Grafana Use Dashboard Variables

Use variables to make dashboards navigable and reusable without hiding what the query is doing. Keep the variable model explicit because it changes query semantics, panel titles, repeat behavior, and dashboard cost.

When to Apply

Use this skill when the dashboard problem is primarily about:

• Choosing the right Grafana variable type.
• Interpolating variables into queries, titles, and links.
• Making Prometheus-backed variables behave correctly with multi-select, All, or time-aware lists.
• Repeating panels or rows from a variable.
• Debugging dashboards whose output changes with variable state.

Workflow

1. Decide what the user should be able to filter or compare.
2. Pick the simplest variable type that supports that interaction.
3. Decide whether the variable is standalone, chained from another variable, or already covered by a Grafana global variable.
4. Wire the variable into PromQL, titles, and links with explicit interpolation syntax.
5. Use repetition only when comparison value outweighs layout cost.