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* Update index.md Fixed the link for a grafana play reference * fix link text * fix wording for flow --------- Co-authored-by: Isabel <76437239+imatwawana@users.noreply.github.com>
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Dashboard URL variables | 250 |
Dashboard URL variables
Grafana can apply variable values passed as query parameters in dashboard URLs. For more information, refer to [Manage dashboard links]({{< relref "../manage-dashboard-links/" >}}) and [Templates and variables]({{< relref "../../variables/" >}}).
Passing variables as query parameters
Grafana interprets query string parameters prefixed with var- as variables in the given dashboard.
For example, in this URL:
https://${your-domain}/path/to/your/dashboard?var-example=value
The query parameter var-example=value represents the dashboard variable example with a value of value.
Passing multiple values for a variable
To pass multiple values, repeat the variable parameter once for each value:
https://${your-domain}/path/to/your/dashboard?var-example=value1&var-example=value2
Grafana interprets var-example=value1&var-example=value2 as the dashboard variable example with two values: value1 and value2.
Example
This example in Grafana Play passes the variable server with multiple values, and the variables app and interval with a single value each.
Adding variables to dashboard links
Grafana can add variables to dashboard links when you generate them from a dashboard's settings. For more information and steps to add variables, refer to [Manage dashboard links]({{< relref "../manage-dashboard-links/" >}}).
Passing ad hoc filters
Ad hoc filters apply key/value filters to all metric queries that use a specified data source. For more information, refer to [Add ad hoc filters]({{< relref "../../variables/add-template-variables/#add-ad-hoc-filters" >}}).
To pass an ad hoc filter as a query parameter, use the variable syntax to pass the ad hoc filter variable, and also provide the key, the operator as the value, and the value as a pipe-separated list.
For example, in this URL:
https://${your-domain}/path/to/your/dashboard?var-adhoc=example_key|=|example_value
The query parameter var-adhoc=key|=|value applies the ad hoc filter configured as the adhoc dashboard variable using the example_key key, the = operator, and the example_value value.
{{% admonition type="note" %}}
When sharing URLs with ad hoc filters, remember to encode the URL. In the above example, replace the pipes (|) with %7C and the equality operator (=) with %3D.
{{% /admonition %}}
Example
This example in Grafana Play passes the ad hoc filter variable adhoc with the filter value datacenter = America.
Controlling time range using the URL
To set a dashboard's time range, use the from, to, time, and time.window query parameters. Because these are not variables, they do not require the var- prefix. For more information, see the [Linking overview]({{< relref "../" >}}).