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.
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:
Name
List returned
Metric Types
Metric type names available for the specified service.
Labels Keys
Keys for metric label and resource label in the specified metric.
Labels Values
Values for the label in the specified metric.
Resource Types
Resource types for the specified metric.
Aggregations
Aggregations (cross-series reducers) for the specified metric.
Aligners
Aligners (per-series aligners) for the specified metric.
Alignment periods
All alignment periods available in the query editor in Grafana.
Selectors
Selectors for SLO (Service Level Objectives) queries.
SLO Services
Service Monitoring services for SLO queries.
Service Level Objectives (SLO)
SLOs for the specified SLO service.
Use variables in queries
Use Grafana's variable syntax to include variables in queries.
For details, refer to the variable syntax documentation.
