Global variables: Built-in variables that Grafana provides automatically, such as the current time range, dashboard name, organization, or signed-in user.

For more information, refer to Filter and Group by. ... Create a new variable with Type: Filters. Select your Prometheus data source. Save the dashboard. After you add the variable, a filter bar appears at the top of the dashboard. Viewers can add filters by selecting a label, operator (=, !=, =~, !~), and value. Grafana automatically applies these filters to all Prometheus queries on the dashboard.

October 31, 2024 - There are two main types of variables in Grafana: global variables and user-defined variables. Global variables are built-in and automatically populated. For example, ${__user} contains the name of the currently logged in user.

For example, if you have a series of four linked variables (country, region, server, metric) and you change a root variable value (country), the Grafana workspace must run queries for all the dependent variables before it updates the visualizations in the dashboard. Grafana has global built-in ...

Create dashboard variables that let viewers filter data, change data sources, set time intervals, and reuse values across queries, titles, and links.

Use Grafana built-in global variables to reference dashboard metadata, time ranges, intervals, and user context in queries, links, and panel titles.

Change the variable value using the selector on top of the scene to see updated data in your visualization. Following, you'll find the complete code of a scene using QueryVariable: ... The variables system supports a variety of built-in macros, which are variable expressions that can be used without the need to include any additional variables.

These variables are useful in queries, dashboard links, panel links, and data links. ... This variable is the name of the current dashboard. ... Grafana has two built-in time range variables: $__from and $__to.

Global variables: Built-in variables that Grafana provides automatically, such as the current time range, dashboard name, organization, or signed-in user.

May 24, 2026 - When you zoom from one hour to seven days, Grafana recalculates the built-in time values and rewrites the query again. The panel keeps the same query structure, but the range inside the query changes with the dashboard. In a multi-environment dashboard, the panels stay the same while the selected environment, service, or data source changes. Grafana variables make those selections part of the dashboard, rather than forcing a separate dashboard for each target.

December 10, 2025 - Grafana variables can be used to create interactive dashboards by creating a variable as a query, modifying the graph query to use the variable, and setting the dashboard to interactive mode.

Instead of hard-coding details ... you can use variables. Grafana lists these variables in drop-down selection boxes at the top of the dashboard to help you change the data displayed in your dashboard....

This dashboard contains one of each type of Grafana dashboard variable.

For multi-valued variables it returns the text representation combined with +. ... servers = ["test1", "test2"] String to interpolate: '${servers:text}' Interpolation result: "test1 + test2" ... In this webinar, we’ll demo how to get started using the LGTM Stack: Loki for logs, Grafana for visualization, Tempo for traces, and Mimir for metrics.

Template variables let you create dynamic, reusable dashboards by replacing hard-coded values (such as server names, namespaces, or job labels) with selectable variables. Grafana displays these variables as dropdown menus at the top of the ...

Instead of hard-coding details ... 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....

October 4, 2018 - Explore does not do expansion of Grafana's built-in variables yet. This will be helpful when jumping from dashboards that use queries with variables. Custom dashboard variables must stay expanded though.

December 13, 2024 - Text Box Variables Allow users to input custom values, ideal for advanced filters or regex queries. Data Link Variables Provide contextual links to other dashboards or external resources. Kibana vs Grafana: Key Differences and Use Cases | Last9

January 11, 2023 - These are useful because they allow you to create more interactive and dynamic dashboards. Instead of hard-coding things like path, cluster, and host names within your dashboard queries, you can utilize defined parameters.