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38 vFoglight

Web Component Tutorial

the data source information about all the hosts in our monitored system. To accomplish

this task, it is helpful to understand something about Data Source Types, Data Source

IDs, Object Types, and paths in the data object graph.

Note There are other parameters that may be used with a query, such as Aggregations, filtering

the top

N results, order by, and the familiar where clause. These parameters aren’t needed

for the simple query we are constructing as our first example, so we will not discuss them

here.

Before you start the tutorial, choose the appropriate user name in the User Views section

of the Module List Pane. You will probably choose the node that corresponds to your

user. You should make adjustments to the instructions to correspond to the node you are

using.

To build a query:

Select the Queries tab in the Module Contents pane and then click Add ().

The New Query dialog appears.

Ensure that Blank Query is chosen and set the Data Source Type to vFoglight.

Click OK.

The Definitions pane displays the query editor, which contains all the fields used

to construct a query. You don’t have to fill in every field, but those you do are

marked by an exclamation point icon on the right side of the field.

Type Active Hosts in the Name field.

You will use this name later on to refer to the query.

Leave Root Query unchecked.

Labeling a query as a root query causes the query to appear as a choice both in the

Data tab of the Action Panel when one of your user dashboards is selected and in

the Data menu choice under

Dashboards > Configuration > Data in the

Navigation Panel. You can browse the data structure returned by the query if you

label it as a root query.

Leave Public unchecked.

Labeling a query as public allows it to be used in other modules. Since the tutorial

is not meant to extend vFoglight’s functionality, your queries and views do not

need to be used in other modules.

Ensure that Deprecated is unchecked.

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