Google Cloud Monitoring template variables
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.
Use query variables
Variables of the type Query help you query Google Cloud Monitoring for various types of data. The Google Cloud Monitoring data source plugin provides the following Query Types:
Use variables in queries
Use Grafana’s variable syntax to include variables in queries. For details, refer to the variable syntax documentation.