Variables

Variable is Grafana feature to create interactive and dynamic dashboards also known as Templating. Refer Grafana Documentation for more information.

This plugin supports to use PV names registered in Archiver Appliance for variables.

Adding a Variable

You can add a variable by following steps.

1. Open Dashboard settings from top header.

2. Select Variables from side menu.

3. Click Add variable.

4. Configure variable settings. Refer Variable Settings

5. Click Add.

Variable Settings

Query format is explained in this documentation. See Grafana Documentation for other settings.

You can use regular expression pattern same as Query Edit. Only wildcard pattern and alternation pattern are available.

You can also use another variable as a part of query. For example, you have variable group, which is a list of PV name prefixes according to PV naming rules on your institute.

Below is a query in this case.

${group}:.*

Note

Default maximum number of PV names you can use in variables is 100.

Limit parameter is available to change maxmum number. Parameters must be follow ? character.

PV:NAME:.*?limit=1000

Variables Usage

Variables is allowed to use in each field and Functions parameter except for alias pattern field.

You can select multiple PVs from drop down menu with variables.