Metrics do not show up on the dashboard

Diagnostic steps

1. Is the agent active? In the cabinet /app/agents the status should be active and last_seen_at recent.
2. Are metrics in the TSDB? curl 'http://localhost:8428/api/v1/series?match=up' should return an array with your organization_id in the labels.
3. Is the PromQL valid? POST /api/v1/promql/validate with your expression.
4. Region? If you are multi-region, check the dropdown in the sidebar (the selector persists in localStorage).

The most common cause

The region selector is set to a region that has no data. Reset it to default via the dropdown.