity group. An AutoScalingGroup is a collection of
instances you define if you're using the Auto Scaling service. This
dimension is available only for EC2 metrics when the instances are
in such an AutoScalingGroup. Available for instances with Detailed
or Basic Monitoring enabled.
ImageId
This dimension filters the data you request for all instances running
this EC2 Amazon Machine Image (AMI). Available for instances with
Detailed Monitoring enabled.
InstanceId
This dimension filters the data you request for the identified instance
only. This helps you pinpoint an exact instance from which to monitor
data. Available for instances with Detailed Monitoring enabled.
InstanceType
This dimension filters the data you request for all instances running
with this specified instance type. This helps you categorize your data
by the type of instance running. For example, you might compare
data from an m1.small instance and an m1.large instance to
determine which has the better business value for your application.
Available for instances with Detailed Monitoring enabled.
For more information about using the GetMetricStatistics action, see GetMetricStatistics in the
Amazon CloudWatch API Reference.
AWS Management Console
To view available metrics by category
You can view metrics by category. Metrics are grouped first by Namespace, and then by the various Dimension combinations within each Namespace. For example, you can view all EC2 metrics, or EC2
metrics grouped by instance ID, instance type, image (AMI) ID, or Auto Scaling Group.
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
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3.
In the navigation pane, click Metrics.
4.
In the CloudWatch Metrics by Category pane, under EC2 Metrics, select Per-Instance Metrics,
and then in the upper pane, scroll down to view the full list of metrics.
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Command Line Interface
To list available metrics across multiple Amazon EC2 instances
Enter the list-metrics command and specify the AWS/EC2 namespace to limit the results to Amazon
EC2. For more information about the list-metrics command, see list-metrics in the AWS Command
Line Interface Reference.
C:\> aws cloudwatch list-metrics --namespace AWS/EC2
CloudWatch returns the following (partial listing):
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceType",
"Value": "t1.micro"
}
],
"MetricName": "CPUUtilization"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceId",
"Value": "i-570e5a28"
}
],
"MetricName": "DiskWriteOps"
},
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{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceType",
"Value": "t1.micro"
}
],
"MetricName": "NetworkOut"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "ImageId",
"Value": "ami-6cb90605"
}
],
"MetricName": "CPUUtilization"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "ImageId",
"Value": "ami-6cb90605"
}
],
"MetricName": "NetworkIn"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceType",
"Value": "t1.micro"
}
],
"MetricName": "DiskReadBytes"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceId",
"Value": "i-570e5a28"
}
],
"MetricName": "StatusCheckFailed_System"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceId",
"Value": "i-570e5a28"
}
],
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"MetricName": "NetworkOut"
},
{
"Namespace": "AWS/EC2",
"Dimensions": [
{
"Name": "InstanceId",
"Value": "i-0c986c72"
}
],
"MetricName": "DiskWriteBytes"
}
]
}
Get Statistics for Metrics
This set of scenarios shows you how you can use the AWS Management Console, the get-metricstatistics command, or the GetMetricStatistics API to get a variety of statistics.
Note
Start and end times must be within the last 14 days.
Contents
• Get Statistics for a Specific EC2 Instance (p. 211)
• Aggregating Statistics Across Instances (p. 215)
• Get Statistics Aggregated by Auto Scaling Group (p. 220)
• Get Statistics Aggregated by Image (AMI) ID (p. 223)
Get Statistics for a Specific EC2 Instance
The following scenario walks you through how to use the AWS Management Console or the get-metricstatistics command to determine the maximum CPU utilization of a specific EC2 instance.
Note
Start and end times must be within the last 14 days.
For this example, we assume that you have an EC2 instance ID. You can get an active EC2 instance ID
through the AWS Management Console or with the describe-instances command.
AWS Management Console
To display the average CPU utilization for a specific instance
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
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3.
4.
In the navigation pane, click Metrics.
In the CloudWatch Metrics by Category pane, select EC2: Metrics.
The metrics available for individual instances appear in the upper pane.
5.
Select a row that contains CPUUtilization for a specific InstanceId.
A graph showing average CPUUtilization for a single instance appears in the details pane.
6.
To change the Statistic, e.g., Average, for the metric, choose a different value from the pop-up list.
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7.
To change the Period, e.g., 5 Minutes, to view data in more granular detail, choose a different value
from the pop-up list.
Command Line Interface
To get the CPU utilization per EC2 instance
Enter the get-metric-statistics command with the following parameters. For more information
about the get-metric-statistics command, see get-metric-statistics in the AWS Command Line
Interface Reference.
C:\> aws cloudwatch get-metric-statistics --metric-name CPUUtilization --starttime 2014-02-18T23:18:00 --end-time 2014-02-19T23:18:00 --period 3600 --namespace
AWS/EC2 --statistics Maximum --dimensions Name=InstanceId,Value=<your-instanceid>
The AWS CLI returns the following:
{
"Datapoints": [
{
"Timestamp": "2014-02-19T00:18:00Z",
"Maximum": 0.33000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T03:18:00Z",
"Maximum": 99.670000000000002,
"Unit": "Percent"
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},
{
"Timestamp": "2014-02-19T07:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T12:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T02:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T01:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T17:18:00Z",
"Maximum": 3.3900000000000001,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T13:18:00Z",
"Maximum": 0.33000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-18T23:18:00Z",
"Maximum": 0.67000000000000004,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T06:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T11:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T10:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T19:18:00Z",
"Maximum": 8.0,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T15:18:00Z",
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"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T14:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T16:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T09:18:00Z",
"Maximum": 0.34000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T04:18:00Z",
"Maximum": 2.0,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T08:18:00Z",
"Maximum": 0.68000000000000005,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T05:18:00Z",
"Maximum": 0.33000000000000002,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-19T18:18:00Z",
"Maximum": 6.6699999999999999,
"Unit": "Percent"
}
],
"Label": "CPUUtilization"
}
The returned statistics are six-minute values for the requested two-day time interval. Each value represents
the maximum CPU utilization percentage for a single EC2 instance.
Aggregating Statistics Across Instances
Aggregate statistics are available for the instances that have detailed monitoring enabled. Instances that
use basic monitoring are not included in the aggregates. In addition, Amazon CloudWatch does not aggregate data across Regions. Therefore, metrics are completely separate between Regions. Before you
can get statistics aggregated across instances, you must enable detailed monitoring (at an additional
charge), which provides data in 1-minute periods.This scenario shows you how to use detailed monitoring
with either the AWS Management Console, the GetMetricStatistics API, or the get-metricstatistics command to get the average CPU usage for your EC2 instances. Because no dimension
is specified, CloudWatch returns statistics for all dimensions in the AWS/EC2 namespace. To get statistics
for other metrics, see Amazon CloudWatch Namespaces, Dimensions, and Metrics Reference.
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Important
This technique for retrieving all dimensions across an AWS namespace does not work for custom
namespaces that you publish to Amazon CloudWatch. With custom namespaces, you must
specify the complete set of dimensions that are associated with any given data point to retrieve
statistics that include the data point.
AWS Management Console
To display average CPU utilization for your Amazon EC2 instances
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, click Metrics.
In the CloudWatch Metrics by Category pane, under EC2 Metrics, select Across All Instances.
5.
The metrics available across all instances are displayed in the upper pane.
In the upper pane, select the row that contains CPUUtilization.
A graph showing CPUUtilization for your EC2 instances is displayed in the details pane.
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6.
To change the Statistic, e.g., Average, for the metric, choose a different value from the pop-up list.
7.
To change the Period, e.g., 5 Minutes, to view data in more granular detail, choose a different value
from the pop-up list.
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Command Line Interface
To get average CPU utilization across your Amazon EC2 instances
Enter the get-metric-statistics command with the following parameters. For more information
about the get-metric-statistics command, see get-metric-statistics in the AWS Command Line
Interface Reference.
C:\> aws cloudwatch get-metric-statistics --metric-name CPUUtilization --starttime 2014-02-11T23:18:00 --end-time 2014-02-12T23:18:00 --period 3600 --namespace
AWS/EC2 --statistics "Average" "SampleCount"
The AWS CLI returns the following:
{
"Datapoints": [
{
"SampleCount": 238.0,
"Timestamp": "2014-02-12T07:18:00Z",
"Average": 0.038235294117647062,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T09:18:00Z",
"Average": 0.16670833333333332,
"Unit": "Percent"
},
{
"SampleCount": 238.0,
"Timestamp": "2014-02-11T23:18:00Z",
"Average": 0.041596638655462197,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T16:18:00Z",
"Average": 0.039458333333333345,
"Unit": "Percent"
},
{
"SampleCount": 239.0,
"Timestamp": "2014-02-12T21:18:00Z",
"Average": 0.041255230125523033,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T01:18:00Z",
"Average": 0.044583333333333336,
"Unit": "Percent"
},
{
"SampleCount": 239.0,
"Timestamp": "2014-02-12T18:18:00Z",
"Average": 0.043054393305439344,
"Unit": "Percent"
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},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T13:18:00Z",
"Average": 0.039458333333333345,
"Unit": "Percent"
},
{
"SampleCount": 238.0,
"Timestamp": "2014-02-12T15:18:00Z",
"Average": 0.041260504201680689,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T19:18:00Z",
"Average": 0.037666666666666668,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T06:18:00Z",
"Average": 0.037541666666666675,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T20:18:00Z",
"Average": 0.039333333333333338,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T08:18:00Z",
"Average": 0.039250000000000014,
"Unit": "Percent"
},
{
"SampleCount": 239.0,
"Timestamp": "2014-02-12T03:18:00Z",
"Average": 0.037740585774058588,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T11:18:00Z",
"Average": 0.039500000000000007,
"Unit": "Percent"
},
{
"SampleCount": 238.0,
"Timestamp": "2014-02-12T02:18:00Z",
"Average": 0.039789915966386563,
"Unit": "Percent"
},
{
"SampleCount": 238.0,
"Timestamp": "2014-02-12T22:18:00Z",
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"Average": 0.039705882352941181,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T14:18:00Z",
"Average": 0.082458333333333328,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T05:18:00Z",
"Average": 0.04287500000000001,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T17:18:00Z",
"Average": 0.039458333333333345,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T10:18:00Z",
"Average": 0.083416666666666667,
"Unit": "Percent"
},
{
"SampleCount": 236.0,
"Timestamp": "2014-02-12T00:18:00Z",
"Average": 0.036567796610169498,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T12:18:00Z",
"Average": 0.039541666666666676,
"Unit": "Percent"
},
{
"SampleCount": 240.0,
"Timestamp": "2014-02-12T04:18:00Z",
"Average": 0.043000000000000003,
"Unit": "Percent"
}
],
"Label": "CPUUtilization"
}
Get Statistics Aggregated by Auto Scaling Group
This scenario shows you how to use the AWS Management Console, the get-metric-statistics
command, or the GetMetricStatistics API with the DiskWriteBytes metric to retrieve the total bytes
written to disk for one Auto Scaling group. The total is computed for one-minute periods for a 24-hour
interval across all EC2 instances in the specified AutoScalingGroupName.
Note
Start and end times must be within the last 14 days.
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We assume for this example that an EC2 application is running and has an Auto Scaling group named
test-group-1.
AWS Management Console
To display total DiskWriteBytes for an Auto-Scaled EC2 application
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, click Metrics.
In the CloudWatch Metrics by Category pane, under EC2 Metrics, select By Auto Scaling Group.
5.
The metrics available for Auto Scaling groups are displayed in the upper pane.
Select the row that contains DiskWriteBytes.
A graph showing DiskWriteBytes for all EC2 instances appears in the details pane.
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6.
To change the Statistic, e.g., Average, for the metric, choose a different value from the pop-up list.
7.
To change the Period, e.g., 5 Minutes, to view data in more granular detail, choose a different value
from the pop-up list.
Command Line Interface
To get total DiskWriteBytes for an auto-scaled EC2 application
Enter the get-metric-statistics command with the following parameters. For more information
about the get-metric-statistics command, see get-metric-statistics in the AWS Command Line
Interface Reference.
C:\> aws cloudwatch get-metric-statistics --metric-name DiskWriteBytes --starttime 2014-02-16T23:18:00 --end-time 2014-02-18T23:18:00 --period 360 --namespace
AWS/EC2 --statistics "Sum" "SampleCount" --dimensions Name=AutoScalingGroup
Name,Value=test-group-1
The AWS CLI returns the following:
{
"Datapoints": [
{
"SampleCount": 18.0,
"Timestamp": "2014-02-19T21:36:00Z",
"Sum": 0.0,
"Unit": "Bytes"
},
{
"SampleCount": 5.0,
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"Timestamp": "2014-02-19T21:42:00Z",
"Sum": 0.0,
"Unit": "Bytes"
}
],
"Label": "DiskWriteBytes"
}
Get Statistics Aggregated by Image (AMI) ID
This scenario shows you how to use the AWS Management Console, the get-metric-statistics
command, or the GetMetricStatistics API to determine average CPU utilization for all instances
that match a given image ID. The average is over 60-second time intervals for a one-day period.
Note
Start and end times must be within the last 14 days.
In this scenario, the EC2 instances are running an image ID of ami-c5e40dac.
AWS Management Console
To display the average CPU utilization for an image ID
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
In the navigation pane, click Metrics.
4.
In the CloudWatch Metrics by Category pane, under EC2 Metrics, select By Image (AMI) Id.
5.
The metrics available for image IDs appear in the upper pane.
Select a row that contains CPUUtilization and an image ID.
A graph showing average CPUUtilization for all EC2 instances based on the ami-c5e40dac
image ID appears in the details pane.
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6.
To change the Statistic, e.g., Average, for the metric, choose a different value from the pop-up list.
7.
To change the Period, e.g., 5 Minutes, to view data in more granular detail, choose a different value
from the pop-up list.
Command Line Interface
To get the average CPU utilization for an image ID
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Enter the get-metric-statistics command as in the following example. For more information about
the get-metric-statistics command, see get-metric-statistics in the AWS Command Line Interface
Reference.
C:\> aws cloudwatch get-metric-statistics --metric-name CPUUtilization --starttime 2014-02-10T00:00:00 --end-time 2014-02-11T00:00:00 --period 3600 --statist
ics Average --namespace AWS/EC2 --dimensions Name="ImageId",Value=ami-3c47a355"
The AWS CLI returns the following:
{
"Datapoints": [
{
"Timestamp": "2014-02-10T07:00:00Z",
"Average": 0.041000000000000009,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T14:00:00Z",
"Average": 0.079579831932773085,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T06:00:00Z",
"Average": 0.036000000000000011,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T13:00:00Z",
"Average": 0.037625000000000013,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T18:00:00Z",
"Average": 0.042750000000000003,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T21:00:00Z",
"Average": 0.039705882352941188,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T20:00:00Z",
"Average": 0.039375000000000007,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T02:00:00Z",
"Average": 0.041041666666666671,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T01:00:00Z",
"Average": 0.041083333333333354,
"Unit": "Percent"
},
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{
"Timestamp": "2014-02-10T23:00:00Z",
"Average": 0.038016877637130804,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T15:00:00Z",
"Average": 0.037666666666666668,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T12:00:00Z",
"Average": 0.039291666666666676,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T03:00:00Z",
"Average": 0.036000000000000004,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T04:00:00Z",
"Average": 0.042666666666666672,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T19:00:00Z",
"Average": 0.038305084745762719,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T22:00:00Z",
"Average": 0.039291666666666676,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T09:00:00Z",
"Average": 0.17126050420168065,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T08:00:00Z",
"Average": 0.041166666666666678,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T11:00:00Z",
"Average": 0.082374999999999962,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T17:00:00Z",
"Average": 0.037625000000000013,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T10:00:00Z",
"Average": 0.039458333333333345,
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"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T05:00:00Z",
"Average": 0.039250000000000007,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T00:00:00Z",
"Average": 0.037625000000000013,
"Unit": "Percent"
},
{
"Timestamp": "2014-02-10T16:00:00Z",
"Average": 0.041512605042016815,
"Unit": "Percent"
}
],
"Label": "CPUUtilization"
}
The operation returns statistics that are one-minute values for the one-day interval. Each value represents
an average CPU utilization percentage for EC2 instances running the specified machine image.
Graphing Metrics
After you launch an instance, you can go to the Amazon EC2 console and view the instance's monitoring
graphs. They're displayed when you select the instance on the Instances page in the EC2 Dashboard.
A Monitoring tab is displayed next to the instance's Description tab. The following graphs are available:
•
•
•
•
•
•
•
•
Average CPU Utilization (Percent)
Average Disk Reads (Bytes)
Average Disk Writes (Bytes)
Maximum Network In (Bytes)
Maximum Network Out (Bytes)
Summary Disk Read Operations (Count)
Summary Disk Write Operations (Count)
Summary Status (Any)
• Summary Status Instance (Count)
• Summary Status System (Count)
You can also use the CloudWatch console to graph metric data generated by Amazon EC2 and other
AWS services to make it easier to see what's going on. You can use the following procedures to graph
metrics in CloudWatch.
Contents
• Graph a Metric (p. 228)
• Graph a Metric Across Resources (p. 229)
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Graph a Metric
You can select a metric and create a graph of the data in CloudWatch. For example, you can select the
CPUUtilization metric for an Amazon EC2 instance and display a graph of CPU usage over time for that
instance.
To graph a metric
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints in the Amazon Web Services General Reference.
3.
4.
In the navigation pane, click Metrics.
In the CloudWatch Metrics by Category pane, use the Search Metrics box and categories to find
a metric by metric name, AWS resource, or other metadata.
Use the scroll bar and next and previous arrows above the metrics list to page through the full list of
metrics
Select the metric to view, for example, CPUUtilization. A graph appears in the details pane.
5.
6.
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7.
To save this graph and access it later, in the details pane, under Tools, click Copy URL, and then
in the Copy Graph URL dialog box, select the URL and paste it into your browser.
Graph a Metric Across Resources
You can graph a metric across all resources to see everything on one graph. For example, you can graph
the CPUUtilization metric for all Amazon EC2 instances on one graph.
To graph a metric across resources
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
In the navigation pane, click Metrics.
4.
In the CloudWatch Metrics by Category pane, select a metric category. For example, under EC2
Metrics, select Per-Instance Metrics.
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5.
6.
In the metric list, in the Metric Name column, click a metric. For example CPUUtilization.
At the top of the metric list, click Select All.
The graph shows all data for all occurrences of the selected metric. In the example below, CPUUtilization for all Amazon EC2 instances is shown.
7.
To save this graph and access it later, in the details pane, under Tools, click Copy URL, and then
in the Copy Graph URL dialog box, select the URL and paste it into your browser.
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Create a CloudWatch Alarm
You can create an Amazon CloudWatch alarm that monitors any one of your Amazon EC2 instance's
CloudWatch metrics. CloudWatch will automatically send you a notification when the metric reaches a
threshold you specify. You can create a CloudWatch alarm on the Amazon EC2 console of the AWS
Management Console, or you can use the CloudWatch console and configure more advanced options.
Contents
• Send Email Based on CPU Usage Alarm (p. 231)
• Send Email Based on Load Balancer Alarm (p. 233)
• Send Email Based on Storage Throughput Alarm (p. 235)
Send Email Based on CPU Usage Alarm
This scenario walks you through how to use the AWS Management Console or the command line interface
to create an Amazon CloudWatch alarm that sends an Amazon Simple Notification Service email message
when the alarm changes state from OK to ALARM.
In this scenario, you configure the alarm to change to the ALARM state when the average CPU use of
an EC2 instance exceeds 70 percent for two consecutive five-minute periods.
AWS Management Console
To create an alarm that sends email based on CPU usage
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
In the navigation pane, click Alarms.
4.
Click Create Alarm, and then in CloudWatch Metrics by Category, select a metric category, for
example, EC2 Metrics.
In the list of metrics, select a row that contains CPUUtilization for a specific instance ID.
5.
A graph showing average CPUUtilization for a single instance appears in the lower pane.
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6.
7.
Select Average from the Statistic drop-down list.
Select a period from the Period drop-down list, for example: 5 minutes.
8.
Click Next, and then under Alarm Threshold, in the Name field, enter a unique name for the alarm,
for example: myHighCpuAlarm.
9.
In the Description field, enter a description of the alarm, for example: CPU usage exceeds 70
percent.
10. In the is drop-down list, select >.
11. In the box next to the is drop-down list, enter 70 and in the for field, enter 10.
A graphical representation of the threshold is shown under Alarm Preview.
12. Under Actions, in the Whenever this alarm drop-down list, select State is ALARM.
13. In the Send notification to drop-down list, select an existing Amazon SNS topic or create a new
one.
14. To create a new Amazon SNS topic, select New list.
In the Send notification to field, enter a name for the new Amazon SNS topic for example: myHighCpuAlarm, and in the Email list field, enter a comma-separated list of email addresses to be notified
when the alarm changes to the ALARM state.
15. Click Create Alarm to complete the alarm creation process.
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Command Line Interface
To send an Amazon Simple Notification Service email message when CPU utilization
exceeds 70 percent
1.
Set up an Amazon Simple Notification Service topic or retrieve the Topic Resource Name of the
topic you intend to use. For help on setting up an Amazon Simple Notification Service topic, see Set
Up Amazon Simple Notification Service.
2.
Create an alarm with the put-metric-alarm command. For more information about the putmetric-alarm command, see put-metric-alarm in the AWS Command Line Interface Reference.
Use the values from the following example, but replace the values for InstanceID and alarm-actions with your own values.
C:\> aws cloudwatch
put-metric-alarm --alarm-name cpu-mon --alarm-description
"Alarm when CPU exceeds 70%" --metric-name CPUUtilization --namespace AWS/EC2
--statistic Average --period 300
--threshold 70 --comparison-operator GreaterThanThreshold -dimensions Name=InstanceId,Value=i-12345678 --evaluation-periods 2 --alarmactions arn:aws:sns:us-east-1:111122223333:MyTopic --unit Percent
3.
The AWS CLI returns to the command prompt if the command succeeds.
Test the alarm by forcing an alarm state change with the set-alarm-state command.
a.
Change the alarm state from INSUFFICIENT_DATA to OK:
C:\> aws cloudwatch set-alarm-state
"initializing" --state-value OK
b.
--alarm-name cpu-mon --state-reason
The AWS CLI returns to the command prompt if the command succeeds.
Change the alarm state from OK to ALARM:
C:\> aws cloudwatch set-alarm-state --alarm-name cpu-mon --state-reason
"initializing" --state-value ALARM
c.
The AWS CLI returns to the command prompt if the command succeeds.
Check that an email has been received.
Send Email Based on Load Balancer Alarm
This scenario walks you through how to use the AWS Management Console or the command line interface
to set up an Amazon Simple Notification Service notification and configure an alarm that monitors load
balancer latency exceeding 100 ms.
AWS Management Console
To create a load balancer alarm that sends email
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
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3.
4.
In the navigation pane, click Alarms.
Click Create Alarm, and then in the CloudWatch Metrics by Category pane, select a metric category,
for example, ELB Metrics.
5.
In the list of metrics, select a row that contains Latency for a specific load balancer.
A graph showing average Latency for a single load balancer appears in the lower pane.
6.
7.
8.
Select Average from the Statistic drop-down list.
Select 1 Minute from the Period drop-down list.
Click Next, and then under Alarm Threshold, in the Name field, enter a unique name for the alarm,
for example: myHighCpuAlarm.
9.
In the Description field, enter a description of the alarm, for example: Alarm when Latency exceeds 100ms.
10. In the is drop-down list, select >.
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11. In the box next to the is drop-down list, enter 0.1 and in the for field, enter 3.
A graphical representation of the threshold is shown under Alarm Preview.
12. Under Actions, in the Whenever this alarm drop-down list, select State is ALARM.
13. In the Send notification to drop-down list, select an existing Amazon SNS topic or create a new
one.
14. To create a new Amazon SNS topic, select New list.
In the Send notification to field, enter a name for the new Amazon SNS topic for example: myHighCpuAlarm, and in the Email list field, enter a comma-separated list of email addresses to be notified
when the alarm changes to the ALARM state.
15. Click Create Alarm to complete the alarm creation process.
Command Line Interface
To send an Amazon Simple Notification Service email message when LoadBalancer Latency
Exceeds 100 milliseconds
1.
2.
Create an Amazon Simple Notification Service topic. See instructions for creating an Amazon SNS
topic in Set Up Amazon Simple Notification Service.
Use the put-metric-alarm command to create an alarm. For more information about the putmetric-alarm command, see put-metric-alarm in the AWS Command Line Interface Reference.
C:\> aws cloudwatch put-metric-alarm --alarm-name lb-mon --alarm-description
"Alarm when Latency exceeds 100ms" --metric-name Latency --namespace AWS/ELB
--statistic Average --period 60 --threshold 100 --comparison-operator
GreaterThanThreshold --dimensions Name=LoadBalancerName,Value=my-server -evaluation-periods 3 --alarm-actions arn:aws:sns:us-east-1:1234567890:mytopic --unit Milliseconds
3.
The AWS CLI returns to the command prompt if the command succeeds.
Test the alarm.
• Force an alarm state change to ALARM:
C:\> aws cloudwatch set-alarm-state --alarm-name lb-mon --state-reason
"initializing" --state OK
C:\> aws cloudwatch set-alarm-state --alarm-name lb-mon --state-reason
"initializing" --state ALARM
The AWS CLI returns to the command prompt if the command succeeds.
• Check that an email has been received.
Send Email Based on Storage Throughput Alarm
This scenario walks you through how to use the AWS Management Console or the command line interface
to set up an Amazon Simple Notification Service notification and to configure an alarm that sends email
when EBS exceeds 100 MB throughput.
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AWS Management Console
To create a storage throughput alarm that sends email
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region that meets your needs.
For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, click Alarms.
Click Create Alarm, and then in the CloudWatch Metrics by Category pane, select a metric category,
for example, EBS Metrics.
In the list of metrics, select a row that contains VolumeWriteBytes for a specific VolumeId.
5.
A graph showing average VolumeWriteBytes for a single volume appears in the lower pane.
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6.
7.
Select Average from the Statistic drop-down list.
Select 5 Minutes from the Period drop-down list.
8.
Click Next, and then under Alarm Threshold, in the Name field, enter a unique name for the alarm,
for example: myHighWriteAlarm.
9.
In the Description field, enter a description of the alarm, for example: VolumeWriteBytes exceeds
100,000 KiB/s.
10. In the is drop-down list, select >.
11. In the box next to the is drop-down list, enter 100000 and in the for field, enter 15.
A graphical representation of the threshold is shown under Alarm Preview.
12. Under Actions, in the Whenever this alarm drop-down list, select State is ALARM.
13. In the Send notification to drop-down list, select an existing Amazon SNS topic or create a new
one.
14. To create a new Amazon SNS topic, select New list.
In the Send notification to field, enter a name for the new Amazon SNS topic for example: myHighCpuAlarm, and in the Email list field, enter a comma-separated list of email addresses to be notified
when the alarm changes to the ALARM state.
15. Click Create Alarm to complete the alarm creation process.
Command Line Interface
To send an Amazon Simple Notification Service email message when EBS exceeds 100
MB throughput
1.
2.
Create an Amazon Simple Notification Service topic. See instructions for creating an Amazon SNS
topic in Set Up Amazon Simple Notification Service.
Use the put-metric-alarm command to create an alarm. For more information about the putmetric-alarm command, see put-metric-alarm in the AWS Command Line Interface Reference.
C:\> aws cloudwatch put-metric-alarm --alarm-name ebs-mon --alarm-description
"Alarm when EBS volume exceeds 100MB throughput" --metric-name VolumeRead
Bytes --namespace AWS/EBS --statistic Average --period 300 --threshold
100000000 --comparison-operator GreaterThanThreshold --dimensions
Name=VolumeId,Value=my-volume-id --evaluation-periods 3 --alarm-actions
arn:aws:sns:us-east-1:1234567890:my-alarm-topic --insufficient-data-actions
arn:aws:sns:us-east-1:1234567890:my-insufficient-data-topic
3.
The AWS CLI returns to the command prompt if the command succeeds.
Test the alarm.
• Force an alarm state change to ALARM.
C:\> aws cloudwatch set-alarm-state --alarm-name lb-mon --state-reason
"initializing" --state-value OK
C:\> aws cloudwatch set-alarm-state --alarm-name lb-mon --state-reason
"initializing" --state-value ALARM
C:\> aws cloudwatch set-alarm-state --alarm-name lb-mon --state-reason
"initializing" --state-value INSUFFICIENT_DATA
• Check that two emails have been received.
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Create Alarms That Stop or Terminate an Instance
Using Amazon CloudWatch alarm actions, you can create alarms that automatically stop or terminate
your Amazon Elastic Compute Cloud (Amazon EC2) instances when you no longer need them to be
running. For example, you might have instances dedicated to batch payroll processing jobs or scientific
computing tasks that run for a period of time and then complete their work. Rather than leave those instances sitting idle (and accruing charges), you can stop or terminate them which can help you to save
money. The main difference between using the stop and the terminate alarm actions is that you can
easily restart a stopped instance if you need to run it again later, and you can keep the same instance
ID and root volume. However, you cannot restart a terminated instance. Instead, you must launch a new
instance.
You can add the stop or terminate alarm actions to any alarm that is set on an Amazon EC2 instance
metric, including basic and detailed monitoring metrics provided by Amazon CloudWatch (in the AWS/EC2
namespace), as well as any custom metrics that include the “InstanceId=” dimension, as long as the InstanceId value refers to a valid running Amazon EC2 instance.
Contents
• Adding Actions to Amazon CloudWatch Alarms (p. 238)
• Amazon CloudWatch Alarm Action Scenarios (p. 248)
Adding Actions to Amazon CloudWatch Alarms
You can configure alarm actions using either the Amazon EC2 console or the Amazon CloudWatch
console, or you can use the Amazon CloudWatch command line interface (CLI), API, or the AWS SDKs.
For information about using the Amazon CloudWatch API with the AWS SDKs, see Sample Code & Libraries.
Using the Amazon EC2 Console to Create an Alarm to Stop an Instance
You can create an alarm that stops an Amazon EC2 instance when a certain threshold has been met.
For example, you may run development or test instances and occasionally forget to shut them off. You
can create an alarm that is triggered when the average CPU utilization percentage has been lower than
10 percent for 24 hours, signaling that it is idle and no longer in use.You can adjust the threshold, duration,
and period to suit your needs, plus you can add an Amazon Simple Notification Service (Amazon SNS)
notification, so that you will receive an email when the alarm is triggered.
Amazon EC2 instances that use an Amazon Elastic Block Store volume as the root device can be stopped
or terminated, whereas instances that use the instance store as the root device can only be terminated.
Note
If you are using an AWS Identity and Access Management (IAM) account to create or modify
an alarm, you must have the following Amazon EC2 permissions: ec2:DescribeInstanceStatus, ec2:DescribeInstances, ec2:StopInstances, and ec2:TerminateInstances in order for the alarm action to be performed. If you have read/write permissions for
Amazon CloudWatch but not for Amazon EC2, you can still create an alarm but the stop or terminate actions won’t be performed on the Amazon EC2 instance. However, if you are later
granted permission to use the associated Amazon EC2 APIs, the alarm actions you created
earlier will be performed. For more information about IAM permissions, see Permissions and
Policies in Using IAM.
If you are using an IAM role (e.g. Amazon EC2 instance profile), you cannot stop or terminate
the instance using alarm actions. However, you can still see the alarm state and perform any
other actions such as Amazon SNS notifications or Auto Scaling policies.
If you are using temporary security credentials granted using the AWS Security Token Service
(AWS STS), you cannot stop or terminate an Amazon EC2 instance using alarm actions.
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To create an alarm to stop an idle instance
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, under INSTANCES, click Instances.
In the upper pane, right-click an instance, and then click Add/Edit Alarms.
5.
Or, you can also select the instance, and then in the lower pane on the Monitoring tab, click Create
Alarm.
In the Alarm Details for dialog box, click Create Alarm.
6.
If you want to receive an email when the alarm is triggered, in the Create Alarm for dialog box, in
the Send a notification to box, select an existing Amazon SNS topic, or click Create Topic to create
a new one.
If you create a new topic, in the Send a notification to box type a name for the topic, and then in
the With these recipients box, type the email addresses of the recipients (separated by commas).
Later, after you create the alarm, you will receive a subscription confirmation email that you must
accept before you will get email for this topic.
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7.
8.
Select the Take the action check box, and then choose the Stop radio button.
In the Whenever boxes, choose the statistic you want to use and then select the metric. In this example, choose Average and CPU Utilization.
9. In the Is boxes, define the metric threshold. In this example, enter 10 percent.
10. In the For at least box, choose the sampling period for the alarm. In this example, enter 24 consecutive periods of one hour.
11. To change the name of the alarm, in the Name this alarm box, type a new name.
If you don't type a name for the alarm, Amazon CloudWatch automatically creates one for you.
Note
You can adjust the alarm configuration based on your own requirements before creating
the alarm, or you can edit them later. This includes the metric, threshold, duration, action,
and notification settings. However, after you create an alarm, you cannot edit its name later.
12. Click Create Alarm.
Using the Amazon EC2 Console to Create an Alarm that Terminates an Instance
You can create an alarm that terminates an EC2 instance automatically when a certain threshold has
been met (as long as termination protection is not enabled for the instance). For example, you might want
to terminate an instance when it has completed its work, and you don’t need the instance again. If you
might want to use the instance later, you should stop the instance instead of terminating it. For information
about enabling and disabling termination protection for an instance, see Enabling Termination Protection
for an Instance (p. 148).
Note
If you are using an AWS Identity and Access Management (IAM) account to create or modify
an alarm, you must have the following Amazon EC2 permissions: ec2:DescribeInstanceStatus, ec2:DescribeInstances, ec2:StopInstances, and ec2:TerminateInstances in order for the alarm action to be performed. If you have read/write permissions for
Amazon CloudWatch but not for Amazon EC2, you can still create an alarm but the stop or terminate actions won’t be performed on the Amazon EC2 instance. However, if you are later
granted permission to use the associated Amazon EC2 APIs, the alarm actions you created
earlier will be performed. For more information about IAM permissions, see Permissions and
Policies in Using IAM.
If you are using an IAM role (e.g. Amazon EC2 instance profile), you cannot stop or terminate
the instance using alarm actions. However, you can still see the alarm state and perform any
other actions such as Amazon SNS notifications or Auto Scaling policies.
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If you are using temporary security credentials granted using the AWS Security Token Service
(AWS STS), you cannot stop or terminate an Amazon EC2 instance using alarm actions.
To create an alarm to terminate an idle instance
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, under INSTANCES, click Instances.
In the upper pane, right-click an instance, and then click Add/Edit Alarms.
5.
Or, select the instance and then in the lower pane, on the Monitoring tab, click Create Alarm.
In the Alarm Details for dialog box, click Create Alarm.
6.
If you want to receive an email when the alarm is triggered, in the Create Alarm for dialog box, in
the Send a notification to box, select an existing SNS topic, or click Create Topic to create a new
one.
If you create a new topic, in the Send a notification to box type a name for the topic, and then in
the With these recipients box, type the email addresses of the recipients (separated by commas).
Later, after you create the alarm, you will receive a subscription confirmation email that you must
accept before you will get email for this topic.
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7.
8.
Select the Take the action check box, and then choose the Terminate radio button.
In the Whenever boxes, choose the statistic you want to use and then select the metric. In this example, choose Average and CPU Utilization.
9. In the Is boxes, define the metric threshold. In this example, enter 10 percent.
10. In the For at least box, choose the sampling period for the alarm. In this example, enter 24 consecutive periods of one hour.
11. To change the name of the alarm, in the Name this alarm box, type a new name.
If you don't type a name for the alarm, Amazon CloudWatch automatically creates one for you.
Note
You can adjust the alarm configuration based on your own requirements before creating
the alarm, or you can edit them later. This includes the metric, threshold, duration, action,
and notification settings. However, after you create an alarm, you cannot edit its name later.
12. Click Create Alarm.
Using the Amazon CloudWatch Console to Create an Alarm that Stops an
Instance
You can create an alarm that stops an Amazon EC2 instance when a certain threshold has been met.
For example, you may run development or test instances and occasionally forget to shut them off. You
can create an alarm that is triggered when the average CPU utilization percentage has been lower than
10 percent for 24 hours, signaling that it is idle and no longer in use.You can adjust the threshold, duration,
and period to suit your needs, plus you can add an Amazon Simple Notification Service (Amazon SNS)
notification, so that you will receive an email when the alarm is triggered.
Amazon CloudWatch alarm actions can stop an EBS-backed Amazon EC2 instances but they cannot
stop instance store-backed Amazon EC2 instances. However, Amazon CloudWatch alarm actions can
terminate either type of Amazon EC2 instance.
Note
If you are using an AWS Identity and Access Management (IAM) account to create or modify
an alarm, you must have the following Amazon EC2 permissions: ec2:DescribeInstanceStatus, ec2:DescribeInstances, ec2:StopInstances, and ec2:TerminateInstances in order for the alarm action to be performed. If you have read/write permissions for
Amazon CloudWatch but not for Amazon EC2, you can still create an alarm but the stop or terminate actions won’t be performed on the Amazon EC2 instance. However, if you are later
granted permission to use the associated Amazon EC2 APIs, the alarm actions you created
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earlier will be performed. For more information about IAM permissions, see Permissions and
Policies in Using IAM.
If you are using an IAM role (e.g. Amazon EC2 instance profile), you cannot stop or terminate
the instance using alarm actions. However, you can still see the alarm state and perform any
other actions such as Amazon SNS notifications or Auto Scaling policies.
If you are using temporary security credentials granted using the AWS Security Token Service
(AWS STS), you cannot stop or terminate an Amazon EC2 instance using alarm actions.
To create an alarm to stop an idle instance
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, click Alarms.
Click Create Alarm, and then in the CloudWatch Metrics by Category pane, under EC2 Metrics,
select Per-Instance Metrics.
In the list of metrics, select the instance and metric you want to create an alarm for. You can also
type an instance ID in the search box to go the instance that you want.
Select Average from the Statistic drop-down list.
Select a period from the Period drop-down list, for example: 1 Day.
5.
6.
7.
8.
Click Next, and then under Alarm Threshold, in the Name field, enter a unique name for the alarm,
for example: Stop EC2 instance.
9.
In the Description field, enter a description of the alarm, for example: Stop EC2 instance when
CPU is idle for too long.
10. In the is drop-down list, select <.
11. In the box next to the is drop-down list, enter 10 and in the for field, enter 1440.
A graphical representation of the threshold is shown under Alarm Preview.
12. Under Actions, click EC2 Action.
13. In the Whenever this alarm drop-down list, select State is ALARM.
14. In the Take this action drop-down list, select Stop this instance.
15. Click Notification, and then in the Send notification to drop-down list, select an existing Amazon
SNS topic or create a new one.
16. To create a new Amazon SNS topic, select New list.
In the Send notification to field, enter a name for the new Amazon SNS topic for example:
Stop_EC2_Instance, and in the Email list field, enter a comma-separated list of email addresses
to be notified when the alarm changes to the ALARM state.
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Important
If you are creating a new topic or adding email addresses to an existing topic, each email
address that you add will be sent a topic subscription confirmation email. You must confirm
the subscription by clicking the included link before notifications will be sent to a new email
address.
17. Click Create Alarm to complete the alarm creation process.
Using the Amazon CloudWatch Console to Create an Alarm to Terminate
an Idle Instance
You can create an alarm that terminates an Amazon EC2 instance automatically when a certain threshold
has been met, as long as termination protection is disabled on the instance. For example, you might want
to terminate an instance when it has completed its work, and you don’t need the instance again. If you
might want to use the instance later, you should stop the instance instead of terminating it. For information
about disabling termination protection on an instance, see Enabling Termination Protection for an Instance (p. 148).
Note
If you are using an AWS Identity and Access Management (IAM) account to create or modify
an alarm, you must have the following Amazon EC2 permissions: ec2:DescribeInstanceStatus, ec2:DescribeInstances, ec2:StopInstances, and ec2:TerminateInstances in order for the alarm action to be performed. If you have read/write permissions for
Amazon CloudWatch but not for Amazon EC2, you can still create an alarm but the stop or terminate actions won’t be performed on the Amazon EC2 instance. However, if you are later
granted permission to use the associated Amazon EC2 APIs, the alarm actions you created
earlier will be performed. For more information about IAM permissions, see Permissions and
Policies in Using IAM.
If you are using an IAM role (e.g. Amazon EC2 instance profile), you cannot stop or terminate
the instance using alarm actions. However, you can still see the alarm state and perform any
other actions such as Amazon SNS notifications or Auto Scaling policies.
If you are using temporary security credentials granted using the AWS Security Token Service
(AWS STS), you cannot stop or terminate an Amazon EC2 instance using alarm actions.
To create an alarm to terminate an idle instance
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
3.
4.
In the navigation pane, click Alarms.
In the upper pane, click Create Alarm.
5.
Click Create Alarm, and then in the CloudWatch Metrics by Category pane, under EC2 Metrics,
select Per-Instance Metrics.
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6.
7.
8.
9.
In the list of metrics, select the instance and metric you want to create an alarm for. You can also
type an instance ID in the search box to go the instance that you want.
Select Average from the Statistic drop-down list.
Select a period from the Period drop-down list, for example: 1 Day.
Click Next, and then under Alarm Threshold, in the Name field, enter a unique name for the alarm,
for example: Terminate EC2 instance.
10. In the Description field, enter a description of the alarm, for example: Terminate EC2 instance
when CPU is idle for too long.
11. In the is drop-down list, select <.
12. In the box next to the is drop-down list, enter 10 and in the for field, enter 1440.
A graphical representation of the threshold is shown under Alarm Preview.
13. Under Actions, click EC2 Action.
14. In the Whenever this alarm drop-down list, select State is ALARM.
15. In the Take this action drop-down list, select Terminate this instance.
16. Click Notification, and then in the Send notification to drop-down list, select an existing Amazon
SNS topic or create a new one.
17. To create a new Amazon SNS topic, select New list.
In the Send notification to field, enter a name for the new Amazon SNS topic for example: Terminate_EC2_Instance, and in the Email list field, enter a comma-separated list of email addresses
to be notified when the alarm changes to the ALARM state.
Important
If you are creating a new topic or adding email addresses to an existing topic, each email
address that you add will be sent a topic subscription confirmation email. You must confirm
the subscription by clicking the included link before notifications will be sent to a new email
address.
18. Click Create Alarm to complete the alarm creation process.
Using the Amazon CloudWatch Console to View the History of Triggered
Alarms and Actions
You can view alarm and action history in the Amazon CloudWatch console. Amazon CloudWatch keeps
the last two weeks’ worth of alarm and action history.
To view the history of triggered alarms and actions
1.
2.
Open the Amazon CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
If necessary, change the region. From the navigation bar, select the region where your instance is
running. For more information, see Regions and Endpoints.
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3.
4.
In the navigation pane, click Alarms.
In the upper pane, select the alarm with the history that you want to view.
5.
In the lower pane, the Details tab shows the most recent state transition along with the time and
metric values.
6.
Click the History tab to view the most recent history entries.
Using the CLI or the API to Create an Alarm to Stop or Terminate an Instance
If you are using either the AWS CLI or the CloudWatch API, or if you are using the AWS SDKs with the
API, you can create an Amazon CloudWatch alarm using an Amazon EC2 instance metric, and then add
an action using the action’s dedicated Amazon Resource Name (ARN). You can add the action to any
alarm state, and you can specify the region for each action. The region must match the region to which
you send the put-metric-alarm request.
Action
ARN (with region)
Stop
arn:aws:automate:us-east-1:ec2:stop
Terminate
arn:aws:automate:us-east-1:ec2:terminate
For information about using the Amazon CloudWatch API with the AWS SDKs, see Sample Code & Libraries.
Note
If you are using an AWS Identity and Access Management (IAM) account to create or modify
an alarm, you must have the following Amazon EC2 permissions: ec2:DescribeInstanceStatus, ec2:DescribeInstances, ec2:StopInstances, and ec2:TerminateInstances in order for the alarm action to be performed. If you have read/write permissions for
Amazon CloudWatch but not for Amazon EC2, you can still create an alarm but the stop or terminate actions won’t be performed on the Amazon EC2 instance. However, if you are later
granted permission to use the associated Amazon EC2 APIs, the alarm actions you created
earlier will be performed. For more information about IAM permissions, see Permissions and
Policies in Using IAM.
If you are using an IAM role (e.g. Amazon EC2 instance profile), you cannot stop or terminate
the instance using alarm actions. However, you can still see the alarm state and perform any
other actions such as Amazon SNS notifications or Auto Scaling policies.
If you are using temporary security credentials granted using the AWS Security Token Service
(AWS STS), you cannot stop or terminate an Amazon EC2 instance using alarm actions.
To create an alarm to stop an instance using the CLI
You can use the arn:aws:automate:us-east-1:ec2:stop ARN to stop an Amazon EC2 instance.
The following example shows how to stop an instance if the average CPUUtilization is less than 10 percent
over a 24 hour period.
•
At a command prompt, type:
% aws cloudwatch put-metric-alarm --alarm-name my-Alarm --alarm-description
"Stop the instance when it is idle for a day" --namespace "AWS/EC2" --di
mensions Name=InstanceId,Value=i-abc123 --statistic Average --metric-name
CPUUtilization --comparison-operator LessThanThreshold --threshold 10 -period 86400 --evaluation-periods 4 --alarm-actions arn:aws:automate:useast-1:ec2:stop
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To create an alarm to terminate an instance using the CLI
•
At a command prompt, type:
% aws cloudwatch put-metric-alarm --alarm-name my-Alarm --alarm-description
"Terminate the instance when it is idle for a day" --namespace "AWS/EC2"
--dimensions Name=InstanceId,Value=i-abc123" --statistic Average --metricname CPUUtilization --comparison-operator LessThanThreshold --threshold 1
--period 86400 --evaluation-periods 4 -- alarm-actions arn:aws:automate:useast-1:ec2:terminate
To create an alarm and to stop an instance using the API
The following example request shows how to create an alarm that stops an Amazon EC2 instance.
•
Construct the following request:
http://monitoring.amazonaws.com/
?SignatureVersion=2
&Action=PutMetricAlarm
&Version=2009-05-15
&Namespace=AWS/EC2
&MetricName=CPUUtilization
&Dimension.member.1.Name=instance-id
&Dimension.member.1.Value=i-abc123
&Period=86400
&Statistic=Average
&AlarmName=Stop-EC2-Instance
&ComparisonOperator=LessThanThreshold
&Threshold=10
&EvaluationPeriods=4
&StartTime=2009-01-16T00:00:00
&EndTime=2009-01-16T00:02:00
&Timestamp=2009-01-08-18
&AWSAccessKeyId=XXX YOUR ACCESS KEY XXX
&Signature=%XXX YOUR SIGNATURE XXX%3D
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&AlarmActions.member.1=arn:aws:automate:us-east-1:ec2:stop
To create an alarm and to terminate an instance using the API
The following example request shows how to create an alarm that terminates an Amazon EC2 instance.
•
Construct the following request:
http://monitoring.amazonaws.com/
?SignatureVersion=2
&Action=PutMetricAlarm
&Version=2009-05-15
&Namespace=AWS/EC2
&MetricName=CPUUtilization
&Dimension.member.1.Name=instance-id
&Dimension.member.1.Value=i-abc123
&Period=86400
&Statistic=Average
&AlarmName=Terminate-EC2-Instance
&ComparisonOperator=LessThanThreshold
&Threshold=10
&EvaluationPeriods=4
&StartTime=2009-01-16T00:00:00
&EndTime=2009-01-16T00:02:00
&Timestamp=2009-01-08-18
&AWSAccessKeyId=XXX YOUR ACCESS KEY XXX
&Signature=%XXX YOUR SIGNATURE XXX%3D
&AlarmActions.member.1=arn:aws:automate:us-east-1:ec2:terminate
Amazon CloudWatch Alarm Action Scenarios
You can use the Amazon Elastic Compute Cloud (Amazon EC2) console to create alarm actions that
stop or terminate an Amazon EC2 instance when certain conditions are met. In the following screen
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capture of the console page where you set the alarm actions, we’ve numbered the settings. We’ve also
numbered the settings in the scenarios that follow, to help you create the appropriate actions.
Scenario 1: Stop Idle Development and Test Instances
Create an alarm that stops an instance used for software development or testing when it has been idle
for at least an hour.
Seting Value
Stop
Maximum
CPUUtilization
<=
10%
60 minutes
1
Scenario 2: Stop Idle Instances
Create an alarm that stops an instance and sends an email when the instance has been idle for 24 hours.
Seting Value
Stop and email
Average
CPUUtilization
<=
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Seting Value
5%
60 minutes
24
Scenario 3: Stop Web Servers with Unusually High Traffic
Create an alarm that sends email when an instance exceeds 10 GB of outbound network traffic per day.
Seting Value
Email
Sum
NetworkOut
>
10 GB
1 day
1
Scenario 4: Stop Web Servers with Unusually High Traffic
Create an alarm that stops an instance and send a text message (SMS) if outbound traffic exceeds 1 GB
per hour.
Seting Value
Stop and send SMS
Sum
NetworkOut
>
1 GB
1 hour
1
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Scenario 5: Stop an Instance Experiencing a Memory Leak
Create an alarm that stops an instance when memory utilization reaches or exceeds 90 percent, so that
application logs can be retrieved for troubleshooting.
Note
The MemoryUtilization metric is a custom metric. In order to use the MemoryUtilization metric,
you must install the Monitoring Scripts for Amazon EC2 Instances (p. 253).
Seting Value
Stop
Maximum
MemoryUtilization
>=
90%
1 minute
1
Scenario 6: Stop an Impaired Instance
Create an alarm that stops an instance that fails three consecutive status checks (performed at 5-minute
intervals).
Seting Value
Stop
Average
StatusCheckFailed_System
>=
1
15 minutes
1
Scenario 7:Terminate Instances When Batch Processing Jobs Are Complete
Create an alarm that terminates an instance that runs batch jobs when it is no longer sending results
data.
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Seting Value
Terminate
Maximum
NetworkOut
<=
100,000 bytes
5 minutes
1
The previous scenarios can also be performed using the Amazon CloudWatch console. We’ve numbered
the settings on the console to match the numbered settings in the Amazon EC2 console and the scenarios
that we covered earlier, so you can make a comparison and create an alarm with the appropriate actions.
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Monitoring Scripts for Amazon EC2 Instances
The Amazon CloudWatch Monitoring Scripts for Windows instances demonstrate how to produce and
consume Amazon CloudWatch custom metrics. The scripts for Windows are sample PowerShell scripts
that comprise a fully functional example that reports memory, page file, and disk space utilization metrics
for a Windows instance. You can download the CloudWatch Monitoring Scripts from the Amazon Web
Services (AWS) sample code library and install them on your Windows instances.
Important
These scripts are examples only. They are provided "as is" and are not supported.
Note
Standard Amazon CloudWatch free tier quantities and usage charges for custom metrics apply
to your use of these scripts. For more information, see the Amazon CloudWatch product page.
Amazon CloudWatch Monitoring Scripts for Windows
The Amazon CloudWatch Monitoring Scripts for Windows are sample PowerShell scripts that demonstrate
how to produce and consume Amazon CloudWatch custom metrics. The scripts comprise a fully functional
example that reports memory, page file, and disk space utilization metrics for an Amazon Elastic Compute
Cloud (Amazon EC2) Windows instance.
These monitoring scripts are intended for use with Amazon EC2 instances running Microsoft Windows
Server. The scripts have been tested on the following Amazon Machine Images (AMIs) for both 32-bit
and 64-bit versions:
• Windows Server 2003 R2
• Windows Server 2008
• Windows Server 2008 R2
Contents
• Getting Started (p. 253)
• mon-put-metrics-mem.ps1 (p. 254)
• mon-put-metrics-disk.ps1 (p. 256)
• mon-put-metrics-perfmon.ps1 (p. 258)
• mon-get-instance-stats.ps1 (p. 260)
• Set Up Task Scheduler to Send Metrics Reports to Amazon CloudWatch (p. 261)
Getting Started
The following steps demonstrate how to download, uncompress, and configure the Amazon CloudWatch
Monitoring Scripts on an Amazon EC2 Windows instance.
To download, install, and configure the script
1.
Connect to your Amazon EC2 Windows instance. For information about how to connect to Amazon
EC2 Windows instances, see Connecting to Your Windows Instance Using RDP (p. 139).
2.
3.
Download and install the AWS SDK for .NET onto the EC2 instance that you want to monitor.
Download the .zip file containing the Amazon CloudWatch Monitoring Scripts for Microsoft Windows
Server onto the EC2 instance and unzip it in a location of your preference.
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The AmazonCloudWatchMonitoringWindows.zip package contains these files:
• mon-put-metrics-mem.ps1 —Collects system metrics on an Amazon EC2 Windows instance
(memory, page file utilization) and sends them to Amazon CloudWatch.
• mon-put-metrics-disk.ps1 —Collects system metrics on an Amazon EC2 instance (disk space
utilization) and sends them to Amazon CloudWatch.
• mon-put-metrics-perfmon.ps1 —Collects PerfMon counters on an Amazon EC2 instance and
sends them to Amazon CloudWatch.
• mon-get-instance-stats.ps1—Queries Amazon CloudWatch and displays the most recent utilization statistics for the EC2 instance on which this script is executed.
• awscreds.conf—File template for AWS credentials that stores your access key ID and secret
access key.
• LICENSE.txt—Text file containing the Apache 2.0 license.
• NOTICE.txt—Copyright notice.
4.
Update the awscreds.conf file that you downloaded earlier. The content of this file should use the
following format:
AWSAccessKeyId=YourAccessKeyID
AWSSecretKey=YourSecretAccessKey
Note
This step is optional if you have already created a file for credentials.You can use an existing
file by specifying its location on the command line when you call the scripts. Alternatively,
you can set the environment variable AWS_CREDENTIAL_FILE to point to the file with your
AWS credentials.
For instructions on how to access your credentials, use the following procedure.
As a best practice, do not use the root credentials. Instead, you should create an Identity and Access
Management (IAM) user with a policy that restricts the user to only Amazon CloudWatch operations.
For more information, see Controlling User Access to Your AWS Account.
mon-put-metrics-mem.ps1
This script collects memory and pagefile utilization data on the current system. It then makes a remote
call to Amazon CloudWatch to report the collected data as custom metrics.
Options
Name
Description
-mem_util
Collects and sends the MemoryUtilization metrics in percentages.
This option reports only memory allocated by applications and the
operating system, and excludes memory in cache and buffers.
-mem_used
Collects and sends the MemoryUsed metrics, reported in megabytes.
This option reports only memory allocated by applications and the
operating system, and excludes memory in cache and buffers.
-mem_avail
Collects and sends the MemoryAvailable metrics, reported in
megabytes. This option reports memory available for use by
applications and the operating system.
-page_util
Collects and sends PageUtilization metrics, reported in percentages.
Page utilization is reported for each page file in a windows instance.
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Name
Description
-page_used
Collects and sends PageUsed metrics, reported in megabytes.
-page_avail
Reports available space in page file for all disks.
-memory_units UNITS
Specifies units in which to report memory usage. If not specified,
memory is reported in megabytes. UNITS may be one of the following:
bytes, kilobytes, megabytes, gigabytes.
-aws_credential_file=PATH Provides the location of the file containing AWS credentials.
This parameter cannot be used with the -aws_access_id and
-aws_secret_key parameters.
-aws_access_id=VALUE
Specifies the AWS access key ID to use to identify the caller. Must
be used together with the -aws_secret_key option. Do not use
this option with the -aws_credential_file option.
-aws_secret_key=VALUE
Specifies the AWS secret access key to use to sign the request to
Amazon CloudWatch. Must be used together with the
-aws_access-key_id option. Do not use this option with
-aws_credential_file option.
-whatif
Performs a test run of the script that collects the metrics but does
not actually call Amazon CloudWatch to report the data. This option
also checks that credentials are provided.
-from_scheduler
Use this option when calling the script from task scheduler. When
this option is used, all diagnostic output is suppressed, but error
messages are sent to the log file.
-verbose
Displays detailed information about what the script is doing.
Get-help
mon-put-metrics-mem.ps1
Displays usage information.
-version
Displays the version number of the script.
-logfile
Logfile is used to log error message. Use this along with
–from_scheduler option. If no value is specified for logfile then a
default file is created with the same as the script with .log extension.
Examples
The following examples assume that you have already updated the awscreds.conf file with valid AWS
credentials. If you are not using the awscreds.conf file, provide credentials using the -aws_access_id
and -aws_secret_key arguments.
To collect all available memory metrics using an inline access ID and secret key and send
the data to CloudWatch
•
Run the following command:
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.\mon-put-metrics-mem.ps1 -aws_access_id ThisIsMyAccessKey -aws_secret_key
ThisIsMySecretKey -mem_util -mem_avail -page_avail -page_used -page_util
-memory_units Megabytes
To collect all available memory metrics using a credential file and send the data to
CloudWatch
•
Run the following command:
.\mon-put-metrics-mem.ps1 -aws_credential_file C:\awscreds.conf -mem_util
-mem_used -mem_avail -page_avail -page_used -page_util -memory_units Megabytes
To collect all available memory metrics using credentials stored in environment variables
and send the data to CloudWatch
•
Run the following command:
.\mon-put-metrics-mem.ps1 -mem_util -mem_used -mem_avail -page_avail page_used -page_util -memory_units Megabytes
mon-put-metrics-disk.ps1
This script collects disk space utilization data on the current system. It then makes a remote call to Amazon
CloudWatch to report the collected data as custom metrics.
Options
Name
Description
-disk_space_util
Collects and sends the DiskSpaceUtilization metric for the selected
disks. The metric is reported in percentages.
-disk_space_used
Collects and sends DiskSpaceUsed metric for the selected disks.
The metric is reported by default in gigabytes.
-disk_space_avail
Collects and sends the DiskSpaceAvailable metric for the selected
disks. The metric is reported in gigabytes.
-disk_space_units
UNITS Specifies units in which to report memory usage. If not specified,
memory is reported in gigabytes. UNITS may be one of the following:
bytes, kilobytes, megabytes, gigabytes.
-disk_drive
Selects the drive letter on which to report. To report metrics on the
c and d drives, use the following option -disk_drive C:, D: Values
should be comma separated.
-aws_credential_file
PATH
Provides the location of the file containing AWS credentials. This
parameter cannot be used with the –aws_access_id and
-aws_secret_key parameters.
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Name
-aws_access_id
-aws_secret_key
Description
VALUE
VALUE
Specifies the AWS access key ID to use to identify the caller. Must
be used together with the –aws_secret_key option. Do not use
this option with the -aws_credential_file option.
Specifies the AWS secret access key to use to sign the request to
Amazon CloudWatch. Must be used together with the
-aws_access_id option. Do not use this option with
-aws_credential_file option.
-whatif
Performs a test run of the script that collects the metrics but does
not actually call Amazon CloudWatch to report the data. This option
also checks that credentials are provided.
-from_scheduler
Use this option when calling the script from task scheduler. When
this option is used, all diagnostic output is suppressed, but error
messages are sent to the log file.
-verbose
Displays detailed information about what the script is doing.
Get-help
Displays usage information.
mon-put-metrics-disk.ps1
-version
Displays the version number of the script.
-logfile
Logfile is used to log error message. Use this along with
–from_scheduler option. If no value is specified for logfile then a
default file is created with the same as the script with .log extension.
Examples
To collect all available disk metrics using an inline access ID and secret key and send the
data to Amazon CloudWatch
•
Run the following command:
.\mon-put-metrics-disk.ps1 -aws_access_id ThisIsMyAccessKey -aws_secret_key
ThisIsMySecretKey -disk_space_util -disk_space_avail -disk_space_units
Gigabytes
To collect all available disk metrics using a credential file and send the data to Amazon
CloudWatch
•
Run the following command:
.\mon-put-metrics-disk.ps1
-aws_credential_file C:\awscreds.conf -disk_drive C:, D:
-disk_space_util -disk_space_used -disk_space_avail -disk_space_units
Gigabytes
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To collect all available disk metrics using credentials stored in an environment variable
and send the data to Amazon CloudWatch
•
Run the following command:
.\mon-put-metrics-disk.ps1 -disk_drive C:, D:
-disk_space_util -disk_space_used -disk_space_avail disk_space_units Gigabytes
mon-put-metrics-perfmon.ps1
This script collects PerfMon counters on the current system. It then makes a remote call to Amazon
CloudWatch to report the collected data as custom metrics.
Options
Name
Description
-processor_queue
Reports current processor queue counter.
-pages_input
Reports memory pages/input memory counter.
-aws_credential_file
PATH
Provides the location of the file containing AWS credentials. This
parameter cannot be used with the –aws_access_id and
-aws_secret_key parameters.
-aws_access_id
Specifies the AWS access key ID to use to identify the caller. Must
be used together with the –aws_secret_key option. Do not use
this option with the -aws_credential_file option.
-aws_secret_key
VALUE
VALUE
Specifies the AWS secret access key to use to sign the request to
Amazon CloudWatch. Must be used together with the
-aws_access_id option. Do not use this option with
-aws_credential_file option.
-whatif
Performs a test run of the script that collects the metrics but does
not actually call Amazon CloudWatch to report the data. This option
also checks that credentials are provided.
-from_scheduler
Use this option when calling the script from task scheduler. When
this option is used, all diagnostic output is suppressed, but error
messages are sent to the log file.
-verbose
Displays detailed information about what the script is doing.
Get-help
Displays usage information.
mon-put-metrics-disk.ps1
-version
Displays the version number of the script.
-logfile
Logfile is used to log error message. Use this along with
–from_scheduler option. If no value is specified for logfile then a
default file is created with the same as the script with .log extension.
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Examples
To collect preset PerfMon counters in script using an inline access ID and secret key and
send the data to Amazon CloudWatch
•
Run the following command:
.\mon-put-metrics-perfmon.ps1 -aws_access_id ThisIsMyAccessKey -aws_secret_key
ThisIsMySecretKey -pages_input -processor_queue
To collect preset PerfMon counters in script using a credential file and send the data to
Amazon CloudWatch
•
Run the following command:
.\mon-put-metrics-perfmon.ps1
pages_input -processor_queue
-aws_credential_file C:\awscreds.conf -
To collect preset PerfMon counters in script using credentials stored in an environment
variable and send the data to Amazon CloudWatch
•
Run the following command:
.\mon-put-metrics-perfmon.ps1 -pages_input -processor_queue
To add more counters to be pushed to Amazon CloudWatch
1.
Open the script in a text editor such as Notepad, and then on line 72, locate the following commented
section:
### Add More counters here.
#$Counters.Add('\Memory\Cache Bytes','Bytes')
#$Counters.Add('\\localhost\physicaldisk(0 c:)\% disk time','Percent')
Note
The first parameter (e.g., $Counters.Add) is the PerfMon counter. The second parameter
(e.g., ('\Memory\Cache Bytes','Bytes')) is the unit of data that counter provides.
2.
Edit the script and add your own PerfMon counters to the script as shown above. After you have
added custom PerfMon counters to the script, you can run the script without any parameters other
than credential information.
Note
You can only add PerfMon counters to the script on your computer. You can use the GetCounter command to test PerfMon counters. For more information, see Get-Counter on
the Microsoft TechNet website.
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mon-get-instance-stats.ps1
This script queries Amazon CloudWatch for statistics on memory, page file, and disk space metrics
within the time interval provided using the number of most recent hours. This data is provided for the
Amazon EC2 instance on which this script is executed.
Options
Name
Description
-recent-hours N
Specifies the number of recent hours to report on, as represented
by N where N is an integer.
-aws_credential_file
PATH
Provides the location of the file containing AWS credentials. This
parameter cannot be used with the –aws_access_id and
-aws_secret_key parameters.
-aws_access_id
Specifies the AWS access key ID to use to identify the caller. Must
be used together with the –aws_secret_key option. Do not use
this option with the -aws_credential_file option.
-aws_secret_key
VALUE
VALUE
-verbose
Specifies the AWS secret access key to use to sign the request to
Amazon CloudWatch. Must be used together with the
-aws_access_id option. Do not use this option with
-aws_credential_file option.
Displays detailed information about what the script is doing.
Get-help
Displays usage information.
mon-get-instance-stats.ps1
-version
Displays the version number of the script.
Examples
To get utilization statistics for the last 12 hours using an inline access ID and secret key
and send the data to Amazon CloudWatch
•
Run the following command:
.\ mon-get-instance-stats.ps1 -aws_access_id
ThisIsMyAccessKey -aws_secret_key ThisIsMySecretKey -re
cent_hours 12
To get utilization statistics for the last 12 hours using a credential file and send the data
to Amazon CloudWatch
•
Run the following command:
.\mon-get-instance-stats.ps1 -aws_credential_file C:\awscreds.conf -re
cent_hours 12
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To get utilization statistics for the last 12 hours using credentials stored in an environment
variable and send the data to Amazon CloudWatch
•
Run the following command:
.\mon-get-instance-stats.ps1 -recent_hours 12
The returned response will be similar to the following example output:
Assembly Loaded
Instance Metrics for last 12 hours.
CPU Utilization
Average: 4.69 % Maximum: 10.47 % Minimum:
Memory Utilization
Average: 14.45 % Maximum:
14.77 % Minimum:
1.16 %
pagefileUtilization(c:\pagefile.sys)
Average: 0.00 % Maximum: 0.00 % Minimum:
14.38 %
Volume Utilization C:
Average: 17.28 % Maximum:
Volume Utilization D:
Average: 1.41 % Maximum:
17.28 % Minimum:
0.00 %
1.41 % Minimum:
pagefileUtilization(f:\pagefile.sys)
Average: 0.00 % Maximum: 0.00 % Minimum:
pagefileUtilization(f:\pagefile.sys)
Average: 0 Maximum: 0 Minimum: 0
17.28 %
1.41 %
0.00 %
pagefileUtilization(f:\pagefile.sys)
Average: 0 Maximum: 0 Minimum: 0
Set Up Task Scheduler to Send Metrics Reports to Amazon
CloudWatch
You can use Windows Task Scheduler to send metrics reports periodically to Amazon CloudWatch.
To set up task scheduler to send metrics reports to Amazon CloudWatch
1.
On your Windows Server instance, click Start, click Administrative Tools, and then click Task
Scheduler.
2.
3.
On the Action menu, click Create Task.
In the Create Task dialog box, on the General tab, in the Name box, type a name for the task, and
then select Run whether user is logged on or not.
4.
5.
On the Triggers tab, click New.
In the New Trigger dialog box, under Settings, select One time.
6.
Under Advanced settings, select Repeat task every and select 5 minutes from the drop-down
menu.
In the for a duration of drop-down menu, select Indefinitely, and then click OK.
7.
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Note
These settings create a trigger that will launch the script every 5 minutes indefinitely. To
modify this task to run for set number of days using the Expire check box.
8.
On the Actions tab, click New.
9. In the Action drop-down menu, select Start a program.
10. Under Settings, in the Program/script box, type Powershell.exe.
11. In the Add arguments (optional) box, type -command "C:\scripts\mon-put-metricsdisk.ps1 -disk_drive C:,d -disk_space_util -disk_space_units gigabytes from_scheduler -logfile C:\mylogfile.log", and then click OK.
12. On the Create Task dialog box, click OK.
If you selected a user account to run this task, Task Scheduler will prompt you for user credentials.
Enter the user name and password for the account that will run the task, and then click OK.
Note
If the PerfMon counters you are using don't require administrator privileges, you can run
this task using a system account instead of an administrator account. In the Create Task
dialog box, on the General tab, click Change User or Group, and then select a system
account.
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Network and Security
Amazon EC2 provides the following network and security features.
Features
• Amazon EC2 Key Pairs (p. 264)
• Amazon EC2 Security Groups (p. 268)
• Controlling Access to Amazon EC2 Resources (p. 276)
• Amazon EC2 and Amazon Virtual Private Cloud (VPC) (p. 313)
• Amazon EC2 Instance IP Addressing (p. 324)
• Elastic IP Addresses (EIP) (p. 333)
• Elastic Network Interfaces (ENI) (p. 338)
• Enabling Enhanced Networking on Windows Instances in a VPC (p. 350)
If you access Amazon EC2 using the command line tools or an API, you'll need your access key ID and
secret access key. For more information, see How Do I Get Security Credentials? in the Amazon Web
Services General Reference.
You can launch an instance into one of two platforms: EC2-Classic or EC2-VPC. An instance that's
launched into EC2-Classic or a default VPC is automatically assigned a public IP address. An instance
that's launched into a nondefault VPC can be assigned a public IP address on launch. For more information
about EC2-Classic and EC2-VPC, see Supported Platforms (p. 316).
Instances can fail or terminate for reasons outside of your control. If an instance fails and you launch a
replacement instance, the replacement has a different public IP address than the original. However, if
your application needs a static IP address, you can use an Elastic IP address.
You can use security groups to control who can access your instances. These are analogous to an inbound
network firewall that enables you to specify the protocols, ports, and source IP ranges that are allowed
to reach your instances.You can create multiple security groups and assign different rules to each group.
You can then assign each instance to one or more security groups, and we use the rules to determine
which traffic is allowed to reach the instance. You can configure a security group so that only specific IP
addresses or specific security groups have access to the instance.
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Key Pairs
Amazon EC2 Key Pairs
Amazon EC2 uses public–key cryptography to encrypt and decrypt login information. Public–key cryptography uses a public key to encrypt a piece of data, such as a password, then the recipient uses the
private key to decrypt the data. The public and private keys are known as a key pair.
To log in to your instance, you must create a key pair, specify the name of the key pair when you launch
the instance, and provide the private key when you connect to the instance. With Windows instances,
you use a key pair to obtain the administrator password and then log in using RDP.
Creating a Key Pair
You can use Amazon EC2 to create your key pair. For more information, see Creating Your Key Pair
Using Amazon EC2 (p. 264).
Alternatively, you could use a third-party tool and then import the public key to Amazon EC2. For more
information, see Importing Your Own Key Pair to Amazon EC2 (p. 265).
Each key pair requires a name. Be sure to choose a name that is easy to remember. Amazon EC2 associates the public key with the name that you specify as the key name.
Amazon EC2 stores the public key only, and you store the private key. Anyone who possesses your
private key can decrypt your login information, so it's important that you store your private keys in a secure
place.
The keys that Amazon EC2 uses are 1024-bit SSH-2 RSA keys. You can have up to five thousand key
pairs per region.
Launching and Connecting to Your Instance
When you launch an instance, you should specify the name of the key pair you plan to use to connect to
the instance. If you don't specify the name of an existing key pair when you launch an instance, you won't
be able to connect to the instance. When you connect to the instance, you must specify the private key
that corresponds to the key pair you specified when you launched the instance. Amazon EC2 doesn't
keep a copy of your private key; therefore, if you lose your private key, there is no way to recover it. If
you lose the private key for an instance store-backed instance, you can't access the instance; you should
terminate the instance and launch another instance using a new key pair.
Topics
• Creating Your Key Pair Using Amazon EC2 (p. 264)
• Importing Your Own Key Pair to Amazon EC2 (p. 265)
• Retrieving the Public Key for Your Key Pair (p. 267)
• Verifying Your Key Pair's Fingerprint (p. 267)
• Deleting Your Key Pair (p. 268)
Creating Your Key Pair Using Amazon EC2
You can create a key pair using the Amazon EC2 console or the command line.
To create your key pair using the console
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select a region for the key pair. You can select any region that's available
to you, regardless of your location. This choice is important because some Amazon EC2 resources
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can be shared between regions, but key pairs can't. For example, if you create a key pair in the US
West (Oregon) region, you can't see or use the key pair in another region.
3.
4.
5.
6.
Click Key Pairs in the navigation pane.
Click Create Key Pair.
Enter a name for the new key pair in the Key pair name field of the Create Key Pair dialog box, and
then click Create.
The private key file is automatically downloaded by your browser. The base file name is the name
you specified as the name of your key pair, and the file name extension is .pem. Save the private
key file in a safe place.
Important
This is the only chance for you to save the private key file. You'll need to provide the name
of your key pair when you launch an instance and the corresponding private key each time
you connect to the instance.
To create your key pair using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-key-pair (AWS CLI)
• ec2-create-keypair (Amazon EC2 CLI)
• New-EC2KeyPair (AWS Tools for Windows PowerShell)
Importing Your Own Key Pair to Amazon EC2
If you used Amazon EC2 to create your key pair, as described in the previous section, you are ready to
launch an instance. Otherwise, instead of using Amazon EC2 to create your key pair, you can create an
RSA key pair using a third-party tool and then import the public key to Amazon EC2. For example, you
can use ssh-keygen (a tool provided with the standard OpenSSH installation) to create a key pair. Alternatively, Java, Ruby, Python, and many other programming languages provide standard libraries that you
can use to create an RSA key pair.
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Importing Your Own Key Pair to Amazon EC2
Amazon EC2 accepts the following formats:
• OpenSSH public key format
• Base64 encoded DER format
• SSH public key file format as specified in RFC4716
Amazon EC2 does not accept DSA keys. Make sure your key generator is set up to create RSA keys.
Supported lengths: 1024, 2048, and 4096.
To create a key pair using a third-party tool
1.
Generate a key pair with a third-party tool of your choice.
2.
Save the public key to a local file. For example, C:\keys\my-key-pair.pub. The file name extension for this file is not important.
3.
Save the private key to a different local file that has the .pem extension. For example, C:\keys\mykey-pair.pem. Save the private key file in a safe place. You'll need to provide the name of your
key pair when you launch an instance and the corresponding private key each time you connect to
the instance.
Use the following steps to import your key pair using the Amazon EC2 console. (If you prefer, you can
use the ec2-import-keypair command or the ImportKeyPair action to import the public key.)
To import the public key
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select the region for the key pair. This choice is important because key pair
resources cannot be shared between regions. For example, if you import a key pair into the US West
(Oregon) region, you won't be able to see or use the key pair in another region.
3.
4.
Click Key Pairs in the navigation pane.
Click Import Key Pair.
5.
In the Import Key Pair dialog box, click Browse, and select the public key file that you saved previously. Enter a name for the key pair in the Key pair name field, and click Import.
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Retrieving the Public Key for Your Key Pair
After the public key file is imported, you can verify that the key pair was imported successfully using the
Amazon EC2 console as follows. (If you prefer, you can use the ec2-describe-keypairs command or the
DescribeKeyPairs action to list your key pairs.)
To verify that your key pair was imported
1.
From the navigation bar, select the region in which you created the key pair.
2.
3.
Click Key Pairs in the navigation pane.
Verify that the key pair that you imported is in the displayed list of key pairs.
Retrieving the Public Key for Your Key Pair
On Windows, you can use PuTTYgen to get the public key for your key pair. Start PuTTYgen, click Load,
and select the .ppk or .pem file. PuTTYgen displays the public key.
The public key that you specified when you launched an instance is also available to you through its instance metadata. To view the public key that you specified when launching the instance, use the following
command from your instance:
C:\> GET http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQClKsfkNkuSevGj3eYhCe53pcjqP3maAhDFcvBS7O6V
hz2ItxCih+PnDSUaw+WNQn/mZphTk/a/gU8jEzoOWbkM4yxyb/wB96xbiFveSFJuOp/d6RJhJOI0iBXr
lsLnBItntckiJ7FbtxJMXLvvwJryDUilBMTjYtwB+QhYXUMOzce5Pjz5/i8SeJtjnV3iAoG/cQk+0FzZ
qaeJAAHco+CY/5WrUBkrHmFJr6HcXkvJdWPkYQS3xqC0+FmUZofz221CBt5IMucxXPkX4rWi+z7wB3Rb
BQoQzd8v7yeb7OzlPnWOyN0qFU0XA246RA8QFYiCNYwI3f05p6KLxEXAMPLE my-key-pair
For more information, see Retrieving Instance Metadata (p. 101).
Verifying Your Key Pair's Fingerprint
On the Key Pairs page in the Amazon EC2 console, the Fingerprint column displays the fingerprints
generated from your key pairs. AWS calculates the fingerprint differently depending on whether the key
pair was generated by AWS or a third-party tool. If you created the key pair using AWS, the fingerprint
is calculated using an SHA-1 hash function. If you created the key pair with a third-party tool and uploaded
the public key to AWS, or if you generated a new public key from an existing AWS-created private key
and uploaded it to AWS, the fingerprint is calculated using an MD5 hash function.
You can use the fingerprint that's displayed on the Key Pairs page to verify that the private key you have
on your local machine matches the public key that's stored in AWS.
If you created your key pair using AWS, you can use the ec2-fingerprint-key command in the Amazon
EC2 CLI to generate a fingerprint from the private key file on your local machine. The output should match
the fingerprint that's displayed in the console. Alternatively, you can use the OpenSSL tools to generate
a fingerprint from the private key file:
C:\> openssl pkcs8 -in path_to_private_key -inform PEM -outform DER -topk8 nocrypt | openssl sha1 -c
If you created your key pair using a third-party tool and uploaded the public key to AWS, you can use the
OpenSSL tools to generate a fingerprint from the private key file on your local machine:
C:\> openssl rsa -in path_to_private_key -pubout -outform DER | openssl md5 -c
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The output should match the fingerprint that's displayed in the console.
Deleting Your Key Pair
When you delete a key pair, you are only deleting Amazon EC2's copy of the public key. Deleting a key
pair doesn't affect the private key on your computer or the public key on any instances already launched
using that key pair. You can't launch a new instance using a deleted key pair, but you can continue to
connect to any instances that you launched using a deleted key pair, as long as you still have the private
key (.pem) file.
You can delete a key pair using the Amazon EC2 console or the command line.
To delete your key pair using the console
1.
Open the Amazon EC2 console.
2.
3.
4.
Click Key Pairs in the navigation pane.
Select the key pair and click Delete.
When prompted, click Yes.
To delete your key pair using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• delete-key-pair (AWS CLI)
• ec2-delete-keypair (Amazon EC2 CLI)
• Remove-EC2KeyPair (AWS Tools for Windows PowerShell)
Amazon EC2 Security Groups
A security group acts as a virtual firewall that controls the traffic for one or more instances. When you
launch an instance, you associate one or more security groups with the instance. You add rules to each
security group that allow traffic to or from its associated instances. You can modify the rules for a security
group at any time; the new rules are automatically applied to all instances that are associated with the
security group. When we decide whether to allow traffic to reach an instance, we evaluate all the rules
from all the security groups that are associated with the instance.
Topics
• Security Groups for EC2-Classic (p. 269)
• Security Groups for EC2-VPC (p. 269)
• Security Group Rules (p. 269)
• Default Security Groups (p. 270)
• Custom Security Groups (p. 271)
• Creating a Security Group (p. 272)
• Describing Your Security Groups (p. 272)
• Adding Rules to a Security Group (p. 273)
• Deleting Rules from a Security Group (p. 274)
• Deleting a Security Group (p. 274)
• API and Command Overview (p. 274)
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Security Groups for EC2-Classic
If you have requirements that aren't met by security groups, you can maintain your own firewall on any
of your instances in addition to using security groups.
Security Groups for EC2-Classic
If you're using EC2-Classic, you must use security groups created specifically for EC2-Classic. When
you launch an instance in EC2-Classic, you must specify a security group in the same region as the instance. You can't specify a security group that you created for a VPC when you launch an instance in
EC2-Classic.
After you launch an instance in EC2-Classic, you can't change its security groups. However, you can add
rules to or remove rules from a security group, and those changes are automatically applied to all instances
that are associated with the security group.
Note
In EC2-Classic, you can associate an instance with up to 500 security groups and add up to 100
rules to a security group.
Security Groups for EC2-VPC
If you're using EC2-VPC, you must use security groups created specifically for your VPC. When you
launch an instance in a VPC, you must specify a security group for that VPC. You can't specify a security
group that you created for EC2-Classic when you launch an instance in a VPC.
After you launch an instance in a VPC, you can change its security groups. You can also change the
rules of a security group, and those changes are automatically applied to all instances that are associated
with the security group.
Note
In EC2-VPC, you can associate a network interface with up to 5 security groups and add up to
50 rules to a security group.
When you specify a security group for a nondefault VPC to the CLI or the API actions, you must use the
security group ID and not the security group name to identify the security group.
Security groups for EC2-VPC have additional capabilities that aren't supported by security groups for
EC2-Classic. For more information about security groups for EC2-VPC, see Security Groups for Your
VPC in the Amazon VPC User Guide.
Security Group Rules
The rules of a security group control the inbound traffic that's allowed to reach the instances that are associated with the security group and the outbound traffic that's allowed to leave them. By default, security
groups allow all outbound traffic.
You can add and remove rules at any time. Your changes are automatically applied to the instances associated with the security group after a short period. You can either edit an existing rule in a security
group, or delete it and add a new rule. You can copy the rules from an existing security group to a new
security group. You can't change the outbound rules for EC2-Classic. Security group rules are always
permissive; you can't create rules that deny access.
For each rule, you specify the following:
• The protocol to allow (such as TCP, UDP, or ICMP).
• TCP and UDP, or a custom protocol: The range of ports to allow
• ICMP: The ICMP type and code
• One or the following options for the source (inbound rules) or destination (outbound rules):
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• An individual IP address, in CIDR notation. Be sure to use the /32 prefix after the IP address; if you
use the /0 prefix after the IP address, this opens the port to everyone. For example, specify the IP
address 203.0.113.1 as 203.0.113.1/32.
• An IP address range, in CIDR notation (for example, 203.0.113.0/24).
• The name (EC2-Classic) or ID (EC2-Classic or EC2-VPC) of a security group. This allows instances
associated with the specified security group to access instances associated with this security group.
(Note that this does not add rules from the source security group to this security group.) You can
specify one of the following security groups:
• The current security group.
• EC2-Classic: A different security group for EC2-Classic in the same region
• EC2-VPC: A different security group for the same VPC
• EC2-Classic: A security group for another AWS account in the same region (add the AWS account
ID as a prefix; for example, 111122223333/sg-edcd9784)
When you specify a security group as the source or destination for a rule, the rule affects all instances
associated with the security group. Incoming traffic is allowed based on the private IP addresses of the
instances that are associated with the source security group (and not the public IP or Elastic IP addresses).
If there is more than one rule for a specific port, we apply the most permissive rule. For example, if you
have a rule that allows access to TCP port 3389 (RDP) from IP address 203.0.113.1 and another rule
that allows access to TCP port 3389 from everyone, everyone has access to TCP port 3389.
When you associate multiple security groups with an instance, the rules from each security group are
effectively aggregated to create one set of rules. We use this set of rules to determine whether to allow
access.
Caution
Because you can assign multiple security groups to an instance, an instance can have hundreds
of rules that apply. This might cause problems when you access the instance. Therefore, we
recommend that you condense your rules as much as possible.
For more information about IP addresses, see Amazon EC2 Instance IP Addressing (p. 324).
Default Security Groups
Your AWS account automatically has a default security group per region for EC2-Classic. When you
create a VPC, we automatically create a default security group for the VPC. If you don't specify a different
security group when you launch an instance, the instance is automatically associated with the appropriate
default security group.
A default security group is named default, and it has an ID assigned by AWS. The following are the
initial settings for each default security group:
• Allow inbound traffic only from other instances associated with the default security group
• Allow all outbound traffic from the instance
The default security group specifies itself as a source security group in its inbound rules. This is what allows
instances associated with the default security group to communicate with other instances associated with
the default security group.
You can change the rules for a default security group. For example, you can add an inbound rule to allow
RDP connections so that specific hosts can manage the instance.
You can't delete a default security group.
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Custom Security Groups
If you don't want all your instances to use the default security group, you can create your own security
groups and specify them when you launch your instances. You can create multiple security groups to
reflect the different roles that your instances play; for example, a web server or a database server. For
instructions that help you create security groups for web servers and database servers, see Recommended
Security Groups in the Amazon VPC User Guide.
Note
In EC2-Classic, you can create up to 500 security groups in each region for each account. In
EC2-VPC, you can create up to 100 security groups per VPC. The security groups for EC2Classic do not count against the security group limit for EC2-VPC.
When you create a security group, you must provide it with a name and a description. Security group
names and descriptions can be up to 255 characters in length, and are limited to the following characters:
• EC2-Classic: ASCII characters
• EC2-VPC: a-z, A-Z, 0-9, spaces, and ._-:/()#,@[]+=&;{}!$*
AWS assigns each security group a unique ID in the form sg-xxxxxxxx. The following are the initial settings
for a security group that you create:
• Allow no inbound traffic
• Allow all outbound traffic
After you've created a security group, you can change its inbound rules to reflect the type of inbound
traffic that you want to reach the associated instances. In EC2-VPC, you can also change its outbound
rules.
To allow instances that have the same security group to communicate with each other, you must explicitly
add rules for this. The following table describes the rules that you must add to your security group to enable
instances in EC2-Classic to communicate with each other.
Inbound
Source
Protocol
Port Range
Comments
The ID of the security group
ICMP
All
Allow inbound ICMP access from other
instances associated with this security
group
The ID of the security group
TCP
0 - 65535
Allow inbound TCP access from other
instances associated with this security
group
The ID of the security group
UDP
0 - 65535
Allow inbound UDP access from other
instances associated with this security
group
The following table describes the rules that you must add to your security group to enable instances in a
VPC to communicate with each other.
Inbound
Source
Protocol
Port Range
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Creating a Security Group
The ID of the security group
All
All
Allow inbound traffic from other
instances associated with this security
group
Creating a Security Group
To create a new security group
1.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Security Groups.
Click Create Security Group.
4.
Specify a name and description for the security group. For VPC, select No VPC to create a security
group for EC2-Classic, or select a VPC ID to create a security group for that VPC.
You can start adding rules, or you can click Create to create the security group now (you can always
add rules later). For more information about adding rules, see Adding Rules to a Security Group (p. 273).
5.
To copy a security group
1.
2.
3.
4.
Open the Amazon EC2 console.
In the navigation pane, click Security Groups.
Select the security group you want to copy, click Actions, and then select Copy to new.
The Create Security Group dialog opens, and is populated with the rules from the existing security
group. Specify a name and description for your new security group. In the VPC list, select No VPC
to create a security group for EC2-Classic, or select a VPC ID to create a security group for that
VPC. When you are done, click Create.
You can assign a security group to an instance when you launch the instance. When you add or remove
rules, those changes are automatically applied to all instances to which you've assigned the security
group.
After you launch an instance in EC2-Classic, you can't change its security groups. After you launch an
instance in a VPC, you can change its security groups. For more information, see Changing an Instance's
Security Groups in the Amazon VPC User Guide.
Describing Your Security Groups
To describe your security groups for EC2-Classic
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click Security Groups.
Select Network Platforms from the filter list, then select EC2-Classic.
4.
Select a security group. We display general information in the Description tab and inbound rules
on the Inbound tab.
To describe your security groups for EC2-VPC
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click Security Groups.
3.
Select Network Platforms from the filter list, then select EC2-VPC.
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Adding Rules to a Security Group
4.
Select a security group. We display general information in the Description tab, inbound rules on the
Inbound tab, and outbound rules on the Outbound tab.
Adding Rules to a Security Group
When you add a rule to a security group, the new rule is automatically applied to any instances associated
with the security group.
To add rules to a security group
1.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Security Groups.
Select the security group.
4.
You can allow web servers to receive all inbound HTTP and HTTPS traffic. On the Inbound tab,
click Edit. In the dialog, click Add Rule. Select HTTP from the Type list, and leave the source as
Anywhere (0.0.0.0/0). Add a similar rule for the HTTPS protocol.
5.
To connect to a Windows instance, you need to allow RDP traffic. Click Add Rule, and then select
RDP from the Type list.
In the Source field, specify the public IP address of your computer, in CIDR notation. For example,
if your IP address is 203.0.113.25, specify 203.0.113.25/32 to list this single IP address in
CIDR notation. If your company allocates addresses from a range, specify the entire range, such as
203.0.113.0/24. You can select My IP to from the Source list to let us automatically populate the
field with your computer's IP address. However, if you are connecting through an ISP or from behind
your firewall without a static IP address, you need to find out the range of IP addresses used by client
computers.
Caution
If you use 0.0.0.0/0, you enable all IP addresses to access your instance using RDP.
This is acceptable for a short time in a test environment, but it's unsafe for production environments. In production, you'll authorize only a specific IP address or range of addresses to
access your instance.
6.
You can allow communication between all instances associated with this security group, or between
instances associated with another security group and instances associated with this security group.
Click Add Rule, select All ICMP, then start typing the ID of the security group in Source; this provides
you with a list of security groups. Select the security group from the list. Repeat the steps for the
TCP and UDP protocols. Click Save when you are done.
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Deleting Rules from a Security Group
7.
If you are creating a security group for a VPC, you can also specify outbound rules. For an example,
see Adding and Removing Rules in the Amazon VPC User Guide.
Deleting Rules from a Security Group
When you delete a rule from a security group, the change is automatically applied to any instances associated with the security group.
To delete a security group rule
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
In the navigation pane, click Security Groups.
Select a security group.
Click Edit, and then click the Delete icon next to each rule that you need to delete.
Click Save.
Deleting a Security Group
You can't delete a security group that associated with an instance. You can't delete the default security
group.
To delete a security group
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click Security Groups.
Select a security group and click Delete.
4.
Click Yes, Delete.
API and Command Overview
You can perform the tasks described on this page using the command line or an API. For more information
about the command line interfaces and a list of available APIs, see Accessing Amazon EC2 (p. 3).
Create a security group
• create-security-group (AWS CLI)
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API and Command Overview
• ec2-create-group (Amazon EC2 CLI)
• New-EC2SecurityGroup (AWS Tools for Windows PowerShell)
Add one or more ingress rules to a security group
• authorize-security-group-ingress (AWS CLI)
• ec2-authorize (Amazon EC2 CLI)
• Grant-EC2SecurityGroupIngress (AWS Tools for Windows PowerShell)
[EC2-VPC] Add one or more egress rules to a security group
• authorize-security-group-egress (AWS CLI)
• ec2-authorize (Amazon EC2 CLI)
• Grant-EC2SecurityGroupIngress (AWS Tools for Windows PowerShell)
Describe one or more security groups
• describe-security-groups (AWS CLI)
• ec2-describe-group (Amazon EC2 CLI)
• Get-EC2SecurityGroup (AWS Tools for Windows PowerShell)
[EC2-VPC] Modify the security groups for an instance
• modify-instance-attribute (AWS CLI)
• ec2-modify-instance-attribute (Amazon EC2 CLI)
• Edit-EC2InstanceAttribute (AWS Tools for Windows PowerShell)
Remove one or more ingress rules from a security group
• revoke-security-group-ingress (AWS CLI)
• ec2-revoke (Amazon EC2 CLI)
• Revoke-EC2SecurityGroupIngress (AWS Tools for Windows PowerShell)
[EC2-VPC] Remove one or more egress rules from a security group
• revoke-security-group-egress(AWS CLI)
• ec2-revoke (Amazon EC2 CLI)
• Revoke-EC2SecurityGroupEgress (AWS Tools for Windows PowerShell)
Delete a security group
• delete-security-group (AWS CLI)
• ec2-delete-group (Amazon EC2 CLI)
• Remove-EC2SecurityGroup (AWS Tools for Windows PowerShell)
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Controlling Access
Controlling Access to Amazon EC2 Resources
Your security credentials identify you to services in AWS and grant you unlimited use of your AWS resources, such as your Amazon EC2 resources. You can use features of Amazon EC2 and AWS Identity
and Access Management (IAM) to allow other users, services, and applications to use your Amazon EC2
resources without sharing your security credentials. You can choose to allow full use or limited use of
your Amazon EC2 resources.
Topics
• Network Access to Your Instance (p. 276)
• Amazon EC2 Permission Attributes (p. 276)
• IAM and Amazon EC2 (p. 276)
• IAM Policies for Amazon EC2 (p. 278)
• IAM Roles for Amazon EC2 (p. 306)
• Authorizing Inbound Traffic for Your Instances (p. 312)
Network Access to Your Instance
A security group acts as a firewall that controls the traffic allowed to reach one or more instances. When
you launch an instance, you assign it one or more security groups. You add rules to each security group
that control traffic for the instance. You can modify the rules for a security group at any time; the new
rules are automatically applied to all instances to which the security group is assigned.
For more information, see Authorizing Inbound Traffic for Your Instances (p. 312).
Amazon EC2 Permission Attributes
Your organization might have multiple AWS accounts. Amazon EC2 enables you to specify additional
AWS accounts that can use your Amazon Machine Images (AMIs) and Amazon EBS snapshots. These
permissions work at the AWS account level only; you can't restrict permissions for specific users within
the specified AWS account. All users in the AWS account that you've specified can use the AMI or
snapshot.
Each AMI has a LaunchPermission attribute that controls which AWS accounts can access the AMI.
For more information, see Making an AMI Public (p. 55).
Each Amazon EBS snapshot has a createVolumePermission attribute that controls which AWS accounts can use the snapshot. For more information, see Sharing Snapshots (p. 390).
IAM and Amazon EC2
IAM enables you to do the following:
• Create users and groups under your AWS account
• Assign unique security credentials to each user under your AWS account
• Control each user's permissions to perform tasks using AWS resources
• Allow the users in another AWS account to share your AWS resources
• Create roles for your AWS account and define the users or services that can assume them
• Use existing identities for your enterprise to grant permissions to perform tasks using AWS resources
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By using IAM with Amazon EC2, you can control whether users in your organization can perform a task
using specific Amazon EC2 API actions and whether they can use specific AWS resources.
This topic helps you answer the following questions:
• How do I create groups and users in IAM?
• How do I create a policy?
• What IAM policies do I need to carry out tasks in Amazon EC2?
• How do I grant permissions to perform actions in Amazon EC2?
• How do I grant permissions to perform actions on specific resources in Amazon EC2?
Creating an IAM Group and Users
To create an IAM group
1.
2.
3.
4.
Sign in to the AWS Management Console and open the IAM console at https://console.aws.amazon.com/iam/.
In the navigation pane, click Groups and then click Create New Group.
In the Group Name box, type a name for your group, and then click Next Step.
In the Select Policy Template section, click Select next to a policy template of your choice. For
example, for Amazon EC2, one of the following policy templates might meet your needs:
•
•
•
•
5.
Power User Access
Read Only Access
Amazon EC2 Full Access
Amazon EC2 Read Only Access
Click Next Step and then click Create Group.
Your new group is listed under Group Name.
To create an IAM user, add the user to your group, and create a password for the user
1.
2.
3.
In the navigation pane, click Users and then click Create New Users.
In box 1, type a user name and then click Create.
Click Download Credentials and save your access key in a secure place.You will need your access
key for programmatic access to AWS using the AWS CLI, the AWS SDKs, or the HTTP APIs.
Note
4.
You cannot retrieve the secret access key after you complete this step; if you misplace it
you must create a new one.
After you have downloaded your access key, click Close.
Under User Name, click the name of the user you just created.
5.
6.
7.
Click Groups and then click Add User to Groups.
Select the group you created earlier, and then click Add to Groups.
Click Security Credentials and then under Sign-In Credentials, click Manage Password.
8.
Select Assign a custom password and then type and confirm a password. When you are finished,
click Apply.
9.
Give each user his or her credentials (access keys and password); this enables them to use services
based on the permissions you specified for the IAM group
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Related Topics
For more information about IAM, see the following:
• IAM Policies for Amazon EC2 (p. 278)
• IAM Roles for Amazon EC2 (p. 306)
• Identity and Access Management (IAM)
• Using IAM
IAM Policies for Amazon EC2
By default, IAM users don't have permission to create or modify Amazon EC2 resources, or perform tasks
using the Amazon EC2 API. (This means that they also can't do so using the Amazon EC2 console or
CLI.) To allow IAM users to create or modify resources and perform tasks, you must create IAM policies
that grant IAM users permission to use the specific resources and API actions they'll need, and then attach
those policies to the IAM users or groups that require those permissions.
When you attach a policy to a user or group of users, it allows or denies the users permission to perform
the specified tasks on the specified resources. For more general information about IAM policies, see
Permissions and Policies in the Using IAM guide.
Topics
• Policy Syntax (p. 278)
• Actions for Amazon EC2 (p. 279)
• Amazon Resource Names for Amazon EC2 (p. 279)
• Condition Keys for Amazon EC2 (p. 282)
• Checking that Users Have the Required Permissions (p. 284)
• Supported Resources and Conditions for Amazon EC2 API Actions (p. 285)
• Example Policies for Working With the AWS CLI, the Amazon EC2 CLI, or an AWS SDK (p. 291)
• Example Policies for Working in the Amazon EC2 Console (p. 298)
Policy Syntax
An IAM policy is a JSON document that consists of one of more statements. Each statement is structured
as follows:
{
"Statement":[{
"Effect":"effect",
"Action":"action",
"Resource":"arn",
"Condition":{
"condition":{
"key":"value"
}
}
}
]
}
There are various elements that make up a statement:
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• Effect: The effect can be Allow or Deny. By default, IAM users don't have permission to use resources
and API actions, so all requests are denied. An explicit allow overrides the default. An explicit deny
overrides any allows.
• Action: The action is the specific API action for which you are granting or denying permission. To learn
about specifying action, see Actions for Amazon EC2 (p. 279).
• Resource: The resource that's affected by the action. Some Amazon EC2 API actions allow you to
include specific resources in your policy that can be created or modified by the action. To specify a
resource in the statement, you need to use its Amazon Resource Name (ARN). For more information
about specifying the arn value, see Amazon Resource Names for Amazon EC2 (p. 279). For more information about which API actions support which ARNs, see Supported Resources and Conditions for
Amazon EC2 API Actions (p. 285). If the API action does not support ARNs, use the * wildcard to specify
that all resources can be affected by the action.
• Condition: Conditions are optional. They can be used to control when your policy will be in effect. For
more information about specifying conditions for Amazon EC2, see Condition Keys for Amazon
EC2 (p. 282).
For more information about example IAM policy statements for Amazon EC2, see Example Policies for
Working With the AWS CLI, the Amazon EC2 CLI, or an AWS SDK (p. 291).
Actions for Amazon EC2
In an IAM policy statement, you can specify any API action from any service that supports IAM. For
Amazon EC2, use the following prefix with the name of the API action: ec2:. For example: ec2:RunInstances and ec2:CreateImage.
To specify multiple actions in a single statement, separate them with commas as follows:
"Action": ["ec2:action1", "ec2:action2"]
You can also specify multiple actions using wildcards. For example, you can specify all actions whose
name begins with the word "Describe" as follows:
"Action": "ec2:Describe*"
To specify all Amazon EC2 API actions, use the * wildcard as follows:
"Action": "ec2:*"
For a list of Amazon EC2 actions, see Actions in the Amazon EC2 API Reference.
Amazon Resource Names for Amazon EC2
Each IAM policy statement applies to the resources that you specify using their ARNs.
Important
Currently, not all API actions support individual ARNs; we'll add support for additional API actions
and ARNs for additional Amazon EC2 resources later. For information about which ARNs you
can use with which Amazon EC2 API actions, as well as supported condition keys for each ARN,
see Supported Resources and Conditions for Amazon EC2 API Actions (p. 285).
An ARN has the following general syntax:
arn:aws:[service]:[region]:[account]:resourceType/resourcePath
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service
The service (for example, ec2).
region
The region for the resource (for example, us-east-1).
account
The AWS account ID, with no hyphens (for example, 123456789012).
resourceType
The type of resource (for example, instance).
resourcePath
A path that identifies the resource. You can use the * wildcard in your paths.
For example, you can indicate a specific instance (i-1a2b3c4d) in your statement using its ARN as follows:
"Resource": "arn:aws:ec2:us-east-1:123456789012:instance/i-1a2b3c4d"
You can also specify all instances that belong to a specific account by using the * wildcard as follows:
"Resource": "arn:aws:ec2:us-east-1:123456789012:instance/*"
To specify all resources, or if a specific API action does not support ARNs, use the * wildcard in the Resource element as follows:
"Resource": "*"
The following table describes the ARNs for each type of resource used by the Amazon EC2 API actions.
Resource Type
ARN
All Amazon EC2 resources
arn:aws:ec2:*
All Amazon EC2 resources
owned by the specified account
in the specified region
arn:aws:ec2:region:account:*
Customer gateway
arn:aws:ec2:region:account:customer-gateway/cgw-id
Where cgw-id is cgw-xxxxxxxx
DHCP options set
arn:aws:ec2:region:account:dhcp-options/dhcp-options-id
Where dhcp-options-id is dopt-xxxxxxxx
Image
arn:aws:ec2:region::image/image-id
Where image-id is the ID of the AMI, AKI, or ARI, and account isn't
used
Instance
arn:aws:ec2:region:account:instance/instance-id
Where instance-id is i-xxxxxxxx
Instance profile
arn:aws:iam::account:instance-profile/instance-profile-name
Where instance-profile-name is the name of the instance profile, and
region isn't used
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Resource Type
ARN
Internet gateway
arn:aws:ec2:region:account:internet-gateway/igw-id
Where igw-id is igw-xxxxxxxx
Key pair
arn:aws:ec2:region:account:key-pair/key-pair-name
Where key-pair-name is the key pair name (for example,
gsg-keypair)
Network ACL
arn:aws:ec2:region:account:network-acl/nacl-id
Where nacl-id is acl-xxxxxxxx
Network interface
arn:aws:ec2:region:account:network-interface/eni-id
Where eni-id is eni-xxxxxxxx
Placement group
arn:aws:ec2:region:account:placement-group/placement-group-name
Where placement-group-name is the placement group name (for
example, my-cluster)
Route table
arn:aws:ec2:region:account:route-table/route-table-id
Where route-table-id is rtb-xxxxxxxx
Security group
arn:aws:ec2:region:account:security-group/security-group-id
Where security-group-id is sg-xxxxxxxx
Snapshot
arn:aws:ec2:region::snapshot/snapshot-id
Where snapshot-id is snap-xxxxxxxx, and account isn't used
Subnet
arn:aws:ec2:region:account:subnet/subnet-id
Where subnet-id is subnet-xxxxxxxx
Volume
arn:aws:ec2:region:account:volume/volume-id
Where volume-id is vol-xxxxxxxx
VPC
arn:aws:ec2:region:account:vpc/vpc-id
Where vpc-id is vpc-xxxxxxxx
VPC peering connection
arn:aws:ec2:region:account:vpc-peering-connection/vpc-peering-connection-id
Where vpc-peering connection-id is pcx-xxxxxxxx
Many Amazon EC2 API actions involve multiple resources. For example, AttachVolume attaches an
Amazon EBS volume to an instance, so an IAM user must have permission to use the volume and the
instance.To specify multiple resources in a single statement, separate their ARNs with commas, as follows:
"Resource": ["arn1", "arn2"]
For more general information about ARNs, see Amazon Resource Names (ARN) and AWS Service
Namespaces in the Amazon Web Services General Reference. For more information about the resources
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that are created or modified by the Amazon EC2 actions, and the ARNs that you can use in your IAM
policy statements, see Granting IAM Users Required Permissions for Amazon EC2 Resources in the
Amazon EC2 API Reference.
Condition Keys for Amazon EC2
In a policy statement, you can optionally specify conditions that control when it is in effect. Each condition
contains one or more key-value pairs. Condition keys are not case sensitive. We've defined AWS-wide
condition keys, plus additional service-specific condition keys.
If you specify multiple conditions, or multiple keys in a single condition, we evaluate them using a logical
AND operation. If you specify a single condition with multiple values for one key, we evaluate the condition
using a logical OR operation. For permission to be granted, all conditions must be met.
You can also use placeholders when you specify conditions. For example, you can grant an IAM user
permission to use resources with a tag that specifies his or her IAM user name. For more information,
see Policy Variables in the Using IAM guide.
Amazon EC2 implements the AWS-wide condition keys (see Available Keys), plus the following servicespecific condition keys. (We'll add support for additional service-specific condition keys for Amazon EC2
later.)
Condition Key
Key/Value Pair
Evaluation Types
ec2:AccepterVpc
"ec2:AccepterVpc":"vpc-arn"
ARN, Null
Where vpc-arn is the VPC ARN for the peer VPC
ec2:AvailabilityZone "ec2:AvailabilityZone":"az-api-name"
String, Null
Where az-api-name is the name of the Availability Zone (for
example, us-west-2a)
To list your Availability Zones, use
ec2-describe-availability-zones
ec2:EbsOptimized
"ec2:EbsOptimized":"optimized-flag"
Boolean, Null
Where optimized-flag is true | false
ec2:ImageType
"ec2:ImageType":"image-type-api-name"
String, Null
Where image-type-api-name is ami | aki | ari
ec2:InstanceProfile "ec2:InstanceProfile":"instance-profile-arn"
Where instance-profile-arn is the instance profile ARN
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Condition Key
Key/Value Pair
Evaluation Types
ec2:InstanceType
"ec2:InstanceType":"instance-type-api-name"
String, Null
Where instance-type-api-name is the name of the instance
type ( t2.micro | t2.small | t2.medium | m3.medium |
m3.large | m3.xlarge | m3.2xlarge | m1.small |
m1.medium | m1.large | m1.xlarge | c3.large |
c3.xlarge | c3.2xlarge | c3.4xlarge | c3.8xlarge |
c1.medium | c1.xlarge | cc2.8xlarge | r3.large |
r3.xlarge | r3.2xlarge | r3.4xlarge | r3.8xlarge |
m2.xlarge | m2.2xlarge | m2.4xlarge | cr1.8xlarge |
i2.xlarge | i2.2xlarge | i2.4xlarge | i2.8xlarge |
hs1.8xlarge | hi1.4xlarge | t1.micro | g2.2xlarge |
cg1.4xlarge).
ec2:Owner
"ec2:Owner":"account-id"
String, Null
Where account-id is amazon | aws-account-id
ec2:ParentSnapshot "ec2:ParentSnapshot":"snapshot-arn"
ARN, Null
Where snapshot-arn is the snapshot ARN
ec2:ParentVolume
"ec2:ParentVolume":"volume-arn"
ARN, Null
Where volume-arn is the volume ARN
ec2:PlacementGroup "ec2:PlacementGroup":"placement-group-arn"
ARN, Null
Where placement-group-arn is the placement group ARN
ec2:PlacementGroupStrategy "ec2:PlacementGroupStrategy":"placement-group-strategy"
String, Null
Where placement-group-strategy is cluster
ec2:Public
"ec2:Public":"public-flag"
Boolean, Null
Where public-flag for an AMI is true | false
ec2:Region
"ec2:Region":"region-name"
String, Null
Where region-name is the name of the region (for example,
us-west-2). To list your regions, use ec2-describe-regions.
ec2:RequesterVpc "ec2:RequesterVpc":"vpc-arn"
ARN, Null
Where vpc-arn is the VPC ARN for the requester's VPC
ec2:ResourceTag/tag-key "ec2:ResourceTag/tag-key":"tag-value"
String, Null
Where tag-key and tag-value are the tag-key pair
ec2:RootDeviceType "ec2:RootDeviceType":"root-device-type-name"
String, Null
Where root-device-type-name is ebs | instance-store
ec2:Subnet
"ec2:Subnet":"subnet-arn"
Where subnet-arn is the subnet ARN
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Condition Key
Key/Value Pair
Evaluation Types
ec2:Tenancy
"ec2:Tenancy":"tenancy-attribute"
String, Null
Where tenancy-attribute is default | dedicated
ec2:VolumeIops
"ec2:VolumeIops":"volume-iops"
Numeric, Null
Where volume-iops is the input/output operations per second
(IOPS); the range is 100 to 4,000
ec2:VolumeSize
"ec2:VolumeSize":"volume-size"
Numeric, Null
Where volume-size is the size of the volume, in GiB
ec2:VolumeType
"ec2:VolumeType":"volume-type-name"
String, Null
Where volume-type-name is gp2 for General Purpose (SSD)
volumes, standard for Magnetic Amazon EBS volumes, or
io1 for Provisioned IOPS (SSD) volumes.
ec2:Vpc
"ec2:Vpc":"vpc-arn"
ARN, Null
Where vpc-arn is the VPC ARN
For information about which condition keys you can use with which Amazon EC2 resources, on an actionby-action basis, see Supported Resources and Conditions for Amazon EC2 API Actions (p. 285). For example policy statements for Amazon EC2, see Example Policies for Working With the AWS CLI, the
Amazon EC2 CLI, or an AWS SDK (p. 291).
Checking that Users Have the Required Permissions
After you've created an IAM policy, we recommend that you check whether it grants users the permissions
to use the particular API actions and resources they need before you put the policy into production.
First, create an IAM user for testing purposes, and then attach the IAM policy that you created to the test
user. Then, make a request as the test user.
If the action that you are testing creates or modifies a resource, you should make the request using the
DryRun parameter (or run the CLI command with the --auth-dry-run option). In this case, the call
completes the authorization check, but does not complete the operation. For example, you can check
whether the user can terminate a particular instance without actually terminating it. If the test user has
the required permissions, the request returns DryRunOperation; otherwise, it returns UnauthorizedOperation.
If the policy doesn't grant the user the permissions that you expected, or is overly permissive, you can
adjust the policy as needed and retest until you get the desired results.
Important
It can take several minutes for policy changes to propagate before they take effect. Therefore,
we recommend that you allow five minutes to pass before you test your policy updates.
If an authorization check fails, the request returns an encoded message with diagnostic information. You
can decode the message using the DecodeAuthorizationMessage action. For more information, see
DecodeAuthorizationMessage in the AWS Security Token Service API Reference, and decode-authorization-message in the AWS Command Line Interface Reference.
For additional information about resource-level permissions in Amazon EC2, see the following AWS Security Blog post: Demystifying EC2 Resource-Level Permissions.
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Supported Resources and Conditions for Amazon EC2 API
Actions
The following table describes the Amazon EC2 API actions that currently support resource-level permissions, as well as the supported resources (and their ARNs) and condition keys for each action.
Important
If an Amazon EC2 API action is not listed in this table, then it does not support resource-level
permissions. We'll add support for additional actions, ARNs, and condition keys later.
API Action
Resources
AcceptVpcPeeringConnection VPC peering connection
Condition Keys
ec2:AccepterVpc
arn:aws:ec2:rego
i n:account:vpc-peern
i g-connecto
i n/vpc-peern
i g-connecto
i n-d
i ec2:Region
ec2:ResourceTag/tag-key
ec2:RequesterVpc
AttachVolume
VPC
ec2:ResourceTag/tag-key
arn:aws:ec2:region:account:vpc/vpc-id
ec2:Region
Where vpc-id is a VPC owned by the
accepter.
ec2:Tenancy
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
Volume
ec2:AvailabilityZone
arn:aws:ec2:region:account:volume/volume-id ec2:ParentSnapshot
ec2:Region
ec2:ResourceTag/tag-key
ec2:VolumeIops
ec2:VolumeSize
ec2:VolumeType
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API Action
Resources
AuthorizeSecurityGroupEgress Security group
Condition Keys
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
AuthorizeSecurityGroupIngress Security group
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
CreateVpcPeeringConnection VPC
ec2:ResourceTag/tag-key
arn:aws:ec2:region:account:vpc/vpc-id
ec2:Region
Where vpc-id is a requester VPC.
ec2:Tenancy
VPC peering connection
ec2:AccepterVpc
arn:aws:ec2:region:account:vpc-peering-connection/* ec2:Region
ec2:RequesterVpc
DeleteCustomerGateway Customer gateway
ec2:Region
arn:aws:ec2:region:account:customer-gateway/cgw-id ec2:ResourceTag/tag-key
DeleteDhcpOptions
DHCP options set
ec2:Region
arn:aws:ec2:region:account:dhcp-options/dhcp-options-id ec2:ResourceTag/tag-key
DeleteInternetGateway
Internet gateway
ec2:Region
arn:aws:ec2:region:account:internet-gateway/igw-id ec2:ResourceTag/tag-key
DeleteNetworkAcl
Network ACL
ec2:Region
arn:aws:ec2:region:account:network-acl/nacl-id ec2:ResourceTag/tag-key
ec2:Vpc
DeleteNetworkAclEntry
Network ACL
ec2:Region
arn:aws:ec2:region:account:network-acl/nacl-id ec2:ResourceTag/tag-key
ec2:Vpc
DeleteRoute
Route table
ec2:Region
arn:aws:ec2:region:account:route-table/route-table-id ec2:ResourceTag/tag-key
ec2:Vpc
DeleteRouteTable
Route table
ec2:Region
arn:aws:ec2:region:account:route-table/route-table-id ec2:ResourceTag/tag-key
ec2:Vpc
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API Action
Resources
Condition Keys
DeleteSecurityGroup
Security group
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
DeleteVolume
Volume
ec2:AvailabilityZone
arn:aws:ec2:region:account:volume/volume-id ec2:ParentSnapshot
ec2:Region
ec2:ResourceTag/tag-key
ec2:VolumeIops
ec2:VolumeSize
ec2:VolumeType
DeleteVpcPeeringConnection VPC peering connection
ec2:AccepterVpc
arn:aws:ec2:rego
i n:account:vpc-peern
i g-connecto
i n/vpc-peern
i g-connecto
i n-d
i ec2:Region
ec2:ResourceTag/tag-key
ec2:RequesterVpc
DetachVolume
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
Volume
ec2:AvailabilityZone
arn:aws:ec2:region:account:volume/volume-id ec2:ParentSnapshot
ec2:Region
ec2:ResourceTag/tag-key
ec2:VolumeIops
ec2:VolumeSize
ec2:VolumeType
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API Action
Resources
Condition Keys
RebootInstances
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
RejectVpcPeeringConnection VPC peering connection
ec2:AccepterVpc
arn:aws:ec2:rego
i n:account:vpc-peern
i g-connecto
i n/vpc-peern
i g-connecto
i n-d
i ec2:Region
ec2:ResourceTag/tag-key
ec2:RequesterVpc
RevokeSecurityGroupEgress Security group
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
RevokeSecurityGroupIngress Security group
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
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API Action
Resources
Condition Keys
RunInstances
Image
ec2:ImageType
arn:aws:ec2:region::image/image-id
ec2:Owner
ec2:Public
ec2:Region
ec2:RootDeviceType
ec2:ResourceTag/tag-key
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:RootDeviceType
ec2:Tenancy
Key pair
ec2:Region
arn:aws:ec2:region:account:key-pair/key-pair-name
Network interface
ec2:AvailabilityZone
arn:aws:ec2:region:account:network-interface/* ec2:Region
arn:aws:ec2:region:account:network-interface/eni-id ec2:Subnet
ec2:ResourceTag/tag-key
ec2:Vpc
Placement group
ec2:Region
arn:aws:ec2:region:account:placement-group/placement-group-name ec2:PlacementGroupStrategy
Security group
ec2:Region
arn:aws:ec2:region:account:security-group/security-group-id ec2:ResourceTag/tag-key
ec2:Vpc
Snapshot
arn:aws:ec2:region::snapshot/snapshot-id
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API Action
Resources
Condition Keys
ec2:Owner
ec2:ParentVolume
ec2:Region
ec2:SnapshotTime
ec2:ResourceTag/tag-key
ec2:VolumeSize
Subnet
ec2:AvailabilityZone
arn:aws:ec2:region:account:subnet/subnet-id ec2:Region
ec2:ResourceTag/tag-key
ec2:Vpc
Volume
ec2:AvailabilityZone
arn:aws:ec2:region:account:volume/volume-id ec2:ParentSnapshot
ec2:Region
ec2:VolumeIops
ec2:VolumeSize
ec2:VolumeType
StartInstances
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
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API Action
Resources
Condition Keys
StopInstances
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
TerminateInstances
Instance
ec2:AvailabilityZone
arn:aws:ec2:region:account:instance/instance-id ec2:EbsOptimized
ec2:InstanceProfile
ec2:InstanceType
ec2:PlacementGroup
ec2:Region
ec2:ResourceTag/tag-key
ec2:RootDeviceType
ec2:Tenancy
Example Policies for Working With the AWS CLI, the Amazon
EC2 CLI, or an AWS SDK
The following examples show policy statements that you could use to control the permissions that IAM
users have to Amazon EC2. These policies are designed for requests that are made with the AWS CLI,
the Amazon EC2 CLI, or an AWS SDK. For example policies for working in the Amazon EC2 console,
see Example Policies for Working in the Amazon EC2 Console (p. 298). For examples of IAM policies
specific to Amazon VPC, see Controlling Access to Amazon VPC Resources
• 1: Allow users to list the Amazon EC2 resources that belong to the AWS account (p. 291)
• 2: Allow users to describe, launch, stop, start, and terminate all instances (p. 292)
• 3: Allow users to describe all instances, and stop, start, and terminate only particular instances (p. 292)
• 4. Allow users to manage particular volumes for particular instances (p. 293)
• 5: Allow users to launch instances with a specific configuration (p. 294)
Example 1: Allow users to list the Amazon EC2 resources that belong to the AWS account
The following policy grants users permission to use all Amazon EC2 API actions whose names begin
with Describe. The Resource element uses a wildcard to indicate that users can specify all resources
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with these API actions. The * wildcard is also necessary in cases where the API action does not support
resource-level permissions. For more information about which ARNs you can use with which Amazon
EC2 API actions, see Supported Resources and Conditions for Amazon EC2 API Actions (p. 285).
Users don't have permission to perform any actions on the resources (unless another statement grants
them permission to do so) because they're denied permission to use API actions by default.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "ec2:Describe*",
"Resource": "*"
}
]
}
Example 2: Allow users to describe, launch, stop, start, and terminate all instances
The following policy grants users permission to use the API actions specified in the Action element. The
Resource element uses a * wildcard to indicate that users can specify all resources with these API actions.
The * wildcard is also necessary in cases where the API action does not support resource-level permissions.
For more information about which ARNs you can use with which Amazon EC2 API actions, see Supported
Resources and Conditions for Amazon EC2 API Actions (p. 285).
The users don't have permission to use any other API actions (unless another statement grants them
permission to do so) because users are denied permission to use API actions by default.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeInstances", "ec2:DescribeImages",
"ec2:DescribeKeyPairs", "ec2:DescribeSecurityGroups",
"ec2:DescribeAvailabilityZones",
"ec2:RunInstances", "ec2:TerminateInstances",
"ec2:StopInstances", "ec2:StartInstances"
],
"Resource": "*"
}
]
}
Example 3: Allow users to describe all instances, and stop, start, and terminate only
particular instances
The following policy allows users to describe all instances, to start and stop only instances i-123abc12
and i-4c3b2a1, and to terminate only instances in the US East (N. Virginia) region (us-east-1) with the
resource tag "purpose=test".
The first statement uses a * wildcard for the Resource element to indicate that users can specify all resources with the action; in this case, they can list all instances. The * wildcard is also necessary in cases
where the API action does not support resource-level permissions (in this case, ec2:DescribeInstances). For more information about which ARNs you can use with which Amazon EC2 API actions,
see Supported Resources and Conditions for Amazon EC2 API Actions (p. 285).
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The second statement uses resource-level permissions for the StopInstances and StartInstances
actions. The specific instances are indicated by their ARNs in the Resource element.
The third statement allows users to terminate all instances in the US East (N. Virginia) region (us-east1) that belong to the specified AWS account, but only where the instance has the tag "purpose=test".
The Condition element qualifies when the policy statement is in effect.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "ec2:DescribeInstances",
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"ec2:StopInstances",
"ec2:StartInstances"
],
"Resource": [
"arn:aws:ec2:us-east-1:123456789012:instance/i-123abc12",
"arn:aws:ec2:us-east-1:123456789012:instance/i-4c3b2a1"
]
},
{
"Effect": "Allow",
"Action": "ec2:TerminateInstances",
"Resource": "arn:aws:ec2:us-east-1:123456789012:instance/*",
"Condition": {
"StringEquals": {
"ec2:ResourceTag/purpose": "test"
}
}
}
]
}
Example 4. Allow users to manage particular volumes for particular instances
When an API action requires a caller to specify multiple resources, you must create a policy statement
that allows users to access all required resources. If you need to use a Condition element with one or
more of these resources, you must create multiple statements as shown in this example.
The following policy allows users to attach volumes with the tag "volume_user=iam-user-name" to instances with the tag "department=dev", and to detach those volumes from those instances. If you attach
this policy to an IAM group, the aws:username policy variable gives each IAM user in the group permission
to attach or detach volumes from the instances with a tag named volume_user that has his or her IAM
user name as a value.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
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"ec2:AttachVolume",
"ec2:DetachVolume"
],
"Resource": "arn:aws:ec2:us-east-1:123456789012:instance/*",
"Condition": {
"StringEquals": {
"ec2:ResourceTag/department": "dev"
}
}
},
{
"Effect": "Allow",
"Action": [
"ec2:AttachVolume",
"ec2:DetachVolume"
],
"Resource": "arn:aws:ec2:us-east-1:123456789012:volume/*",
"Condition": {
"StringEquals": {
"ec2:ResourceTag/volume_user": "${aws:username}"
}
}
}
]
}
Example 5: Allow users to launch instances with a specific configuration
The RunInstances API action launches one or more instances. RunInstances requires an AMI and
creates an instance; and users can specify a key pair and security group in the request. Launching into
EC2-VPC requires a subnet, and creates a network interface. Launching from an Amazon EBS-backed
AMI creates a volume. Therefore, the user must have permission to use these Amazon EC2 resources.
The caller can also configure the instance using optional parameters to RunInstances, such as the instance type and a subnet. You can create a policy statement that requires users to specify an optional
parameter, or restricts users to particular values for a parameter. The examples in this section demonstrate
some of the many possible ways that you can control the configuration of an instance that a user can
launch.
Note that by default, users don't have permission to describe, start, stop, or terminate the resulting instances. One way to grant the users permission to manage the resulting instances is to create a specific
tag for each instance, and then create a statement that enables them to manage instances with that tag.
For more information, see Example 3: Allow users to stop and start only particular instances (p. 292).
a. AMI
The following policy allows users to launch instances using only the AMIs that have the specified tag,
"department=dev", associated with them. The users can't launch instances using other AMIs because
the Condition element of the first statement requires that users specify an AMI that has this tag. The
users also can't launch into a subnet, as the policy does not grant permissions for the subnet and network
interface resources. They can, however, launch into EC2-Classic. The second statement uses a wildcard
to enable users to create instance resources, and requires users to specify the key pair project_keypair
and the security group sg-1a2b3c4d. Users are still able to launch instances without a key pair.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
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"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region::image/ami-*"
],
"Condition": {
"StringEquals": {
"ec2:ResourceTag/department": "dev"
}
}
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region:account:instance/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:key-pair/project_keypair",
"arn:aws:ec2:region:account:security-group/sg-1a2b3c4d"
]
}
]
}
Alternatively, the following policy allows users to launch instances using only the specified AMIs, ami9e1670f7 and ami-45cf5c3c. The users can't launch an instance using other AMIs (unless another
statement grants the users permission to do so), and the users can't launch an instance into a subnet.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region::image/ami-9e1670f7",
"arn:aws:ec2:region::image/ami-45cf5c3c",
"arn:aws:ec2:region:account:instance/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:key-pair/*",
"arn:aws:ec2:region:account:security-group/*"
]
}
]
}
Alternatively, the following policy allows users to launch instances from all AMIs owned by Amazon. The
Condition element of the first statement tests whether ec2:Owner is amazon. The users can't launch
an instance using other AMIs (unless another statement grants the users permission to do so). The users
are able to launch an instance into a subnet.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region::image/ami-*"
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],
"Condition": {
"StringEquals": {
"ec2:Owner": "amazon"
}
}
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region:account:instance/*",
"arn:aws:ec2:region:account:subnet/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:network-interface/*",
"arn:aws:ec2:region:account:key-pair/*",
"arn:aws:ec2:region:account:security-group/*"
]
}
]
}
b. Instance type
The following policy allows users to launch instances using only the t1.micro or m1.small instance
type, which you might do to control costs. The users can't launch larger instances because the Condition
element of the first statement tests whether ec2:InstanceType is either t1.micro or m1.small.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region:account:instance/*"
],
"Condition": {
"StringEquals": {
"ec2:InstanceType": ["t1.micro", "m1.small"]
}
}
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region::image/ami-*",
"arn:aws:ec2:region:account:subnet/*",
"arn:aws:ec2:region:account:network-interface/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:key-pair/*",
"arn:aws:ec2:region:account:security-group/*"
]
}
]
}
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c. Subnet
The following policy allows users to launch instances using only the specified subnet, subnet-12345678.
The group can't launch instances into any another subnet (unless another statement grants the users
permission to do so). Users are still able to launch instances into EC2-Classic.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region:account:subnet/subnet-12345678",
"arn:aws:ec2:region:account:network-interface/*",
"arn:aws:ec2:region:account:instance/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region::image/ami-*",
"arn:aws:ec2:region:account:key-pair/*",
"arn:aws:ec2:region:account:security-group/*"
]
}
]
}
Alternatively, you could create a policy that denies users permission to launch an instance into any other
subnet. The statement does this by denying permission to create a network interface, except where
subnet subnet-12345678 is specified. This denial overrides any other policies that are created to allow
launching instances into other subnets. Users are still able to launch instances into EC2-Classic.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Deny",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region:account:network-interface/*"
],
"Condition": {
"ArnNotEquals": {
"ec2:Subnet": "arn:aws:ec2:region:account:subnet/subnet-12345678"
}
}
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:region::image/ami-*",
"arn:aws:ec2:region:account:network-interface/*",
"arn:aws:ec2:region:account:instance/*",
"arn:aws:ec2:region:account:subnet/*",
"arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:key-pair/*",
"arn:aws:ec2:region:account:security-group/*"
]
}
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]
}
Example Policies for Working in the Amazon EC2 Console
You can use IAM policies to grant users permissions to view and work with specific resources in the
Amazon EC2 console. You can use the example policies in the previous section; however, they are designed for requests that are made with the AWS CLI, the Amazon EC2 CLI, or an AWS SDK. The console
uses additional API actions for its features, so these policies may not work as expected. For example, a
user that has permission to use only the DescribeVolumes API action will encounter errors when trying
to view volumes in the console. This section demonstrates policies that enable users to work with specific
parts of the console.
• 1: Read-only access (p. 299)
• 2: Using the EC2 launch wizard (p. 300)
• 3: Working with volumes (p. 303)
• 4: Working with security groups (p. 304)
• 5: Working with Elastic IP addresses (p. 306)
Note
To help you work out which API actions are required to perform tasks in the console, you can
use a service such as AWS CloudTrail. For more information, see the AWS CloudTrail User
Guide. If your policy does not grant permission to create or modify a specific resource, the console
displays an encoded message with diagnostic information. You can decode the message using
the DecodeAuthorizationMessage API action for AWS STS, or the decode-authorization-message
command in the AWS CLI.
For additional information about creating policies for the Amazon EC2 console, see the following AWS
Security Blog post: Granting Users Permission to Work in the Amazon EC2 Console.
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Example 1: Read-only access
To allow users to view all resources in the Amazon EC2 console, you can use the same policy as the
following example: 1: Allow users to list the Amazon EC2 resources that belong to the AWS account (p. 291).
Users cannot perform any actions on those resources or create new resources, unless another statement
grants them permission to do so.
Alternatively, you can provide read-only access to a subset of resources. To do this, replace the * wildcard
in the ec2:Describe API action with specific ec2:Describe actions for each resource. The following
policy allows users to view all instances, AMIs, and snapshots in the Amazon EC2 console. The
ec2:DescribeTags action allows users to view public AMIs; you can remove this action if you want
users to view only private AMIs.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeInstances", "ec2:DescribeImages",
"ec2:DescribeTags", "ec2:DescribeSnapshots"
],
"Resource": "*"
}
]
}
Note
Currently, the Amazon EC2 ec2:Describe* API actions do not support resource-level permissions, so you cannot control which individual resources users can view in the console. Therefore,
the * wildcard is necessary in the Resource element of the above statement. For more information about which ARNs you can use with which Amazon EC2 API actions, see Supported Resources and Conditions for Amazon EC2 API Actions (p. 285).
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Example 2: Using the EC2 launch wizard
The Amazon EC2 launch wizard is a series of screens with options to configure and launch an instance.
Your policy must include permission to use the API actions that allow users to work with the wizard's options. If your policy does not include permission to use those actions, some items in the wizard cannot
load properly, and users cannot complete a launch.
To complete a launch successfully, users must be given permission to use the ec2:RunInstances API
action, and at least the following API actions:
• ec2:DescribeImages: To view and select an AMI.
• ec2:DescribeVPCs: To view the available network options, which are EC2-Classic and a list of VPCs.
This is required even if you are not launching into a VPC.
• ec2:DescribeSubnets: If launching into a VPC, to view all available subnets for the chosen VPC.
• ec2:DescribeSecurityGroups: To view the security groups page in the wizard. Users can select
an existing security group.
• ec2:DescribeKeyPairs or ec2:CreateKeyPair: To select an existing key pair, or create a new
one.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeInstances", "ec2:DescribeImages",
"ec2:DescribeKeyPairs","ec2:DescribeVpcs", "ec2:DescribeSubnets",
"ec2:DescribeSecurityGroups"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": "*"
}
]
}
You can add API actions to your policy to provide more options for users, for example:
• ec2:DescribeAvailabilityZones: If launching into EC2-Classic, to view and select a specific
Availability Zone.
• ec2:DescribeNetworkInterfaces: If launching into a VPC, to view and select existing network
interfaces for the selected subnet.
• ec2:CreateSecurityGroup: To create a new security group; for example, to create the wizard's
suggested launch-wizard-x security group. However, this action alone only creates the security
group; it does not add or modify any rules. To add inbound rules, users must be granted permission
to use the ec2:AuthorizeSecurityGroupIngress API action. To add outbound rules to VPC security groups, users must be granted permission to use the ec2:AuthorizeSecurityGroupEgress
API action. To modify or delete existing rules, users must be granted permission to use the relevant
ec2:RevokeSecurityGroup* API action.
• ec2:CreateTags: To add a tag to the instance. By default, the launch wizard attempts to add a tag
with a key of Name to an instance. Users that do not have permission to use this action will encounter
a warning that this tag could not be applied to an instance; however, this does not affect the success
of the launch, so you should only grant users permission to use this action if it's absolutely necessary.
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Important
Be careful about granting users permission to use the ec2:CreateTags action. This limits
your ability to use the ec2:ResourceTag condition key to restrict the use of other resources;
users can change a resource's tag in order to bypass those restrictions.
Currently, the Amazon EC2 Describe* API actions do not support resource-level permissions, so you
cannot restrict which individual resources users can view in the launch wizard. However, you can apply
resource-level permissions on the ec2:RunInstances API action to restrict which resources users can
use to launch an instance. The launch fails if users select options that they are not authorized to use.
The following policy allows users to launch m1.small instances using AMIs owned by Amazon, and only
into a specific subnet (subnet-1a2b3c4d). Users can only launch in the sa-east-1 region. If users select
a different region, or select a different instance type, AMI, or subnet in the launch wizard, the launch fails.
The first statement grants users permission to view the options in the launch wizard, as demonstrated in
the example above. The second statement grants users permission to use the network interface, volume,
key pair, security group, and subnet resources for the ec2:RunInstances action, which are required
to launch an instance into a VPC. For more information about using the ec2:RunInstances action, see
5: Allow users to launch instances with a specific configuration (p. 294). The third and fourth statements
grant users permission to use the instance and AMI resources respectively, but only if the instance is an
m1.small instance, and only if the AMI is owned by Amazon.
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{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeInstances", "ec2:DescribeImages",
"ec2:DescribeKeyPairs","ec2:DescribeVpcs", "ec2:DescribeSubnets",
"ec2:DescribeSecurityGroups"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action":"ec2:RunInstances",
"Resource": [
"arn:aws:ec2:sa-east-1:111122223333:network-interface/*",
"arn:aws:ec2:sa-east-1:111122223333:volume/*",
"arn:aws:ec2:sa-east-1:111122223333:key-pair/*",
"arn:aws:ec2:sa-east-1:111122223333:security-group/*",
"arn:aws:ec2:sa-east-1:111122223333:subnet/subnet-1a2b3c4d"
]
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:sa-east-1:111122223333:instance/*"
],
"Condition": {
"StringEquals": {
"ec2:InstanceType": "m1.small"
}
}
},
{
"Effect": "Allow",
"Action": "ec2:RunInstances",
"Resource": [
"arn:aws:ec2:sa-east-1::image/ami-*"
],
"Condition": {
"StringEquals": {
"ec2:Owner": "amazon"
}
}
}
]
}
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Example 3: Working with volumes
The following policy grants users permission to view and create volumes, and attach and detach volumes
to specific instances.
Users can attach any volume to instances that have the tag "purpose=test", and also detach volumes
from those instances. To attach a volume using the Amazon EC2 console, it is helpful for users to have
permission to use the ec2:DescribeInstances action, as this allows them to select an instance from
a pre-populated list in the Attach Volume dialog box. However, this also allows users to view all instances
on the Instances page in the console, so you can omit this action.
In the first statement, the ec2:DescribeVolumeStatus and ec2:DescribeAvailabilityZones
actions are necessary to ensure that volumes display correctly in the console.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeVolumes", "ec2:DescribeVolumeStatus",
"ec2:DescribeAvailabilityZones", "ec2:CreateVolume",
"ec2:DescribeInstances"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"ec2:AttachVolume",
"ec2:DetachVolume"
],
"Resource": "arn:aws:ec2:region:111122223333:instance/*",
"Condition": {
"StringEquals": {
"ec2:ResourceTag/purpose": "test"
}
}
},
{
"Effect": "Allow",
"Action": [
"ec2:AttachVolume",
"ec2:DetachVolume"
],
"Resource": "arn:aws:ec2:region:111122223333:volume/*"
}
]
}
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Example 4: Working with security groups
The following policy grants users permission to view security groups in the Amazon EC2 console, and to
add and remove inbound and outbound rules for existing security groups that have the tag Department=Test.
Note
You can't modify outbound rules for EC2-Classic security groups. For more information about
security groups, see Amazon EC2 Security Groups (p. 268).
In the first statement, the ec2:DescribeTags action allows users to view tags in the console, which
makes it easier for users to identify the security groups that they are allowed to modify.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeSecurityGroups", "ec2:DescribeTags"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"ec2:AuthorizeSecurityGroupIngress", "ec2:RevokeSecurityGroupIngress",
"ec2:AuthorizeSecurityGroupEgress", "ec2:RevokeSecurityGroupEgress"
],
"Resource": [
"arn:aws:ec2:region:111122223333:security-group/*"
],
"Condition": {
"StringEquals": {
"ec2:ResourceTag/Department": "Test"
}
}
}
]
}
You can create a policy that allows users to work with the Create Security Group dialog box in the
Amazon EC2 console. To use this dialog box, users must be granted permission to use at the least the
following API actions:
• ec2:CreateSecurityGroup: To create a new security group.
• ec2:DescribeVpcs: To view a list of existing VPCs in the VPC list. This action is required even if you
are not creating a security group for a VPC.
With these permissions, users can create a new security group successfully, but they cannot add any
rules to it. To work with rules in the Create Security Group dialog box, you can add the following API
actions to your policy:
• ec2:AuthorizeSecurityGroupIngress: To add inbound rules.
• ec2:AuthorizeSecurityGroupEgress: To add outbound rules to VPC security groups.
• ec2:RevokeSecurityGroupIngress: To modify or delete existing inbound rules. This is useful if
you want to allow users to use the Copy to new feature in the console. This feature opens the Create
Security Group dialog box and populates it with the same rules as the security group that was selected.
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• ec2:RevokeSecurityGroupEgress: To modify or delete outbound rules for VPC security groups.
This is useful to allow users to modify or delete the default outbound rule that allows all outbound traffic.
• ec2:DeleteSecurityGroup: To cater for scenarios where invalid rules cannot be saved. If a user
creates a security group with an invalid rule, the console first creates the security group, then attempts
to add the rules to it. After that fails, the security group is deleted. The user remains in the Create Security Group dialog box, where an error is displayed. The rules remain listed, so the user can correct
the invalid rule and try to create the security group again. This API action is not required, but if a user
is not granted permission to use it and attempts to create a security group with invalid rules, the security
group is created without any rules, and the user must add them afterward.
Currently, the ec2:CreateSecurityGroup API action does not support resource-level permissions;
however, you can apply resource-level permissions to the ec2:AuthorizeSecurityGroupIngress
and ec2:AuthorizeSecurityGroupEgress actions to control how users can create rules.
The following policy grants users permission to use the Create Security Group dialog box, and to create
inbound and outbound rules for security groups that are associated with a specific VPC (vpc-1a2b3c4d).
Users can create security groups for EC2-Classic or another VPC, but they cannot add any rules to them.
Similarly, users cannot add any rules to any existing security group that's not associated with VPC vpc1a2b3c4d. Users are also granted permission to view all security groups in the console. This makes it
easier for users to identify the security groups to which they can add inbound rules.
This policy also grants users permission to delete security groups that are associated with VPC vpc1a2b3c4d.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeSecurityGroups", "ec2:CreateSecurityGroup", "ec2:De
scribeVpcs"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": [
"ec2:DeleteSecurityGroup", "ec2:AuthorizeSecurityGroupIngress",
"ec2:AuthorizeSecurityGroupEgress"
],
"Resource": "arn:aws:ec2:region:111122223333:security-group/*",
"Condition":{
"ArnEquals": {
"ec2:Vpc": "arn:aws:ec2:region:111122223333:vpc/vpc-1a2b3c4d"
}
}
}
]
}
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Example 5: Working with Elastic IP addresses
The following policy grants users permission to view Elastic IP addresses in the Amazon EC2 console.
The console uses the ec2:DescribeInstances action to display information about instances with
which the Elastic IP addresses are associated. If users are not granted permission to use this action, the
Elastic IP addresses page cannot load properly.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": [
"ec2:DescribeAddresses", "ec2:DescribeInstances"
],
"Resource": "*"
}
]
}
To allow users to work with Elastic IP addresses, you can add the following actions to your policy
• ec2:AllocateAddress: To allocate an address for use in VPC or EC2-Classic.
• ec2:ReleaseAddress: To release an Elastic IP address.
• ec2:DescribeNetworkInterfaces: To work with the Associate Address dialog box. The dialog
box displays the available network interfaces to which you can associate an Elastic IP address, and
will not open if users are not granted permission to use this action. However, this only applies to EC2VPC; this action is not required for associating an Elastic IP address to an instance in EC2-Classic.
• ec2:AssociateAddress: To associate an Elastic IP address with an instance or a network interface.
• ec2:DisassociateAddress: To disassociate an Elastic IP address from an instance or a network
interface,
IAM Roles for Amazon EC2
Applications must sign their API requests with AWS credentials. Therefore, if you are an application developer, you need a strategy for managing credentials for your applications that run on EC2 instances.
For example, you can securely distribute your AWS credentials to the instances, enabling the applications
on those instances to use your credentials to sign requests, while protecting them from other users.
However, it's challenging to securely distribute credentials to each instance, especially those that AWS
creates on your behalf, such as Spot Instances or instances in Auto Scaling groups. You must also be
able to update the credentials on each instance when you rotate your AWS credentials.
We designed IAM roles so that your applications can securely make API requests from your instances,
without requiring you to manage the security credentials that the applications use. Instead of creating
and distributing your AWS credentials, you can delegate permission to make API requests using IAM
roles as follows:
1. Create an IAM role.
2. Define which accounts or AWS services can assume the role.
3. Define which API actions and resources the application can use after assuming the role.
4. Specify the role when you launch your instances.
5. Have the application retrieve a set of temporary credentials and use them.
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For example, you can use IAM roles to grant permissions to applications running on your instances that
needs to use a bucket in Amazon S3.
Note
Amazon EC2 uses an instance profile as a container for an IAM role. When you create an IAM
role using the console, the console creates an instance profile automatically and gives it the
same name as the role it corresponds to. If you use the AWS CLI, API, or an AWS SDK to create
a role, you create the role and instance profile as separate actions, and you might give them
different names. To launch an instance with an IAM role, you specify the name of its instance
profile. When you launch an instance using the Amazon EC2 console, you can select a role to
associate with the instance; however, the list that's displayed is actually a list of instance profile
names. For more information, see Instance Profiles in the Using IAM.
You can specify permissions for IAM roles by creating a policy in JSON format. These are similar to the
policies that you create for IAM users. If you make a change to a role, the change is propagated to all
instances, simplifying credential management.
Note
You can't assign a role to an existing instance; you can only specify a role when you launch a
new instance.
For more information about creating and using IAM roles, see Roles in the Using IAM guide.
Topics
• Retrieving Security Credentials from Instance Metadata (p. 307)
• Granting an IAM User Permission to Launch an Instance with an IAM Role (p. 308)
• Launching an Instance with an IAM Role Using the Console (p. 308)
• Launching an Instance with an IAM Role Using the AWS CLI (p. 309)
• Launching an Instance with an IAM Role Using an AWS SDK (p. 311)
Retrieving Security Credentials from Instance Metadata
An application on the instance retrieves the security credentials provided by the role from the instance
metadata item iam/security-credentials/role-name. The application is granted the permissions
for the actions and resources that you've defined for the role through the security credentials associated
with the role. These security credentials are temporary and we rotate them automatically. We make new
credentials available at least five minutes prior to the expiration of the old credentials.
Warning
If you use services that use instance metadata with IAM roles, ensure that you don't expose
your credentials when the services make HTTP calls on your behalf. The types of services that
could expose your credentials include HTTP proxies, HTML/CSS validator services, and XML
processors that support XML inclusion.
The following command retrieves the security credentials for an IAM role named s3access.
C:\> curl http://169.254.169.254/latest/meta-data/iam/security-credentials/s3ac
cess
The following is example output.
{
"Code" : "Success",
"LastUpdated" : "2012-04-26T16:39:16Z",
"Type" : "AWS-HMAC",
"AccessKeyId" : "AKIAIOSFODNN7EXAMPLE",
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"SecretAccessKey" : "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY",
"Token" : "token",
"Expiration" : "2012-04-27T22:39:16Z"
}
For more information about instance metadata, see Instance Metadata and User Data (p. 101). For more
information about temporary credentials, see the Using Temporary Security Credentials.
Granting an IAM User Permission to Launch an Instance
with an IAM Role
To enable an IAM user to launch an instance with an IAM role, you must grant the user permission to
pass the role to the instance.
For example, the following IAM policy grants users permission to launch an instance with the IAM role
named s3access.
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": "iam:PassRole",
"Resource": "arn:aws:iam::123456789012:role/s3access"
}]
}
Alternatively, you could grant IAM users access to all your roles by specifying the resource as "*" in this
policy. However, consider whether users who launch instances with your roles (ones that exist or that
you'll create later on) might be granted permissions that they don't need or shouldn't have.
For more information, see Permissions Required for Using Roles with Amazon EC2 in the Using IAM
guide.
Launching an Instance with an IAM Role Using the Console
You must create an IAM role before you can launch an instance with that role.
Important
After you create an IAM role, it may take several seconds for the permissions to propagate. If
your first attempt to launch an instance with a role fails, wait a few seconds before trying again.
For more information, see Troubleshooting Working with Roles in the Using IAM guide.
To create an IAM role using the IAM console
1.
Open the IAM console.
2.
3.
4.
In the navigation pane, click Roles, and then click Create New Role.
On the Set Role Name page, enter a name for the role and click Next Step.
On the Select Role Type page, click Select next to Amazon EC2.
5.
On the Set Permissions page, specify the policies for the group. You can select a policy template
or create custom policies. For example, for Amazon EC2, one of the following policy templates might
meet your needs:
• Power User Access
• Read Only Access
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• Amazon EC2 Full Access
• Amazon EC2 Read Only Access
For more information about creating custom policies, see IAM Policies for Amazon EC2 (p. 278).
6.
7.
On the second Set Permissions page, you can replace the automatically generated policy name
with a name of your choice. Check the details in the policy document, and click Next Step.
Review the role information, edit the role as needed, and then click Create Role.
To launch an instance with an IAM role
1.
2.
Open the Amazon EC2 console.
On the dashboard, click Launch Instance.
3.
4.
Select an AMI, then select an instance type and click Next: Configure Instance Details.
On the Configure Instance Details page, select the IAM role you created from the IAM role list.
Note
The IAM role list displays the name of the instance profile that you created when you created
your IAM role. If you created your IAM role using the console, the instance profile was created
for you and given the same name as the role. If you created your IAM role using the AWS
CLI, API, or an AWS SDK, you may have named your instance profile differently.
5.
6.
7.
Configure any other details, then follow the instructions through the rest of the wizard, or click Review
and Launch to accept default settings and go directly to the Review Instance Launch page.
Review your settings, then click Launch to choose a key pair and launch your instance.
If you are using the Amazon EC2 API actions in your application, retrieve the AWS security credentials
made available on the instance and use them to sign the requests. Note that the AWS SDK does
this for you.
C:\> curl http://169.254.169.254/latest/meta-data/iam/security-creden
tials/role_name
Launching an Instance with an IAM Role Using the AWS CLI
You must create an IAM role before you can launch an instance with that role.
Important
After you create an IAM role, it may take several seconds for the permissions to propagate. If
your first attempt to launch an instance with a role fails, wait a few seconds before trying again.
For more information, see Troubleshooting Working with Roles in the Using IAM guide.
To create an IAM role using the AWS CLI
•
Create an IAM role with a policy that allows the role to use an Amazon S3 bucket.
a.
Create the following trust policy and save it in a text file named ec2-role-trust-policy.json.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": { "Service": "ec2.amazonaws.com"},
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"Action": "sts:AssumeRole"
}
]
}
b.
Create the s3access role. You'll specify the trust policy you created.
C:\> aws iam create-role --role-name s3access --assume-role-policy-docu
ment file://ec2-role-trust-policy.json
{
"Role": {
"AssumeRolePolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Effect": "Allow",
"Principal": {
"Service": "ec2.amazonaws.com"
}
}
]
},
"RoleId": "AROAIIZKPBKS2LEXAMPLE",
"CreateDate": "2013-12-12T23:46:37.247Z",
"RoleName": "s3access",
"Path": "/",
"Arn": "arn:aws:iam::123456789012:role/s3access"
}
}
c.
Create an access policy and save it in a text file named ec2-role-access-policy.json.
For example, this policy grants administrative permissions for Amazon S3 to applications running
on the instance.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": ["s3:*"],
"Resource": ["*"]
}
]
}
d.
Attach the access policy to the role.
C:\> aws iam put-role-policy --role-name s3access --policy-name S3-Per
missions --policy-document file://ec2-role-access-policy.json
e.
Create an instance profile named s3access-profile.
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C:\> aws iam create-instance-profile --instance-profile-name S3-Permis
sions
{
"InstanceProfile": {
"InstanceProfileId": "AIPAJTLBPJLEGREXAMPLE",
"Roles": [],
"CreateDate": "2013-12-12T23:53:34.093Z",
"InstanceProfileName": "S3-Permissions",
"Path": "/",
"Arn": "arn:aws:iam::123456789012:instance-profile/S3-Permissions"
}
}
f.
Add the s3access role to the s3access-profile instance profile.
C:\> aws iam add-role-to-instance-profile --instance-profile-name S3Permissions --role-name s3access
For more information about these commands, see create-role, put-role-policy, and create-instanceprofile in the AWS Command Line Interface Reference.
To launch an instance with an IAM role using the AWS CLI
1.
Launch an instance using the instance profile.The following example shows how to launch an instance
with the instance profile.
C:\> aws ec2 run-instances --image-id ami-11aa22bb --iam-instance-profile
Name="S3-Permissions" --key-name my-key-pair --security-groups my-securitygroup --subnet-id subnet-1a2b3c4d
2.
For more information, see run-instances in the AWS Command Line Interface Reference.
If you are using the Amazon EC2 API actions in your application, retrieve the AWS security credentials
made available on the instance and use them to sign the requests. Note that the AWS SDK does
this for you.
C:\> curl http://169.254.169.254/latest/meta-data/iam/security-creden
tials/role_name
Launching an Instance with an IAM Role Using an AWS SDK
If you use an AWS SDK to write your application, you automatically get temporary security credentials
from the role associated with the current instance. The AWS SDK documentation includes walkthroughs
that show how an application can use security credentials from a IAM role to read an Amazon S3 bucket.
For more information, see the following topics in the SDK documentation:
• Using IAM Roles for EC2 Instances with the SDK for Java
• Using IAM Roles for EC2 Instances with the SDK for .NET
• Using IAM Roles for EC2 Instances with the SDK for PHP
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Network Access
• Using IAM Roles for EC2 Instances with the SDK for Ruby
Authorizing Inbound Traffic for Your Instances
To enable network access to your instance, you must allow inbound traffic to your instance. To open a
port for inbound traffic, add a rule to a security group that you associated with your instance when you
launched it.
To connect to your instance, you must set up a rule to authorize RDP traffic from your computer's public
IP address. To allow RDP traffic from additional IP address ranges, add another rule for each range you
need to authorize.
Before You Start
Decide who requires access to your instance; for example, a single host or a specific network that you
trust. In this case, we use your local system's public IP address. You can get the public IP address of
your local computer using a service. For example, we provide the following service: http://checkip.amazonaws.com. To locate another service that provides your IP address, use the search phrase "what is my IP
address". If you are connecting through an ISP or from behind your firewall without a static IP address,
you need to find out the range of IP addresses used by client computers.
Caution
If you use 0.0.0.0/0, you enable all IP addresses to access your instance using RDP. This is
acceptable for a short time in a test environment, but it's unsafe for production environments. In
production, you'll authorize only a specific IP address or range of addresses to access your instance.
For more information about security groups, see Amazon EC2 Security Groups (p. 268).
Adding a Rule for Inbound RDP Traffic to a Windows Instance
Security groups act as a firewall for associated instances, controlling both inbound and outbound traffic
at the instance level. You must add rules to a security group that enable you to connect to your Windows
instance from your IP address using RDP.
To add a rule to a security group for inbound RDP traffic using the console
1.
2.
In the navigation pane of the Amazon EC2 console, click Instances. Select your instance and look
at the Description tab; Security groups lists the security groups that are associated with the instance.
Click view rules to display a list of the rules that are in effect for the instance.
In the navigation pane, click Security Groups. Select one of the security groups associated with
your instance.
3.
In the details pane, on the Inbound tab, click Edit. In the dialog, click Add Rule, and then select
RDP from the Type list.
4.
In the Source field, specify the public IP address of your computer, in CIDR notation. For example,
if your IP address is 203.0.113.25, specify 203.0.113.25/32 to list this single IP address in
CIDR notation. If your company allocates addresses from a range, specify the entire range, such as
203.0.113.0/24.
5.
For information about finding your IP address, see Before You Start (p. 312).
Click Save.
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Amazon VPC
To add a rule to a security group using the command line
You can use one of the following commands. Be sure to run this command on your local system, not on
the instance itself. For more information about these command line interfaces, see Accessing Amazon
EC2 (p. 3).
• authorize-security-group-ingress (AWS CLI)
• ec2-authorize (Amazon EC2 CLI)
• Grant-EC2SecurityGroupIngress (AWS Tools for Windows PowerShell)
Assigning a Security Group to an Instance
You can assign a security group to an instance when you launch the instance. When you add or remove
rules, those changes are automatically applied to all instances to which you've assigned the security
group.
After you launch an instance in EC2-Classic, you can't change its security groups. After you launch an
instance in a VPC, you can change its security groups. For more information, see Changing an Instance's
Security Groups in the Amazon VPC User Guide.
Amazon EC2 and Amazon Virtual Private Cloud
(VPC)
Amazon Virtual Private Cloud (Amazon VPC) enables you to define a virtual network in your own logically
isolated area within the Amazon Web Services (AWS) cloud, known as a virtual private cloud (VPC). You
can launch your AWS resources, such as instances, into your VPC. Your VPC closely resembles a traditional network that you might operate in your own datacenter, with the benefits of using AWS's scalable
infrastructure. You can configure your VPC; you can select its IP address range, create subnets, and
configure route tables, network gateways, and security settings. You can connect instances in your VPC
to the Internet. You can connect your VPC to your own corporate data center, making the AWS cloud an
extension of your datacenter. To protect the resources in each subnet, you can use multiple layers of
security, including security groups and network access control lists. For more information, see the Amazon
VPC User Guide.
Benefits of Using a VPC
By launching your instances into a VPC instead of EC2-Classic, you gain the ability to:
• Assign static private IP addresses to your instances that persist across starts and stops
• Assign multiple IP addresses to your instances
• Define network interfaces, and attach one or more network interfaces to your instances
• Change security group membership for your instances while they're running
• Control the outbound traffic from your instances (egress filtering) in addition to controlling the inbound
traffic to them (ingress filtering)
• Add an additional layer of access control to your instances in the form of network access control lists
(ACL)
• Run your instances on single-tenant hardware
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Differences Between EC2-Classic and EC2-VPC
Differences Between EC2-Classic and EC2-VPC
Instances run in one of two supported platforms: EC2-Classic and EC2-VPC.Your AWS account is capable
of launching instances either into both platforms or only into EC2-VPC, on a region by region basis. If
you can launch instances only into EC2-VPC, we create a default VPC for you. A default VPC combines
the benefits of the advanced features provided by EC2-VPC with the ease of use of EC2-Classic. For
more information, see Supported Platforms (p. 316).
The following table summarizes the differences between instances launched in EC2-Classic, instances
launched in a default VPC, and instances launched in a nondefault VPC.
Characteristic EC2-Classic
Default VPC
Nondefault VPC
Public IP
address (from
Amazon's
public IP
address pool)
Your instance receives a
public IP address.
Your instance launched in
a default subnet receives a
public IP address by
default, unless you specify
otherwise during launch, or
you modify the subnet's
public IP address attribute.
Your instance doesn't
receive a public IP address
by default, unless you
specify otherwise during
launch, or you modify the
subnet's public IP address
attribute.
Private IP
address
Your instance receives a
private IP address from the
EC2-Classic range each
time it's started.
Your instance receives a
static private IP address
from the address range of
your default VPC.
Your instance receives a
static private IP address
from the address range of
your VPC.
Multiple private We select a single private
IP addresses IP address for your
instance; multiple IP
addresses are not
supported.
You can assign multiple
You can assign multiple
private IP addresses to your private IP addresses to your
instance.
instance.
Elastic IP
address
An EIP is disassociated
from your instance when
you stop it.
An EIP remains associated An EIP remains associated
with your instance when
with your instance when
you stop it.
you stop it.
DNS
hostnames
DNS hostnames are
enabled by default.
DNS hostnames are
enabled by default.
DNS hostnames are
disabled by default.
A security group can
reference security groups
for your VPC only.
A security group can
reference security groups
for your VPC only.
You can create up to 100
security groups per VPC.
You can create up to 100
security groups per VPC.
Security group A security group can
reference security groups
that belong to other AWS
accounts.
You can create up to 500
security groups in each
region.
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Characteristic EC2-Classic
Default VPC
Nondefault VPC
Security group You can assign an
association
unlimited number of
security groups to an
instance when you launch
it.
You can assign up to 5
security groups to an
instance.
You can assign up to 5
security groups to an
instance.
You can assign security
groups to your instance
when you launch it and
while it's running.
You can assign security
groups to your instance
when you launch it and
while it's running.
You can add rules for
inbound and outbound
traffic.
You can add rules for
inbound and outbound
traffic.
You can't change the
security groups of your
running instance. You can
either modify the rules of
the assigned security
groups, or replace the
instance with a new one
(create an AMI from the
instance, launch a new
instance from this AMI with
the security groups that you
need, disassociate any
Elastic IP address from the
original instance and
associate it with the new
instance, and then
terminate the original
instance).
Security group You can add rules for
rules
inbound traffic only.
You can add up to 100
rules to a security group.
Tenancy
Your instance runs on
shared hardware.
You can add up to 50 rules You can add up to 50 rules
to a security group.
to a security group.
You can run your instance
on shared hardware or
single-tenant hardware.
You can run your instance
on shared hardware or
single-tenant hardware.
Amazon VPC Documentation
For more information about Amazon VPC, see the Amazon VPC documentation.
Guide
Description
Amazon VPC Getting Started Guide
Provides a hands-on introduction to Amazon VPC.
Amazon VPC User Guide
Provides detailed information about how to use
Amazon VPC.
Amazon VPC Network Administrator Guide
Helps network administrators configure your
customer gateway.
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Supported Platforms
Supported Platforms
Amazon EC2 supports the following platforms. Your AWS account is capable of launching instances
either into both platforms or only into EC2-VPC, on a region by region basis.
Platform
Introduced In
Description
EC2-Classic The original release of
Amazon EC2
Your instances run in a single, flat network that you share
with other customers.
EC2-VPC
Your instances run in a virtual private cloud (VPC) that's
logically isolated to your AWS account.
The original release of
Amazon VPC
For more information about the availability of either platform in your account, see Availability in the Amazon
VPC User Guide.
Supported Platforms in the Amazon EC2 Console
The Amazon EC2 console indicates which platforms you can launch instances into for the selected region,
and whether you have a default VPC in that region.
Verify that the region you'll use is selected in the navigation bar. On the Amazon EC2 console dashboard,
look for Supported Platforms under Account Attributes. If there are two values, EC2 and VPC, you can
launch instances into either platform. If there is one value, VPC, you can launch instances only into EC2VPC.
If you can launch instances only into EC2-VPC, we create a default VPC for you. Then, when you launch
an instance, we launch it into your default VPC, unless you create a nondefault VPC and specify it when
you launch the instance.
EC2-VPC
The dashboard displays the following under Account Attributes to indicate that the account supports
only the EC2-VPC platform, and has a default VPC with the identifier vpc-1a2b3c4d.
If your account supports only EC2-VPC, you can select a VPC from the Network list, and a subnet from
the Subnet list when you launch an instance using the launch wizard.
EC2-Classic, EC2-VPC
The dashboard displays the following under Account Attributes to indicate that the account supports
both the EC2-Classic and EC2-VPC platforms.
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Supported Platforms
If your account supports EC2-Classic and EC2-VPC, you can launch into EC2-Classic using the launch
wizard by selecting Launch into EC2-Classic from the Network list. To launch into a VPC, you can select
a VPC from the Network list, and a subnet from the Subnet list.
Related Topic
For more information about how you can tell which platforms you can launch instances into, see Detecting
Your Supported Platforms in the Amazon VPC User Guide.
Differences Between Instances in EC2-Classic and EC2-VPC
With EC2-Classic, we assign each instance a private IP address from a shared private IP address range.
We also assign each instance a public IP address from Amazon's pool of public IP addresses. Instances
access the Internet directly through the AWS network edge.
With EC2-VPC, we assign each instance a private IP address from the private IP address range of your
VPC. You can control the IP address range, subnets, routing, network gateways, network ACLs, and
security groups for your VPC. You can specify whether your instance receives a public IP address during
launch. Instances with public IP addresses or Elastic IP addresses can access the Internet through a logical Internet gateway attached to the AWS network edge. For more information about EC2-VPC, see
What is Amazon VPC? in the Amazon VPC User Guide.
The following diagram shows instances in each platform. Note the following:
• Instances C1, C2, C3, and C4 are in the EC2-Classic platform. C1 and C2 were launched by one account,
and C3 and C4 were launched by a different account. These instances can communicate with each
other, can access the Internet directly, and can access other services such as Amazon Simple Storage
Service (Amazon S3).
• Instances V1 and V2 are in different subnets in the same VPC in the EC2-VPC platform. They were
launched by the account that owns the VPC; no other account can launch instances in this VPC. These
instances can communicate with each other and can access the following through the Internet gateway:
instances in EC2-Classic, other services (such as Amazon S3), and the Internet.
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Migrating from EC2-Classic to a VPC
For more information about the differences between EC2-Classic and EC2-VPC, see Amazon EC2 and
Amazon Virtual Private Cloud (VPC) (p. 313).
Migrating from EC2-Classic to a VPC
Your AWS account might support both EC2-Classic and EC2-VPC, depending on when you created your
account and which regions you've used. For more information, and to find out which platform your account
supports, see Supported Platforms (p. 316). For more information about the benefits of using a VPC, and
the differences between EC2-Classic and EC2-VPC, see Amazon EC2 and Amazon Virtual Private Cloud
(VPC) (p. 313).
You create and use resources in your AWS account. Some resources and features, such as enhanced
networking and T2 instances, can be used only in a VPC. Some resources in your account can be shared
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between EC2-Classic and a VPC; for example, key pairs. However the following resources cannot be
shared or moved between platforms:
• Security groups
• Elastic IP addresses
• Instances
• Elastic Load Balancers
If your account supports EC2-Classic, you may have already set up a number of resources for use with
EC2-Classic. If you want to migrate to using a VPC, you will have to recreate those resources in your
VPC. We're working on features to help you migrate your resources.
Note
If you use Reserved Instances, you can change the network platform for your Reserved Instances
from EC2-Classic to EC2-VPC.
Migrating to a VPC
This topic provides some basic steps to illustrate how you can migrate to a VPC, and provides an example
of migrating a simple web application.
Topics
• Step 1: Create a VPC (p. 319)
• Step 2: Configure Your Security Group (p. 320)
• Step 3: Create an AMI from Your EC2-Classic Instance (p. 320)
• Step 4: Launch an Instance Into Your VPC (p. 321)
• Example: Migrating a Simple Web Application (p. 322)
Step 1: Create a VPC
To start using a VPC, ensure that you have one in your account. You can create one using one of these
methods:
• Use a new, EC2-VPC-only AWS account. Your EC2-VPC-only account comes with a default VPC in
each region, which is ready for you to use. Instances that you launch are by default launched into this
VPC, unless you specify otherwise. For more information about your default VPC, see Your Default
VPC and Subnets. Use this option if you'd prefer not to set up a VPC yourself, or if you do not need
specific requirements for your VPC configuration.
• In your existing AWS account, open the Amazon VPC console and use the VPC wizard to create a
new VPC. For more information, see Scenarios for Amazon VPC. Use this option if you want to set up
a VPC quickly in your existing EC2-Classic account, using one of the available configuration sets in
the wizard. You'll specify this VPC each time you launch an instance.
• In your existing AWS account, open the Amazon VPC console and set up the components of a VPC
according to your requirements. For more information, see Your VPC and Subnets. Use this option if
you have specific requirements for your VPC, such as a particular number of subnets. You'll specify
this VPC each time you launch an instance.
Note
T2 instance types must be launched into a VPC. If you do not have any VPCs in your EC2Classic account, and you use the launch wizard in the Amazon EC2 console to launch a T2 instance, the wizard creates a nondefault VPC for you. For more information about T2 instance
types, see T2 Instances (p. 77). Your T2 instance will not be able to communicate with your
EC2-Classic instances using private IP addresses. Consider migrating your existing instances
to the same VPC using the methods outlined in this topic.
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Step 2: Configure Your Security Group
You cannot use the same security groups between EC2-Classic and a VPC. However, if you want your
instances in your VPC to have the same security group rules as your EC2-Classic instances, you can
use the Amazon EC2 console to copy your existing EC2-Classic security group rules to a new VPC security group.
Important
You can only copy security group rules to a new security group in the same AWS account in the
same region. If you've created a new AWS account, you cannot use this method to copy your
existing security group rules to your new account. You'll have to create a new security group,
and add the rules yourself. For more information about creating a new security group, see
Amazon EC2 Security Groups (p. 268).
To copy your security group rules to a new security group
1.
Open the Amazon EC2 console.
2.
3.
In the navigation pane, click Security Groups.
Select the security group that's associated with your EC2-Classic instance, then click Actions and
select Copy to new.
In the Create Security Group dialog box, specify a name and description for your new security
group. Select your VPC from the VPC list.
The Inbound tab is populated with the rules from your EC2-Classic security group. You can modify
the rules as required. In the Outbound tab, a rule that allows all outbound traffic has automatically
been created for you. For more information about modifying security group rules, see Amazon EC2
Security Groups (p. 268).
4.
5.
Note
If you've defined a rule in your EC2-Classic security group that references another security
group, you will not be able to use the same rule in your VPC security group. Modify the rule
to reference a security group in the same VPC.
6.
Click Create.
Step 3: Create an AMI from Your EC2-Classic Instance
An AMI is a template for launching your instance. You can create your own AMI based on an existing
EC2-Classic instance, then use that AMI to launch instances into your VPC.
The method you use to create your AMI depends on the root device type of your instance, and the operating system platform on which your instance runs. To find out the root device type of your instance, go
to the Instances page, select your instance, and look at the information in the Root device type field in
the Description tab. If the value is ebs, then your instance is EBS-backed. If the value is instancestore, then your instance is instance store-backed. You can also use the describe-instances AWS CLI
command to find out the root device type.
The following table provides options for you to create your AMI based on the root device type of your instance, and the software platform.
Instance Root Device
Type
Action
EBS
Create an EBS-backed AMI from your instance. For more information, see
Creating an Amazon EBS-Backed Windows AMI (p. 62).
Instance store
Bundle your instance, and then create an instance store-backed AMI from
the manifest that's created during bundling. For more information, see Creating
an Instance Store-Backed Windows AMI (p. 64).
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(Optional) Store Your Data on Amazon EBS Volumes
You can create an Amazon EBS volume and use it to back up and store the data on your instance—like
you would use a physical hard drive. Amazon EBS volumes can be attached and detached from any instance in the same Availability Zone. You can detach a volume from your instance in EC2-Classic, and
attach it to a new instance that you launch into your VPC in the same Availability Zone.
For more information about Amazon EBS volumes, see the following topics:
• Amazon EBS Volumes (p. 357)
• Creating an Amazon EBS Volume (p. 361)
• Attaching an Amazon EBS Volume to an Instance (p. 365)
To back up the data on your Amazon EBS volume, you can take periodic snapshots of your volume. If
you need to, you can restore an Amazon EBS volume from your snapshot. For more information about
Amazon EBS snapshots, see the following topics:
• Amazon EBS Snapshots (p. 385)
• Creating an Amazon EBS Snapshot (p. 386)
• Restoring an Amazon EBS Volume from a Snapshot (p. 363)
Step 4: Launch an Instance Into Your VPC
After you've created an AMI, you can launch an instance into your VPC. The instance will have the same
data and configurations as your existing EC2-Classic instance.
You can either launch your instance into a VPC that you've created in your existing account, or into a
new, VPC-only AWS account.
Using Your Existing EC2-Classic Account
You can use the Amazon EC2 launch wizard to launch an instance into your VPC.
To launch an instance into your VPC
1.
2.
3.
Open the Amazon EC2 console.
On the dashboard, click Launch Instance.
On the Choose an Amazon Machine Image page, select the My AMIs category, and select the
AMI you created.
4.
On the Choose an Instance Type page, select the type of instance, and click Next: Configure Instance Details.
5.
On the Configure Instance Details page, select your VPC from the Network list. Select the required
subnet from the Subnet list. Configure any other details you require, then click through the next
pages of the wizard until you reach the Configure Security Group page.
Select Select an existing group, and select the security group you created earlier. Click Review
and Launch.
Review your instance details, then click Launch to specify a key pair and launch your instance.
6.
7.
For more information about the parameters you can configure in each step of the wizard, see Launching
an Instance (p. 131).
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Using Your New, VPC-Only Account
To launch an instance in your new AWS account, you'll first have to share the AMI you created with your
new account. You can then use the Amazon EC2 launch wizard to launch an instance into your default
VPC.
To share an AMI with your new AWS account
1.
2.
In the account in which you created your AMI, open the Amazon EC2 console.
In the navigation pane, click AMIs.
3.
4.
In the Filter list, ensure Owned by me is selected, then select your AMI.
In the Permissions tab, click Edit. Enter the account number of your new AWS account, click Add
Permission, and then click Save.
To launch an instance into your default VPC
1.
2.
3.
4.
5.
6.
7.
In your new AWS account, open the Amazon EC2 console.
In the navigation pane, click AMIs.
In the Filter list, select Private images. Select the AMI that you shared from your EC2-Classic account,
then click Launch.
On the Choose an Instance Type page, select the type of instance, and click Next: Configure Instance Details.
On the Configure Instance Details page, your default VPC should be selected in the Network list.
Configure any other details you require, then click through the next pages of the wizard until you
reach the Configure Security Group page.
Select Select an existing group, and select the security group you created earlier. Click Review
and Launch.
Review your instance details, then click Launch to specify a key pair and launch your instance.
For more information about the parameters you can configure in each step of the wizard, see Launching
an Instance (p. 131).
Example: Migrating a Simple Web Application
In this example, you use AWS to host your gardening website. To manage your website, you have three
running instances in EC2-Classic. Instances A and B host your public-facing web application, and you
use an Elastic Load Balancer to load balance the traffic between these instances. You've assigned
Elastic IP addresses to instances A and B so that you have static IP addresses for configuration and administration tasks on those instances. Instance C holds your MySQL database for your website. You've
registered the domain name www.garden.example.com, and you've used Amazon Route 53 to create
a hosted zone with an alias record set that's associated with the DNS name of your load balancer.
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Migrating from EC2-Classic to a VPC
The first part of migrating to a VPC is deciding what kind of VPC architecture will suit your needs. In this
case, you've decided on the following: one public subnet for your web servers, and one private subnet
for your database server. As your website grows, you can add more web servers and database servers
to your subnets. By default, instances in the private subnet cannot access the Internet; however, you can
enable Internet access through a Network Address Translation (NAT) instance in the public subnet. You
may want to set up a NAT instance to support periodic updates and patches from the Internet for your
database server. You'll assign new Elastic IP addresses to your web servers, and create an Elastic Load
Balancer in your public subnet to load balance the traffic between your web servers.
To migrate your web application to a VPC, you can follow these steps:
• Create a VPC: In this case, you can use the VPC wizard in the Amazon VPC console to create your
VPC and subnets. The second wizard configuration creates a VPC with one private and one public
subnet, and launches and configures a NAT instance in your public subnet for you. For more information,
see Scenario 2: VPC with Public and Private Subnets in the Amazon VPC User Guide.
• Create AMIs from your instances: Create an AMI from one of your web servers, and a second AMI
from your database server. For more information, see Step 3: Create an AMI from Your EC2-Classic
Instance (p. 320).
• Configure your security groups: In your EC2-Classic environment, you have one security group for
your web servers, and another security group for your database server. You can use the Amazon EC2
console to copy the rules from each security group into new security groups for your VPC. For more
information, see Step 2: Configure Your Security Group (p. 320).
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Instance IP Addressing
Tip
Create the security groups that are referenced by other security groups first.
• Launch an instance into your new VPC: Launch replacement web servers into your public subnet,
and launch your replacement database server into your private subnet. For more information, see Step
4: Launch an Instance Into Your VPC (p. 321).
• Create new Elastic IP addresses: You cannot use your EC2-Classic Elastic IP addresses in a VPC.
Instead, create new Elastic IP addresses for use in a VPC, and assign them to your web servers. For
more information, see Elastic IP Addresses (EIP) (p. 333).
• Configure your NAT instance: If you want to make use of your NAT instance to allow your database
server to access the Internet, you'll have to create a security group for your NAT instance that allows
HTTP and HTTPS traffic from your private subnet. For more information, see NAT Instances.
• Configure your database: When you created an AMI from your database server in EC2-Classic, all
the configuration information that was stored in that instance was copied to the AMI. You may have to
connect to your new database server and update the configuration details; for example, if you configured
your database to grant full read, write, and modification permissions to your web servers in EC2-Classic,
you'll have to update the configuration files to grant the same permissions to your new VPC web servers
instead.
Note
Currently, there is no process that allows you to connect your EC2-Classic instances directly
to instances in your VPC; for example, to synchronize data between them. We are working
on tools to help you with this task. In the meantime, you may want to explore options such as
SSH tunneling to achieve this.
• Configure your web servers: Your web servers will have the same configuration settings as your instances in EC2-Classic. For example, if you configured your web servers to use the database in EC2Classic, update your web servers' configuration settings to point to your new database instance.
Note
By default, instances launched into a nondefault subnet are not assigned a public IP address,
unless you specify otherwise at launch. Your new database server may not have a public IP
address. In this case, you can update your web servers' configuration file to use your new
database server's private DNS name. Instances in the same VPC can communicate with each
other via private IP address.
• Create a new load balancer: To continue using Elastic Load Balancing to load balance the traffic to
your instances, make sure you understand the various ways you can configure your load balancer in
VPC. For more information, see Elastic Load Balancing in Amazon VPC.
• Update your DNS records: After you've set up your load balancer in your public subnet, ensure that
your www.garden.example.com domain points to your new load balancer. To do this, you'll need to
update your DNS records and update your alias record set in Amazon Route 53. For more information
about using Amazon Route 53, see Getting Started with Amazon Route 53.
• Shut down your EC2-Classic resources: After you've verified that your web application is working
from within the VPC architecture, you can shut down your EC2-Classic resources to stop incurring
charges for them. Terminate your EC2-Classic instances, and release your EC2-Classic Elastic IP
addresses.
Amazon EC2 Instance IP Addressing
We provide your instances with IP addresses and DNS hostnames. These can vary depending on
whether you launched the instance in the EC2-Classic platform or in a virtual private cloud (VPC).
For information about the EC2-Classic and EC2-VPC platforms, see Supported Platforms (p. 316). For
information about Amazon VPC, see What is Amazon VPC? in the Amazon VPC User Guide.
Contents
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Private Addresses and Internal DNS Hostnames
• Private Addresses and Internal DNS Hostnames (p. 325)
• Public IP Addresses and External DNS Hostnames (p. 325)
• Differences Between EC2-Classic and EC2-VPC (p. 326)
• Determining Your Public, Private, and Elastic IP Addresses (p. 327)
• Assigning a Public IP Address (p. 328)
• Multiple Private IP Addresses (p. 329)
Private Addresses and Internal DNS Hostnames
You can use private IP addresses and internal DNS hostnames for communication between instances
in the same network (EC2-Classic or a VPC). Private IP addresses are not reachable from the Internet.
For more information about private IP addresses, see RFC 1918.
When you launch an instance, we allocate a private IP address for the instance using DHCP.
Each instance that you launch into a VPC has a default network interface. The network interface specifies
the primary private IP address for the instance. If you don't select a primary private IP address, we select
an available IP address in the subnet's range. You can specify additional private IP addresses, known
as secondary private IP addresses. Unlike primary private IP addresses, secondary private IP addresses
can be reassigned from one instance to another. For more information, see Multiple Private IP Addresses (p. 329).
Each instance is provided an internal DNS hostname that resolves to the private IP address of the instance
in EC2-Classic or your VPC. We can't resolve the DNS hostname outside the network that the instance
is in.
If you create a custom firewall configuration in EC2-Classic, you must allow inbound traffic from port 53
(with a destination port from the ephemeral range) from the address of the Amazon DNS server; otherwise,
internal DNS resolution from your instances fails. If your firewall doesn't automatically allow DNS query
responses, then you'll need to allow traffic from the IP address of the Amazon DNS server. To get the IP
address of the Amazon DNS Server on Windows, use the following command: ipconfig /all | findstr
/c:"DNS Servers".
For instances launched in EC2-Classic, a private IP address is associated with the instance until it is
stopped or terminated.
For instances launched in a VPC, a private IP address remains associated with the network interface
when the instance is stopped and restarted, and is released when the instance is terminated.
Public IP Addresses and External DNS Hostnames
You can use public IP addresses and external DNS hostnames for communication between your instances
and the Internet or other AWS products, such as Amazon Simple Storage Service (Amazon S3). Public
IP addresses are reachable from the Internet.
When you launch an instance in EC2-Classic, we automatically assign a public IP address to the instance.
You cannot modify this behavior. When you launch an instance into EC2-VPC, you can control whether
your instance receives a public IP address. The public IP address is assigned to the eth0 network interface
(the primary network interface).
When you launch an instance into a VPC, your subnet has an attribute that determines whether instances
launched into that subnet receive a public IP address. By default, we don't automatically assign a public
IP address to an instance that you launch in a nondefault subnet. Therefore, if you want an instance in
a nondefault subnet to communicate with the Internet, you must either enable the public IP addressing
feature during launch, or associate an Elastic IP address with the primary or any secondary private IP
address assigned to the network interface for the instance. You can also modify the public IP addressing
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attribute of a nondefault subnet to specify that instances that are launched into that subnet should receive
a public IP address. For more information, see Modifying Your Subnet's Public IP Addressing Behavior
in the Amazon VPC User Guide.
Note
T2 instance types can only be launched into a VPC. If you use the Amazon EC2 launch wizard
to launch a T2 instance type in your EC2-Classic account, and you have no VPCs, the launch
wizard creates a nondefault VPC for you, and modifies the subnet's attribute to automatically
request a public IP address for your instance. For more information about T2 instance types,
see T2 Instances (p. 77).
A public IP address is assigned to your instance from Amazon's pool of public IP addresses, and is not
associated with your AWS account. When a public IP address is disassociated from your instance, it is
released back into the public IP address pool, and you cannot reuse it.
You cannot manually associate or disassociate a public IP address from your instance. Instead, in certain
cases, we release the public IP address from your instance, or assign it a new one:
• We release the public IP address for your instance when it's stopped or terminated. Your stopped instance receives a new public IP address when it's restarted.
• We release the public IP address for your instance when you associate an Elastic IP address (EIP)
with your instance, or when you associate an EIP with the primary network interface (eth0) of your instance in a VPC. When you disassociate the EIP from your instance, it receives a new public IP address.
• If the public IP address of your instance in a VPC has been released, it will not receive a new one if
there is more than one network interface attached to your instance.
If you require a persistent public IP address that can be associated to and from instances as you require,
use an Elastic IP address (EIP) instead. You can allocate your own EIP, and associate it to your instance.
For more information, see Elastic IP Addresses (EIP) (p. 333).
We provide each instance that has a public IP address with an external DNS hostname. We resolve an
external DNS hostname to the public IP address of the instance outside the network of the instance, and
to the private IP address of the instance from within the network of the instance. If your instance is in a
VPC and you assign it an Elastic IP address, it receives a DNS hostname if DNS hostnames are enabled.
For more information, see Using DNS with Your VPC in the Amazon VPC User Guide.
The private IP address and public IP address for an instance are directly mapped to each other through
network address translation (NAT). For more information about NAT, see RFC 1631: The IP Network
Address Translator (NAT).
Note
Instances that access other instances through their public NAT IP address are charged for regional or Internet data transfer, depending on whether the instances are in the same region.
Differences Between EC2-Classic and EC2-VPC
The following table summarizes the differences between IP addresses for instances launched in EC2Classic, instances launched in a default subnet, and instances launched in a nondefault subnet.
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Characteristic EC2-Classic
Default Subnet
Nondefault Subnet
Public IP
address
(from
Amazon's
public IP
address
pool)
Your instance receives a
public IP address.
Your instance launched in
a default subnet receives a
public IP address by
default, unless you specify
otherwise during launch, or
you modify the subnet's
public IP address attribute.
Your instance doesn't
receive a public IP address
by default, unless you
specify otherwise during
launch, or you modify the
subnet's public IP address
attribute.
Private IP
address
Your instance receives a
private IP address from the
EC2-Classic range each time
it's started.
Your instance receives a
static private IP address
from the address range of
your default VPC.
Your instance receives a
static private IP address from
the address range of your
VPC.
Multiple IP
addresses
We select a single private IP You can assign multiple
You can assign multiple
address for your instance;
private IP addresses to your private IP addresses to your
multiple IP addresses are not instance.
instance.
supported.
Network
interfaces
IP addresses are associated IP addresses are
with the instance; network
associated with a network
interfaces aren't supported. interface. Each instance
has one or more network
interfaces.
Elastic IP
address
An EIP is disassociated from An EIP remains associated An EIP remains associated
your instance when you stop with your instance when
with your instance when you
it.
you stop it.
stop it.
DNS
hostnames
DNS hostnames are enabled DNS hostnames are
by default.
enabled by default.
IP addresses are associated
with a network interface.
Each instance has one or
more network interfaces.
DNS hostnames are
disabled by default.
Determining Your Public, Private, and Elastic IP
Addresses
You can use the EC2 console to determine the private IP addresses, public IP addresses, and EIPs of
your instances.
To determine your instance's IP addresses using the console
1.
2.
Open the Amazon EC2 console.
Click Instances in the navigation pane.
3.
4.
Select an instance. The console displays information about the instance in the lower pane.
Get the public IP address from the Public IP field.
5.
6.
If an EIP has been associated with the instance, get the EIP from the Elastic IP field.
Get the private IP address from the Private IP field.
You can also determine the public and private IP addresses of your instances using instance metadata.
For more information, see Instance Metadata and User Data (p. 101).
To determine your instance's IP addresses using instance metadata
1.
Connect to the instance.
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2.
Use the following command to access the private IP address:
C:\> GET http://169.254.169.254/latest/meta-data/local-ipv4
3.
Use the following command to access the public IP address:
C:\> GET http://169.254.169.254/latest/meta-data/public-ipv4
Note that if an EIP is associated with the instance, the value returned is that of the EIP.
Assigning a Public IP Address
If you launch an instance in EC2-Classic, it is assigned a public IP address by default. You can't modify
this behavior.
In a VPC, all subnets have an attribute that determines whether instances launched into that subnet are
assigned a public IP address. By default, nondefault subnets have this attribute set to false, and default
subnets have this attribute set to true. If you launch an instance into a VPC, a public IP addressing feature
is available for you to control whether your instance is assigned a public IP address - you can override
the default behavior of the subnet's IP addressing attribute. The public IP address is assigned from
Amazon's pool of public IP addresses, and is assigned to the network interface with the device index of
eth0. This feature depends on certain conditions at the time you launch your instance.
Important
You can't manually disassociate the public IP address from your instance after launch. Instead,
it's automatically released in certain cases, after which you cannot reuse it. For more information,
see Public IP Addresses and External DNS Hostnames (p. 325). If you require a persistent public
IP address that you can associate or disassociate at will, assign an Elastic IP address to the instance after launch instead. For more information, see Elastic IP Addresses (EIP) (p. 333).
To access the public IP addressing feature when launching an instance
1.
2.
3.
Open the Amazon EC2 console.
Click Launch Instance.
Choose an AMI and click its Select button, then choose an instance type and click Next: Configure
Instance Details.
4.
On the Configure Instance Details page, select a VPC from the Network list. An Auto-assign
Public IP list is displayed. Select Enable or Disable to override the default setting for the subnet.
The following rules apply:
• A public IP address can only be assigned to a single network interface with the device index of
eth0. The Auto-assign Public IP list is not available if you're launching with multiple network interfaces, and is not available for the eth1 network interface.
• You can only assign a public IP address to a new network interface, not an existing one.
5.
6.
Follow the steps on the next pages of the wizard to complete your instance's setup. For more information about the wizard configuration options, see Launching an Instance (p. 131). On the final Review
Instance Launch page, review your settings, and then click Launch to choose a key pair and launch
your instance.
On the Instances page, select your new instance and view its public IP address in Public IP field
in the details pane.
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The public IP addressing feature is only available during launch. However, whether you assign a public
IP address to your instance during launch or not, you can associate an Elastic IP address with your instance
after it's launched. For more information, see Elastic IP Addresses (EIP) (p. 333). You can also modify
your subnet's public IP addressing behavior. For more information, see Modifying Your Subnet's Public
IP Addressing Behavior.
API and Command Line Tools for Public IP Addressing
To enable or disable the public IP addressing feature, use one of the methods in the table below. For
more information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
Method
Parameter
AWS CLI
Use the --associate-public-ip-address or the
--no-associate-public-ip-address option with the
run-instances command.
Amazon EC2 CLI
Use the --associate-public-ip-address option with the
ec2-run-instances command.
AWS Tools for Windows
PowerShell
Use the -AssociatePublicIp parameter with the New-EC2Instance
command.
Query API
Use the NetworkInterface.n.AssociatePublicIpAddress
parameter with the RunInstances request.
Multiple Private IP Addresses
In EC2-VPC, you can specify multiple private IP addresses for your instances. The number of network
interfaces and private IP addresses that you can specify for an instance depends on the instance type.
For more information, see Private IP Addresses Per ENI Per Instance Type (p. 339).
It can be useful to assign multiple private IP addresses to an instance in your VPC to do the following:
• Host multiple websites on a single server by using multiple SSL certificates on a single server and associating each certificate with a specific IP address.
• Operate network appliances, such as firewalls or load balancers, that have multiple private IP addresses
for each network interface.
• Redirect internal traffic to a standby instance in case your instance fails, by reassigning the secondary
private IP address to the standby instance.
Contents
• How Multiple IP Addresses Work (p. 329)
• Assigning a Secondary Private IP Address (p. 330)
• Configuring the Operating System on Your Instance to Recognize the Secondary Private IP Address
(p. 332)
• Associating an Elastic IP Address with the Secondary Private IP Address (p. 332)
• Viewing Your Secondary Private IP Addresses (p. 332)
• Unassigning a Secondary Private IP Address (p. 333)
How Multiple IP Addresses Work
The following list explains how multiple IP addresses work with network interfaces:
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• You can assign a secondary private IP address to any network interface. The network interface can
be attached to or detached from the instance.
• You must choose a secondary private IP address that's in the CIDR block range of the subnet for the
network interface.
• Security groups apply to network interfaces, not to IP addresses. Therefore, IP addresses are subject
to the security group of the network interface in which they're specified.
• Secondary private IP addresses can be assigned and unassigned to elastic network interfaces attached
to running or stopped instances.
• Secondary private IP addresses that are assigned to a network interface can be reassigned to another
one if you explicitly allow it.
• When assigning multiple secondary private IP addresses to a network interface using the command
line tools or API, the entire operation fails if one of the secondary private IP addresses can't be assigned.
• Primary private IP addresses, secondary private IP addresses, and any associated Elastic IP addresses
remain with the network interface when it is detached from an instance or attached to another instance.
• Although you can't move the primary network interface from an instance, you can reassign the secondary
private IP address of the primary network interface to another network interface.
• You can move any additional network interface from one instance to another.
The following list explains how multiple IP addresses work with Elastic IP addresses:
• Each private IP address can be associated with a single Elastic IP address, and vice versa.
• When a secondary private IP address is reassigned to another interface, the secondary private IP address retains its association with an Elastic IP address.
• When a secondary private IP address is unassigned from an interface, an associated Elastic IP address
is automatically disassociated from the secondary private IP address.
Assigning a Secondary Private IP Address
You can assign the secondary private IP address to the network interface for an instance as you launch
the instance, or after the instance is running.
To assign a secondary private IP address when launching an instance in EC2-VPC
1.
2.
Open the Amazon EC2 console.
Click the Launch Instance button.
3.
Choose an AMI and click its Select button, then choose an instance type and click Next: Configure
Instance Details.
On the Configure Instance Details page, choose a VPC from the Network list, and a subnet from
the Subnet list.
4.
5.
In the Network Interfaces section, do the following, and then click Next: Add Storage:
a.
b.
c.
Click Add Device to add another network interface. The console enables you specify up to 2
network interfaces when you launch an instance. After you launch the instance, click Network
Interfaces in the navigation pane to add additional network interfaces. The total number of
network interfaces that you can attach varies by instance type. For more information, see Private
IP Addresses Per ENI Per Instance Type (p. 339).
For each network interface, you can specify a primary private IP address, and one or more
secondary private IP addresses. For this example, however, accept the IP address that we
automatically assign.
Under Secondary IP addresses, click Add IP, and then enter a private IP address in the subnet
range, or accept the default, Auto-assign, to let us select an address.
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Important
After you have added a secondary private IP address to a network interface, you must
connect to the instance and configure the secondary private IP address on the instance
itself. For more information, see Configuring the Operating System on Your Instance
to Recognize the Secondary Private IP Address (p. 332).
6.
On the next Add Storage page, you can specify volumes to attach to the instance besides the
volumes specified by the AMI (such as the root device volume), and then click Next: Tag Instance.
7.
On the Tag Instance page, specify tags for the instance, such as a user-friendly name, and then
click Next: Configure Security Group.
On the Configure Security Group page, select an existing security group or create a new one. Click
Review and Launch.
On the Review Instance Launch page, review your settings, and then click Launch to choose a
key pair and launch your instance. If you're new to Amazon EC2 and haven't created any key pairs,
the wizard prompts you to create one.
8.
9.
To assign a secondary IP address during launch using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• The --secondary-private-ip-addresses option with the run-instances command (AWS CLI)
• The --secondary-private-ip-address option with the ec2-run-instances command (Amazon
EC2 CLI)
To assign a secondary private IP to an existing instance
1.
2.
3.
4.
Open the Amazon EC2 console.
In the navigation pane, click Network Interfaces, and then right-click the network interface attached
to the instance.
Select Manage Private IP Addresses.
In the Manage Private IP Addresses dialog box, do the following:
a.
b.
Click Assign new IP.
Enter a specific IP address that's within the subnet range for the instance, or leave the field blank
and we'll select an IP address for you.
c.
(Optional) Select Allow reassignment to allow the secondary private IP address to be reassigned
if it is already assigned to another network interface.
d.
Click Yes, Update, and then click Close.
Note
You can also assign a secondary private IP address to an instance by clicking Instances
in the navigation pane, right-clicking your instance, and selecting Manage Private IP Addresses.You can configure the same information in the dialog as you did in the steps above.
To assign a secondary private IP to an existing instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• assign-private-ip-addresses (AWS CLI)
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• ec2-assign-private-ip-addresses (Amazon EC2 CLI)
• Register-EC2PrivateIpAddress (AWS Tools for Windows PowerShell)
Configuring the Operating System on Your Instance to Recognize the Secondary Private IP Address
After you assign a secondary private IP address to your instance, you need to configure the operating
system on your instance to recognize the secondary private IP address.
For information about configuring a Windows instance, see Configuring a Secondary Private IP Address
for Your Windows Instance in a VPC (p. 183).
Associating an Elastic IP Address with the Secondary Private
IP Address
To associate an EIP with a secondary private IP address in EC2-VPC
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
Click Elastic IPs in the navigation pane.
Right-click the IP address, and then click Associate.
In the Associate Address dialog box, select the network interface from the Network Interface dropdown list, and then select the secondary IP address from the Private IP address drop-down list.
Click Associate.
To associate an EIP with a secondary private IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• associate-address (AWS CLI)
• ec2-associate-address (Amazon EC2 CLI)
• Register-EC2Address (AWS Tools for Windows PowerShell)
Viewing Your Secondary Private IP Addresses
To view the private IP addresses assigned to a network interface in EC2-VPC
1.
Open the Amazon EC2 console.
2.
Click Network Interfaces in the navigation pane.
3.
4.
Select the network interface whose private IP addresses you want to view.
On the Details tab in the details pane, check the Primary private IP and Secondary private IPs
fields for the primary private IP address and any secondary private IP addresses assigned to the
network interface.
To view the private IP addresses assigned to an instance
1.
Open the Amazon EC2 console.
2.
3.
Click Instances in the navigation pane.
Select the instance whose private IP addresses you want to view.
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4.
On the Description tab in the details pane, check the Private IPs and Secondary private IPs fields
for the primary private IP address and any secondary private IP addresses assigned to the instance
through its network interface.
Unassigning a Secondary Private IP Address
If you no longer require a secondary private IP address, you can unassign it from the instance or the
network interface. When a secondary private IP address is unassigned from an elastic network interface,
the Elastic IP address (if it exists) is also disassociated.
To unassign a secondary private IP address from an instance
1.
2.
3.
Open the Amazon EC2 console.
Click Instances in the navigation pane.
Right-click an instance, and then click Manage Private IP Addresses.
4.
In the Manage Private IP Addresses dialog box, beside the secondary private IP address to unassign,
click Unassign.
Click Yes, Update, and then close the dialog box.
5.
To unassign a secondary private IP address from a network interface
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
Click Network Interface in the navigation pane.
Right-click an instance, and the click Manage Private IP Addresses.
In the Manage Private IP Addresses dialog box, beside the secondary private IP address to unassign,
click Unassign.
Click Yes, Update, and then click Close.
To unassign a secondary private IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• unassign-private-ip-addresses (AWS CLI)
• ec2-unassign-private-ip-addresses (Amazon EC2 CLI)
• Unregister-EC2PrivateIpAddress (AWS Tools for Windows PowerShell)
Elastic IP Addresses (EIP)
An Elastic IP address (EIP) is a static IP address designed for dynamic cloud computing. With an EIP,
you can mask the failure of an instance or software by rapidly remapping the address to another instance
in your account. Your EIP is associated with your AWS account, not a particular instance, and it remains
associated with your account until you choose to explicitly release it.
There's one pool of EIPs for use with the EC2-Classic platform and another for use with your VPC. You
can't associate an EIP that you allocated for use with a VPC with an instance in EC2-Classic, and viceversa. For more information about EC2-Classic and EC2-VPC, see Supported Platforms (p. 316).
Topics
• Elastic IP Addresses in EC2-Classic (p. 334)
• Elastic IP Addresses in a VPC (p. 334)
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Elastic IP Addresses in EC2-Classic
• Differences Between EC2-Classic and EC2-VPC (p. 335)
• Allocating an Elastic IP Address (p. 335)
• Describing Your Elastic IP Addresses (p. 336)
• Associating an Elastic IP Address with a Running Instance (p. 336)
• Associating an Elastic IP Address with a Different Running Instance (p. 337)
• Releasing an Elastic IP Address (p. 337)
• Using Reverse DNS for Email Applications (p. 338)
• Elastic IP Address Limit (p. 338)
Elastic IP Addresses in EC2-Classic
By default, we assign each instance in EC2-Classic two IP addresses at launch: a private IP address and
a public IP address that is mapped to the private IP address through network address translation (NAT).
The public IP address is allocated from the EC2-Classic public IP address pool, and is associated with
your instance, not with your AWS account. You cannot reuse a public IP address after it's been disassociated from your instance.
If you use dynamic DNS to map an existing DNS name to a new instance's public IP address, it might
take up to 24 hours for the IP address to propagate through the Internet. As a result, new instances might
not receive traffic while terminated instances continue to receive requests. To solve this problem, use an
EIP.
When you associate an EIP with an instance, the instance's current public IP address is released to the
EC2-Classic public IP address pool. If you disassociate an EIP from the instance, the instance is automatically assigned a new public IP address within a few minutes. In addition, stopping the instance also disassociates the EIP from it.
To ensure efficient use of EIPs, we impose a small hourly charge if an EIP is not associated with a running
instance. For more information, see Amazon EC2 Pricing.
Elastic IP Addresses in a VPC
We assign each instance in a default VPC two IP addresses at launch: a private IP address and a public
IP address that is mapped to the private IP address through network address translation (NAT). The
public IP address is allocated from the EC2-VPC public IP address pool, and is associated with your instance, not with your AWS account. You cannot reuse a public IP address after it's been disassociated
from your instance.
We assign each instance in a nondefault VPC only a private IP address, unless you specifically request
a public IP address during launch, or you modify the subnet's public IP address attribute. To ensure that
an instance in a nondefault VPC that has not been assigned a public IP address can communicate with
the Internet, you must allocate an Elastic IP address for use with a VPC, and then associate that EIP with
the elastic network interface (ENI) attached to the instance.
When you associate an EIP with an instance in a default VPC, or an instance in which you assigned a
public IP to the eth0 network interface during launch, its current public IP address is released to the EC2VPC public IP address pool. If you disassociate an EIP from the instance, the instance is automatically
assigned a new public IP address within a few minutes. However, if you have attached a second network
interface to the instance, the instance is not automatically assigned a new public IP address; you'll have
to associate an EIP with it manually. The EIP remains associated with the instance when you stop it.
To ensure efficient use of EIPs, we impose a small hourly charge if an EIP is not associated with a running
instance, or if it is associated with a stopped instance or an unattached network interface. While your instance is running, you are not charged for one EIP associated with the instance, but you are charged for
any additional EIPs associated with the instance. For more information, see Amazon EC2 Pricing.
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Differences Between EC2-Classic and EC2-VPC
For information about using an EIP with an instance in a VPC, see Elastic IP Addresses in the Amazon
VPC User Guide.
Differences Between EC2-Classic and EC2-VPC
The following table lists the differences between EIPs on EC2-Classic and EC2-VPC.
Characteristic
EC2-Classic
EC2-VPC
Allocation
When you allocate an EIP, it's for use
only in EC2-Classic.
When you allocate an EIP, it's for use
only in a VPC.
Association
You associate an EIP with an instance.
An EIP is a property of an elastic
network interface (ENI). You can
associate an EIP with an instance by
updating the ENI attached to the
instance. For more information, see
Elastic Network Interfaces (ENI) (p. 338).
Reassociation
If you try to associate an EIP that's
already associated with another
instance, the address is automatically
associated with the new instance.
If your account supports EC2-VPC only,
and you try to associate an EIP that's
already associated with another
instance, the address is automatically
associated with the new instance. If
you're using a VPC in an EC2-Classic
account, and you try to associate an EIP
that's already associated with another
instance, it succeeds only if you allowed
reassociation.
Instance stop
If you stop an instance, its EIP is
disassociated, and you must
re-associate the EIP when you restart
the instance.
If you stop an instance, its EIP remains
associated.
Multiple IP
Instances support only a single private
IP address and a corresponding EIP.
Instances support multiple IP addresses,
and each one can have a corresponding
EIP. For more information, see Multiple
Private IP Addresses (p. 329).
Allocating an Elastic IP Address
You can allocate an Elastic IP address using the AWS Management Console or the command line.
To allocate an Elastic IP address for use with EC2-Classic using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Elastic IPs in the navigation pane.
Click Allocate New Address.
4.
Select EC2 from the EIP list, and then click Yes, Allocate. Close the confirmation dialog box.
To allocate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
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• allocate-address (AWS CLI)
• ec2-allocate-address (Amazon EC2 CLI)
• New-EC2Address (AWS Tools for Windows PowerShell)
Describing Your Elastic IP Addresses
You can describe an Elastic IP address using the AWS Management Console or the command line.
To describe your Elastic IP addresses using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Elastic IPs in the navigation pane.
Select a filter from the Resource Attribute list to begin searching. You can use multiple filters in a
single search.
To describe your Elastic IP addresses using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-addresses (AWS CLI)
• ec2-describe-addresses (Amazon EC2 CLI)
• Get-EC2Address (AWS Tools for Windows PowerShell)
Associating an Elastic IP Address with a Running
Instance
You can associate an Elastic IP address to an instance using the AWS Management Console or the
command line.
To associate an Elastic IP address with an instance using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Elastic IPs in the navigation pane.
Select an EIP and click Associate Address.
4.
In the Associate Address dialog box, select the instance from the Instance list box and click Associate.
To associate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• associate-address (AWS CLI)
• ec2-associate-address (Amazon EC2 CLI)
• Register-EC2Address (AWS Tools for Windows PowerShell)
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Associating an Elastic IP Address with a Different
Running Instance
You can reassociate an Elastic IP address using the AWS Management Console or the command line.
To reassociate an Elastic IP address using the console
1.
Open the Amazon EC2 console.
2.
3.
Click Elastic IPs in the navigation pane.
Select the EIP, and then click the Disassociate button.
4.
5.
6.
Click Yes, Disassociate when prompted.
Select the EIP, and then click Associate.
In the Associate Address dialog box, select the new instance from the Instance list, and then click
Associate.
To disassociate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• disassociate-address (AWS CLI)
• ec2-disassociate-address (Amazon EC2 CLI)
• Unregister-EC2Address (AWS Tools for Windows PowerShell)
To associate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• associate-address (AWS CLI)
• ec2-associate-address (Amazon EC2 CLI)
• Register-EC2Address (AWS Tools for Windows PowerShell)
Releasing an Elastic IP Address
If you no longer need an EIP, we recommend that you release it (the address must not be associated
with an instance).You incur charges for any EIP that's allocated for use with EC2-Classic but not associated
with an instance.
You can release an Elastic IP address using the AWS Management Console or the command line.
To release an Elastic IP address using the console
1.
Open the Amazon EC2 console.
2.
3.
Click Elastic IPs in the navigation pane.
Select the Elastic IP address, click the Release Address button, and then click Yes, Release when
prompted.
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Using Reverse DNS for Email Applications
To release an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• release-address (AWS CLI)
• ec2-release-address (Amazon EC2 CLI)
• Remove-EC2Address (AWS Tools for Windows PowerShell)
Using Reverse DNS for Email Applications
If you intend to send email to third parties from an instance, we suggest you provision one or more
Elastic IP addresses and provide them to us in the Request to Remove Email Sending Limitations form.
AWS works with ISPs and Internet anti-spam organizations (such as Spamhaus) to reduce the chance
that your email sent from these addresses will be flagged as spam.
In addition, assigning a static reverse DNS record to your Elastic IP address used to send email can help
avoid having email flagged as spam by some anti-spam organizations. You can provide us with a reverse
DNS record to associate with your addresses through the aforementioned form. Note that a corresponding
forward DNS record (A Record) pointing to your Elastic IP address must exist before we can create your
reverse DNS record.
Elastic IP Address Limit
By default, all AWS accounts are limited to 5 EIPs, because public (IPv4) Internet addresses are a scarce
public resource. We strongly encourage you to use an EIP primarily for load balancing use cases, and
use DNS hostnames for all other inter-node communication.
If you feel your architecture warrants additional EIPs, please complete the Amazon EC2 Elastic IP Address
Request Form. We will ask you to describe your use case so that we can understand your need for additional addresses.
Elastic Network Interfaces (ENI)
An elastic network interface (ENI) is a virtual network interface that you can attach to an instance in a
VPC. An ENI can include the following attributes:
• a primary private IP address
• one or more secondary private IP addresses
• one Elastic IP address per private IP address
• one public IP address, which can be auto-assigned to the network interface for eth0 when you launch
an instance, but only when you create a network interface for eth0 instead of using an existing network
interface
• one or more security groups
• a MAC address
• a source/destination check flag
• a description
You can create a network interface, attach it to an instance, detach it from an instance, and attach it to
another instance. The attributes of a network interface follow the network interface as it is attached or
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detached from an instance and reattached to another instance. When you move a network interface from
one instance to another, network traffic is redirected to the new instance.
Each instance in a VPC has a default network interface. The default network interface has a primary
private IP address in the IP address range of its VPC. You can create and attach additional network interfaces. The maximum number of network interfaces that you can use varies by instance type. For more
information, see Private IP Addresses Per ENI Per Instance Type (p. 339).
Attaching multiple network interfaces to an instance is useful when you want to:
• Create a management network.
• Use network and security appliances in your VPC.
• Create dual-homed instances with workloads/roles on distinct subnets.
• Create a low-budget, high-availability solution.
Contents
• Private IP Addresses Per ENI Per Instance Type (p. 339)
• Creating a Management Network (p. 341)
• Use Network and Security Appliances in Your VPC (p. 341)
• Creating Dual-homed Instances with Workloads/Roles on Distinct Subnets (p. 342)
• Create a Low Budget High Availability Solution (p. 342)
• Best Practices for Configuring Network Interfaces (p. 342)
• Creating a Network Interface (p. 342)
• Deleting a Network Interface (p. 343)
• Viewing Details about a Network Interface (p. 343)
• Attaching a Network Interface When Launching an Instance (p. 344)
• Attaching a Network Interface to a Stopped or Running Instance (p. 345)
• Detaching a Network Interface from an Instance (p. 346)
• Changing the Security Group of a Network Interface (p. 346)
• Changing the Source/Destination Checking of a Network Interface (p. 347)
• Associating an Elastic IP Address with a Network Interface (p. 347)
• Disassociating an Elastic IP Address from a Network Interface (p. 348)
• Changing Termination Behavior for a Network Interface (p. 348)
• Adding or Editing a Description for a Network Interface (p. 349)
• Adding or Editing Tags for a Network Interface (p. 349)
Private IP Addresses Per ENI Per Instance Type
The following table lists the maximum number of elastic network interfaces (ENI) per instance type, and
the maximum number of private IP addresses per ENI. ENIs and multiple private IP addresses are only
available for instances running in a VPC. For more information, see Multiple Private IP Addresses (p. 329).
Instance Type
Maximum Interfaces
IP Addresses per Interface
c1.medium
2
6
c1.xlarge
4
15
c3.large
3
10
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Instance Type
Maximum Interfaces
IP Addresses per Interface
c3.xlarge
4
15
c3.2xlarge
4
15
c3.4xlarge
8
30
c3.8xlarge
8
30
cc2.8xlarge
8
30
cg1.4xlarge
8
30
cr1.8xlarge
8
30
g2.2xlarge
4
15
hi1.4xlarge
8
30
hs1.8xlarge
8
30
i2.xlarge
4
15
i2.2xlarge
4
15
i2.4xlarge
8
30
i2.8xlarge
8
30
m1.small
2
4
m1.medium
2
6
m1.large
3
10
m1.xlarge
4
15
m2.xlarge
4
15
m2.2xlarge
4
30
m2.4xlarge
8
30
m3.medium
2
6
m3.large
3
10
m3.xlarge
4
15
m3.2xlarge
4
30
r3.large
3
10
r3.xlarge
4
15
r3.2xlarge
4
15
r3.4xlarge
8
30
r3.8xlarge
8
30
t1.micro
2
2
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t2.small
2
4
t2.medium
3
6
Creating a Management Network
You can create a management network using network interfaces. In this scenario, the secondary network
interface on the instance handles public-facing traffic and the primary network interface handles backend management traffic and is connected to a separate subnet in your VPC that has more restrictive access
controls. The public facing interface, which may or may not be behind a load balancer, has an associated
security group that allows access to the server from the Internet (for example, allow TCP port 80 and 443
from 0.0.0.0/0, or from the load balancer) while the private facing interface has an associated security
group allowing RDP access only from an allowed range of IP addresses either within the VPC or from
the Internet, a private subnet within the VPC or a virtual private gateway.
To ensure failover capabilities, consider using a secondary private IP for incoming traffic on a network
interface. In the event of an instance failure, you can move the interface and/or secondary private IP address to a standby instance.
Use Network and Security Appliances in Your VPC
Some network and security appliances, such as load balancers, network address translation (NAT)
servers, and proxy servers prefer to be configured with multiple network interfaces. You can create and
attach secondary network interfaces to instances in a VPC that are running these types of applications
and configure the additional interfaces with their own public and private IP addresses, security groups,
and source/destination checking.
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on Distinct Subnets
Creating Dual-homed Instances with Workloads/Roles on Distinct Subnets
You can place a network interface on each of your web servers that connects to a mid-tier network where
an application server resides. The application server can also be dual-homed to a back-end network
(subnet) where the database server resides. Instead of routing network packets through the dual-homed
instances, each dual-homed instance receives and processes requests on the front end, initiates a connection to the back end, and then sends requests to the servers on the back-end network.
Create a Low Budget High Availability Solution
If one of your instances serving a particular function fails, its network interface can be attached to a replacement or hot standby instance pre-configured for the same role in order to rapidly recover the service.
For example, you can use an ENI as your primary or secondary network interface to a critical service
such as a database instance or a NAT instance. If the instance fails, you (or more likely, the code running
on your behalf) can attach the ENI to a hot standby instance. Because the interface maintains its private
IP addresses, Elastic IP addresses, and MAC address, network traffic will begin flowing to the standby
instance as soon as you attach the ENI to the replacement instance. Users will experience a brief loss
of connectivity between the time the instance fails and the time that the ENI is attached to the standby
instance, but no changes to the VPC route table or your DNS server are required.
Best Practices for Configuring Network Interfaces
• You can attach a network interface to an instance when it's running (hot attach), when it's stopped
(warm attach), or when the instance is being launched (cold attach).
• You can detach secondary (ethN) network interfaces when the instance is running or stopped. However,
you can't detach the primary (eth0) interface.
• You can attach a network interface in one subnet to an instance in another subnet in the same VPC,
however, both the network interface and the instance must reside in the same Availability Zone.
• When launching an instance from the CLI or API, you can specify the network interfaces to attach to
the instance for both the primary (eth0) and additional network interfaces.
• Launching an instance with multiple network interfaces automatically configures interfaces, private IP
addresses, and route tables on the operating system of the instance. A warm or hot attach of an additional network interface may require you to manually bring up the second interface, configure the private
IP address, and modify the route table accordingly. (Instances running Microsoft Windows Server
automatically recognize the warm or hot attach and configure themselves.)
• Attaching another network interface to an instance is not a method to increase or double the network
bandwidth to or from the dual-homed instance.
Creating a Network Interface
You can create a network interface using the AWS Management Console or the command line.
To create a network interface using the console
1.
Open the Amazon EC2 console.
2.
3.
4.
Click Network Interfaces in the navigation pane.
Click Create Network Interface.
In the Create Network Interface dialog box, provide the following information for the network interface,
and then click Yes, Create.
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a.
b.
c.
d.
In Description, enter a descriptive name.
In Subnet, select the subnet. Note that you can't move the network interface to another subnet
after it's created, and you can only attach the network interface to instances in the same Availability Zone.
In Private IP, enter the primary private IP address. If you don't specify an IP address, we'll select
an available private IP address from within the selected subnet.
In Security groups, select one or more security groups.
To create a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-network-interface (AWS CLI)
• ec2-create-network-interface (Amazon EC2 CLI)
• New-EC2NetworkInterface (AWS Tools for Windows PowerShell)
Deleting a Network Interface
You must first detach a network interface from an instance before you can delete it. Deleting a network
interface releases all attributes associated with the network interface and releases any private IP addresses
or Elastic IP addresses to be used by another instance.
You can delete a network interface using the AWS Management Console or the command line.
To delete a network interface using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Select a network interface, and then click the Delete button.
In the Delete Network Interface dialog box, click Yes, Delete.
To delete a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• delete-network-interface (AWS CLI)
• ec2-delete-network-interface (Amazon EC2 CLI)
• Remove-EC2NetworkInterface (AWS Tools for Windows PowerShell)
Viewing Details about a Network Interface
You can describe a network interface using the AWS Management Console or the command line.
To describe a network interface using the console
1.
2.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
3.
Select the network interface.
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View the details on the Details tab.
To describe a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-network-interfaces (AWS CLI)
• ec2-describe-network-interfaces (Amazon EC2 CLI)
• Get-EC2NetworkInterface (AWS Tools for Windows PowerShell)
To describe a network interface attribute using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-network-interface-attribute (AWS CLI)
• ec2-describe-network-interface-attribute (Amazon EC2 CLI)
• Get-EC2NetworkInterfaceAttribute (AWS Tools for Windows PowerShell)
Attaching a Network Interface When Launching an
Instance
You can attach an additional network interface to an instance when you launch it into a VPC.
Note
If an error occurs when attaching a network interface to your instance, this causes the instance
launch to fail.
You can attach a network interface to an instance using the AWS Management Console or the command
line.
To attach a network interface when launching an instance using the console
1.
Open the Amazon EC2 console.
2.
3.
Click Launch Instance.
Choose an AMI and click its Select button, then choose an instance type and click Next: Configure
Instance Details.
On the Configure Instance Details page, select a VPC from the Network list, and a subnet from
the Subnet list.
4.
To assign a public IP address to your instance, select Enable from the Auto-assign Public IP list
(if you selected a default subnet, you can leave the Use subnet setting option). Note that you can't
assign a public IP address to your instance if you specify an existing network interface for the primary
network interface (eth0) or multiple network interfaces in the next step.
5.
In the Network Interfaces section, the console enables you specify up to 2 network interfaces (new,
existing, or a combination) when you launch an instance. You can also enter a primary IP address
and one or more secondary IP addresses for any new network interface. When you've finished, click
Next: Add Storage.
Note that you can add additional network interfaces to the instance after you launch it. The total
number of network interfaces that you can attach varies by instance type. For more information, see
Private IP Addresses Per ENI Per Instance Type (p. 339).
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Instance
On the next Add Storage page, you can specify volumes to attach to the instance besides the
volumes specified by the AMI (such as the root device volume), and then click Next: Tag Instance.
On the Tag Instance page, specify tags for the instance, such as a user-friendly name, and then
click Next: Configure Security Group.
On the Configure Security Group page, select an existing security group or create a new one. Click
Review and Launch.
On the Review Instance Launch page, details about the primary and additional network interface
are displayed. Review the settings, and then click Launch to choose a key pair and launch your instance. If you're new to Amazon EC2 and haven't created any key pairs, the wizard prompts you to
create one.
To attach a network interface when launching an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• run-instances (AWS CLI)
• ec2-run-instances (Amazon EC2 CLI)
• New-EC2Instance (AWS Tools for Windows PowerShell)
Attaching a Network Interface to a Stopped or
Running Instance
You can attach a network interface to any of your stopped or running instances in your VPC using either
the Instances or Network Interfaces page of the Amazon EC2 console, or using a command line interface.
To attach a network interface to an instance using the Instances page
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Instances in the navigation pane.
Right-click the instance, and then select Attach Network Interface.
In the Attach Network Interface dialog box, select the network interface, and then click Attach.
To attach a network interface to an instance using the Network Interfaces page
1.
Open the Amazon EC2 console.
2.
3.
Click Network Interfaces in the navigation pane.
Select the network interface.
4.
5.
Click the Attach button.
In the Attach Network Interface dialog box, select the instance, and then click Attach.
To attach a network interface to an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• attach-network-interface (AWS CLI)
• ec2-attach-network-interface (Amazon EC2 CLI)
• Add-EC2NetworkInterface (AWS Tools for Windows PowerShell)
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Detaching a Network Interface from an Instance
You can detach an secondary network interface at any time, using either the Instances or Network Interfaces page of the Amazon EC2 console, or using a command line interface.
To detach a network interface from an instance using the Instances page
1.
2.
3.
Open the Amazon EC2 console.
Click Instances in the navigation pane.
Right-click the instance, and then select Detach Network Interface.
4.
In the Detach Network Interface dialog box, select the network interface, and then click Detach.
To detach a network interface from an instance using the Network Interfaces page
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Select the network interface, and then click the Detach button.
In the Detach Network Interface dialog box, click Yes, Detach. If the network interface fails to detach
from the instance, select Force detachment, and then try again.
To detach a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• detach-network-interface (AWS CLI)
• ec2-detach-network-interface (Amazon EC2 CLI)
• Dismount-EC2NetworkInterface (AWS Tools for Windows PowerShell)
Changing the Security Group of a Network Interface
You can change the security groups that are associated with a network interface. When you create the
security group, be sure to specify the same VPC as the subnet for the network interface.
You can change the security group for your network interfaces using the AWS Management Console or
the command line.
Note
To change security group membership for interfaces owned by other Amazon Web Services,
such as Elastic Load Balancing, use the console or command line interface for that service.
To change the security group of a network interface using the console
1.
2.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
3.
4.
Select the network interface.
Right-click the network interface, and then select Change Security Groups.
5.
In the Change Security Groups dialog box, select the security groups to use, and then click Save.
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Changing the Source/Destination Checking of a Network
Interface
To change the security group of a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-network-interface-attribute (AWS CLI)
• ec2-modify-network-interface-attribute (Amazon EC2 CLI)
• Edit-EC2NetworkInterfaceAttribute (AWS Tools for Windows PowerShell)
Changing the Source/Destination Checking of a
Network Interface
The Source/Destination Check attribute controls whether source/destination checking is enabled on the
instance. Disabling this attribute enables an instance to handle network traffic that isn't specifically destined
for the instance. For example, instances running services such as network address translation, routing,
or a firewall should set this value to disabled. The default value is enabled.
You can change source/destination checking using the AWS Management Console or the command line.
To change source/destination checking for a network interface using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Right-click the network interface, and then select Change Source/Dest Check.
In the dialog box, select Enabled (if enabling), or Disabled (if disabling), and then click Save.
To change source/destination checking for a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-network-interface-attribute (AWS CLI)
• ec2-modify-network-interface-attribute (Amazon EC2 CLI)
• Edit-EC2NetworkInterfaceAttribute (AWS Tools for Windows PowerShell)
Associating an Elastic IP Address with a Network
Interface
If you have an Elastic IP address, you can associate it with one of the private IP addresses for the network
interface. You can associate one Elastic IP address with each private IP address.
You can associate an Elastic IP address using the AWS Management Console or the command line.
To associate an Elastic IP address using the console
1.
Open the Amazon EC2 console.
2.
3.
Click Network Interfaces in the navigation pane.
Right-click the network interface, and then select Associate Address.
4.
In the Associate Elastic IP Address dialog box, select the Elastic IP address from the Address
list.
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In Associate to private IP address, select the private IP address to associate with the Elastic IP
address.
Select Allow reassociation to allow the Elastic IP address to be associated with the specified network
interface if it's currently associated with another instance or network interface, and then click Associate Address.
To associate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• associate-address (AWS CLI)
• ec2-associate-address (Amazon EC2 CLI)
• Register-EC2Address (AWS Tools for Windows PowerShell)
Disassociating an Elastic IP Address from a Network Interface
If the network interface has an Elastic IP address associated with it, you can disassociate the address,
and then either associate it with another network interface or release it back to the address pool. Note
that this is the only way to associate an Elastic IP address with an instance in a different subnet or VPC
using a network interface, as network interfaces are specific to a particular subnet.
You can disassociate an Elastic IP address using the AWS Management Console or the command line.
To disassociate an Elastic IP address using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Right-click the network interface, and then select Disassociate Address.
In the Disassociate IP Address dialog box, click Yes, Disassociate.
To disassociate an Elastic IP address using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• disassociate-address (AWS CLI)
• ec2-disassociate-address (Amazon EC2 CLI)
• Unregister-EC2Address (AWS Tools for Windows PowerShell)
Changing Termination Behavior for a Network Interface
You can set the termination behavior for a network interface attached to an instance so that it is automatically deleted when you delete the instance it's attached to.
Note
By default, network interfaces that are automatically created and attached to instances using
the AWS Management Console are set to terminate when the instance terminates. However,
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network interfaces created using the command line interface aren't set to terminate when the
instance terminates.
You can change the terminating behavior for a network interface using the AWS Management Console
or the command line.
To change the termination behavior for a network interface using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Right-click the network interface, and then select Change Termination Behavior.
4.
In the Change Termination Behavior dialog box, select the Delete on termination check box if
you want the network interface to be deleted when you terminate an instance.
To change the termination behavior for a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-network-interface-attribute (AWS CLI)
• ec2-modify-network-interface-attribute (Amazon EC2 CLI)
• Edit-EC2NetworkInterfaceAttribute (AWS Tools for Windows PowerShell)
Adding or Editing a Description for a Network Interface
You can change the description for a network interface using the AWS Management Console or the
command line.
To change the description for a network interface using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Network Interfaces in the navigation pane.
Right-click the network interface, and then select Change Description.
In the Change Description dialog box, enter a description for the network interface, and then click
Save.
To change the description for a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• modify-network-interface-attribute (AWS CLI)
• ec2-modify-network-interface-attribute (Amazon EC2 CLI)
• Edit-EC2NetworkInterfaceAttribute (AWS Tools for Windows PowerShell)
Adding or Editing Tags for a Network Interface
Tags are metadata that you can add to a network interface. Tags are private and are only visible to your
account. Each tag consists of a key and an optional value. For more information about tags, see Tagging
Your Amazon EC2 Resources (p. 433).
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You can tag a resource using the AWS Management Console or the command line.
To add or edit tags for a network interface using the console
1.
Open the Amazon EC2 console.
2.
3.
4.
Click Network Interfaces in the navigation pane.
Select the network interface.
In the details pane, click the Tags tab, and then click Add/Edit Tags.
5.
In the Add/Edit Tags dialog, click Create Tag for each tag you want to create, and enter a key and
optional value. When you're done, click Save.
To add or edit tags for a network interface using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-tags (AWS CLI)
• ec2-create-tags (Amazon EC2 CLI)
• New-EC2Tag (AWS Tools for Windows PowerShell)
Enabling Enhanced Networking on Windows
Instances in a VPC
With C3, R3, and I2 instances, you can enable enhanced networking capabilities. Amazon EC2 supports
enhanced networking capabilities using single root I/O virtualization (SR-IOV). Enabling enhanced networking on your instance results in higher performance (packets per second), lower latency, and lower
jitter.
Important
Enhanced networking is already enabled for Windows Server 2012 R2 AMIs. Therefore, if you
launch an instance using these AMIs, enhanced networking is already enabled without the need
to complete the procedures on this page.
Contents
• Requirements (p. 350)
• Testing Whether Enhanced Networking Is Enabled (p. 351)
• Enabling Enhanced Networking on Windows (p. 352)
Note that you can get directions for Linux from Enabling Enhanced Networking on Linux Instances in a
VPC in the Amazon EC2 User Guide for Linux Instances.
Requirements
Before enabling enhanced networking, make sure you do the following:
• Launch the instance from a 64-bit English HVM AMI for Windows Server 2012 or Windows Server 2008
R2. (You can't enable enhanced networking on Windows Server 2008 and Windows Server 2003, and
enhanced networking is already enabled on Windows Server 2012 R2.)
• Launch the instance using one of the following instance types: c3.large, c3.xlarge, c3.2xlarge,
c3.4xlarge, c3.8xlarge, i2.xlarge, i2.2xlarge, i2.4xlarge, i2.8xlarge, r3.large,
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r3.xlarge, r3.2xlarge, r3.4xlarge, or r3.8xlarge. For more information about instance types,
see Amazon EC2 Instances.
• Launch the instance in a VPC. (You can't enabled enhanced networking if the instance is in EC2Classic.)
• Install and configure either the AWS CLI or Amazon EC2 CLI tools to any computer you choose,
preferably your local desktop or laptop. For more information, see Accessing Amazon EC2 (p. 3). If
you choose the Amazon EC2 CLI tools, install version 1.6.12.0 or later. You can use the ec2-version
command to verify the version of your CLI tools.
• If you have important data on the instance that you want to preserve, you should back that data up
now by creating a snapshot. Updating drivers as well as enabling the sriovNetSupport attribute may
make incompatible instances or operating systems unreachable; if you have a recent backup, your
data will still be retained if this happens.
Testing Whether Enhanced Networking Is Enabled
To test whether enhanced networking is already enabled, verify that the driver is installed on your instance
and that the sriovNetSupport attribute is set.
Driver
To verify that the driver is installed, connect to your instance and open Device Manager. You should see
"Intel(R) 82599 Virtual Function" listed under Network adapters.
Instance Attribute (sriovNetSupport)
To check whether an instance has the enhanced networking attribute set, use one of the following commands:
• describe-instance-attribute (AWS CLI)
C:\> aws ec2 describe-instance-attribute --instance-id instance_id --attribute
sriovNetSupport
If the enhanced networking attribute isn't set, SriovNetSupport is empty. Otherwise, it is set as follows:
"SriovNetSupport": {
"Value": "simple"
},
• ec2-describe-instance-attribute (Amazon EC2 CLI)
C:\> ec2-describe-instance-attribute instance_id --sriov
If the enhanced networking attribute isn't set, you'll see no output for this command. Otherwise, the
output is as follows:
sriovNetSupport instance_id
simple
Image Attribute (sriovNetSupport)
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To check whether an AMI already has the enhanced networking attribute set, use one of the following
commands:
• describe-image-attribute (AWS CLI)
C:\> aws ec2 describe-image-attribute --image-id ami_id --attribute sriovNet
Support
Note
This command only works for images that you own. You receive an AuthFailure error for
images that do not belong to your account.
If the enhanced networking attribute isn't set, SriovNetSupport is empty. Otherwise, it is set as follows:
"SriovNetSupport": {
"Value": "simple"
},
• ec2-describe-image-attribute (Amazon EC2 CLI)
C:\> ec2-describe-image-attribute ami_id --sriov
Note
This command only works for images that you own. You will receive an AuthFailure error
for images that do not belong to your account.
If the enhanced networking attribute isn't set, you'll see no output for this command. Otherwise, the
output is as follows:
sriovNetSupport ami_id
simple
Enabling Enhanced Networking on Windows
If you launched your instance and it does not have enhanced networking enabled already, use the following
procedure to enable enhanced networking.
To enable enhanced networking
1.
Connect to your instance and log in as the local administrator.
2.
From the instance, install the driver as follows:
a.
b.
Download the Intel driver.
In the Download folder, locate the PROWinx64.exe file. Rename this file PROWinx64.zip.
c.
Right-click PROWinx64.zip and then click Extract All. Specify a destination path and click
Extract.
d.
Open a Command Prompt window, go to the folder with the extracted files, and run the following
command.
Windows Server 2012
C:\> pnputil -a PROXGB\Winx64\NDIS63\vxn63x64.inf
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Windows Server 2008 R2
C:\> pnputil -a PROXGB\Winx64\NDIS62\vxn62x64.inf
3.
4.
From your local computer, stop the instance using the Amazon EC2 console or one of the following
commands: stop-instances (AWS CLI) or ec2-stop-instances (Amazon EC2 CLI).
From a Command Prompt window, enable the enhanced networking attribute using one of the following
commands.
Warning
There is no way to disable the enhanced networking attribute after you've enabled it.
• modify-instance-attribute (AWS CLI)
C:\> aws ec2 modify-instance-attribute --instance-id instance_id --sriovnet-support simple
• ec2-modify-instance-attribute (Amazon EC2 CLI)
C:\> ec2-modify-instance-attribute instance_id --sriov simple
5.
6.
(Optional) Create an AMI from the instance, as described in Creating an Amazon EBS-Backed
Windows AMI (p. 62). The AMI inherits the enhanced networking attribute from the instance.
Therefore, you can use this AMI to launch another C3, R3, or I2 instance with the enhanced networking
enabled by default.
From your local computer, start the instance using the Amazon EC2 console or one of the following
commands: start-instances (AWS CLI) or ec2-start-instances (Amazon EC2 CLI).
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Storage
Amazon EC2 provides you with flexible, cost effective, and easy-to-use data storage options for your instances. Each option has a unique combination of performance and durability. These storage options
can be used independently or in combination to suit your requirements.
After reading this section, you should have a good understanding about how you can use the data storage
options supported by Amazon Elastic Compute Cloud to meet your specific requirements. These storage
options include the following:
• Amazon Elastic Block Store (Amazon EBS) (p. 355)
• Amazon EC2 Instance Store (p. 407)
• Amazon Simple Storage Service (Amazon S3) (p. 413)
The following figure shows the relationship between these types of storage.
Amazon EBS
Amazon EBS provides durable, block-level storage volumes that you can attach to a running Amazon
EC2 instance. You can use Amazon EBS as a primary storage device for data that requires frequent and
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granular updates. For example, Amazon EBS is the recommended storage option when you run a database
on an instance.
An Amazon EBS volume behaves like a raw, unformatted, external block device that you can attach to
a single instance. The volume persists independently from the running life of an Amazon EC2 instance.
After an EBS volume is attached to an instance, you can use it like any other physical hard drive. As illustrated in the previous figure, multiple volumes can be attached to an instance. You can also detach an
EBS volume from one instance and attach it to another instance. Amazon EBS volumes can also be
created as encrypted volumes using the Amazon EBS encryption feature. For more information, see
Amazon EBS Encryption (p. 391).
To keep a backup copy of your data, you can create a snapshot of an EBS volume, which is stored in
Amazon S3.You can create a new Amazon EBS volume from a snapshot, and attach it to another instance.
For more information, see Amazon Elastic Block Store (Amazon EBS) (p. 355).
Amazon EC2 Instance Store
Many Amazon EC2 instances can access storage from disks that are physically attached to the host
computer. This disk storage is referred to as instance store. Instance store provides temporary blocklevel storage for Amazon EC2 instances. The data on an instance store volume persists only during the
life of the associated Amazon EC2 instance; if you stop or terminate an instance, any data on instance
store volumes is lost. For more information, see Amazon EC2 Instance Store (p. 407).
Amazon S3
Amazon S3 is a repository for Internet data. Amazon S3 provides access to reliable and inexpensive data
storage infrastructure. It is designed to make web-scale computing easier by enabling you to store and
retrieve any amount of data, at any time, from within Amazon EC2 or anywhere on the web. For example,
you can use Amazon S3 to store backup copies of your data and applications. For more information, see
Amazon Simple Storage Service (Amazon S3) (p. 413).
Adding Storage
Every time you launch an instance from an AMI, a root storage device is created for that instance. The
root storage device contains all the information necessary to boot the instance. You can specify storage
volumes in addition to the root device volume when you create an AMI or launch an instance using block
device mapping. For more information, see Block Device Mapping (p. 415).
You can also attach EBS volumes to a running instance. For more information, see Attaching an Amazon
EBS Volume to an Instance (p. 365).
Amazon Elastic Block Store (Amazon EBS)
Amazon Elastic Block Store (Amazon EBS) provides block level storage volumes for use with Amazon
EC2 instances. Amazon EBS volumes are highly available and reliable storage volumes that can be attached to any running instance that is in the same Availability Zone. Amazon EBS volumes that are attached
to an Amazon EC2 instance are exposed as storage volumes that persist independently from the life of
the instance. With Amazon EBS, you pay only for what you use. For more information about Amazon
EBS pricing, see the Projecting Costs section of the Amazon Elastic Block Store page.
Amazon EBS is recommended when data changes frequently and requires long-term persistence. Amazon
EBS volumes are particularly well-suited for use as the primary storage for file systems, databases, or
for any applications that require fine granular updates and access to raw, unformatted, block-level storage.
Amazon EBS is particularly helpful for database-style applications that frequently encounter many random
reads and writes across the data set.
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Features of Amazon EBS
For simplified data encryption, you can launch your Amazon EBS volumes as encrypted volumes. Amazon
EBS encryption offers you a simple encryption solution for your EBS volumes without the need for you
to build, manage, and secure your own key management infrastructure. When you create an encrypted
EBS volume and attach it to a supported instance type, data stored at rest on the volume, disk I/O, and
snapshots created from the volume are all encrypted. The encryption occurs on the servers that hosts
EC2 instances, providing encryption of data-in-transit from EC2 instances to EBS storage. For more information, see Amazon EBS Encryption (p. 391).
You can attach multiple volumes to the same instance within the limits specified by your AWS account.
Your account has a limit on the number of Amazon EBS volumes that you can use, and the total storage
available to you. For more information about these limits, and how to request an increase in your limits,
see Request to Increase the Amazon EBS Volume Limit.
Contents
• Features of Amazon EBS (p. 356)
• Amazon EBS Volumes (p. 357)
• Amazon EBS Snapshots (p. 385)
• Amazon EBS Encryption (p. 391)
• Amazon EBS Volume Performance (p. 393)
• Amazon EBS API and Command Overview (p. 405)
Features of Amazon EBS
• You can create Amazon EBS storage volumes from 1 GiB to 1 TiB in size and mount them as devices
on your Amazon EC2 instances. You can mount multiple volumes on the same instance, but each
volume can be attached to only one instance at a time. For more information, see Creating an Amazon
EBS Volume (p. 361).
• With General Purpose (SSD) volumes, your volume receives a base performance of 3 IOPS/GiB, with
the ability to burst to 3,000 IOPS for extended periods of time. General Purpose (SSD) volumes are
ideal for a broad range of use cases such as boot volumes, small and medium size databases, and
development and test environments. For more information, see General Purpose (SSD) Volumes (p. 359).
• With Provisioned IOPS (SSD) volumes, you can provision a specific level of I/O performance, up to
4000 IOPS per volume. This allows you to predictably scale to thousands of IOPS per EC2 instance.
For more information, see Provisioned IOPS (SSD) Volumes (p. 361).
• Amazon EBS volumes behave like raw, unformatted block devices. You can create a file system on
top of these volumes, or use them in any other way you would use a block device (like a hard drive).
For more information on creating file systems and mounting volumes, see Making an Amazon EBS
Volume Available for Use (p. 367).
• You can use encrypted Amazon EBS volumes to meet a wide range of data-at-rest encryption requirements for regulated/audited data and applications. For more information, see Amazon EBS Encryption (p. 391).
• You can create point-in-time snapshots of Amazon EBS volumes, which are persisted to Amazon S3.
Snapshots protect data for long-term durability, and they can be used as the starting point for new
Amazon EBS volumes. The same snapshot can be used to instantiate as many volumes as you wish.
These snapshots can be copied across AWS regions. For more information, see Amazon EBS Snapshots (p. 385).
• Amazon EBS volumes are created in a specific Availability Zone, and can then be attached to any instances in that same Availability Zone. To make a volume available outside of the Availability Zone,
you can create a snapshot and restore that snapshot to a new volume anywhere in that region. You
can copy snapshots to other regions and then restore them to new volumes there, making it easier to
leverage multiple AWS regions for geographical expansion, data center migration, and disaster recovery.
For more information, see Creating an Amazon EBS Snapshot (p. 386), Restoring an Amazon EBS
Volume from a Snapshot (p. 363), and Copying an Amazon EBS Snapshot (p. 388).
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• A large repository of public data set snapshots can be restored to Amazon EBS volumes and seamlessly
integrated into AWS cloud-based applications. For more information, see Using Public Data Sets (p. 425).
• Performance metrics, such as bandwidth, throughput, latency, and average queue length, are available
through the AWS Management Console. These metrics, provided by Amazon CloudWatch, allow you
to monitor the performance of your volumes to make sure that you are providing enough performance
for your applications without paying for resources you don't need. For more information, see Amazon
EBS Volume Performance (p. 393).
Amazon EBS Volumes
An Amazon EBS volume is a durable, block-level storage device that you can attach to a single EC2 instance. You can use Amazon EBS volumes as primary storage for data that requires frequent updates,
such as the system drive for an instance or storage for a database application. Amazon EBS volumes
persist independently from the running life of an EC2 instance. After a volume is attached to an instance,
you can use it like any other physical hard drive. Amazon EBS provides the following volume types:
General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic. They differ in performance characteristics and price, allowing you to tailor your storage performance and cost to the needs of your applications.
For more information, see Amazon EBS Volume Types (p. 359).
Contents
• Benefits of Using Amazon EBS Volumes (p. 357)
• Amazon EBS Volume Types (p. 359)
• Creating an Amazon EBS Volume (p. 361)
• Restoring an Amazon EBS Volume from a Snapshot (p. 363)
• Attaching an Amazon EBS Volume to an Instance (p. 365)
• Making an Amazon EBS Volume Available for Use (p. 367)
• Viewing Volume Information (p. 369)
• Monitoring the Status of Your Volumes (p. 369)
• Detaching an Amazon EBS Volume from an Instance (p. 379)
• Deleting an Amazon EBS Volume (p. 380)
• Expanding the Storage Space of a Volume (p. 380)
Benefits of Using Amazon EBS Volumes
Data Availability
When you create an Amazon EBS volume in an Availability Zone, it is automatically replicated within that
zone to prevent data loss due to failure of any single hardware component. After you create a volume,
you can attach it to any Amazon EC2 instance in the same Availability Zone. After you attach a volume,
it appears as a native block device similar to a hard drive or other physical device. At that point, the instance
can interact with the volume just as it would with a local drive; the instance can format the Amazon EBS
volume with a file system, such as NTFS, and then install applications.
An Amazon EBS volume can be attached to only one instance at a time within the same Availability Zone.
However, multiple volumes can be attached to a single instance. If you attach multiple volumes to a device
that you have named, you can stripe data across the volumes for increased I/O and throughput performance.
You can get monitoring data for your Amazon EBS volumes at no additional charge (this includes data
for the root device volumes for Amazon EBS-backed instances). For more information, see Monitoring
Volumes with CloudWatch (p. 369).
Data Persistence
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An Amazon EBS volume is off-instance storage that can persist independently from the life of an instance.
You continue to pay for the volume usage as long as the data persists.
By default, Amazon EBS volumes that are attached to a running instance automatically detach from the
instance with their data intact when that instance is terminated. The volume can then be reattached to a
new instance, enabling quick recovery. If you are using an Amazon EBS-backed instance, you can stop
and restart that instance without affecting the data stored in the attached volume. The volume remains
attached throughout the stop-start cycle. This enables you to process and store the data on your volume
indefinitely, only using the processing and storage resources when required. The data persists on the
volume until the volume is deleted explicitly. After a volume is deleted, it can't be attached to any instance.
The physical block storage used by deleted Amazon EBS volumes is overwritten with zeroes before it is
allocated to another account. If you are dealing with sensitive data, you should consider encrypting your
data manually or storing the data on a volume that is enabled with Amazon EBS encryption. For more
information, see Amazon EBS Encryption (p. 391).
By default, Amazon EBS volumes that are created and attached to an instance at launch are deleted
when that instance is terminated.You can modify this behavior by changing the value of the flag DeleteOnTermination to false when you launch the instance. This modified value causes the volume to
persist even after the instance is terminated, and enables you to attach the volume to another instance.
Data Encryption
For simplified data encryption, you can create encrypted Amazon EBS volumes with the Amazon EBS
encryption feature. You can use encrypted Amazon EBS volumes to meet a wide range of data-at-rest
encryption requirements for regulated/audited data and applications. Amazon EBS encryption uses 256bit Advanced Encryption Standard algorithms (AES-256) and an Amazon-managed key infrastructure.
The encryption occurs on the server that hosts the Amazon EC2 instance, providing encryption of datain-transit from the EC2 instance to EBS storage. For more information, see Amazon EBS Encryption (p. 391).
Snapshots
Amazon EBS provides the ability to create snapshots (backups) of any Amazon EC2 volume and write
a copy of the data in the volume to Amazon S3, where it is stored redundantly in multiple Availability
Zones. The volume does not need be attached to a running instance in order to take a snapshot. As you
continue to write data to a volume, you can periodically create a snapshot of the volume to use as a
baseline for new volumes. These snapshots can be used to create multiple new Amazon EBS volumes,
expand the size of a volume, or move volumes across Availability Zones. Snapshots of encrypted Amazon
EBS volumes are automatically encrypted.
When you create a new volume from a snapshot, it's an exact copy of the original volume at the time the
snapshot was taken. Amazon EBS volumes that are restored from encrypted snapshots are automatically
encrypted. By optionally specifying a different volume size or a different Availability Zone, you can use
this functionality to increase the size of an existing volume or to create duplicate volumes in new Availability Zones. The snapshots can be shared with specific AWS accounts or made public. When you create
snapshots, you incur charges in Amazon S3 based on the volume's total size. For a successive snapshot
of the volume, you are only charged for any additional data beyond the volume's original size.
Amazon EBS snapshots are incremental backups, meaning that only the blocks on the volume that have
changed after your most recent snapshot are saved. If you have a volume with 100 GiB of data, but only
5 GiB of data have changed since your last snapshot, only the 5 GiB of modified data is written to Amazon
S3. Even though snapshots are saved incrementally, the snapshot deletion process is designed so that
you need to retain only the most recent snapshot in order to restore the volume.
To help categorize and manage your volumes and snapshots, you can tag them with metadata of your
choice. For more information, see Tagging Your Amazon EC2 Resources (p. 433).
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Amazon EBS Volume Types
Amazon EBS provides the following volume types, which differ in performance characteristics and price,
so that you can tailor your storage performance and cost to the needs of your applications:
• General Purpose (SSD) Volumes (p. 359)
• Provisioned IOPS (SSD) Volumes (p. 361)
• Magnetic Volumes (p. 361)
The following table describes basic use cases and performance characteristics for each volume type.
Characteristic
General Purpose (SSD) Provisioned IOPS
(SSD)
Magnetic
Use cases
• System boot volumes • Critical business
applications that
• Virtual desktops
require sustained
• Small to medium
IOPS performance
sized databases
above 3,000 IOPS
• Development and test
• Large database
environments
workloads, such as:
• MongoDB
• Microsoft SQL
Server
• MySQL
• PostgreSQL
• Oracle
• Cold workloads where
data is infrequently
accessed
• Scenarios where the
lowest storage cost is
important
Volume size
1 GiB - 1 TiB
10 GiB - 1 TiB
1 GiB - 1 TiB
IOPS performance
Has the ability to burst
to 3,000 IOPS
maximum, with a base
performance of 3
IOPS/GiB
Consistently performs at Averages 100 IOPS,
provisioned level, with
with the ability to burst
4,000 IOPS maximum
to hundreds of IOPS
API and CLI volume
name
gp2
io1
standard
There are several factors that can affect the performance of Amazon EBS volumes, such as instance
configuration, I/O characteristics, and workload demand. For more information about getting the most
out of your Amazon EBS volumes, see Amazon EBS Volume Performance (p. 393).
For detailed pricing information about these volume types, see Amazon EBS Pricing.
General Purpose (SSD) Volumes
General Purpose (SSD) volumes offer cost-effective storage that is ideal for a broad range of workloads.
These volumes deliver single-digit millisecond latencies, the ability to burst to 3,000 IOPS for extended
periods of time, and a base performance of 3 IOPS/GiB. General Purpose (SSD) volumes can range in
size from 1 GiB to 1 TiB.
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Note
Some AWS accounts created before 2012 might have access to Availability Zones in us-east1, us-west-1, or ap-northeast-1 that do not support SSD volumes such as Provisioned IOPS
(SSD) and General Purpose (SSD). If you are unable to create an SSD volume (or launch an
instance with an SSD volume in its block device mapping) in one of these regions, try a different
Availability Zone in the region.You can verify that an Availability Zone supports General Purpose
(SSD) and Provisioned IOPS (SSD) volumes by creating a 1 GiB General Purpose (SSD) volume
in that zone.
IO Credits and Burst Performance
General Purpose (SSD) volume performance is governed by volume size, which dictates the base performance level of the volume and how quickly it accumulates I/O credits; larger volumes have higher
base performance levels and accumulate I/O credits faster. I/O credits represent the available bandwidth
that your General Purpose (SSD) volume can use to burst large amounts of I/O when more than the base
performance is needed. The more credits your volume has for I/O, the more time it can burst beyond its
base performance level and the better it performs when more performance is needed.
Each volume receives an initial I/O credit balance of 5,400,000 I/O credits, which is enough to sustain
the maximum burst performance of 3,000 IOPS for 30 minutes. This initial credit balance is designed to
provide a fast initial boot cycle for boot volumes and to provide a good bootstrapping experience for other
applications. Volumes earn I/O credits every second at a base performance rate of 3 IOPS per GiB of
volume size. For example, a 100 GiB General Purpose (SSD) volume has a base performance of 300
IOPS.
When your volume requires more than the base performance I/O level, it simply uses I/O credits in the
credit balance to burst to the required performance level, up to a maximum of 3,000 IOPS. Volumes larger
than 1,000 GiB have a base performance that is equal or greater than the maximum burst performance,
so their I/O credit balance never depletes and they can burst indefinitely. When your volume uses fewer
I/O credits than it earns in a second, unused I/O credits are added to the I/O credit balance. The maximum
I/O credit balance for a volume is equal to the initial credit balance (5,400,000 I/O credits).
If your volume uses all of its I/O credit balance, the maximum performance of the volume will remain at
the base performance level (the rate at which your volume earns credits) until I/O demand drops below
the base level and unused credits are added to the I/O credit balance. The larger a volume is, the greater
the base performance is and the faster it replenishes the credit balance.
The table below lists several volume sizes and the associated base performance of the volume (which
is also the rate at which it accumulates I/O credits), the burst duration at the 3,000 IOPS maximum (when
starting with a full credit balance), and the time in seconds that the volume would take to refill an empty
credit balance.
Volume size (GiB)
Base performance
(IOPS)
Maximum burst
Seconds to fill empty
duration @ 3,000 IOPS credit balance
(seconds)
1
3
1,802
1,800,000
100
300
2,000
18,000
250
750
2,400
7,200
500
1,500
3,600
3,600
750
2,250
7,200
2,400
1,000
3,000
Infinite
N/A
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The burst duration of a volume is dependent on the size of the volume, the burst IOPS required, and the
credit balance when the burst begins. This is shown in the equation below:
Burst duration
=
(Credit balance)
-----------------------------------(Burst IOPS) - 3(Volume size in GiB)
If you notice that your volume performance is frequently limited to the base level (due to and empty I/O
credit balance), you should consider using a larger General Purpose (SSD) volume (with a higher base
performance level) or switching to a Provisioned IOPS (SSD) volume for workloads that require sustained
IOPS performance greater than 3,000 IOPS.
Provisioned IOPS (SSD) Volumes
Provisioned IOPS (SSD) volumes are designed to meet the needs of I/O-intensive workloads, particularly
database workloads, that are sensitive to storage performance and consistency in random access I/O
throughput. You specify an IOPS rate when you create the volume, and Amazon EBS delivers within 10
percent of the provisioned IOPS performance 99.9 percent of the time over a given year.
Note
Some AWS accounts created before 2012 might have access to Availability Zones in us-east1, us-west-1, or ap-northeast-1 that do not support SSD volumes such as Provisioned IOPS
(SSD) and General Purpose (SSD). If you are unable to create an SSD volume (or launch an
instance with an SSD volume in its block device mapping) in one of these regions, try a different
Availability Zone in the region.You can verify that an Availability Zone supports General Purpose
(SSD) and Provisioned IOPS (SSD) volumes by creating a 1 GiB General Purpose (SSD) volume
in that zone.
A Provisioned IOPS (SSD) volume can range in size from 10 GiB to 1 TiB and you can provision up to
4,000 IOPS per volume. The ratio of IOPS provisioned to the volume size requested can be a maximum
of 30; for example, a volume with 3,000 IOPS must be at least 100 GiB. You can stripe multiple volumes
together in a RAID configuration for larger size and greater performance.
Magnetic Volumes
Magnetic volumes provide the lowest cost per gigabyte of all Amazon EBS volume types. Magnetic
volumes are backed by magnetic drives and are ideal for workloads performing sequential reads, workloads
where data is accessed infrequently, and scenarios where the lowest storage cost is important. These
volumes deliver approximately 100 IOPS on average, with burst capability of up to hundreds of IOPS,
and they can range in size from 1 GiB to 1 TiB. Magnetic volumes can be striped together in a RAID
configuration for larger size and greater performance.
If you need a greater number of IOPS or higher performance than Magnetic volume can provide, we recommend that you consider General Purpose (SSD) or Provisioned IOPS (SSD) volumes.
Creating an Amazon EBS Volume
You can create a new Amazon EBS volume that you can then attach to any Amazon EC2 instance within
the same Availability Zone. You can choose to create an encrypted Amazon EBS volume, but encrypted
volumes can only be attached to selected instance types. For more information, see Supported Instance
Types (p. 391).
You can also create and attach Amazon EBS volumes when you launch instances by specifying a block
device mapping. For more information, see Launching an Instance (p. 131) and Block Device Mapping (p. 415). You can restore volumes from previously created snapshots. For more information, see
Restoring an Amazon EBS Volume from a Snapshot (p. 363).
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If you are creating a volume for a high-performance storage scenario, you should make sure to use a
Provisioned IOPS (SSD) volume and attach it to an instance with enough bandwidth to support your application, such as an EBS-optimized instance or an instance with 10 Gigabit network connectivity. For
more information, see Amazon EC2 Instance Configuration (p. 394).
When a block of data on a newly created Amazon EBS volume is written to for the first time, you might
experience longer than normal latency.To avoid the possibility of an increased write latency on a production
workload, you should first write to all blocks on the volume to ensure optimal performance; this practice
is called pre-warming the volume. For more information, see Pre-Warming Amazon EBS Volumes (p. 396).
To create a new Amazon EBS volume using the console
1.
Open the Amazon EC2 console.
2.
From the navigation bar, select the region in which you would like to create your volume. This choice
is important because some Amazon EC2 resources can be shared between regions, while others
can't. For more information, see Resource Locations (p. 428).
3.
4.
Click Volumes in the navigation pane.
Above the upper pane, click Create Volume.
5.
In the Create Volume dialog box, in the Volume Type list, select General Purpose (SSD), Provisioned IOPS (SSD) or Magnetic. For more information, see Amazon EBS Volume Types (p. 359).
Note
Some AWS accounts created before 2012 might have access to Availability Zones in useast-1, us-west-1, or ap-northeast-1 that do not support SSD volumes such as Provisioned
IOPS (SSD) and General Purpose (SSD). If you are unable to create an SSD volume (or
launch an instance with an SSD volume in its block device mapping) in one of these regions,
try a different Availability Zone in the region.You can verify that an Availability Zone supports
General Purpose (SSD) and Provisioned IOPS (SSD) volumes by creating a 1 GiB General
Purpose (SSD) volume in that zone.
6.
7.
8.
9.
In the Size box, enter the size of the volume, in GiB.
For Provisioned IOPS (SSD) volumes, in the IOPS box, enter the maximum number of input/output
operations per second (IOPS) that the volume should support.
In the Availability Zone list, select the Availability Zone in which to create the volume.
(Optional) To create an encrypted volume, select the Encrypted box.
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Note
Encrypted volumes can only be attached to selected instance types. For more information,
see Supported Instance Types (p. 391).
10. Click Yes, Create.
To create a new Amazon EBS volume using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-volume (AWS CLI)
• ec2-create-volume (Amazon EC2 CLI)
• New-EC2Volume (AWS Tools for Windows PowerShell)
Restoring an Amazon EBS Volume from a Snapshot
You can restore an Amazon EBS volume with data from a snapshot stored in Amazon S3. You need to
know the ID of the snapshot you wish to restore your volume from and you need to have access permissions for the snapshot. For more information on snapshots, see Amazon EBS Snapshots (p. 385).
New volumes created from existing Amazon S3 snapshots load lazily in the background. This means that
after a volume is created from a snapshot, there is no need to wait for all of the data to transfer from
Amazon S3 to your Amazon EBS volume before your attached instance can start accessing the volume
and all its data. If your instance accesses data that hasn't yet been loaded, the volume immediately
downloads the requested data from Amazon S3, and continues loading the rest of the data in the background.
Amazon EBS volumes that are restored from encrypted snapshots are automatically encrypted. Encrypted
volumes can only be attached to selected instance types. For more information, see Supported Instance
Types (p. 391).
When a block of data on a newly restored Amazon EBS volume is accessed for the first time, you might
experience longer than normal latency. To avoid the possibility of increased read or write latency on a
production workload, you should first access all of the blocks on the volume to ensure optimal performance;
this practice is called pre-warming the volume. For more information, see Pre-Warming Amazon EBS
Volumes (p. 396).
To restore an Amazon EBS volume from a snapshot using the console
You can restore your Amazon EBS volume from a snapshot using the AWS Management Console as
follows.
1.
Open the Amazon EC2 console.
2.
From the navigation bar, select the region that your snapshot is located in. This choice is important
because some Amazon EC2 resources can be shared between regions, while others can't. For more
information, see Resource Locations (p. 428). If you need to restore the snapshot to a volume in a
different region, you can copy your snapshot to the new region and then restore it to a volume in that
region. For more information, see Copying an Amazon EBS Snapshot (p. 388).
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3.
4.
5.
Click Volumes in the navigation pane.
Click Create Volume.
In the Create Volume dialog box, in the Volume Type list, select General Purpose (SSD), Provisioned IOPS (SSD) or Magnetic. For more information, see Amazon EBS Volume Types (p. 359).
Note
Some AWS accounts created before 2012 might have access to Availability Zones in useast-1, us-west-1, or ap-northeast-1 that do not support SSD volumes such as Provisioned
IOPS (SSD) and General Purpose (SSD). If you are unable to create an SSD volume (or
launch an instance with an SSD volume in its block device mapping) in one of these regions,
try a different Availability Zone in the region.You can verify that an Availability Zone supports
General Purpose (SSD) and Provisioned IOPS (SSD) volumes by creating a 1 GiB General
Purpose (SSD) volume in that zone.
6.
In the Snapshot field, start typing the ID or description of the snapshot from which you are restoring
the volume, and select it from the list of suggested options.
Note
Volumes that are restored from encrypted snapshots can only be attached to instances that
support Amazon EBS encryption. For more information, see Supported Instance
Types (p. 391).
7.
In the Size box, enter the size of the volume in GiB, or verify the that the default size of the snapshot
is adequate.
Note
If you specify both a volume size and a snapshot ID, the size must be equal to or greater
than the snapshot size. When you select a volume type and a snapshot ID, minimum and
maximum sizes for the volume are shown next to the Size list. Any AWS Marketplace product
codes from the snapshot are propagated to the volume.
8.
For Provisioned IOPS (SSD) volumes, in the IOPS box, enter the maximum number of input/output
operations per second (IOPS) that the volume can support.
9. In the Availability Zone list, select the Availability Zone in which to create the volume.
10. Click Yes, Create.
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Important
If you restored a snapshot to a larger volume than the default for that snapshot, you need
to extend the file system on the volume to take advantage of the extra space. For more information, see Expanding the Storage Space of a Volume (p. 380).
To restore a new Amazon EBS volume using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-volume (AWS CLI)
• ec2-create-volume (Amazon EC2 CLI)
• New-EC2Volume (AWS Tools for Windows PowerShell)
Attaching an Amazon EBS Volume to an Instance
You can attach your Amazon EBS volume to one of your instances in the same Availability Zone.
To attach an Amazon EBS volume to an instance using the console
1.
2.
3.
4.
5.
6.
Open the Amazon EC2 console.
Click Volumes in the navigation pane.
Select a volume and then click Attach Volume.
In the Attach Volume dialog box, start typing the name or ID of the instance to attach the volume
to in the Instance box, and select it from the list of suggestion options (only instances in the same
Availability Zone as the volume are displayed). Encrypted volumes can only be attached to instances
that support Amazon EBS encryption. For more information, see Supported Instance Types (p. 391).
Verify that the suggested device name is suitable, or enter a device name in the Device box. For
more information about naming conventions and restrictions, see Device Naming (p. 366).
Click Attach to attach the volume to the instance. The volume and instance must be in the same
Availability Zone.
If a volume has an AWS Marketplace product code:
• The volume can only be attached to the root device of a stopped instance.
• You must be subscribed to the AWS Marketplace code that is on the volume.
• The configuration (instance type, operating system) of the instance must support that specific AWS
Marketplace code. For example, you cannot take a volume from a Windows instance and attach it to
a Linux instance.
• AWS Marketplace product codes are copied from the volume to the instance.
To attach an Amazon EBS volume to an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• attach-volume (AWS CLI)
• ec2-attach-volume (Amazon EC2 CLI)
• Add-EC2Volume (AWS Tools for Windows PowerShell)
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Device Naming
The following table lists the available device names on Amazon EC2. You can specify these names when
attaching a volume to a running instance or when launching an instance using a block device mapping.
The block device driver for the instance assigns the actual volume names when mounting the volumes,
and these names can be different than the names that Amazon EC2 recommends. For more information
about instance store volumes, see Amazon EC2 Instance Store (p. 407). For information about the root
device storage, see Root Device Volume (p. 8).
Xen Driver Type
Available
AWS PV, Citrix PV xvd[a-z]
Reserved for
Root
Used for Instance Recommended
Store Volumes
for EBS Volumes
/dev/sda1
xvd[a-e]
xvd[b-c][a-z]
xvd[f-z]
xvdc[a-x]
(hs1.8xlarge)
/dev/sda1
/dev/sd[b-e]
Red Hat PV
xvd[a-z]
/dev/sda1
xvd[b-c][a-z]
xvd[a-e]
xvd[f-p]
xvdc[a-x]
(hs1.8xlarge)
/dev/sda1
/dev/sd[b-e]
Warning
Although you can attach your Amazon EBS volumes using the device names used to attach instance store volumes, we strongly recommend that you don't because the behavior can be unpredictable.
Amazon EC2 Windows AMIs come with an additional service installed, the Ec2Config Service. The
Ec2Config service runs as a local system and performs various functions to prepare an instance when it
first boots up. After the devices have been mapped with the drives, the Ec2Config service then initializes
and mounts the drives. The root drive is initialized and mounted as c:\. The instance store volumes that
come attached to the instance are initialized and mounted as d:\, e:\, and so on. By default, when an
Amazon EBS volume is attached to a Windows instance, it can show up as any drive letter on the instance.
You can change the settings of the Ec2Config service to set the drive letters of the Amazon EBS volumes
per your specifications. For more information, see Configuring a Windows Instance Using the EC2Config
Service (p. 153).
Volume Limits
Although Amazon EC2 does not impose limitations on how many volumes you can attach to an instance,
there are several factors you need to consider when attaching multiple volumes. The upper limit of volumes
you should attach to your instance is dependent on your operating system (Linux instances can reliably
handle more volumes than Windows instances). Another consideration is whether you need increased
I/O bandwidth or increased storage capacity.
Windows-specific Volume Limits
Windows instances use Red Hat PV, Citrix PV, or AWS PV drivers for storage I/O, and each driver type
has its own upper limit for volume attachment. If your Windows instance is using AWS PV or Citrix PV
drivers, you can attach up to a total of 25 Amazon EBS volumes using the Amazon EC2 CLI; Windows
instances with Red Hat PV drivers are limited to 16 volumes. To determine which PV drivers your instance
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is using, or to upgrade your Windows instance from Red Hat to Citrix PV drivers, see Upgrading PV
Drivers on Your Windows AMI (p. 169).
Although it is technically possible to attach more than 25 volumes to a Windows instance with AWS PV
or Citrix PV drivers, this is likely to cause performance issues and is not recommended.
Bandwidth vs Capacity
For consistent and predictable bandwidth use cases, use EBS-optimized or 10 Gigabit network connectivity
instances and General Purpose (SSD) or Provisioned IOPS (SSD) volumes. Follow the guidance in the
Amazon EC2 Instance Configuration (p. 394) topic to match the IOPS you have provisioned for your
volumes to the bandwidth available from your instances for maximum performance. For RAID configurations, many administrators find that arrays larger than 8 volumes have diminished performance returns
due to increased I/O overhead; test your individual application performance and tune it as required.
For increased capacity use cases, you can attach many more volumes, but attaching more than 40
volumes (this quantity is only possible on Linux instances; see Windows-specific Volume Limits (p. 366)
for Windows instances) might result in boot failures. If you experience boot problems on an instance with
many volumes attached, you can stop the instance, detach the non-essential boot volumes, and then
reattach them after the instance is running.
Making an Amazon EBS Volume Available for Use
After you attach an Amazon EBS volume to your instance, it is exposed as a block device.You can format
the volume with any file system and then mount it. After you make the Amazon EBS volume available for
use, you can access it in the same ways that you access any other volume. Any data written to this file
system is written to the Amazon EBS volume and is transparent to applications using the device.
Note that you can take snapshots of your Amazon EBS volume for backup purposes or to use as a
baseline when you create another volume. For more information, see Amazon EBS Snapshots (p. 385).
Make the Volume Available on Windows
To use an Amazon EBS volume
1.
2.
Log in to your instance using Remote Desktop.
[Windows Server 2012] Go to the Start screen.
[Windows Server 2008] On the taskbar, click Start, and then click Run.
3.
Type diskmgmt.msc and press Enter. The Disk Management utility opens.
Caution
If you're mounting a volume that already has data on it (for example, a public data set),
make sure you don't reformat the volume and delete the existing data.
4.
Select the disk that represents the new Amazon EBS volume.
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5.
On the Disk Management menu, select Action - All Tasks - Online.
6.
A new disk needs to be initialized before it can be used. To initialize the disk:
a.
In the Disk Management utility, select the new Amazon EBS volume disk.
b.
c.
On the Disk Management menu, select Action - All Tasks - Initialize Disk.
In the Initialize Disk dialog, select the disk to initialize, select the desired partition style, and
press OK.
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Viewing Volume Information
You can view descriptive information for all of your volumes in a selected region at a time in the AWS
Management Console. You can also view detailed information about a single volume, including the size,
volume type, whether or not the volume is encrypted, and the specific instance to which the volume is
attached.
To view information about an Amazon EBS volume using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Volumes in the navigation pane.
To view more information about a volume, select it.
To view information about an Amazon EBS volume using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-volumes (AWS CLI)
• ec2-describe-volumes (Amazon EC2 CLI)
• Get-EC2Volume (AWS Tools for Windows PowerShell)
Monitoring the Status of Your Volumes
Amazon Web Services (AWS) automatically provides data, such as Amazon CloudWatch metrics and
volume status checks, that you can use to monitor your Amazon Elastic Block Store (Amazon EBS)
volumes.
Contents
• Monitoring Volumes with CloudWatch (p. 369)
• Monitoring Volumes with Status Checks (p. 372)
• Monitoring Volume Events (p. 374)
• Working with an Impaired Volume (p. 375)
• Working with the AutoEnableIO Volume Attribute (p. 377)
Monitoring Volumes with CloudWatch
CloudWatch metrics are statistical data that you can use to view, analyze, and set alarms on the operational behavior of your volumes.
The following table describes the types of monitoring data available for your Amazon EBS volumes.
Type
Description
Basic
Data is available automatically in 5-minute periods at no charge. This includes
data for the root device volumes for Amazon EBS-backed instances.
Detailed
Provisioned IOPS (SSD) volumes automatically send one-minute metrics to
CloudWatch.
When you get data from CloudWatch, you can include a Period request parameter to specify the granularity of the returned data.This is different than the period that we use when we collect the data (5-minute
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periods). We recommend that you specify a period in your request that is equal to or larger than the collection period to ensure that the returned data is valid.
You can get the data using either the Amazon CloudWatch API or the Amazon EC2 console. The console
takes the raw data from the Amazon CloudWatch API and displays a series of graphs based on the data.
Depending on your needs, you might prefer to use either the data from the API or the graphs in the console.
Amazon EBS Metrics
You can use the Amazon CloudWatch GetMetricStatistics API to get any of the Amazon EBS
volume metrics listed in the following table. Similar metrics are grouped together in the table, and the
metrics in the first two rows are also available for the local stores on Amazon EC2 instances.
Metric
Description
VolumeReadBytes
The total number of bytes transferred in a specified period of time. Data is
only reported to Amazon CloudWatch when the volume is active. If the volume
is idle, no data is reported to Amazon CloudWatch.
VolumeWriteBytes
Units: Bytes
VolumeReadOps
VolumeWriteOps
The total number of I/O operations in a specified period of time.
Note
To calculate the average I/O operations per second (IOPS) for the
period, divide the total operations in the period by the number of
seconds in that period.
Units: Count
VolumeTotalReadTime The total number of seconds spent by all operations that completed in a
specified period of time. If multiple requests are submitted at the same time,
VolumeTotalWriteTime this total could be greater than the length of the period. For example, for a
period of 5 minutes (300 seconds): if 700 operations completed during that
period, and each operation took 1 second, the value would be 700 seconds.
Units: Seconds
VolumeIdleTime
The total number of seconds in a specified period of time when no read or
write operations were submitted.
Units: Seconds
VolumeQueueLength
The number of read and write operation requests waiting to be completed in
a specified period of time.
Units: Count
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Metric
Description
VolumeThroughputPercentage Used with Provisioned IOPS (SSD) volumes only. The percentage of I/O
operations per second (IOPS) delivered of the total IOPS provisioned for an
Amazon EBS volume. Provisioned IOPS (SSD) volumes deliver within 10
percent of the provisioned IOPS performance 99.9 percent of the time over
a given year.
Note
During a write, if there are no other pending I/O requests in a minute,
the metric value will be 100 percent. Also, a volume's I/O
performance may become degraded temporarily due to an action
you have taken (e.g., creating a snapshot of a volume during peak
usage, running the volume on a non-EBS-optimized instance,
accessing data on the volume for the first time).
Units: Percent
VolumeConsumedReadWriteOps Used with Provisioned IOPS (SSD) volumes only. The total amount of read
and write operations (normalized to 256K capacity units) consumed in a
specified period of time.
I/O operations that are smaller than 256K each count as 1 consumed IOPS.
I/O operations that are larger than 256K are counted in 256K capacity units.
For example, a 1024K I/O would count as 4 consumed IOPS.
Units: Count
Graphs in the Amazon EC2 console
After you create a volume, you can go to the Amazon EC2 console and view the volume's monitoring
graphs. They're displayed when you select the volume on the Volumes page in the EC2 console. A
Monitoring tab is displayed next to the volume's Description tab. The following table lists the graphs
that are displayed. The column on the right describes how the raw data metrics from the Amazon
CloudWatch API are used to produce each graph. The period for all the graphs is 5 minutes.
Graph Name
Description Using Raw Metrics
Read Bandwidth (KiB/s)
Sum(VolumeReadBytes) / Period / 1024
Write Bandwidth (KiB/s)
Sum(VolumeWriteBytes) / Period / 1024
Read Throughput (Ops/s)
Sum(VolumeReadOps) / Period
Write Throughput (Ops/s)
Sum(VolumeWriteOps) / Period
Avg Queue Length (ops)
Avg(VolumeQueueLength)
% Time Spent Idle
Sum(VolumeIdleTime) / Period * 100
Avg Read Size (KiB/op)
Avg(VolumeReadBytes) / 1024
Avg Write Size (KiB/op)
Avg(VolumeWriteBytes) / 1024
Avg Read Latency (ms/op)
Avg(VolumeTotalReadTime) * 1000
Avg Write Latency (ms/op)
Avg(VolumeTotalWriteTime) * 1000
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For the average latency graphs and average size graphs, the average is calculated over the total number
of operations (read or write, whichever is applicable to the graph) that completed during the period.
The AWS Management Console contains a console for Amazon CloudWatch. In the Amazon CloudWatch
console you can search and browse all your AWS resource metrics, view graphs to troubleshoot issues
and discover trends, create and edit alarms to be notified of problems, and see at-a-glance overviews of
your alarms and AWS resources. For more information, see AWS Management Console in the Amazon
CloudWatch Developer Guide.
Monitoring Volumes with Status Checks
Volume status checks enable you to better understand, track, and manage potential inconsistencies in
the data on an Amazon EBS volume. They are designed to provide you with the information that you
need to determine whether your Amazon EBS volumes are impaired, and to help you control how a potentially inconsistent volume is handled.
Volume status checks are automated tests that return a pass or fail status. If all checks pass, the status
of the volume is ok. If a check fails, the status of the volume is impaired. If the status is insufficientdata, the checks may still be in progress on the volume.You can view the results of volume status checks
to identify any impaired volumes and take any necessary actions.
When Amazon EBS determines that a volume's data is potentially inconsistent, the default is that it disables
I/O to the volume from any attached EC2 instances, which helps to prevent data corruption. After I/O is
disabled, the next volume status check fails, and the volume status is impaired. In addition, you'll see
an event that lets you know that I/O is disabled, and that you can resolve the impaired status of the volume
by enabling I/O to the volume. We wait until you enable I/O to give you the opportunity to decide whether
to continue to let your instances use the volume, or to run a consistency check using a command, such
as chkdsk, before doing so.
Note
Volume status is based on the volume status checks, and does not reflect the volume state.
Therefore, volume status does not indicate volumes in the error state (for example, when a
volume is incapable of accepting I/O.)
If the consistency of a particular volume is not a concern for you, and you'd prefer that the volume be
made available immediately if it's impaired, you can override the default behavior by configuring the
volume to automatically enable I/O. If you enable the AutoEnableIO volume attribute, the volume status
check continues to pass. In addition, you'll see an event that lets you know that the volume was determined
to be potentially inconsistent, but that its I/O was automatically enabled. This enables you to check the
volume's consistency or replace it at a later time.
The following table lists statuses for Amazon EBS volumes.
Overall Volume Status
I/O Enabled Status
I/O Performance Status
(Provisioned IOPS (SSD)
volumes only)
ok
Enabled (I/O Enabled or I/O
Auto-Enabled)
Normal (Volume performance is
as expected)
warning
Enabled (I/O Enabled or I/O
Auto-Enabled)
Degraded (Volume performance
is below expectations)
Severely Degraded (Volume
performance is well below
expectations)
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Overall Volume Status
I/O Enabled Status
I/O Performance Status
(Provisioned IOPS (SSD)
volumes only)
impaired
Enabled (I/O Enabled or I/O
Auto-Enabled)
Stalled (Volume performance is
severely impacted)
Disabled (Volume is offline and
pending recovery, or is waiting
for the user to enable I/O)
Not Available (Unable to
determine I/O performance
because I/O is disabled)
Enabled (I/O Enabled or I/O
Auto-Enabled)
Insufficient Data
insufficient-data
Insufficient Data
To view and work with status checks, you can use the Amazon EC2 console, the API, or the command
line interface.
To view status checks in the console
1.
2.
3.
4.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Volumes.
On the EBS Volumes page, the Volume Status column lists the operational status of each volume.
To view an individual volume's status, select the volume, and then click the Status Checks tab.
5.
If you have a volume with a failed status check (status is impaired), see Working with an Impaired
Volume (p. 375).
Alternatively, you can use the Events pane to view all events for your instances and volumes in a single
pane. For more information, see Monitoring Volume Events (p. 374).
To view volume status information with the command line
You can use one of the following commands to view the status of your Amazon EBS volumes. For more
information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
• describe-volume-status (AWS CLI)
• ec2-describe-volume-status (Amazon EC2 CLI)
• Get-EC2VolumeStatus (AWS Tools for Windows PowerShell)
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Monitoring Volume Events
When Amazon EBS determines that a volume's data is potentially inconsistent, it disables I/O to the
volume from any attached EC2 instances by default. This causes the volume status check to fail, and
creates a volume status event that indicates the cause of the failure.
To automatically enable I/O on a volume with potential data inconsistencies, change the setting of the
AutoEnableIO volume attribute. For more information about changing this attribute, see Working with
an Impaired Volume (p. 375).
Each event includes a start time that indicates the time at which the event occurred, and a duration that
indicates how long I/O for the volume was disabled. The end time is added to the event when I/O for the
volume is enabled.
Volume status events include one of the following descriptions:
Awaiting Action: Enable IO
Volume data is potentially inconsistent. I/O is disabled for the volume until you explicitly enable it.
The event description changes to IO Enabled after you explicitly enable I/O.
IO Enabled
I/O operations were explicitly enabled for this volume.
IO Auto-Enabled
I/O operations were automatically enabled on this volume after an event occurred. We recommend
that you check for data inconsistencies before continuing to use the data.
Normal
For Provisioned IOPS (SSD) volumes only. Volume performance is as expected.
Degraded
For Provisioned IOPS (SSD) volumes only. Volume performance is below expectations.
Severely Degraded
For Provisioned IOPS (SSD) volumes only. Volume performance is well below expectations.
Stalled
For Provisioned IOPS (SSD) volumes only. Volume performance is severely impacted.
You can view events for your volumes using the Amazon EC2 console, the API, or the command line interface.
To view events for your volumes in the console
1.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2.
3.
In the navigation pane, click Events.
All instances and volumes that have events are listed. You can filter by volume to view only volume
status. You can also filter on specific status types.
Select a volume to view its specific event.
4.
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If you have a volume where I/O is disabled, see Working with an Impaired Volume (p. 375). If you have a
volume where I/O performance is below normal, this might be a temporary condition due to an action you
have taken (e.g., creating a snapshot of a volume during peak usage, running the volume on an instance
that cannot support the I/O bandwidth required, accessing data on the volume for the first time, etc.).
To view events for your volumes with the command line
You can use one of the following commands to view event information for your Amazon EBS volumes.
For more information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
• describe-volume-status (AWS CLI)
• ec2-describe-volume-status (Amazon EC2 CLI)
• Get-EC2VolumeStatus (AWS Tools for Windows PowerShell)
Working with an Impaired Volume
This section discusses your options if a volume is impaired because the volume's data is potentially inconsistent.
Options
• Option 1: Perform a Consistency Check on the Volume Attached to its Instance (p. 375)
• Option 2: Perform a Consistency Check on the Volume Using Another Instance (p. 376)
• Option 3: Delete the Volume If You No Longer Need It (p. 377)
Option 1: Perform a Consistency Check on the Volume Attached to its Instance
The simplest option is to enable I/O and then perform a data consistency check on the volume while the
volume is still attached to its Amazon EC2 instance.
To perform a consistency check on an attached volume
1.
Stop any applications from using the volume.
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2.
3.
Enable I/O on the volume.
a.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
b.
c.
d.
In the navigation pane, click Volumes.
Select the volume on which you want to enable I/O operations.
In the details pane, click Enable Volume IO.
e.
In Enable Volume IO, click Yes, Enable.
Check the data on the volume.
a.
b.
c.
Run the chkdsk command.
(Optional) Review any available application or system logs for relevant error messages.
If the volume has been impaired for more than 20 minutes you can contact support. Click
Troubleshoot, and then on the Troubleshoot Status Checks dialog box, click Contact Support
to submit a support case.
For information about using the command line interface to enable I/O for a volume, see ec2-enablevolume-io in the Amazon EC2 Command Line Reference. For information about using the API to enable
I/O for a volume, see EnableVolumeIO in the Amazon EC2 API Reference.
Option 2: Perform a Consistency Check on the Volume Using Another Instance
Use the following procedure to check the volume outside your production environment.
Important
This procedure may cause the loss of write I/Os that were suspended when volume I/O was
disabled.
To perform a consistency check on a volume in isolation
1.
2.
Stop any applications from using the volume.
Detach the volume from the instance.
a.
b.
c.
d.
3.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Volumes.
Select the volume that you want to detach.
Click Actions, and then click Force Detach Volume. You'll be prompted for confirmation.
Enable I/O on the volume.
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4.
5.
a.
b.
In the navigation pane, click Volumes.
Select the volume that you detached in the previous step.
c.
In the details pane, click Enable Volume IO.
d.
In the Enable Volume IO dialog box, click Yes, Enable.
Attach the volume to another instance. For information, see Launch Your Instance (p. 130) and Attaching an Amazon EBS Volume to an Instance (p. 365).
Check the data on the volume.
a.
b.
c.
Run the chkdsk command.
(Optional) Review any available application or system logs for relevant error messages.
If the volume has been impaired for more than 20 minutes, you can contact support. Click
Troubleshoot, and then in the troubleshooting dialog box, click Contact Support to submit a
support case.
For information about using the command line interface to enable I/O for a volume, see ec2-enablevolume-io in the Amazon EC2 Command Line Reference. For information about using the API to enable
I/O for a volume, see EnableVolumeIO in the Amazon EC2 API Reference.
Option 3: Delete the Volume If You No Longer Need It
If you want to remove the volume from your environment, simply delete it. For information about deleting
a volume, see Deleting an Amazon EBS Volume (p. 380).
If you have a recent snapshot that backs up the data on the volume, you can create a new volume from
the snapshot. For information about creating a volume from a snapshot, see Restoring an Amazon EBS
Volume from a Snapshot (p. 363).
Working with the AutoEnableIO Volume Attribute
When Amazon EBS determines that a volume's data is potentially inconsistent, it disables I/O to the
volume from any attached EC2 instances by default. This causes the volume status check to fail, and
creates a volume status event that indicates the cause of the failure. If the consistency of a particular
volume is not a concern, and you prefer that the volume be made available immediately if it's impaired,
you can override the default behavior by configuring the volume to automatically enable I/O. If you enable
the AutoEnableIO volume attribute, I/O between the volume and the instance is automatically reenabled
and the volume's status check will pass. In addition, you'll see an event that lets you know that the volume
was in a potentially inconsistent state, but that its I/O was automatically enabled. When this event occurs,
you should check the volume's consistency and replace it if necessary. For more information, see Monitoring Volume Events (p. 374).
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This section explains how to view and modify the AutoEnableIO attribute of a volume using the Amazon
EC2 console, the command line interface, or the API.
To view the AutoEnableIO attribute of a volume in the console
1.
2.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Volumes.
3.
4.
Select the volume.
In the lower pane, click the Status Checks tab.
5.
In the Status Checks tab, Auto-Enable IO displays the current setting for your volume, either Enabled or Disabled.
To modify the AutoEnableIO attribute of a volume in the console
1.
2.
3.
4.
5.
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, click Volumes.
Select the volume.
At the top of the Volumes page, click Actions.
Click Change Auto-Enable IO Setting.
6.
In the Change Auto-Enable IO Setting dialog box, select the Auto-Enable Volume IO option to
automatically enable I/O for an impaired volume. To disable the feature, clear the option.
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7.
Click Save.
Alternatively, instead of completing steps 4-6 in the previous procedure, go to the Status Checks tab
and click Edit.
To view or modify the AutoEnableIO attribute of a volume with the command line
You can use one of the following commands to view the AutoEnableIO attribute of your Amazon EBS
volumes. For more information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
• describe-volume-attribute (AWS CLI)
• ec2-describe-volume-attribute (Amazon EC2 CLI)
• Get-EC2VolumeAttribute (AWS Tools for Windows PowerShell)
To modify the AutoEnableIO attribute of a volume, you can use one of the commands below.
• modify-volume-attribute (AWS CLI)
• ec2-modify-volume-attribute (Amazon EC2 CLI)
• Edit-EC2VolumeAttribute (AWS Tools for Windows PowerShell)
Detaching an Amazon EBS Volume from an Instance
You can detach an Amazon EBS volume from an instance explicitly or by terminating the instance.
However, if the instance that the volume is attached to is running, you must unmount the volume (from
the instance) before you detach it. Failure to do so results in the volume being stuck in the busy state
while it is trying to detach, which could possibly damage the file system or the data it contains.
If an Amazon EBS volume is the root device of an instance, you must stop the instance before you can
detach the volume.
When a root volume with an AWS Marketplace product code is detached from an instance, the product
code is no longer associated with the instance.
Important
After you detach a volume, you are still charged for volume storage as long as the storage
amount exceeds the limit of the Free Usage Tier. You must delete a volume to avoid incurring
further charges. For more information, see Deleting an Amazon EBS Volume (p. 380).
This example unmounts the volume and then explicitly detaches it from the instance. This is useful when
you want to terminate an instance or attach a volume to a different instance. To verify that the volume is
no longer attached to the instance, see Viewing Volume Information (p. 369).
Note that you can reattach a volume that you detached (without unmounting it), but it might not get the
same mount point and the data on the volume might be out of sync if there were writes to the volume in
progress when it was detached.
To detach an Amazon EBS volume using the console
1.
2.
First, unmount the volume. Open Disk Management, right-click the volume, and then select Change
Drive Letter and Path. Select the mount point and then click Remove.
Open the Amazon EC2 console.
3.
4.
Click Volumes in the navigation pane.
Select a volume and then click Detach Volume.
5.
In the confirmation dialog box, click Yes, Detach.
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To detach an Amazon EBS volume from an instance using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• detach-volume (AWS CLI)
• ec2-detach-volume (Amazon EC2 CLI)
• Dismount-EC2Volume (AWS Tools for Windows PowerShell)
Troubleshooting
If your volume stays in the detaching state, you can force the detachment by clicking Force Detach.
Forcing the detachment can lead to data loss or a corrupted file system. Use this option only as a last
resort to detach a volume from a failed instance, or if you are detaching a volume with the intention of
deleting it. The instance doesn't get an opportunity to flush file system caches or file system metadata.
If you use this option, you must perform file system check and repair procedures.
If you've tried to force the volume to detach multiple times over several minutes and it stays in the detaching
state, you can post a request for help to the Amazon EC2 forum. To help expedite a resolution, include
the volume ID and describe the steps that you've already taken.
Deleting an Amazon EBS Volume
After you no longer need a volume, you can delete it. After deletion, its data is gone and the volume can't
be attached to any instance. However, before deletion, you can store a snapshot of the volume, which
you can use to recreate the volume later.
To delete a volume using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Volumes in the navigation pane.
Select a volume and click Delete Volume.
In the confirmation dialog box, click Yes, Delete.
To delete an Amazon EBS volume using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• delete-volume (AWS CLI)
• ec2-delete-volume (Amazon EC2 CLI)
• Remove-EC2Volume (AWS Tools for Windows PowerShell)
Expanding the Storage Space of a Volume
Sometimes, it is necessary for you to increase the storage space of an existing volume without losing the
data that is on the volume. This topic explains how to expand the storage space of an Amazon EBS
volume by migrating your data to a larger volume, and then extending the file system on the volume to
recognize the newly-available space. After you verify that your new volume is working properly, you may
delete the old volume.
Topics
• Migrating Your Data to a Larger Volume (p. 381)
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• Extending a Windows File System (p. 382)
• Deleting the Old Volume (p. 385)
Migrating Your Data to a Larger Volume
To migrate your data to a larger Amazon EBS volume
1.
2.
Sign in to the AWS Management Console and open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
Ensure that the instance's Shutdown Behavior value is set to Stop and not Terminate. If it is already
set to Stop, go on to step 3.
a.
b.
In the navigation pane, click Instances, right-click on the instance to check, and select Change
Shutdown Behavior.
If the Shutdown behavior is set to Terminate, select Stop from the list and click Apply.
If the Shutdown behavior is set to Stop, click Cancel.
3.
4.
Stop the instance. For more information about how to stop an instance, see Stopping and Starting
Your Instances (p. 142).
Create a snapshot of the volume to expand.
a.
b.
5.
In the navigation pane, click Volumes, right-click on the volume to be expanded, and select
Create Snapshot.
Enter a Name and Description for the snapshot, and click Yes, Create.
Create a new volume from the snapshot.
a.
b.
In the navigation pane, click Snapshots.
When the status of the snapshot that you just created is set to completed, select the snapshot
and click Create Volume.
Note
It can take several minutes for the snapshot to complete.
c.
6.
In the Create Volume dialog box, select the desired volume type, enter the new size for the
volume, set the Availability Zone to the same Availability Zone as the instance, and click Yes,
Create.
Detach the old volume.
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a.
In the navigation pane, click Volumes, select the old volume from the list of volumes, and make
note of the value of device name in Attachment information. The attachment information
value takes the following form:
instance information:device name
7.
b.
Right-click the old volume and select Detach Volume.
c.
In the Detach Volume dialog box, click Yes, Detach. It may take several minutes for the volume
to be detached.
Attach the newly expanded volume
a.
b.
8.
In the navigation pane, click Volumes, select the new volume from the list of volumes, right-click
the new volume, and select Attach Volume.
Start typing the name or ID of the instance in the Instance field, select the instance, enter the
same device name retrieved in Step 6.a (p. 382), and click Yes, Attach.
Restart the instance.
a.
b.
In the navigation pane, click Instances, right-click the instance, and select Start.
In the Start Instances dialog box, select Yes, Start. If the instance fails to start, and the volume
being expanded is a root volume, verify that you attached the expanded volume using the same
device name as the original volume (root volumes must be attached as /dev/sda1).
Important
Only EC2-VPC instances with Elastic IP addresses retain their public IP address when
they are stopped. If your instance is running in EC2-Classic, the EIP address is disassociated when the instance is stopped, and you must re-associate the EIP after restarting
the instance. For more information, see Elastic IP Addresses (EIP) (p. 333). If your instance is not using an EIP, then you need to retrieve your new public DNS name for
your instance from the Instances page of the Amazon EC2 console to connect to it.
After the instance has started, you can check the file system size to see if your instance recognizes the
larger volume space.
If the size does not reflect your newly-expanded volume, you must extend the file system your device so
that your instance can use the new space. For more information, see Extending a Windows File System (p. 382).
Extending a Windows File System
In Windows, you use the Disk Management utility to extend the disk size to the new size of the volume.
To extend a Windows file system
1.
2.
Log in to your Windows instance using Remote Desktop.
• Windows Server 2012: Go to the Start screen.
• Windows Server 2008: On the taskbar, click Start, and then click Run.
3.
Type diskmgmt.msc and press Enter. The Disk Management utility opens.
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4.
Right-click the expanded drive and select Extend Volume.
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5.
In the Extend Volume Wizard, click Next, then set the Select the amount of space in MB field to
the number of megabytes by which to extend the volume. Normally, you set this to the maximum
available space. Complete the wizard.
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Deleting the Old Volume
After the new volume has been attached and extended in the instance, you can delete the old volume if
it is no longer needed.
To delete the old volume
1.
2.
3.
In the Amazon EC2 console, click Volumes in the navigation pane.
Right-click the old volume and select Delete Volume.
In the Delete Volume dialog box, click Yes, Delete.
Amazon EBS Snapshots
An Amazon EBS snapshot is a point-in-time backup copy of an Amazon EBS volume that is stored in
Amazon S3. Snapshots are incremental backups, which means that only the blocks on the device that
have changed after your most recent snapshot are saved. When you delete a snapshot, only the data
exclusive to that snapshot is removed. Active snapshots contain all of the information needed to restore
your data (from the time the snapshot was taken) to a new Amazon EBS volume.
If you are dealing with snapshots of sensitive data, you should consider encrypting your data manually
before taking the snapshot or storing the data on a volume that is enabled with Amazon EBS encryption.
For more information, see Amazon EBS Encryption (p. 391).
Contents
• Creating an Amazon EBS Snapshot (p. 386)
• Deleting an Amazon EBS Snapshot (p. 387)
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• Copying an Amazon EBS Snapshot (p. 388)
• Viewing Snapshot Information (p. 389)
• Sharing Snapshots (p. 390)
When you create a new Amazon EBS volume, you can create it based on an existing snapshot; the new
volume begins as an exact replica of the original volume that was used to create the snapshot. New
volumes created from existing Amazon S3 snapshots load lazily in the background, so you can begin
using them right away. If your instance accesses a piece of data that hasn't yet been loaded, the volume
immediately downloads the requested data from Amazon S3, and then continues loading the rest of the
volume’s data in the background. For more information about creating snapshots, see Creating an Amazon
EBS Snapshot (p. 386).
Snapshots that are taken from encrypted volumes are automatically encrypted. Volumes that are created
from encrypted snapshots are also automatically encrypted.Your encrypted volumes and any associated
snapshots always remain protected. For more information, see Amazon EBS Encryption (p. 391).
You can share your unencrypted snapshots with specific individuals, or make them public to share them
with the entire AWS community. Users with access to your snapshots can create their own Amazon EBS
volumes from your snapshot, but your snapshots remain completely intact. For more information about
how to share snapshots, see Sharing Snapshots (p. 390). Encrypted snapshots cannot be shared with
anyone, because your volume encryption keys and master key are specific to your account. If you need
to share your encrypted snapshot data, you can migrate the data to an unencrypted volume and share
a snapshot of that volume. For more information, see Migrating Data (p. 392).
Amazon EBS snapshots are constrained to the region in which they are created. Once you have created
a snapshot of an Amazon EBS volume, you can use it to create new volumes in the same region. For
more information, see Restoring an Amazon EBS Volume from a Snapshot (p. 363). You can also copy
snapshots across AWS regions, making it easier to leverage multiple AWS regions for geographical expansion, data center migration and disaster recovery. You can copy any accessible snapshots that are
in the available state. For more information, see Copying an Amazon EBS Snapshot (p. 388).
Creating an Amazon EBS Snapshot
After writing data to an Amazon EBS volume, you can periodically create a snapshot of the volume to
use as a baseline for new volumes or for data backup. If you make periodic snapshots of a volume, the
snapshots are incremental so that only the blocks on the device that have changed after your last snapshot
are saved in the new snapshot. Even though snapshots are saved incrementally, the snapshot deletion
process is designed so that you need to retain only the most recent snapshot in order to restore the
volume.
Snapshots occur asynchronously and the status of the snapshot is pending until the snapshot is complete.
Snapshots that are taken from encrypted volumes are automatically encrypted. Volumes that are created
from encrypted snapshots are also automatically encrypted.Your encrypted volumes and any associated
snapshots always remain protected. For more information, see Amazon EBS Encryption (p. 391).
By default, only you can launch volumes from snapshots that you own. However, you can choose to share
your unencrypted snapshots with specific AWS accounts or make them public. For more information, see
Sharing Snapshots (p. 390). Encrypted snapshots cannot be shared with anyone, because your volume
encryption keys and master key are specific to your account. If you need to share your encrypted snapshot
data, you can migrate the data to an unencrypted volume and share a snapshot of that volume. For more
information, see Migrating Data (p. 392).
When a snapshot is created from a volume with an AWS Marketplace product code, the product code is
propagated to the snapshot.
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You can take a snapshot of an attached volume that is in use. However, snapshots only capture data
that has been written to your Amazon EBS volume at the time the snapshot command is issued. This
might exclude any data that has been cached by any applications or the operating system. If you can
pause any file writes to the volume long enough to take a snapshot, your snapshot should be complete.
However, if you can't pause all file writes to the volume, you should unmount the volume from within the
instance, issue the snapshot command, and then remount the volume to ensure a consistent and complete
snapshot. You can remount and use your volume while the snapshot status is pending.
To create a snapshot for Amazon EBS volumes that serve as root devices, you should stop the instance
before taking the snapshot.
To unmount the volume in Windows, open Disk Management, right-click the volume to unmount, and
select Change Drive Letter and Path. Select the mount point to remove, and then click Remove.
To create a snapshot using the console
1.
Open the Amazon EC2 console.
2.
3.
4.
Click Snapshots in the navigation pane.
Click Create Snapshot.
In the Create Snapshot dialog box, select the volume to create a snapshot for, and then click Create.
To create a snapshot using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-snapshot (AWS CLI)
• ec2-create-snapshot (Amazon EC2 CLI)
• New-EC2Snapshot (AWS Tools for Windows PowerShell)
Deleting an Amazon EBS Snapshot
This section describes how to delete a snapshot.
Note
• If you make periodic snapshots of a volume, the snapshots are incremental so that only the
blocks on the device that have changed since your last snapshot are saved in the new snapshot.
Even though snapshots are saved incrementally, the snapshot deletion process is designed
so that you need to retain only the most recent snapshot in order to restore the volume.
• You cannot delete a snapshot of the root device of an Amazon EBS volume used by a registered
AMI. You must first deregister the AMI before you can delete the snapshot. For more information, see Deregistering Your AMI (p. 72).
To delete a snapshot using the console
1.
2.
3.
Open the Amazon EC2 console.
Click Snapshots in the navigation pane.
Select a snapshot and then select Delete from the Actions list.
4.
Click Yes, Delete.
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To delete a snapshot using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• delete-snapshot (AWS CLI)
• ec2-delete-snapshot (Amazon EC2 CLI)
• Remove-EC2Snapshot (AWS Tools for Windows PowerShell)
Copying an Amazon EBS Snapshot
Amazon Elastic Block Store (Amazon EBS) provides block level storage volumes for use with Amazon
Elastic Compute Cloud (Amazon EC2) instances. With Amazon EBS, you can create point-in-time snapshots of volumes and store them on Amazon Simple Storage Service (Amazon S3). After you've stored
a snapshot in Amazon S3, you can copy it from one AWS region to another, or within the same region,
using the Amazon EC2 console, Amazon EC2 CLI, or the API. You can use snapshot copies to create
backups of data, to create new Amazon EBS volumes, or to create Amazon Machine Images (AMIs).
You can have up to five snapshot copy requests in progress to a single destination per account. You can
copy any accessible Amazon EBS snapshots that have "completed" status, including shared snapshots
and snapshots that you've created. You can also copy AWS Marketplace, VM Import/Export, and AWS
Storage Gateway snapshots, but you must verify that the snapshot is supported in the destination region.
The first snapshot copy of a volume is always a full copy. Each subsequent snapshot copy is incremental,
meaning that only the blocks on the volume that have changed since your last snapshot copy to the same
destination are transferred. Incremental snapshots make the copy process faster. Support for incremental
snapshots is specific to a region pair. For example, if you copy a snapshot from the US East (N. Virginia)
region to the US West (Oregon) region, the first snapshot copy of the volume is a full copy. However,
subsequent snapshot copies of the same volume transferred between the same regions are incremental.
A snapshot copy can only be done incrementally as long as there is one full copy of the same volume
available in the destination region.
Note
To copy an Amazon Relational Database Service (Amazon RDS) snapshot, see Copying a DB
Snapshot in the Amazon Relational Database Service User Guide.
When you copy a snapshot, you are only charged for the data transfer and storage used to copy the
snapshot data across regions and to store the copied snapshot in the destination region. You are not
charged if the snapshot copy fails. However, if you cancel a snapshot copy that is not yet complete, or
delete the source snapshot while the copy is in progress, you are charged for the bandwidth of the data
transferred. The snapshot is copied across regions using the secure Amazon S3 Copy and the snapshot
copy receives a snapshot ID that's different from the original snapshot's ID.
You can use a copy of an Amazon EBS snapshot in the following ways:
• Geographic Expansion: You can launch your applications in a new region.
• Migration: You can migrate an application to a new region, to enable better availability and minimize
cost.
• Disaster Recovery: You can back up your data and logs across different geographical locations at
regular intervals. In case of disaster, you can restore your applications using point-in-time backups
stored in the secondary region. This minimizes data loss and recovery time.
The Amazon EC2 console, Amazon EC2 CLI, and the API are designed to provide an intuitive customer
experience. We use the push model in the console design to minimize user clicks for the Amazon EBS
snapshot use cases discussed earlier. You can easily initiate a copy from the console by starting with
the source region. We use a pull model in the Amazon EC2 CLI and the API, because these experiences
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factor in how customers use automation.You only need to know the source snapshot ID and source region
to initiate the copy using the Amazon EC2 CLI or API.
To copy a snapshot using the Amazon EC2 console
You can create a copy of an Amazon EBS snapshot using the Amazon EC2 console.
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click Snapshots.
3.
4.
Select the snapshot to copy, and then select Copy from the Actions list.
In the Copy Snapshot dialog box, update the following as necessary:
• Destination region: Select the region where you want to write the copy of the snapshot.
• Description: By default, the description includes information about the source snapshot so that
you can identify a copy from the original. You can change this description as necessary.
5.
Click Yes, Copy.
6.
In the Copy Snapshot confirmation dialog box, you can click Snapshots to go to the Snapshots
page in the region specified, or click Close.
To view the progress of the copy process later, switch to the destination region, and then refresh the
Snapshots page. Copies in progress are listed at the top of the page.
To copy a snapshot using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• copy-snapshot (AWS CLI)
• ec2-copy-snapshot (Amazon EC2 CLI)
• Copy-EC2Snapshot (AWS Tools for Windows PowerShell)
Viewing Snapshot Information
This section describes how to view descriptive information about the snapshots that you have created.
To view descriptive snapshot information in the console
1.
Open the Amazon EC2 console.
2.
3.
Click Snapshots in the navigation pane.
To reduce the list, select an option from the Filter list. For example, to view only your snapshots,
select Owned By Me.
To view more information about a snapshot, select it.
4.
To view descriptive snapshot information using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• describe-snapshots (AWS CLI)
• ec2-describe-snapshots (Amazon EC2 CLI)
• Get-EC2Snapshot (AWS Tools for Windows PowerShell)
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Sharing Snapshots
This section describes how to share your unencrypted Amazon EBS snapshots with your co-workers or
others in the AWS community by modifying the permissions of the snapshot. Encrypted snapshots cannot
be shared with anyone, because the keys that are used to encrypt your volumes and snapshots are
specific to your account. If you need to share your encrypted snapshot data, you can migrate the data to
an unencrypted volume and share a snapshot of that volume. For more information, see Migrating
Data (p. 392).
Users that you have authorized can quickly use your unencrypted Amazon EBS shared snapshots as
the basis for creating their own Amazon EBS volumes. If you choose, you can also make your data
available publicly to all AWS users. Users to whom you have granted access can create their own Amazon
EBS volumes based on your snapshot and your original snapshot remains intact.
Note
Snapshots are constrained to the region in which they are created. If you would like to share a
snapshot with another region, you need to copy the snapshot to that region. For more information
about copying snapshots, see Copying an Amazon EBS Snapshot (p. 388).
Important
When you share a snapshot (whether by sharing it with another AWS account or making it public
to all), you are giving others access to all the data on your snapshot. Share snapshots only with
people with whom you want to share all your snapshot data.
To modify snapshot permissions in the console
This procedure will help you to share your unencrypted snapshots. For security reasons, encrypted
snapshots cannot be shared or made public.
1.
2.
3.
4.
Open the Amazon EC2 console.
Click Snapshots in the navigation pane.
Select a snapshot and then select Modify Snapshot Permissions from the Actions list.
Choose whether to make the snapshot public or to share it with select AWS accounts:
Important
Making your snapshot public shares all snapshot data with everyone. Snapshots with AWS
Marketplace product codes cannot be made public.
• To make the snapshot public, select Public.
• To expose the snapshot only to specific AWS accounts, select Private, enter the ID of the AWS
account (without hyphens) in the AWS Account Number field, and click Add Permission. Repeat
until you've added all the required AWS accounts.
Click Save when you're done.
To view and modify snapshot permissions using the command line
To view the createVolumePermission attribute of a snapshot, you can use one of the following commands. For more information about these command line interfaces, see Accessing Amazon EC2 (p. 3).
• describe-snapshot-attribute (AWS CLI)
• ec2-describe-snapshot-attribute (Amazon EC2 CLI)
• Get-EC2SnapshotAttribute (AWS Tools for Windows PowerShell)
To modify the createVolumePermission attribute of a snapshot, you can use one of the following
commands.
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• modify-snapshot-attribute (AWS CLI)
• ec2-modify-snapshot-attribute (Amazon EC2 CLI)
• Edit-EC2SnapshotAttribute (AWS Tools for Windows PowerShell)
Amazon EBS Encryption
Amazon EBS encryption offers you a simple encryption solution for your Amazon EBS volumes without
the need for you to build, maintain, and secure your own key management infrastructure. When you
create an encrypted EBS volume and attach it to a supported instance type, data stored at rest on the
volume, disk I/O, and snapshots created from the volume are all encrypted. The encryption occurs on
the servers that host Amazon EC2 instances, providing encryption of data-in-transit from EC2 instances
to EBS storage.
This feature is supported on all Amazon EBS volume types (General Purpose (SSD), Provisioned IOPS
(SSD), and Magnetic), and you can expect the same provisioned IOPS performance on encrypted volumes
as you would with unencrypted volumes with a minimal effect on latency. You can access encrypted
Amazon EBS volumes the same way you access existing volumes; encryption and decryption are handled
transparently and they require no additional action from you, your EC2 instance, or your application.
Snapshots of encrypted EBS volumes are automatically encrypted, and volumes that are created from
encrypted EBS snapshots are also automatically encrypted.
Important
Encrypted boot volumes are not supported at this time.
The Amazon EBS encryption feature is also extended to snapshots of your encrypted volumes. Snapshots
that are taken from encrypted volumes are automatically encrypted. Volumes that are created from encrypted snapshots are also automatically encrypted.Your encrypted volumes and any associated snapshots
always remain protected.
Amazon EBS encryption is only available on select instance types. For more information, see Supported
Instance Types (p. 391).You can attach both encrypted and unencrypted volumes to a supported instance
type. You can use and manage encrypted EBS volumes and snapshots using the AWS Management
Console, command line interface (CLI), AWS SDKs, or the Amazon EC2 API.
Topics
• Encryption Key Management (p. 391)
• Supported Instance Types (p. 391)
• Considerations (p. 392)
• Migrating Data (p. 392)
Encryption Key Management
Amazon EBS encryption handles key management for you. Each newly created volume is encrypted with
a unique 256-bit key; any snapshots of this volume and any subsequent volumes created from those
snapshots also share that key. These keys are protected by our own key management infrastructure,
which implements strong logical and physical security controls to prevent unauthorized access.Your data
and associated keys are encrypted using the industry-standard AES-256 algorithm.
Supported Instance Types
Amazon EBS encryption is available on the instance types listed in the table below. These instance types
leverage the Intel AES New Instructions (AES-NI) instruction set to provide faster and simpler data protection.You can attach both encrypted and unencrypted volumes to these instance types simultaneously.
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Instance Family
Instance Types that Support Amazon EBS encryption
General purpose
m3.medium | m3.large | m3.xlarge | m3.2xlarge
Compute optimized
c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | c3.8xlarge
Memory optimized
cr1.8xlarge | r3.large | r3.xlarge | r3.2xlarge |
r3.4xlarge | r3.8xlarge
Storage optimized
i2.xlarge | i2.2xlarge | i2.4xlarge | i2.8xlarge
GPU instances
g2.2xlarge
For more information on these instance types, see Instance Type Details.
Considerations
Snapshots that are taken from encrypted volumes are automatically encrypted with the same volume
encryption key used to encrypt the volume. Volumes that are created from encrypted snapshots are also
automatically encrypted with the same volume encryption key used to create the snapshot. There is no
way to directly create an unencrypted volume from an encrypted snapshot or vice versa.
Public or shared snapshots of encrypted volumes are not supported, because other accounts would not
be able to decrypt your data.
There is also no way to encrypt an existing volume. However, you can migrate existing data between
encrypted volumes and unencrypted volumes. For more information, see To migrate data between encrypted and unencrypted volumes (p. 392).
Important
Encrypted boot volumes are not supported at this time.
Migrating Data
If you have existing data that you would like to store on an encrypted volume, you need to migrate the
data from your unencrypted volume to a new encrypted volume. Likewise, if you have data that currently
resides on an encrypted volume that you would like to share with others, you need to migrate the data
you want to share from your encrypted volume to a new unencrypted volume.
To migrate data between encrypted and unencrypted volumes
1.
2.
3.
4.
Create your destination volume (encrypted or unencrypted, depending on your use case) by following
the procedures in Creating an Amazon EBS Volume (p. 361).
Attach the destination volume to the instance that hosts the data you would like to migrate. For more
information, see Attaching an Amazon EBS Volume to an Instance (p. 365).
Make the destination volume available by following the procedures in Making an Amazon EBS Volume
Available for Use (p. 367).
Copy the data from your source directory to the destination volume.
From the Command Prompt window, use the robocopy command as follows to copy the data from
your source to the destination volume. In this example, the source data is located in D:\ and the
destination volume is mounted at E:\.
PS C:\Users\Administrator> robocopy D:\ E:\ /e /copyall /eta
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Amazon EBS Volume Performance
Several factors can affect the performance of Amazon EBS volumes, such as instance configuration, I/O
characteristics, workload demand, and storage configuration. After you learn the basics of working with
EBS volumes, it's a good idea to look at the I/O performance you require and at your options for increasing
EBS performance to meet those requirements.
Topics
• Amazon EBS Performance Tips (p. 393)
• Amazon EC2 Instance Configuration (p. 394)
• I/O Characteristics (p. 395)
• Workload Demand (p. 396)
• Pre-Warming Amazon EBS Volumes (p. 396)
• RAID Configuration (p. 398)
• Benchmark Volumes (p. 403)
Amazon EBS Performance Tips
• When you consider the performance requirements for your EBS storage application, it is important to
start with an EC2 configuration that is optimized for EBS and that can handle the bandwidth that your
application storage system requires. For more information, see Amazon EC2 Instance Configuration (p. 394).
• When you measure the performance of your EBS volumes, especially with General Purpose (SSD)
and Provisioned IOPS (SSD) volumes, it is important to understand the units of measure involved and
how performance is calculated. For more information, see I/O Characteristics (p. 395).
• There is a relationship between the maximum performance of your EBS volumes, the amount of I/O
you are driving to them, and the amount of time it takes for each transaction to complete. Each of these
factors (performance, I/O, and time) affects the others, and different applications are more sensitive to
one factor or another. For more information, see Workload Demand (p. 396).
• There is a 5 to 50 percent reduction in IOPS when you first access each block of data on a newly created
or restored EBS volume (General Purpose (SSD), Provisioned IOPS (SSD), or Magnetic). You can
avoid this performance hit by accessing each block in advance. For more information, see Pre-Warming
Amazon EBS Volumes (p. 396).
• General Purpose (SSD) and Provisioned IOPS (SSD) volumes have a throughput limit of 128 MB/s
per volume. Some instance types can drive more I/O throughput than you can provision for a single
volume. You can join multiple General Purpose (SSD) or Provisioned IOPS (SSD) volumes together
in a RAID 0 configuration to use the available bandwidth for these instances. You can also provide redundancy for your volumes with a RAID 1 (mirrored) configuration. For more information, see RAID
Configuration (p. 398).
• You can benchmark your storage and compute configuration to make sure you achieve the level of
performance you expect to see before taking your application live. For more information, see Benchmark
Volumes (p. 403).
• Amazon Web Services provides performance metrics for EBS that you can analyze and view with
Amazon CloudWatch and status checks that you can use to monitor the health of your volumes. For
more information, see Monitoring the Status of Your Volumes (p. 369).
• Frequent snapshots provide a higher level of data durability, but they may slightly degrade the performance of your application while the snapshot is in progress. This trade off becomes critical when you
have data that changes rapidly. Whenever possible, plan for snapshots to occur during off-peak times
in order to minimize workload impact. For more information, see Amazon EBS Snapshots (p. 385).
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Amazon EC2 Instance Configuration
When you plan and configure EBS volumes for your application, it is important to consider the configuration
of the instances that you will attach the volumes to. In order to get the most performance out of your EBS
volumes, you should attach them to an instance with enough bandwidth to support your volumes, such
as an EBS-optimized instance or an instance with 10 Gigabit network connectivity. This is especially important when you use General Purpose (SSD) or Provisioned IOPS (SSD) volumes, or when you stripe
multiple volumes together in a RAID configuration.
Use EBS-Optimized or 10 Gigabit Network Instances
Any performance-sensitive workloads that require minimal variability and dedicated Amazon EC2 to
Amazon EBS traffic, such as production databases or business applications, should use General Purpose
(SSD) or Provisioned IOPS (SSD) volumes that are attached to an EBS-optimized instance or an instance
with 10 Gigabit network connectivity. EC2 instances that do not meet this criteria offer no guarantee of
network resources. The only way to ensure sustained reliable network bandwidth between your EC2 instance and your EBS volumes is to launch the EC2 instance as EBS-optimized or choose an instance
type with 10 Gigabit network connectivity. To see which instance types include 10 Gigabit network connectivity, see Instance Type Details.
Choose an EC2 Instance with Enough Bandwidth
Launching an instance that is EBS-optimized provides you with a dedicated connection between your
EC2 instance and your EBS volume. However, it is still possible to provision EBS volumes that exceed
the available bandwidth for certain instance types, especially when multiple volumes are striped in a RAID
configuration. The following table shows which instance types are available to be launched as EBS-optimized, the dedicated throughput to Amazon EBS, the maximum amount of IOPS the instance can support
if you are using a 16 KB I/O size, and the approximate I/O bandwidth available on that connection in
MB/s. Be sure to choose an EBS-optimized instance that provides more dedicated EBS throughput than
your application needs; otherwise, the Amazon EBS to Amazon EC2 connection will become a performance
bottleneck.
Instance
Type
Max 16K IOPS**
Max
Bandwidth
(MB/s)**
c1.xlarge 1,000
8,000
125
c3.xlarge 500
4,000
62.5
c3.2xlarge 1,000
8,000
125
c3.4xlarge 2,000
16,000
250
g2.2xlarge 1,000
8,000
125
i2.xlarge 500
4,000
62.5
i2.2xlarge 1,000
8,000
125
i2.4xlarge 2,000
16,000
250
4,000
62.5
m1.xlarge 1,000
8,000
125
m2.2xlarge 500
4,000
62.5
m2.4xlarge 1,000
8,000
125
m1.large
Dedicated EBS Throughput
(Mbps)*
500
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Instance
Type
Dedicated EBS Throughput
(Mbps)*
Max 16K IOPS**
Max
Bandwidth
(MB/s)**
m3.xlarge 500
4,000
62.5
m3.2xlarge 1,000
8,000
125
r3.xlarge 500
4,000
62.5
r3.2xlarge 1,000
8,000
125
r3.4xlarge 2,000
16,000
250
The m1.large instance has a maximum 16 KB IOPS value of 4,000, but unless this instance type is
launched as EBS-optimized, that value is an absolute best-case scenario and is not guaranteed; to consistently achieve 4,000 16 KB IOPS, you must launch this instance as EBS-optimized. However, if two
4,000 IOPS volumes are attached to an EBS-optimized m1.large instance in a RAID 0 configuration,
the EC2 to EBS connection bandwidth limit will prevent these volumes from providing the 256 MB/s
maximum aggregate throughput available to them. In this case, we must use an EBS-optimized EC2 instance that supports 250 MB/s of throughput, such as the r3.4xlarge instance type.
General Purpose (SSD) and Provisioned IOPS (SSD) volumes have a throughput limit of 128 MB/s per
volume, which pairs nicely with a 1,000 Mbps EBS-optimized connection. Instance types that offer more
than 1,000 Mbps of throughput to Amazon EBS can use more than one General Purpose (SSD) or Provisioned IOPS (SSD) volume to take advantage of the available throughput.
Instance types with 10 Gigabit network connectivity support up to 800 MB/s of throughput and 48,000
16K IOPS for unencrypted Amazon EBS volumes and up to 25,000 16K IOPS for encrypted Amazon
EBS volumes. Since the maximum provisioned IOPS value for EBS volumes is 4,000, you can use many
EBS volumes simultaneously to reach the level of I/O performance available to these instance types. To
see which instance types include 10 Gigabit network connectivity, see Instance Type Details.
You should use EBS-optimized instances when available to get the full performance benefits of Amazon
EBS General Purpose (SSD) and Provisioned IOPS (SSD) volumes. For more information, see Amazon
EBS–Optimized Instances (p. 94).
I/O Characteristics
On a given volume configuration, certain I/O characteristics drive the performance behavior on the back
end. General Purpose (SSD) and Provisioned IOPS (SSD) volumes deliver consistent performance
whether an I/O operation is random or sequential, and also whether an I/O operation is to read or write
data. I/O size, however, does make an impact on IOPS because of the way they are measured. In order
to fully understand how General Purpose (SSD) and Provisioned IOPS (SSD) volumes will perform in
your application, it is important to know what IOPS are and how they are measured.
What are IOPS?
IOPS are input/output operations per second. Amazon EBS measures each I/O operation per second
(that is 256 KB or smaller) as one IOPS. I/O operations that are larger than 256 KB are counted in 256
KB capacity units. For example, a 1,024 KB I/O operation would count as 4 IOPS. When you provision
a 4,000 IOPS volume and attach it to an EBS-optimized instance that can provide the necessary bandwidth,
you can transfer up to 4,000 chunks of data per second (provided that the I/O does not exceed the 128
MB/s per volume throughput limit of General Purpose (SSD) and Provisioned IOPS (SSD) volumes).
This configuration could transfer 4,000 32 KB chunks, 2,000 64 KB chunks, or 1,000 128 KB chunks of
data per second as well, before hitting the 128 MB/s per volume throughput limit. If your I/O chunks are
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very large, you may experience a smaller number of IOPS than you provisioned because you are hitting
the volume throughput limit.
For 32 KB or smaller I/O operations, you should see the amount of IOPS that you have provisioned,
provided that you are driving enough I/O to keep the drives busy. For smaller I/O operations, you may
even see an IOPS value that is higher than what you have provisioned (when measured on the client
side), and this is because the client may be coalescing multiple smaller I/O operations into a smaller
number of large chunks.
If you are not experiencing the expected IOPS or throughput you have provisioned, ensure that your EC2
bandwidth is not the limiting factor; your instance should be EBS-optimized (or include 10 Gigabit network
connectivity) and your instance type EBS dedicated bandwidth should exceed the I/O throughput you intend
to drive. For more information, see Amazon EC2 Instance Configuration (p. 394). Another possible cause
for not experiencing the expected IOPS is that you are not driving enough I/O to the EBS volumes. For
more information, see Workload Demand (p. 396).
Workload Demand
Workload demand plays an important role in getting the most out of your General Purpose (SSD) and
Provisioned IOPS (SSD) volumes. In order for your volumes to deliver the amount of IOPS that are
available, they need to have enough I/O requests sent to them.There is a relationship between the demand
on the volumes, the amount of IOPS that are available to them, and the latency of the request (the amount
of time it takes for the I/O operation to complete).
Average Queue Length
The queue length is the number of pending I/O requests for a device. Optimal average queue length will
vary for every customer workload, and this value depends on your particular application's sensitivity to
IOPS and latency. If your workload is not delivering enough I/O requests to maintain your optimal average
queue length, then your volume might not consistently deliver the IOPS that you have provisioned.
However, if your workload maintains an average queue length that is higher than your optimal value, then
your per-request I/O latency will increase; in this case, you should provision more IOPS for your volume.
We recommend that you target an optimal average queue length of 1 for every 200 IOPS provisioned
and tune that value based on your application requirements. For example, a volume with 1,000 IOPS
provisioned should target an average queue length of 5.
Note
Per-request I/O latency may increase with higher average queue lengths.
Latency
Latency is the true end-to-end client time of an I/O operation; in other words, when the client sends a IO,
how long does it take to get an acknowledgement from the storage subsystem that the IO read or write
is complete. If your I/O latency is higher than you require, check your average queue length to make sure
that your application is not trying to drive more IOPS than you have provisioned. You can maintain high
IOPS while keeping latency down by maintaining a low average queue length (which is achieved by provisioning more IOPS for your volume).
Pre-Warming Amazon EBS Volumes
When you create any new EBS volume (General Purpose (SSD), Provisioned IOPS (SSD), or Magnetic)
or restore a volume from a snapshot, the back-end storage blocks are allocated to you immediately.
However, the first time you access a block of storage, it must be either wiped clean (for new volumes) or
instantiated from its snapshot (for restored volumes) before you can access the block. This preliminary
action takes time and can cause a 5 to 50 percent loss of IOPS for your volume the first time each block
is accessed. For most applications, amortizing this cost over the lifetime of the volume is acceptable.
Performance is restored after the data is accessed once.
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However, you can avoid this performance hit in a production environment by writing to or reading from
all of the blocks on your volume before you use it; this process is called pre-warming. Writing to all of the
blocks on a volume is preferred, but that is not an option for volumes that were restored from a snapshot,
because that would overwrite the restored data. For a completely new volume that was created from
scratch, you should write to all blocks before using the volume. For a new volume created from a snapshot,
you should read all the blocks that have data before using the volume.
Pre-Warming Amazon EBS Volumes on Windows
There are multiple ways to pre-warm EBS volumes on Windows. The most simple solution is to provide
a full format of the volume. Use the following command to perform a full format of a new volume:
Warning
The following command will destroy any existing data on the volume.
C:\>format drive_letter: /p:1
You can also perform a full format by right-clicking on the drive in a Windows Explorer window and
clicking Format. Because this operation destroys all data on the volume, it is only appropriate for new
volumes. For a read-only pre-warming tool, which allows you to pre-warm volumes that have been restored
from a snapshot or that contain existing data (such as the C: drive), you should consider dd for Windows.
To install dd for Windows
The dd for the Windows program provides a similar experience to the dd program that is commonly
available for Linux and Unix systems, and it allows you to pre-warm Amazon EBS volumes that have
been restored from snapshots. At the time of this writing, the most recent beta version contains the
/dev/null virtual device that is required to pre-warm volumes restored from snapshots. Full documentation for the program is available at http://www.chrysocome.net/dd.
1.
2.
3.
4.
Download the most recent binary version of dd for Windows from http://www.chrysocome.net/dd.
You must use version 0.6 beta 3 or newer to pre-warm restored volumes.
(Optional) Create a folder for command line utilities that is easy to locate and remember, such as
C:\bin. If you already have a designated folder for command line utilities, you can use that folder
instead in the following step.
Unzip the binary package and copy the dd.exe file to your command line utilities folder (for example,
C:\bin).
Add the command line utilities folder to your Path environment variable so you can execute the
programs in that folder from anywhere.
Important
The following steps don't update the environment variables in your current command prompt
windows. The command prompt windows that you open after you complete these steps will
contain the updates. This is why it's necessary for you to open a new command prompt
window to verify that your environment is set up properly.
a.
Click Start, right-click Computer, and then click Properties.
b.
c.
d.
Click Advanced system settings.
Click Environment Variables.
Under System Variables, click the variable called Path and then click Edit.
e.
In Variable value, append a semicolon and the location of your command line utility folder
(;C:\bin\) to the end of the existing value.
f.
Click OK to close the Edit System Variable window.
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To Pre-Warm a Volume Using dd for Windows
1.
Use the wmic command to list the available disks on your system.
C:\>wmic diskdrive get size,deviceid
DeviceID
Size
\\.\PHYSICALDRIVE2 80517265920
\\.\PHYSICALDRIVE1 80517265920
\\.\PHYSICALDRIVE0 128849011200
\\.\PHYSICALDRIVE3 107372805120
2.
Identify the disk you want to pre-warm in the following steps. The C: drive is on \\.\PHYSICALDRIVE0. You can use the diskmgmt.msc utility to compare drive letters to disk drive numbers if you
are not sure which drive number to use.
Execute the following command to read all blocks on the specified device (and send the output to
the /dev/null virtual device). This command safely pre-warms your existing data and any restored
snapshots of volumes that were fully pre-warmed.
C:\>dd if=\\.\PHYSICALDRIVEn of=/dev/null bs=1M --progress --size
3.
When the operation completes, you are ready to use your new volume. For more information, see
Making an Amazon EBS Volume Available for Use (p. 367).
RAID Configuration
With Amazon EBS, you can use any of the standard RAID configurations that you can use with a traditional bare metal server, as long as that particular RAID configuration is supported by the operating system
for your instance. This is because all RAID is accomplished at the software level. For greater I/O performance than you can achieve with a single volume, RAID 0 can stripe multiple volumes together; for on-instance redundancy, RAID 1 can mirror two volumes together.
Note
Amazon EBS volume data is replicated across multiple servers in an Availability Zone to prevent
the loss of data from the failure of any single component. This replication makes Amazon EBS
volumes ten times more reliable than typical commodity disk drives. For more information, see
Amazon EBS Availability and Durability in the Amazon EBS product detail pages.
This topic provides basic RAID setup examples. For much more detailed information on RAID configuration,
performance, and recovery, see the Linux RAID Wiki at https://raid.wiki.kernel.org/index.php/Linux_Raid.
The following table compares the common RAID 0 and RAID 1 options.
Configuration Use
Advantages
Disadvantages
RAID 0
I/O is distributed across the
volumes in a stripe. If you
add a volume, you get the
straight addition of
throughput.
Performance of the stripe is
limited to the worst
performing volume in the set.
Loss of a single volume
results in a complete data
loss for the array.
When I/O performance is
more important than fault
tolerance; for example, as in
a heavily used database
(where data replication is
already set up separately).
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Configuration Use
RAID 1
Advantages
When fault tolerance is more Safer from the standpoint
important than I/O
of data durability.
performance; for example,
as in a critical application.
Disadvantages
Does not provide a write
performance improvement;
requires more Amazon EC2
to Amazon EBS bandwidth
than non-RAID
configurations because the
data is written to multiple
volumes simultaneously.
Important
RAID 5 and RAID 6 are not recommended for Amazon EBS because the parity write operations
of these RAID modes consume some of the IOPS available to your volumes. Depending on the
configuration of your RAID array, these RAID modes provide 20-30% fewer usable IOPS than
a RAID 0 configuration. Increased cost is a factor with these RAID modes as well; when using
identical volume sizes and speeds, a 2-volume RAID 0 array can outperform a 4-volume RAID
6 array that costs twice as much.
Creating a RAID 0 array allows you to achieve a higher level of performance for a file system than you
can provision on a single Amazon EBS volume. A RAID 1 array offers a "mirror" of your data for extra
redundancy. Before you perform this procedure, you need to decide how large your RAID array should
be and how many IOPS you want to provision.
The resulting size of a RAID 0 array is the sum of the sizes of the volumes within it, and the bandwidth
is the sum of the available bandwidth of the volumes within it. The resulting size and bandwidth of a RAID
1 array is equal to the size and bandwidth of the volumes in the array. For example, two 500 GiB Amazon
EBS volumes with 4,000 provisioned IOPS each will create a 1 TiB RAID 0 array with an available
bandwidth of 8,000 IOPS and 256 MB/s of throughput or a 500 GiB RAID 1 array with an available
bandwidth of 4,000 IOPS and 128 MB/s of throughput.
Creating a RAID Array on Windows
To create a RAID array on Windows
1.
Create the Amazon EBS volumes for your array. For more information, see Creating an Amazon
EBS Volume (p. 361).
Important
Create volumes with identical size and IOPS performance values for your array. Make sure
you do not create an array that exceeds the available bandwidth of your EC2 instance. For
more information, see Amazon EC2 Instance Configuration (p. 394).
2.
3.
4.
Attach the Amazon EBS volumes to the instance that you want to host the array. For more information,
see Attaching an Amazon EBS Volume to an Instance (p. 365).
Connect to your Windows instance. For more information, see Connecting to Your Windows Instance
Using RDP (p. 139).
Open a command prompt and type the diskpart command.
PS C:\Users\Administrator> diskpart
Microsoft DiskPart version 6.1.7601
Copyright (C) 1999-2008 Microsoft Corporation.
On computer: WIN-BM6QPPL51CO
5.
At the DISKPART prompt, list the available disks with the following command.
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DISKPART> list disk
Disk ###
-------Disk 0
Disk 1
Disk 2
Disk 3
Disk 4
Disk 5
Disk 6
Status
------------Online
Online
Online
Online
Online
Online
Online
Size
------30 GB
8 GB
8 GB
8 GB
8 GB
419 GB
419 GB
Free
------0 B
0 B
0 B
0 B
0 B
0 B
0 B
Dyn
---
Gpt
---
Identify the disks you want to use in your array and take note of their disk numbers.
6.
Each disk you want to use in your array must be an online dynamic disk that does not contain any
existing volumes. Use the following steps to convert basic disks to dynamic disks and to delete any
existing volumes.
a.
Select a disk you want to use in your array with the following command, substituting n with your
disk number.
DISKPART> select disk n
Disk n is now the selected disk.
b.
If the selected disk is listed as Offline, bring it online by running the online disk command.
c.
If the selected disk does not have an asterisk in the Dyn column in the previous list disk command
output, you need to convert it to a dynamic disk.
DISKPART> convert dynamic
Note
If you receive an error that the disk is write protected, you can clear the read-only flag
with the ATTRIBUTE DISK CLEAR READONLY command and then try the dynamic
disk conversion again.
d.
Use the detail disk command to check for existing volumes on the selected disk.
DISKPART> detail disk
XENSRC PVDISK SCSI Disk Device
Disk ID: 2D8BF659
Type
: SCSI
Status : Online
Path
: 0
Target : 1
LUN ID : 0
Location Path : PCIROOT(0)#PCI(0300)#SCSI(P00T01L00)
Current Read-only State : No
Read-only : No
Boot Disk : No
Pagefile Disk : No
Hibernation File Disk : No
Crashdump Disk : No
Clustered Disk : No
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Volume ###
Info
----------------Volume 2
Ltr
Label
Fs
Type
Size
Status
---
-----------
-----
----------
-------
---------
D
NEW VOLUME
FAT32
Simple
8189 MB
Healthy
Note any volume numbers on the disk. In this example, the volume number is 2. If there are no
volumes, you can skip the next step.
e.
(Only required if volumes were identified in the previous step) Select and delete any existing
volumes on the disk that you identified in the previous step.
Warning
This destroys any existing data on the volume.
i.
Select the volume, substituting n with your volume number.
DISKPART> select volume n
Volume n is the selected volume.
ii.
Delete the volume.
DISKPART> delete volume
DiskPart successfully deleted the volume.
iii.
f.
7.
Repeat these substeps for each volume you need to delete on the selected disk.
Repeat Step 6 (p. 400) for each disk you want to use in your array.
Verify that the disks you want to use are now dynamic.
DISKPART> list disk
Disk ###
-------Disk 0
Disk 1
Disk 2
Disk 3
* Disk 4
Disk 5
Disk 6
8.
Status
------------Online
Online
Online
Online
Online
Online
Online
Size
------30 GB
8 GB
8 GB
8 GB
8 GB
419 GB
419 GB
Free
------0 B
0 B
0 B
0 B
0 B
0 B
0 B
Dyn
---
Gpt
---
*
*
*
*
Create your raid array. On Windows, a RAID 0 volume is referred to as a striped volume and a RAID
1 volume is referred to as a mirrored volume.
(Striped volumes only) To create a striped volume array on disks 1 and 2, use the following command
(note the stripe option to stripe the array):
DISKPART> create volume stripe disk=1,2
DiskPart successfully created the volume.
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(Mirrored volumes only) To create a mirrored volume array on disks 3 and 4, use the following command (note the mirror option to mirror the array):
DISKPART> create volume mirror disk=3,4
DiskPart successfully created the volume.
9.
Verify your new volume.
DISKPART> list volume
Volume ###
Ltr
Label
Fs
Type
Size
-------------Volume 0
* Volume 1
Volume 2
Volume 5
Volume 6
---
-----------
-----
----------
-------
C
NTFS
Partition
RAW
Mirror
RAW
Stripe
Temporary S NTFS
Partition
Temporary S NTFS
Partition
Z
Y
Status
---------
Note that for this example the Type column lists a Mirror volume and a Stripe volume.
Select the volume you want to format, substituting n with your volume number.
DISKPART> select volume n
Volume n is the selected volume.
b.
Format the volume.
Note
To perform a full format, omit the quick option.
DISKPART> format quick recommended label="My new volume"
100 percent completed
DiskPart successfully formatted the volume.
c.
Assign an available drive letter to your volume.
DISKPART> assign letter f
DiskPart successfully assigned the drive letter or mount point.
Your new volume is now ready to use.
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---
29 GB Healthy
System
8190 MB Healthy
15 GB Healthy
419 GB Healthy
419 GB Healthy
10. Select and format your volume so that you can begin using it.
a.
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Benchmark Volumes
This section demonstrates how you can test the performance of Amazon EBS volumes by simulating
workloads similar to those of a database application. The process is as follows:
1. Launch an EBS-optimized instance
2. Create new Amazon EBS volumes
3. Attach the volumes to your EBS-optimized instance
4. Create a RAID array from the volumes, then format and mount it
5. Install a tool to benchmark I/O performance
6. Benchmark the I/O performance of your volumes
7. Delete your volumes and terminate your instance so that you don't continue to incur charges
Set Up Your Instance
To get optimal performance from General Purpose (SSD) and Provisioned IOPS (SSD) volumes, we recommend that you use an EBS-optimized instance. EBS-optimized instances deliver dedicated throughput
between Amazon EC2 and Amazon EBS, with options between 500 and 2,000 Mbps, depending on the
instance type.
To create an EBS-optimized instance, select Launch as an EBS-Optimized instance when launching
the instance using the EC2 console, or specify --ebs-optimized when using the command line. Be sure
that you launch one of the instance types that supports this option. For the example tests in this topic,
we recommend that you launch an m1.xlarge instance. For more information, see Amazon EBS–Optimized Instances (p. 94).
To create a General Purpose (SSD) volume, select General Purpose (SSD) when creating the volume
using the EC2 console, or specify --type gp2 when using the command line. To create a Provisioned
IOPS (SSD) volume, select Provisioned IOPS (SSD) when creating the volume using the EC2 console,
or specify --type io1 --iops iops when using the command line. For information about attaching these
volumes to your instance, see Attaching an Amazon EBS Volume to an Instance (p. 365).
For the example tests, we recommend that you create a RAID array with 6 volumes, which offers a high
level of performance. Because you are charged by the gigabytes used (and the number of provisioned
IOPS for Provisioned IOPS (SSD) volumes), not the number of volumes, there is no additional cost for
creating multiple, smaller volumes and using them to create a stripe set. If you're using Oracle ORION
to benchmark your volumes, it can simulate striping the same way that Oracle ASM does, so we recommend that you let ORION do the striping. If you are using a different benchmarking tool, you'll need to
stripe the volumes yourself.
For information about creating a striped volume on Windows, see Create a Striped Volume in Windows.
On Windows, a full format of the volume pre-warms it. Use the format <drive letter> /p:1 command
to write zeros to the entire disk.
Important
Unless you pre-warm the volume, you might see between a 5 to 50 percent reduction in IOPS
when you first access it.
Install Benchmark Tools
The following are among the possible tools you can install and use to benchmark the performance of
Amazon EBS volumes.
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Tool
Description
fio
For benchmarking I/O performance. (Note that fio has a dependency on
libaio-devel.)
Oracle Orion
Calibration Tool
For calibrating the I/O performance of storage systems to be used with Oracle
databases.
SQLIO
For calibrating the I/O performance of storage systems to be used with Microsoft
SQL Server.
For information about how to improve the performance of your Microsoft SQL
Server databases, see Optimizing Databases on the MSDN website.
Example Benchmarking Commands
These benchmarking tools support a wide variety of test parameters. You should use commands that
approximate the workloads your volumes will support. These commands are intended as examples to
help you get started.
Run the following commands on an EBS-optimized instance with attached Amazon EBS volumes that
have been pre-warmed.
When you are finished testing your volumes, see these topics for help cleaning up: Deleting an Amazon
EBS Volume (p. 380) and Terminate Your Instance (p. 147).
fio Commands
Run fio on the stripe set that you created.
The following command performs 16 KB random write operations.
C:\> fio --directory=/media/p_iops_vol0
--name fio_test_file --direct=1 --rw=randwrite --bs=16k --size=1G
--numjobs=16 --time_based --runtime=180 --group_reporting
The following command performs 16 KB random read operations.
C:\> fio --directory=/media/p_iops_vol0
--name fio_test_file --direct=1 --rw=randread --bs=16k --size=1G
--numjobs=16 --time_based --runtime=180 --group_reporting
For more information about interpreting the results, see this tutorial: Inspecting disk IO performance with
fio.
Oracle ORION Commands
Run ORION on the Amazon EBS volumes, having it simulate Oracle ASM striping instead of providing it
with a stripe set that uses Windows striping.
In the directory where you installed ORION, create a file, piops_test.lun, to specify the volumes for
your stripe set. The following example file specifies six volumes to be striped.
\\.\D:
\\.\E:
\\.\F:
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\\.\G:
\\.\H:
\\.\I:
The following command performs 16 KB random I/O operations (80 percent reads and 20 percent writes),
simulating 64 KB RAID-0 stripes.
C:\> orion -run advanced -testname piops_test -size_small 16 -size_large 16
-type rand -simulate raid0 -stripe 64 -write 80 -matrix detailed -num_disks 6
After the command is finished, ORION generates output files with the results in the same directory. For
more information about ORION, see its Documentation.
SQLIO Commands
Run SQLIO on the stripe set that you created.
Create a file, param.txt, to specify your striped set. The contents of this file should look something like
this (here, d:\ corresponds to the striped set, and the test uses 6 threads and a 10 GB file).
d:\bigtestfile.dat 6 0x0 10240
The following command performs 16 KB random data writes.
C:\> sqlio -kW -s600 -frandom -t8 -o8 -b16 -LS -BH -Fparam.txt
The following command performs 16 KB random data reads.
C:\> sqlio -kR -s600 -frandom -t8 -o8 -b16 -LS -BH -Fparam.txt
The results are displayed in the Command Prompt window. For more information about SQLIO, see the
readme.txt file in your SQLIO installation directory.
Amazon EBS API and Command Overview
The following table summarizes the available commands for Amazon EBS and corresponding API actions
for creating and using Amazon EBS volumes.
Command/Action
Description
attach-volume (AWS CLI)
Attaches the specified volume to a specified instance, exposing the
volume using the specified device name.
ec2-attach-volume (Amazon EC2
CLI)
A volume can be attached to only a single instance at any time. The
volume and instance must be in the same Availability Zone. The
AttachVolume
instance must be in the running or stopped state.
copy-snapshot (AWS CLI)
ec2-copy-snapshot (Amazon
EC2 CLI)
Copies a point-in-time snapshot of an Amazon EBS volume and
stores it in Amazon S3. You can copy the snapshot within the same
region or from one region to another. You can use the snapshot to
create new Amazon EBS volumes or AMIs.
CopySnapshot
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Command/Action
Description
create-snapshot (AWS CLI)
Creates a snapshot of the volume you specify.
ec2-create-snapshot (Amazon
EC2 CLI)
After the snapshot is created, you can use it to create volumes that
contain exactly the same data as the original volume.
CreateSnapshot
create-volume (AWS CLI)
Creates a new Amazon EBS volume using the specified size and
type, or based on a previously created snapshot.
ec2-create-volume (Amazon EC2
CLI)
CreateVolume
delete-snapshot (AWS CLI)
Deletes the specified snapshot.
ec2-delete-snapshot (Amazon
EC2 CLI)
This command does not affect currently running Amazon EBS
volumes, regardless of whether they were used to create the snapshot
or were derived from the snapshot.
DeleteSnapshot
delete-volume (AWS CLI)
Deletes the specified volume. The command does not delete any
snapshots that were created from the volume.
ec2-delete-volume (Amazon EC2
CLI)
DeleteVolume
describe-snapshot-attribute
(AWS CLI)
Describes attributes for a snapshot.
ec2-describe-snapshot-attribute
(Amazon EC2 CLI)
DescribeSnapshotAttribute
describe-snapshots (AWS CLI)
Describes the specified snapshot.
ec2-describe-snapshots
(Amazon EC2 CLI)
Describes all snapshots, including their source volume, snapshot
initiation time, progress (percentage complete), and status (pending,
completed, and so on.).
DescribeSnapshots
describe-volume-attribute (AWS Describes an attribute of a volume.
CLI)
ec2-describe-volume-attribute
(Amazon EC2 CLI)
DescribeVolumeAttribute
describe-volume-status (AWS
CLI)
Describes the status of one or more volumes. Volume status provides
the result of the checks performed on your volumes to determine
events that can impair the performance of your volumes.
ec2-describe-volume-status
(Amazon EC2 CLI)
DescribeVolumeStatus
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Instance Store
Command/Action
Description
describe-volumes (AWS CLI)
DescribeVolumes
Describes your volumes, including size, volume type, source
snapshot, Availability Zone, creation time, status (available or
in-use). If the volume is in-use, an attachment line shows the
volume ID, the instance ID to which the volume is attached, the device
name exposed to the instance, its status (attaching, attached,
detaching, detached), and when it attached.
detach-volume (AWS CLI)
Detaches the specified volume from the instance it's attached to.
ec2-detach-volume (Amazon
EC2 CLI)
This command does not delete the volume. The volume can be
attached to another instance and will have the same data as when
it was detached.
ec2-describe-volumes (Amazon
EC2 CLI)
DetachVolume
enable-volume-io (AWS CLI)
Enables I/O operations for a volume that had I/O operations disabled
because the data on the volume was potentially inconsistent.
ec2-enable-volume-io (Amazon
EC2 CLI)
EnableVolumeIO
modify-snapshot-attribute (AWS Modifies permissions for a snapshot (i.e., who can create volumes
CLI)
from the snapshot). You can specify one or more AWS accounts, or
specify all to make the snapshot public.
ec2-modify-snapshot-attribute
(Amazon EC2 CLI)
ModifySnapshotAttribute
modify-volume-attribute (AWS
CLI)
Modifies a volume's attributes to determine whether a volume should
be automatically enabled for I/O operations.
ec2-modify-volume-attribute
(Amazon EC2 CLI)
ModifyVolumeAttribute
reset-snapshot-attribute (AWS
CLI)
Resets permission settings for the specified snapshot.
ec2-reset-snapshot-attribute
(Amazon EC2 CLI)
ResetSnapshotAttribute
Amazon EC2 Instance Store
Many Amazon EC2 instance types can access disk storage from disks that are physically attached to the
host computer. This disk storage is referred to as instance store.
Contents
• Instance Storage Concepts (p. 408)
• Instance Stores Available on Instance Types (p. 409)
• Instance Store Device Names (p. 410)
• Instance Store Usage Scenarios (p. 411)
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• Adding Instance Store Volumes to an AMI (p. 412)
Instance Storage Concepts
An instance store provides temporary block-level storage for use with an instance. The size of an instance
store ranges from 900 MiB to up to 48 TiB, and varies by instance type. Larger instance types have larger
instance stores. Some smaller instance families, such as T2 and T1, do not support instance store volumes
at all and they use Amazon EBS exclusively for storage. For more information, see Instance Stores
Available on Instance Types (p. 409).
An instance store consists of one or more instance store volumes. When you launch an instance storebacked AMI, each instance store volume available to the instance is automatically mapped. When you
launch an Amazon EBS-backed AMI, instance store volumes must be configured using block device
mapping at launch time (with either the default block device mapping for the chosen AMI or manually
using the console or the CLI or SDK tools). Volumes must be formatted and mounted on the running instance before they can be used. By default, instances launched from an Amazon EBS-backed AMI have
no mounted instance store volumes. Instances launched from an instance store-backed AMI have a
mounted instance store volume for the virtual machine's root device volume (the size of this volume varies
by AMI, but the maximum size is 10 GiB) in addition to the instance store volumes included with the instance
type. For more information about instance store-backed AMIs and Amazon EBS-backed AMIs, see
Storage for the Root Device (p. 49).
Instance store volumes are usable only from a single instance during its lifetime; they can't be detached
and then attached to another instance. If you create an AMI from an instance, the data on its instance
store volumes isn't preserved and isn't present on the instance store volumes for the instances that you
launch from this AMI. While an instance store is dedicated to a particular instance, the disk subsystem
is shared among instances on a host computer, as shown in the following figure.
The data in an instance store persists only during the lifetime of its associated instance. If an instance
reboots (intentionally or unintentionally), data in the instance store persists. However, data on instance
store volumes is lost under the following circumstances:
• Failure of an underlying drive
• Stopping an Amazon EBS-backed instance
• Terminating an instance
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Therefore, do not rely on instance store volumes for valuable, long-term data. Instead, keep your data
safe by using a replication strategy across multiple instances, storing data in Amazon S3, or using Amazon
EBS volumes. For more information, see Amazon Elastic Block Store (Amazon EBS) (p. 355).
When you launch an instance, whether it's launched from an Amazon EBS-backed AMI or an instance
store-backed AMI, you can attach instance store volumes to the instance using block device mapping.
For more information, see Adding Instance Store Volumes to an AMI (p. 412).
Instance Stores Available on Instance Types
Amazon EC2 instances are divided into different instance types, which determine the size of the instance
store available on the instance by default. When you launch an instance, you can specify an instance
type or use the default instance type, which is an m1.small instance.
The instance type also determines the type of hardware for your instance store volumes. Some instance
types use solid state drives (SSD) to deliver very high random I/O performance. This is a good option
when you need storage with very low latency, but you don't need it to persist when the instance terminates,
or you can take advantage of fault tolerant architectures. For more information see HI1 Instances (p. 82).
The following table shows the instance types along with the size and quantity of the instance store volumes
available to each instance type; these instance store volumes are included as part of the instance's hourly
cost.
Instance Type
Instance Store Volumes
c1.medium
1 x 350 GB
c1.xlarge
4 x 420 GB (1680 GB)
c3.large
2 x 16 GB SSD (32 GB)
c3.xlarge
2 x 40 GB SSD (80 GB)
c3.2xlarge
2 x 80 GB SSD (160 GB)
c3.4xlarge
2 x 160 GB SSD (320 GB)
c3.8xlarge
2 x 320 GB SSD (640 GB)
cc2.8xlarge
4 x 840 GB (3360 GB)
cg1.4xlarge
2 x 840 GB (1680 GB)
cr1.8xlarge
2 x 120 GB SSD (240 GB)
g2.2xlarge
1 x 60 GB SSD
hi1.4xlarge
2 x 1024 GB SSD (2048 GB)
hs1.8xlarge
24 x 2048 GB (49 TB)
i2.xlarge
1 x 800 GB SSD
i2.2xlarge
2 x 800 GB SSD (1600 GB)
i2.4xlarge
4 x 800 GB SSD (3200 GB)
i2.8xlarge
8 x 800 GB SSD (6400 GB)
m1.small
1 x 160 GB
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Instance Type
Instance Store Volumes
m1.medium
1 x 410 GB
m1.large
2 x 420 GB (840 GB)
m1.xlarge
4 x 420 GB (1680 GB)
m2.xlarge
1 x 420 GB
m2.2xlarge
1 x 850 GB
m2.4xlarge
2 x 840 GB (1680 GB)
m3.medium
1 x 4 GB SSD
m3.large
1 x 32 GB SSD
m3.xlarge
2 x 40 GB SSD (80 GB)
m3.2xlarge
2 x 80 GB SSD (160 GB)
r3.large
1 x 32 GB
r3.xlarge
1 x 80 GB
r3.2xlarge
1 x 160 GB
r3.4xlarge
1 x 320 GB
r3.8xlarge
2 X 320 GB (640 GB)
t1.micro
None (use Amazon EBS volumes)
t2.micro
None (use Amazon EBS volumes)
t2.small
None (use Amazon EBS volumes)
t2.medium
None (use Amazon EBS volumes)
Instance Store Device Names
Within an instance store, instance store volumes are exposed as block devices. The virtual devices for
instance store volumes are ephemeral[0-23]. Instance types that support one instance store volume
have ephemeral0. Instance types that support two instance store volumes have ephemeral0 and
ephemeral1. Instance types that support four instance store volumes have ephemeral0, ephemeral1,
ephemeral2, and ephemeral3, and so on.
Many instance store volumes are pre-formatted with the ext3 file system. SSD-based instance store
volumes that support TRIM instruction are not pre-formatted with any file system. However, you can
format volumes with the file system of your choice after you launch your instance. A Windows instance
uses a built-in tool, EC2Config Service, to reformat the instance store volumes available on an instance
with the NTFS file system.
Each entry in a block device mapping consists of a device name and the volume that it's mapped to. The
instance store volumes are available to the instance, but you can't access them until they are mounted.
A Windows instance uses the EC2Config Service to mount the instance store volumes for an instance.
The block device driver for the instance assigns the actual volume name when mounting the volume, and
the name assigned can be different than the name that Amazon EC2 recommends.
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An instance can have multiple instance store volumes mapped to a device. However, the number and
size of these volumes must not exceed the instance store available for the instance type. For more information, see Instance Stores Available on Instance Types (p. 409).
Instance Store Usage Scenarios
Instance store volumes are ideal for temporary storage of information that changes frequently, such as
buffers, caches, scratch data, and other temporary content, or for data that is replicated across a fleet of
instances, such as a load-balanced pool of web servers.
Making Instance Stores Available on Your Instances
Instances that use Amazon EBS for the root device do not, by default, have instance store available at
boot time. Also, you can't attach instance store volumes after you've launched an instance. Therefore, if
you want your Amazon EBS-backed instance to use instance store volumes, you must specify them using
a block device mapping when you create your AMI or launch your instance. Examples of block device
mapping entries are: /dev/sdb=ephemeral0 and /dev/sdc=ephemeral1. For more information about
block device mapping, see Block Device Mapping (p. 415)
The following procedure describes how to launch an Amazon EBS-backed m1.large Windows instance
with instance store volumes.
Launch Amazon EBS-backed Windows Instances with Instance Store Volumes
1.
2.
3.
4.
5.
Locate an Amazon EBS-backed Windows AMI.
Launch an instance that supports at least two instance store volumes with this AMI and add block
device mapping entries for ephemeral0 and ephemeral1.
For more information, see To add volumes to an instance (p. 421).
Connect to the instance.
On the Start menu, choose Computer.
Devices listed:
• Local Disk C:/ 9.98GiB
• Local Disk D:/ 419GiB
• Local Disk E:/ 419GiB
6.
Double-click Local Disk C:/. You can see the list of installed applications. This is your root drive.
7.
Double-click Local Disk D:/ and then double-click Local Disk E:/. These drives are empty. They
are the instance stores that come with your m1.large instance, and they are available for you to
use with your applications.
You can also map instance store volumes to block devices when you create an AMI. The instances
launched from such an AMI have instance store volumes at boot time. For information about adding a
block device mapping while creating an AMI, see Creating an Amazon EBS-Backed Windows AMI (p. 62).
The following procedure describes how to access the instance store volumes from within an Amazon
EC2 instance store-backed m1.large Windows instance.
Tasks for Accessing Instance Stores on Amazon EC2 instance store-backed Windows
Instances
1 Locate an Amazon EC2 instance store-backed Windows AMI.
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2 Launch an m1.large instance.
3 Connect to the instance.
4 On the Start menu, choose Computer.
5 Devices listed:
• Local Disk C:/ 9.98GiB
• Local Disk D:/ 419GiB
• Local Disk E:/ 419GiB
6 Double-click Local Disk C:/. You see the list of all installed applications. This is your root drive.
7 Double-click Local Disk D:/ and then double-click Local Disk E:/. These are empty. They are the
instance store volumes that come with your m1.large instance, and they are available to use with
your applications just like any physical drive.
Suppressing Instance Stores at Launch Time
You can prevent a particular instance storage volume from attaching to the instance. You can do this for
both Amazon EC2 instance store-backed instances and Amazon EBS-backed instances. For example,
specifying the mapping /dev/sdc=none when launching an instance prevents /dev/sdc from attaching
to the instance. For more information about block device mapping, see Block Device Mapping (p. 415).
Adding Instance Store Volumes to an AMI
Amazon EBS-backed AMIs don't include an instance store by default. However, you might want instances
launched from your Amazon EBS-backed AMIs to include instance store volumes.
After you add instance store volumes to an AMI, any instance you launch from the AMI includes these
instance store volumes. You can confirm that the instance store devices are available from within the instance itself using instance metadata. For more information, see Viewing the Instance Block Device
Mapping for Instance Store Volumes (p. 424).
For M3 instances, you must specify instance store volumes in the block device mapping for the instance.
When you launch an M3 instance, we ignore any instance store volumes specified in the block device
mapping for the AMI.
You can create an AMI that includes instance store volumes using the console or the command line.
To add instance store volumes to an AMI using the console
1.
2.
3.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
Select an instance and select Create Image from the Actions list.
4.
5.
In the Create Image dialog, add a meaningful name and description to your image.
For each instance store volume, Click Add New Volume, select an instance store volume from the
Type list and a device name from Device.
6.
Click Create Image.
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Amazon S3
To add instance store volumes to an AMI using the command line
You can use one of the following commands. For more information about these command line interfaces,
see Accessing Amazon EC2 (p. 3).
• create-image or register-image (AWS CLI)
• ec2-create-image ec2-register (Amazon EC2 CLI)
For more information, see Block Device Mapping (p. 415).
Amazon Simple Storage Service (Amazon S3)
Amazon S3 is a repository for Internet data. Amazon S3 provides access to reliable, fast, and inexpensive
data storage infrastructure. It is designed to make web-scale computing easy by enabling you to store
and retrieve any amount of data, at any time, from within Amazon EC2 or anywhere on the web. Amazon
S3 stores data objects redundantly on multiple devices across multiple facilities and allows concurrent
read or write access to these data objects by many separate clients or application threads. You can use
the redundant data stored in Amazon S3 to recover quickly and reliably from instance or application failures.
Amazon EC2 uses Amazon S3 for storing Amazon Machine Images (AMIs). You use AMIs for launching
EC2 instances. In case of instance failure, you can use the stored AMI to immediately launch another
instance, thereby allowing for fast recovery and business continuity.
Amazon EC2 also uses Amazon S3 to store snapshots (backup copies) of the data volumes. You can
use snapshots for recovering data quickly and reliably in case of application or system failures. You can
also use snapshots as a baseline to create multiple new data volumes, expand the size of an existing
data volume, or move data volumes across multiple Availability Zones, thereby making your data usage
highly scalable. For more information about using data volumes and snapshots, see Amazon Elastic
Block Store (p. 355).
Objects are the fundamental entities stored in Amazon S3. Every object stored in Amazon S3 is contained
in a bucket. Buckets organize the Amazon S3 namespace at the highest level and identify the account
responsible for that storage. Amazon S3 buckets are similar to Internet domain names. Objects stored
in the buckets have a unique key value and are retrieved using a HTTP URL address. For example, if an
object with a key value /photos/mygarden.jpg is stored in the myawsbucket bucket, then it is addressable using the URL http://myawsbucket.s3.amazonaws.com/photos/mygarden.jpg.
For more information about the features of Amazon S3, see the Amazon S3 product page.
Amazon S3 and Amazon EC2
Given the benefits of Amazon S3 for storage, you may decide to use this service to store files and data
sets for use with EC2 instances. There are several ways to move data to and from Amazon S3 to your
instances. In addition to the examples discussed below, there are a variety of tools that people have
written that you can use to access your data in Amazon S3 from your computer or your instance. Some
of the common ones are discussed in the AWS forums.
If you have permission, you can copy a file to or from Amazon S3 and your instance using one of the
following methods.
GET or wget
The wget utility is an HTTP and FTP client that allows you to download public objects from Amazon S3.
It is available for download on Windows. To download an Amazon S3 object, use the following command,
substituting the URL of the object to download.
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wget http://s3.amazonaws.com/my_bucket/my_folder/my_file.ext
This method requires that the object you request is public; if the object is not public, you receive an ERROR
403: Forbidden message. If you receive this error, open the Amazon S3 console and change the
permissions of the object to public. For more information, see the Amazon Simple Storage Service Developer Guide.
AWS Command Line Interface
The AWS Command Line Interface (AWS CLI) is a unified tool to manage your AWS services. With just
one tool to download and configure, you can control multiple AWS services from the command line and
automate them through scripts. The AWS CLI allows users to authenticate themselves and download
restricted items from Amazon S3 and also to upload items. For more information, such as how to install
and configure the tools, see the AWS Command Line Interface detail page.
The aws s3 cp command is similar to the Unix cp command (the syntax is: aws s3 cp source destination). You can copy files from Amazon S3 to your instance, you can copy files from your instance to
Amazon S3, and you can even copy files from one Amazon S3 location to another.
Use the following command to copy an object from Amazon S3 to your instance.
C:\> aws s3 cp s3://my_bucket/my_folder/my_file.ext my_copied_file.ext
Use the following command to copy an object from your instance back into Amazon S3.
C:\> aws s3 cp my_copied_file.ext s3://my_bucket/my_folder/my_file.ext
Use the following command to copy an object from one Amazon S3 location to another.
C:\> aws s3 cp s3://my_bucket/my_folder/my_file.ext s3://my_buck
et/my_folder/my_file2.ext
The aws s3 sync command can synchronize an entire Amazon S3 bucket to a local directory location.
This can be helpful for downloading a data set and keeping the local copy up-to-date with the remote set.
The command syntax is: aws s3 sync source destination. If you have the proper permissions on
the Amazon S3 bucket, you can push your local directory back up to the cloud when you are finished by
reversing the source and destination locations in the command.
Use the following command to download an entire Amazon S3 bucket to a local directory on your instance.
C:\> aws s3 sync s3://remote_S3_bucket local_directory
AWS Tools for Windows PowerShell
Windows instances have the benefit of a graphical browser that you can use to access the Amazon S3
console directly; however, for scripting purposes, Windows users can also use the AWS Tools for Windows
PowerShell to move objects to and from Amazon S3.
Use the following command to copy an Amazon S3 object to your Windows instance.
PS C:\> Copy-S3Object -BucketName my_bucket -Key my_folder/my_file.ext -LocalFile
my_copied_file.ext
Amazon S3 API
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If you are a developer, you can use an API to access data in Amazon S3. For more information, see the
Amazon Simple Storage Service Developer Guide.You can use this API and its examples to help develop
your application and integrate it with other APIs and SDKs, such as the boto Python interface.
Block Device Mapping
Each Amazon EC2 instance that you launch has an associated root device volume, either an Amazon
Elastic Block Store (Amazon EBS) volume or an instance store volume.You can use block device mapping
to specify additional Amazon EBS volumes or instance store volumes to attach to an instance when it's
launched. You can also attach additional Amazon EBS volumes to a running instance; see Attaching an
Amazon EBS Volume to an Instance (p. 365). However, the only way to attach instance store volumes to
an instance is to use block device mapping to attach them as the instance is launched.
For more information about root device volumes, see Root Device Volume (p. 8).
Contents
• Block Device Mapping Concepts (p. 415)
• AMI Block Device Mapping (p. 418)
• Instance Block Device Mapping (p. 420)
Block Device Mapping Concepts
A block device is a storage device that moves data in sequences of bytes or bits (blocks). These devices
support random access and generally use buffered I/O. Examples include hard disks, CD-ROM drives,
and flash drives. A block device can be physically attached to a computer or accessed remotely as if it
were physically attached to the computer. Amazon EC2 supports two types of block devices:
• Instance store volumes (virtual devices whose underlying hardware is physically attached to the host
computer for the instance)
• Amazon EBS volumes (remote storage devices)
A block device mapping defines the block devices to be attached to an Amazon EC2 instance and the
device name to use. You can specify a block device mapping as part of creating an AMI so that the
mapping is used by all instances launched from the AMI. Alternatively, you can specify a block device
mapping when you launch an instance, so this mapping overrides the one specified in the AMI from which
you launched the instance.
There are two types of virtualization available in Amazon EC2: paravirtual (PV) and hardware virtual
machine (HVM). The virtualization type is determined by the AMI used to launch the instance; some instance types support both PV and HVM while others support only one or the other. Be sure to note the
virtualization type used by your AMI when you are creating your block device mapping because the recommended and available device names that you can use are different based on the virtualization type
of your instance.
Specifying a Block Device Mapping
Use a block device mapping to attach instance store volumes and Amazon EBS volumes to an EC2 instance.
When you create a block device mapping, you specify this information for each block device that you
need to attach to the instance:
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• The device name within Amazon EC2, as shown in this table. The block device driver for the instance
assigns the actual volume name when mounting the volume, and the name assigned can be different
from the name that Amazon EC2 recommends.
Xen Driver Type
Available
AWS PV, Citrix PV xvd[a-z]
Reserved for
Root
Used for Instance Recommended
Store Volumes
for EBS Volumes
/dev/sda1
xvd[a-e]
xvd[b-c][a-z]
xvd[f-z]
xvdc[a-x]
(hs1.8xlarge)
/dev/sda1
/dev/sd[b-e]
Red Hat PV
xvd[a-z]
/dev/sda1
xvd[b-c][a-z]
xvd[a-e]
xvd[f-p]
xvdc[a-x]
(hs1.8xlarge)
/dev/sda1
/dev/sd[b-e]
• [Instance store volumes only] The virtual device: ephemeral[0-3].
• [Amazon EBS volumes only] The ID of the snapshot to use to create the block device (snap-xxxxxxxx).
This value is optional as long as you specify a volume size.
• [Amazon EBS volumes only] The size of the volume, in GiB. The specified size must be greater than
or equal to the size of the specified snapshot.
• [Amazon EBS volumes only] Whether to delete the volume on instance termination (true or false).
The default value is true.
• [Amazon EBS volumes only] The volume type, which can be gp2 for General Purpose (SSD) volumes,
standard for Magnetic volumes or io1 for Provisioned IOPS (SSD) volumes. The default value is
standard for Magnetic volumes.
• [Amazon EBS volumes only] The number of input/output operations per second (IOPS) that the volume
supports. (Not used with General Purpose (SSD) or Magnetic volumes.)
Block Device Mapping Instance Store Caveats
There are several caveats to consider when launching instances with AMIs that have instance store
volumes in their block device mappings.
• Some instance types include more instance store volumes than others, and some instance types contain
no instance store volumes at all. If your instance type supports one instance store volume, and your
AMI has mappings for two instance store volumes, then the instance launches with one instance store
volume.
• Instance store volumes can only be mapped at launch time.You cannot stop an instance without instance
store volumes (such as the t2.micro), change the instance to a type that supports instance store
volumes, and then restart the instance with instance store volumes. However, you can create an AMI
from the instance and launch it on an instance type that supports instance store volumes, and map
those instance store volumes to the instance.
• If you launch an instance with instance store volumes mapped, and then stop the instance and change
it to an instance type with fewer instance store volumes and restart it, the instance store volume mappings
from the initial launch still show up in the instance metadata. However, only the maximum number of
supported instance store volumes for that instance type are available to the instance.
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Note
When an instance is stopped, all data on the instance store volumes is lost.
• Depending on instance store capacity at launch time, M3 instances may ignore AMI instance store
block device mappings at launch unless they are specified at launch.You should specify instance store
block device mappings at launch time, even if the AMI you are launching has the instance store volumes
mapped in the AMI, to ensure that the instance store volumes are available when the instance launches.
Example Block Device Mapping
This figure shows an example block device mapping for an Amazon EBS–backed instance. It maps
/dev/sdb to ephemeral0 and maps two Amazon EBS volumes, one to /dev/sdh and the other to
/dev/sdj. It also shows the Amazon EBS volume that is the root device volume, /dev/sda1.
Note that this example block device mapping is used in the example commands and APIs in this topic.
You can find example commands and APIs that create block device mappings here:
• Specifying a Block Device Mapping for an AMI (p. 418)
• Updating the Block Device Mapping when Launching an Instance (p. 421)
How Devices Are Made Available in the Operating System
Device names like /dev/sdh and xvdh are used by Amazon EC2 to describe block devices. The block
device mapping is used by Amazon EC2 to specify the block devices to attach to an EC2 instance. After
a block device is attached to an instance, it must be mounted by the operating system before you can
access the storage device. When a block device is detached from an instance, it is unmounted by the
operating system and you can no longer access the storage device.
With a Windows instance, the device names specified in the block device mapping are mapped to their
corresponding block devices when the instance first boots, and then the Ec2Config service initializes and
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mounts the drives. The root device volume is mounted as C:\. The instance store volumes are mounted
as D:\, E:\, and so on. When an Amazon EBS volume is mounted, it can be mounted using any available
drive letter. However, you can configure how the Ec2Config Service assigns drive letters to Amazon EBS
volumes; for more information, see Configuring a Windows Instance Using the EC2Config Service (p. 153).
Viewing Block Device Mappings
You can view information about each block device in a block device mapping. For details, see:
• Viewing the Amazon EBS Volumes in an AMI Block Device Mapping (p. 420)
• Viewing the Amazon EBS Volumes in an Instance Block Device Mapping (p. 423)
• Viewing the Instance Block Device Mapping for Instance Store Volumes (p. 424)
AMI Block Device Mapping
Each AMI has a block device mapping that specifies the block devices to attach to an instance when it
is launched from the AMI. An AMI that Amazon provides includes a root device only. To add more block
devices to an AMI, you must create your own AMI.
Contents
• Specifying a Block Device Mapping for an AMI (p. 418)
• Viewing the Amazon EBS Volumes in an AMI Block Device Mapping (p. 420)
Specifying a Block Device Mapping for an AMI
There are two ways to specify volumes in addition to the root volume when you create an AMI. If you've
already attached volumes to a running instance before you create an AMI from the instance, the block
device mapping for the AMI includes those same volumes. For Amazon EBS volumes, the existing data
is saved to a new snapshot, and it's this new snapshot that's specified in the block device mapping. For
instance store volumes, the data is not preserved.
For an Amazon EBS-backed AMI, you can add Amazon EBS volumes and instance store volumes using
a block device mapping. For an instance store-backed AMI, you can add only instance store volumes
using a block device mapping.
For M3 instances, you must specify instance store volumes in the block device mapping for the instance.
When you launch an M3 instance, we ignore any instance store volumes specified in the block device
mapping for the AMI.
To add volumes to an AMI using the console
1.
2.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
3.
4.
5.
Select an instance and select Create Image from the Actions list.
In the Create Image dialog box, click Add New Volume.
Select a volume type from the Type list and a device name from the Device list. For an Amazon
EBS volume, you can optionally specify a snapshot, volume size, and volume type.
Click Create Image.
6.
To add volumes to an AMI using the AWS CLI
Use the create-image command to specify a block device mapping for an Amazon EBS-backed AMI. Use
the register-image command to specify a block device mapping for an instance store-backed AMI.
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Specify the block device mapping using the following parameter:
--block-device-mappings [mapping, ...]
To add an instance store volume, use the following mapping:
{
"DeviceName": "xvdb",
"VirtualName": "ephemeral0"
}
To add an empty 100 GiB Magnetic volume, use the following mapping:
{
"DeviceName": "xvdg",
"Ebs": {
"VolumeSize": 100
}
}
To add an EBS volume based on a snapshot, use the following mapping:
{
"DeviceName": "xvdh",
"Ebs": {
"SnapshotId": "snap-xxxxxxxx"
}
}
To omit a mapping for a device, use the following mapping:
{
"DeviceName": "xvdj",
"NoDevice": ""
}
To add volumes to an AMI using the Amazon EC2 CLI
Use the ec2-create-image command to specify a block device mapping for an Amazon EBS-backed AMI.
Use the ec2-register command to specify a block device mapping for an instance store-backed AMI.
Specify the block device mapping using the following parameter:
-b "devicename=blockdevice"
devicename
The device name within Amazon EC2
blockdevice
To omit a mapping for the device from the AMI, specify none.
To add an instance store volume, specify ephemeral[0..3].
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To add an Amazon EBS volume to an Amazon EBS-backed instance, specify [snapshotid]:[size]:[delete-on-termination]:[type[:iops]]
• To add an empty volume, omit the snapshot ID and specify a volume size instead.
• To indicate whether the volume should be deleted on termination, specify true or false; the default
value is true.
• To create a Provisioned IOPS (SSD) volume, specify io1 and to create a General Purpose (SSD)
volume, specify gp2; the default type is standard for Magnetic volumes. If the type is io1, you
can also provision the number of IOPS the volume supports.
You can specify multiple block devices in a single command using multiple -b parameters. For example,
the following parameters add an instance store volume as xvdb, an Amazon EBS volume based on a
snapshot as xvdh, and an empty 100 GiB Amazon EBS volume as xvdj.
-b "xvdb=ephemeral0" -b "xvdh=snap-d5eb27ab" -b "xvdj=:100"
Viewing the Amazon EBS Volumes in an AMI Block Device
Mapping
You can easily enumerate the Amazon EBS volumes in the block device mapping for an AMI.
To view the Amazon EBS volumes for an AMI using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
In the navigation pane, click AMIs.
Select EBS images from the Filter drop-down list to get a list of Amazon EBS-backed AMIs.
Select the desired AMI, and look at the Details tab. At a minimum, the following information is
available for the root device:
• Root Device Type (ebs)
• Root Device Name (for example, /dev/sda1)
• Block Devices (for example, /dev/sda1=snap-e1eb279f:8:true)
If the AMI was created with additional Amazon EBS volumes using a block device mapping, the
Block Devices field displays the mapping for those additional volumes as well. (Recall that this
screen doesn't display instance store volumes.)
To view the Amazon EBS volumes for an AMI using the AWS CLI
Use the describe-images command to enumerate the Amazon EBS volumes in the block device mapping
for an AMI.
To view the Amazon EBS volumes for an AMI using the Amazon EC2 CLI
Use the ec2-describe-images command to enumerate the Amazon EBS volumes in the block device
mapping for an AMI.
Instance Block Device Mapping
By default, an instance that you launch includes any storage devices specified in the block device mapping
of the AMI from which you launched the instance. You can specify changes to the block device mapping
for an instance when you launch it, and these updates overwrite or merge with the block device mapping
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of the AMI. However, you can only modify the volume size, volume type, and Delete on Termination
flag on the block device mapping entry for the root device volume.
Contents
• Updating the Block Device Mapping when Launching an Instance (p. 421)
• Viewing the Amazon EBS Volumes in an Instance Block Device Mapping (p. 423)
• Viewing the Instance Block Device Mapping for Instance Store Volumes (p. 424)
Updating the Block Device Mapping when Launching an Instance
You can add Amazon EBS volumes and instance store volumes to an instance when you launch it. Note
that updating the block device mapping for an instance doesn't make a permanent change to the block
device mapping of the AMI from which it was launched.
To add volumes to an instance using the console
1.
2.
3.
4.
5.
Open the Amazon EC2 console.
From the Amazon EC2 console dashboard, click Launch Instance.
On the Choose an Amazon Machine Image (AMI) page, choose the AMI to use and click Select.
Follow the wizard to complete the Choose an Instance Type and Configure Instance Details
pages.
On the Add Storage page, you can modify the root volume, Amazon EBS volumes, and instance
store volumes as follows:
• To change the size of the root volume, locate the Root volume under the Type column, and change
its Size field.
• To suppress an Amazon EBS volume specified by the block device mapping of the AMI used to
launch the instance, locate the volume and click its Delete icon.
• To add an Amazon EBS volume, click Add New Volume, select EBS from the Type list, and fill
in the fields (Device, Snapshot, and so on).
• To suppress an instance store volume specified by the block device mapping of the AMI used to
launch the instance, locate the volume, and click its Delete icon.
• To add an instance store volume, click Add New Volume, select Instance Store from the Type
list, and select a device name from Device.
6.
Complete the remaining wizard pages, and then click Launch.
To add volumes to an instance using the AWS CLI
Use the run-instances command to specify a block device mapping for an instance.
Specify the block device mapping using the following parameter:
--block-device-mappings [mapping, ...]
For example, suppose that an Amazon EBS-backed AMI specifies the following block device mapping:
• xvdb=ephemeral0
• xvdh=snap-92d333fb
• xvdj=:100
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To prevent xvdj from attaching to an instance launched from this AMI, use the following mapping:
{
"DeviceName": "xvdj",
"NoDevice": ""
}
To increase the size of xvdh to 300 GiB, specify the following mapping. Notice that you don't need to
specify the snapshot ID for xvdh, because specifying the device name is enough to identify the volume.
{
"DeviceName": "xvdh",
"Ebs": {
"VolumeSize": 300
}
}
To attach an additional instance store volume, xvdc, specify the following mapping. If the instance type
doesn't support multiple instance store volumes, this mapping has no effect.
{
"DeviceName": "xvdc",
"VirtualName": "ephemeral1"
}
To add volumes to an instance using the Amazon EC2 CLI
Use the ec2-run-instances command to specify a block device mapping for an instance.
Specify the block device mapping using the following parameter:
-b "devicename=blockdevice"
devicename
The device name within Amazon EC2
blockdevice
To omit a mapping for the device from the AMI, specify none.
To add an instance store volume, specify ephemeral[0..3].
To add an Amazon EBS volume to an EBS-backed instance, specify [snapshot-id]:[size]:[delete-ontermination]:[type[:iops]].
• To add an empty Amazon EBS volume, omit the snapshot ID and specify a volume size instead.
• To indicate whether the Amazon EBS volume is deleted on termination, specify true or false;
the default value is true.
• To create a Provisioned IOPS (SSD) volume, specify io1 and to create a General Purpose (SSD)
volume, specify gp2; the default type is standard for Magnetic volumes. If the type is io1, you
can also provision the number of IOPS the volume supports.
For example, suppose that an EBS-backed AMI specifies the following block device mapping:
• xvdb=ephemeral0
• xvdh=snap-92d333fb
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• xvdj=:100
To prevent xvdj from attaching to an instance launched from this AMI, use the following option:
–b "xvdj=none"
To increase the size of xvdh to 300 GiB, use the following option:
–b "xvdh=:300"
Notice that you didn't need to specify the snapshot ID for xvdh, because specifying the device name is
enough to identify the volume.
To attach an additional instance store volume, xvdc, use the following option. If the instance type doesn't
support multiple instance store volumes, this option has no effect.
–b "xvdc=ephemeral1"
Viewing the Amazon EBS Volumes in an Instance Block
Device Mapping
You can easily enumerate the Amazon EBS volumes mapped to an instance.
Note
For instances launched before the release of the 2009-10-31 API, AWS can't display the block
device mapping. You must detach and reattach the volumes so that AWS can display the block
device mapping.
To view the Amazon EBS volumes for an instance using the console
1.
2.
3.
4.
Open the Amazon EC2 console.
In the navigation pane, click Instances.
Select EBS root device from the Filter list. This displays a list of Amazon EBS–backed instances.
Locate and click the desired instance and look at the details displayed in the Description tab. At a
minimum, the following information is available for the root device:
• Root device type (ebs)
• Root device (for example, /dev/sda1)
• Block devices (for example, /dev/sda1, xvdh, and xvdj)
If the instance was launched with additional Amazon EBS volumes using a block device mapping,
the Block devices box displays those additional volumes as well as the root device. (Recall that this
dialog box doesn't display instance store volumes.)
5.
To display additional information about a block device, click its entry next to Block devices. This
displays the following information for the block device:
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• EBS ID (vol-xxxxxxxx)
• Root device type (ebs)
• Attachment time (yyyy-mmThh:mm:ss.ssTZD)
• Block device status (attaching, attached, detaching, detached)
• Delete on termination (Yes, No)
To view the Amazon EBS volumes for an instance using the AWS CLI
Use the describe-instances command to enumerate the Amazon EBS volumes in the block device mapping
for an instance.
To view the Amazon EBS volumes for an instance using the Amazon EC2 CLI
Use the ec2-describe-instances command to enumerate the Amazon EBS volumes in the block device
mapping for an instance.
Viewing the Instance Block Device Mapping for Instance
Store Volumes
When you view the block device mapping for your instance, you can see only the Amazon EBS volumes,
not the instance store volumes. You can use instance metadata to query the complete block device
mapping. The base URI for all requests for instance metadata is http://169.254.169.254/latest/.
First, connect to your running instance. For Windows instances, install wget on the instance if it is not
installed already.
Use this query on a running instance to get its block device mapping.
C:\> wget http://169.254.169.254/latest/meta-data/block-device-mapping/
The response includes the names of the block devices for the instance. For example, the output for an
instance store–backed m1.small instance looks like this.
ami
ephemeral0
root
swap
The ami device is the root device as seen by the instance. The instance store volumes are named ephemeral[0-3]. The swap device is for the page file. If you've also mapped EBS volumes, they appear
as ebs1, ebs2, and so on.
To get details about an individual block device in the block device mapping, append its name to the previous query, as shown here.
C:\> wget http://169.254.169.254/latest/meta-data/block-device-mapping/ephemeral0
For more information, see Instance Metadata and User Data (p. 101).
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Using Public Data Sets
Using Public Data Sets
Amazon Web Services provides a repository of public data sets that can be seamlessly integrated into
AWS cloud-based applications. Amazon stores the data sets at no charge to the community and, as with
all AWS services, you pay only for the compute and storage you use for your own applications.
Contents
• Public Data Set Concepts (p. 425)
• Finding Public Data Sets (p. 425)
• Creating a Public Data Set Volume from a Snapshot (p. 426)
• Attaching and Mounting the Public Data Set Volume (p. 427)
Public Data Set Concepts
Previously, large data sets such as the mapping of the Human Genome and the US Census data required
hours or days to locate, download, customize, and analyze. Now, anyone can access these data sets
from an Amazon EC2 instance and start computing on the data within minutes. You can also leverage
the entire AWS ecosystem and easily collaborate with other AWS users. For example, you can produce
or use prebuilt server images with tools and applications to analyze the data sets. By hosting this important
and useful data with cost-efficient services such as Amazon EC2, AWS hopes to provide researchers
across a variety of disciplines and industries with tools to enable more innovation, more quickly.
For more information, go to the Public Data Sets on AWS Page.
Available Public Data Sets
Public data sets are currently available in the following categories:
•
•
•
•
Biology—Includes Human Genome Project, GenBank, and other content.
Chemistry—Includes multiple versions of PubChem and other content.
Economics—Includes census data, labor statistics, transportation statistics, and other content.
Encyclopedic—Includes Wikipedia content from multiple sources and other content.
Finding Public Data Sets
Before you can use a public data set, you must locate the data set and determine which format the data
set is hosted in. The data sets are available in two possible formats: Amazon EBS snapshots or Amazon
S3 buckets.
To find a public data set and determine its format
1.
2.
3.
Go to the Public Data Sets Page to see a listing of all available public data sets. You can also enter
a search phrase on this page to query the available public data set listings.
Click the name of a data set to see its detail page.
On the data set detail page, look for a snapshot ID listing to identify an Amazon EBS formatted data
set or an Amazon S3 URL.
Data sets that are in Amazon EBS snapshot format are used to create new Amazon EBS volumes that
you attach to an Amazon EC2 instance. For more information, see Creating a Public Data Set Volume
from a Snapshot (p. 426).
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For data sets that are in Amazon S3 format, you can use the AWS SDKs or the HTTP query API to access
the information, or you can use the AWS CLI to copy or synchronize the data to and from your instance.
For more information, see Amazon S3 and Amazon EC2 (p. 413).
You can also use Amazon Elastic MapReduce to analyze and work with public data sets. For more information, see What is Amazon EMR?.
Creating a Public Data Set Volume from a Snapshot
To use a public data set that is in Amazon EBS snapshot format, you create a new volume, specifying
the snapshot ID of the public data set. You can create your new volume using the AWS Management
Console as follows. If you prefer, you can use the ec2-create-volume command instead.
To create a public data set volume from a snapshot
1.
2.
Open the Amazon EC2 console.
From the navigation bar, select the region that your data set snapshot is located in.
Important
3.
4.
5.
6.
Snapshot IDs are constrained to a single region, and you cannot create a volume from a
snapshot that is located in another region. In addition, you can only attach an Amazon EBS
volume to an instance in the same Availability Zone. For more information, see Resource
Locations (p. 428).
If you need to create this volume in a different region, you can copy the snapshot to your required
region and then restore it to a volume in that region. For more information, see Copying an Amazon
EBS Snapshot (p. 388).
In the navigation pane, click Volumes.
Above the upper pane, click Create Volume.
In the Create Volume dialog box, in the Type list, select General Purpose (SSD), Provisioned
IOPS (SSD), or Magnetic. For more information, see Amazon EBS Volume Types (p. 359).
In the Snapshot field, start typing the ID or description of the snapshot for your data set. Select the
snapshot from the list of suggested options.
Note
If the snapshot ID you are expecting to see does not appear, you may have a different region
selected in the Amazon EC2 console. If the data set you identified in Finding Public Data
Sets (p. 425) does not specify a region on its detail page, it is likely contained in the us-east1 (N. Virginia) region.
7.
In the Size field, enter the size of the volume (in GiB or TiB), or verify the that the default size of the
snapshot is adequate.
Note
If you specify both a volume size and a snapshot ID, the size must be equal to or greater
than the snapshot size. When you select a volume type and a snapshot ID, minimum and
maximum sizes for the volume are shown next to the Size list.
8.
9.
For Provisioned IOPS (SSD) volumes, in the IOPS field, enter the maximum number of input/output
operations per second (IOPS) that the volume can support.
In the Availability Zone list, select the Availability Zone in which to launch the instance.
Important
Amazon EBS volumes can only be attached to instances in the same Availability Zone.
10. Click Yes, Create.
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Important
If you created a larger volume than the default size for that snapshot (by specifying a size
in Step 7 (p. 426)), you need to extend the file system on the volume to take advantage of
the extra space. For more information, see Expanding the Storage Space of a Volume (p. 380).
Attaching and Mounting the Public Data Set
Volume
After you have created your new data set volume, you need to attach it to an Amazon EC2 instance to
access the data (this instance must also be in the same Availability Zone as the new volume). For more
information, see Attaching an Amazon EBS Volume to an Instance (p. 365).
After you have attached the volume to an instance, you need to mount the volume on the instance. For
more information, see Making an Amazon EBS Volume Available for Use (p. 367).
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Resource Locations
Resources and Tags
Amazon EC2 enables you to manage your Amazon EC2 resources, such as images, instances, volumes,
and snapshots. For more information, see the following documentation.
Topics
• Resource Locations (p. 428)
• Listing and Filtering Your Resources (p. 429)
• Tagging Your Amazon EC2 Resources (p. 433)
• Amazon EC2 Service Limits (p. 440)
• Amazon EC2 Usage Reports (p. 442)
Resource Locations
The following table describes which Amazon EC2 resources are global, regional, or based on Availability
Zone.
Resource
Type
Description
AWS Account
Global
You can use the same AWS account in all regions.
Key Pairs
Global or
Regional
You can use the key pairs that you create using Amazon
EC2 only in the region where you created them. You
can create and upload an RSA key pair that you can use
in all regions.
For more information, see Amazon EC2 Key
Pairs (p. 264).
Amazon EC2 Resource
Identifiers
Regional
Each resource identifier, such as an AMI ID, instance
ID, EBS volume ID, or EBS snapshot ID, is tied to its
region and can be used only in the region where you
created the resource.
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Resource
Type
Description
User-Supplied Resource
Names
Regional
Each resource name, such as a security group name or
key pair name, is tied to its region and can be used only
in the region where you created the resource. Although
you can create resources with the same name in multiple
regions, they aren't related to each other.
AMIs
Regional
An AMI is tied to the region where its files are located
within Amazon S3.You can copy an AMI from one region
to another. For more information, see Copying an
AMI (p. 68).
Elastic IP Addresses
Regional
An Elastic IP address is tied to a region and can be
associated only with an instance in the same region.
Security Groups
Regional
A security group is tied to a region and can be assigned
only to instances in the same region. You can't enable
an instance to communicate with an instance outside its
region using security group rules. Traffic from an
instance in another region is seen as WAN bandwidth.
EBS Snapshots
Regional
An EBS snapshot is tied to its region and can only be
used to create volumes in the same region. You can
copy a snapshot from one region to another. For more
information, see Copying an Amazon EBS
Snapshot (p. 388).
EBS Volumes
Availability Zone
An Amazon EBS volume is tied to its Availability Zone
and can be attached only to instances in the same
Availability Zone.
Instances
Availability Zone
An instance is tied to the Availability Zones in which you
launched it. However, note that its instance ID is tied to
the region.
Listing and Filtering Your Resources
Amazon EC2 provides different resources that you can use. These resources include images, instances,
volumes, and snapshots. You can get a list of some types of resource using the Amazon EC2 console.
You can get a list of each type of resource using its corresponding command or API action. If you have
many resources, you can filter the results to include only the resources that match certain criteria.
Topics
• Advanced Search (p. 430)
• Listing Resources Using the Console (p. 431)
• Filtering Resources Using the Console (p. 431)
• Listing and Filtering Using the CLI and API (p. 432)
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Advanced Search
Advanced Search
Advanced search allows you to search using a combination of filters to achieve precise results. You can
filter by keywords, user-defined tag keys, and predefined resource attributes. Advanced search is currently
offered for the following resources:
• Instances
• Volumes
• Snapshots
• Elastic IP addresses
• Key pairs
The specific search types available are:
• Search by keyword
To search by keyword, type or paste what you’re looking for in the search box, and then press Enter.
For example, to search for a specific instance, you can type the instance ID.
• Search by fields
You can also search by fields, tags, and attributes associated with a resource. For example, to find all
instances in the stopped state:
1. In the search box, start typing Instance State. As you type, you'll see a list of suggested fields.
2. Select Instance State from the list.
3. Select Stopped from the list of suggested values.
4. To further refine your list, click the search box for more search options.
• Advanced search
You can create advanced queries by adding multiple filters. For example, you can search by tags and
see instances for the Flying Mountain project running in the Production stack, and then search by attributes to see all t2.micro instances, or all instances in us-west-2a, or both.
• Inverse search
You can search for resources that do not match a specified value. For example, to list all instances
that are not terminated, search by the Instance State field, and prefix the Terminated value with an
exclamation mark (!).
• Partial search
When searching by field, you can also enter a partial string to find all resources that contain the string
in that field. For example, search by Instance Type, and then type t2 to find all t2.micro, t2.small or
t2.medium instances.
• Regular expression
Regular expressions are useful when you need to match the values in a field with a specific pattern.
For example, search by the Name tag, and then type ^s.* to see all instances with a Name tag that
start with an 's'.
After you have the precise results of your search, you can bookmark the URL for easy reference. In
situations where you have thousands of instances, filters and bookmarks can save you a great deal of
time; you don’t have to run searches repeatedly.
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Listing Resources Using the Console
Listing Resources Using the Console
You can view the most common Amazon EC2 resource types using the console. To view additional resources, use the command line interface or the API actions.
To list EC2 resources using the console
1.
Open the Amazon EC2 console.
2.
In the navigation pane, click the option that corresponds to the resource, such as AMIs or Instances.
3.
The page displays all the available resources.
Filtering Resources Using the Console
You can perform filtering and sorting of the most common resource types using the Amazon EC2 console.
For example, you can use the search bar on the instances page to sort instances by tags, attributes, or
keywords.
You can also use the search field on each page to find resources with specific attributes or values. You
can use regular expressions to search on partial or multiple strings. For example, to find all instances
that are using the MySG security group, enter MySG in the search field. The results will include any values
that contain MySG as a part of the string, such as MySG2 and MySG3. To limit your results to MySG only,
enter \bMySG\b in the search field. To list all the instances whose type is either m1.small or m1.large,
enter m1.small|m1.large in the search field.
Note
Not all of the screens provide the same search functionality.
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Listing and Filtering Using the CLI and API
To list volumes in the us-east-1b Availability Zone with a status of available
1.
In the navigation pane, click Volumes.
2.
Click on the search box, select Attachment Status from the menu, and then select Detached. (A
detached volume is available to be attached to an instance in the same Availability Zone.)
3.
Click on the search box again, select State, and then select Available.
4.
Click on the search box again, select Availability Zone, and then select us-east-1b.
5.
Any volumes that meet this criteria are displayed.
To list public 64-bit Windows AMIs backed by Amazon EBS
1.
In the navigation pane, click AMIs.
2.
In the Filter pane, select Public images, EBS images, and then Windows from the Filter lists.
3.
Enter x86_64 in the search field.
4.
Any AMIs that meet this criteria are displayed.
Listing and Filtering Using the CLI and API
Each resource type has a corresponding CLI command or API request that you use to list resources of
that type. For example, you can list Amazon Machine Images (AMI) using ec2-describe-images or
DescribeImages. The response contains information for all your resources.
The resulting lists of resources can be long, so you might want to filter the results to include only the resources that match certain criteria.You can specify multiple filter values, and you can also specify multiple
filters. For example, you can list all the instances whose type is either m1.small or m1.large, and that
have an attached EBS volume that is set to delete when the instance terminates. The instance must
match all your filters to be included in the results.
You can also use wildcards with the filter values. An asterisk (*) matches zero or more characters, and
a question mark (?) matches exactly one character. For example, you can use *database* as a filter
value to get all EBS snapshots that include database in the description. If you were to specify database
as the filter value, then only snapshots whose description equals database would be returned. Filter
values are case sensitive. We support only exact string matching, or substring matching (with wildcards).
Tip
Your search can include the literal values of the wildcard characters; you just need to escape
them with a backslash before the character. For example, a value of \*amazon\?\\ searches
for the literal string *amazon?\.
For a list of supported filters per Amazon EC2 resource, see the relevant documentation:
• For the AWS CLI, see the relevant describe command in the AWS Command Line Interface Reference.
• For the Amazon EC2 CLI, see the relevant ec2-describe command in the Amazon EC2 Command
Line Reference.
• For Windows PowerShell, see the relevant Get command in the AWS Tools for Windows PowerShell
Reference.
• For the