Grafana variables

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Rate your experience required. Comments required. The variables page lets you easily identify whether a variable is being referenced or used in other variables or dashboard. In addition, you can also add and manage variables on this page. Any variable that is referenced or used has a green check mark next to it, while unreferenced variables have a orange caution icon next to them.

Grafana variables

Rate your experience required. Comments required. Navigate to the dashboard you want to make a variable for and click the Dashboard settings gear icon at the top of the page. Query variables enable you to write a data source query that can return a list of metric names, tag values, or keys. For example, a query variable might return a list of server names, sensor IDs, or data centers. The variable values change as they dynamically fetch options with a data source query. Query variables are generally only supported for strings. If your query returns numbers or any other data type, you might need to convert them to strings in order to use them as variables. For the Azure data source, for example, you can use the tostring function for this purpose. Query expressions can contain references to other variables and in effect create linked variables. Grafana detects this and automatically refreshes a variable when one of its linked variables change. Note: Query expressions are different for each data source. For more information, refer to the documentation for your data source. For example, if you have server names or region names that never change, then you might want to create them as custom variables rather than query variables.

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Rate your experience required. Comments required. Instead of hard-coding details such as server, application, and sensor names in metric queries, you can use variables. Grafana lists these variables in dropdown select boxes at the top of the dashboard to help you change the data displayed in your dashboard. Grafana refers to such variables as template variables. For an introduction to templating and template variables, refer to the Templating and Add and manage variables documentation.

After a brief acquaintance with Grafana in sandboxes, production application developers come to the need to work with variables serving different architectural levels. This article outlines three logical levels with corresponding variables and their purposes. Dashboard variables serve the analytical dashboards, and global Grafana variables rule in the Grafana instance. Environment variables help in configuring system processes where Grafana is installed. As the name implies, they are created for a dashboard.

Grafana variables

Rate your experience required. Comments required. Server-side expressions enable you to manipulate data returned from queries with math and other operations. Expressions create new data and do not manipulate the data returned by data sources. Server-side expressions allow you to manipulate data returned from queries with math and other operations. Expressions create new data and do not manipulate the data returned by data sources, aside from some minor data restructuring to make the data acceptable input for expressions. Expressions are most commonly used for Grafana Alerting.

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Troubleshooting Send panel to support. Integrate Grafana with Hashicorp Vault. Administration Back up Grafana. Comments required. Contact us. Dashboards Use dashboards. Grafana OnCall. Grafana Application Observability. View and filter by alert groups. Grafana Docker image. Alert instances.

This documentation topic is designed for Grafana workspaces that support Grafana version 9. For Grafana workspaces that support Grafana version 8.

Declare incidents from firing alerts. Export logs of usage insights. Use correlations in visualizations. Configure feature toggles. Grafana Cloud Enterprise Open source. Grant editors administrator permissions. Query editor. Grafana Tempo. Annotate visualizations. This variable is only available in the Singlestat panel and can be used in the prefix or suffix fields on the Options tab. Panel editor overview.