Introduction to Dashboards. Dell Vizioncore

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Introduction to Dashboards. Dell Vizioncore | Manualzz

50 vFoglight

User Guide

Introduction to Dashboards

vFoglight displays monitoring data in views that group, format, and display it.

Dashboards are top-level views that do not need to receive data from other views.

Dashboards usually contain a number of lower-level views. The dashboards supplied with vFoglight, as well as those created by users, are available in the navigation panel.

Lower-level views in vFoglight can be added to dashboards or can be accessed by drilling down from a dashboard. They receive and display data directly from the vFoglight Management Server or from other views. Some views filter or select data that appears in other views in the same dashboard. Some are tree views with expandable nodes for selecting servers, applications, or data.

Display Functions

vFoglight provides various ways in which you can modify a view or display the data in a different format. For example, you can select metrics, select a data object to update a view, or change the time range. These functions are available as drop-down lists or table filters, in dialogs, or through menus.

This section describes the following functions that you can use to modify a view:

“ Tooltips, Dwells, and Popups ” on page 50

“ Time Range ” on page 51

“ Splitter ” on page 56

“ Columns ” on page 56

“ Drop-Down Lists and Trees ” on page 56

Tooltips, Dwells, and Popups

Different types of smaller views provide additional detail about an element in a view.

Examples of these views are:

• A tooltip element describes what it represents when you hold the cursor over a status icon. Tooltips also appear when you hold the cursor over a line in a chart.

• A dwell displays additional information about the item when you hold your cursor over a line in a table.

• A popup displays additional information and options if you click a line in a table.

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Introduction to Dashboards

51

Tooltips and dwells disappear when you move the mouse, but a popup remains open until you close it by clicking outside it or clicking the close icon in the corner. You can also maximize some popups by clicking the maximize icon in the upper right corner.

Figure 1

Time Range

The time range at the top of a dashboard indicates the current time range for all the views on the page. If some of the views have independent time ranges, the time range is not displayed.

By default, the time range in a dashboard is displayed in real time. You can “freeze” the time range so that the views are fixed at a certain range. This is helpful for diagnostic purposes when you do not want to receive new data. For further details, refer to

“ Freezing a time range ” on page 52.

Changing the time range in a dashboard affects all the views in the dashboard. If an individual view in a dashboard has a different time range, that takes precedence over the time range for the dashboard.

Clicking the time range opens a menu where you can select another time range or select

Custom to specify a range.

Standard Time Ranges

The time range menu lists the standard ranges. When you select one of these options, all the views in the dashboard are automatically updated, unless they were created with a time range other than the global one.

Custom Time Ranges

To set a specific time range, you select Custom from the time range menu to open the

Custom Time Range dialog. Initially, only the Zonar is displayed. Clicking the down-

52 vFoglight

User Guide arrow beside Precision Control expands the dialog to display the Precision Control options. Clicking the browse button to the right of the date fields displays the calendars.

Figure 2

The Precision Control section contains the following settings:

From and To date and time fields (see page 55

)

• Earliest Available and Current Date check boxes (see

page 55 )

Calendars (see page 55

)

Granularity options (see page 55 )

Except for granularity, changing any of these settings automatically updates the views.

The time range for a summary view is likely to be different from the time range for a detail view. Therefore, the time range that you select affects only the current view and drill-downs from it; it does not affect higher-level views.

Freezing a time range

By default, the time range on a dashboard is displayed in real time. You can tell this ata-glance if the word Now is shown in the time range display.

Image 3

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Introduction to Dashboards

53

You can disconnect from real time and “freeze” a dashboard at a specified time range.

When this occurs, the views on the dashboard will not receive any new data.

To freeze a time range:

1

2

Select the dashboard for which you want to freeze the time range.

Click the icon to the left of the displayed time range at the top right of the dashboard.

Tip When you hover over the icon a popup indicates if the time range is real time or frozen:

The time range is set and the icon changes to .

Hover over the icon to display the message: Time range is in the past, click to switch to real time .

3 If you later refresh a dashboard, you may notice that the time range remains fixed even though the time that is displayed in the Zonar changes. For example, in the screen shot below, the time range ends at 9:50 while the current time is 10:12.

To unfreeze a time range:

• Click the icon.

The time range changes to end at the last monitoring time range that you used (for example, the last four hours).

Diagnostic Time Range

In vFoglight versions 3.0, if you drilled down the path for an old alarm, all of the drilldowns applied to the current time, not the time that the alarm occurred. In versions

3.0.1 (or later), the time-sync function called the diagnostic time range was added to drill-downs.

The diagnostic time range shows a 4 hour window, where the alarm time range is placed

3 hours into the window (e.g. 3 hours prior and one hour past the alarm). The diagnostic time range stays frozen until you unfreeze (toggle) the time range.

54 vFoglight

User Guide

The diagnostic time range function works as follows:

• For any alarm that is not in the current time range, if you click on a drill down, places you into a diagnostic time range.

• Some drill-downs indicate that you are in diagnostic time range as shown in the dialog box below.

Note The diagnostic time range function is not available for all drill-downs.

Zonar

At the top of the dialog is a sliding bar called the Zonar. When you place your mouse over the bar, a popup displays the current date, time, and time range.

Figure 4

Click in the middle of the range to drag the Zonar to the left or the right. The start and end times of the range changes, but keeps the same time period. You can increase or decrease the time period by dragging the sides of the range. As you drag, the popup displays the new range.

As you drag the edges of the range, the Zonar scale automatically adjusts, increasing or decreasing the units of time. For example, in the above screen shot, the time range is four hours. If you drag the left edge of the range as far as you can, the range increases by about eight hours. When you stop dragging, the scale automatically adjusts and you can then drag the edge further.

If you drag the right edge of the range when the time range is in real time (the word Now is shown in the time range display), the range will persist for the duration (for example,

4.5 hours) and not to the specific date/time to which it was set.

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55

Precision Control

The Precision Control section is collapsed when the dialog opens. To display it, click the down arrow to the right of Precision Control .

Date and Time Fields

Type specific dates and times for the range. If you enter an incorrect date or time, a red exclamation mark is displayed at the right of the field and you cannot apply the changes.

You can also use the Earliest Available or Current Date check box to set the time range.

Calendars

If you prefer to use a calendar to select dates, click the browse button to the right of the date and time fields to display start-date and end-date calendars.

Granularity

Granularity controls the size of the metric intervals. The default option is Raw, which displays the actual collected data points. The Auto option uses intervals that are sized according to the time range. For example, a one-hour range has five-minute intervals, while a one-week range has one-hour intervals. If you choose an option other than the default, click Apply to update the views.

Caution If you set too large an interval, there may not be enough points to plot on a chart. For example, if you only have one day of data, an interval of six months will result in a single point. If an interval is too small, there may be too many data points to display if the chart is small.

The maximum and minimum values of a metric are actual numbers, while data points inside an interval are averaged. Agents may report their data at uneven intervals. vFoglight sets the data to be plotted in evenly-spaced intervals using data collected from any number of agents.

To do this, the data points inside the interval are averaged. This has the effect of evening out the maximum and minimum values if an interval contains more than one real data point. The maximum and minimum values of a metric are based on real data and not an averaged value. These values are often plotted as markers on the chart. Therefore the averaged values on the plotted curve or bar may not match the real values of the markers.

56 vFoglight

User Guide

Splitter

Composite views may have a moveable bar, or splitter, between the two views. It can be either horizontal or vertical. You can move it back and forth to resize the views on either side.

Figure 5

The splitter has two arrows facing in opposite directions. When you click an arrow, the view it is facing collapses, the splitter moves to the edge of the remaining view, and only the other arrow is visible. You can restore the hidden view by clicking the other arrow.

Columns

When you are creating a custom dashboard or report, you can choose one of the options under Columns under the General tab in the action panel to divide the display area into one, two, or three columns.

Figure 6

Drop-Down Lists and Trees

Drop-down lists are views that change the context of other views, such as those in the same container view. When you select an item from a drop-down list, the view is refreshed with new data. For example, a view may contain a drop-down list of metrics, a chart, and a table. Selecting a different metric changes the context of the page, and the chart and table are updated accordingly.

A drop-down list displays a list of single options. A tree expands to display a hierarchy of options. They have the same effect on the context.

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57

Customizer

The Customizer icon is available for charts and tables.

Note To access the customizer it needs to be enabled. Customizers are not enabled by default.

If the Customizer icon is enabled you can:

Change the chart type dynamically. See “ Changing the Chart Type ” on page 81.

• Export charts and tables to PDF or CSV format. See

Exporting Data from Charts and Tables .

Exporting Data from Charts and Tables

The option to export data to CSV and PDF format is available for charts and tables.

For example, you can create new graphs using drag and drop metrics onto a dashboard, and then export the data to CSV output. Therefore, you can create multiple metrics, set a time range, export to CSV, and then open the data in Excel.

To export charts to CSV or PDF format:

1

2

1 Navigate to the chart or table you want to export.

Click the Customizer icon in the top right hand corner of the table or chart.

Choose either Export as CSV or Export as PDF .

3 If you chose Export as CSV , choose if you want to open or save the file.

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