Metrics about Prometheus Alerting

Question

We have Prometheus & AlertManager in production and would like to have some Dashboards about when Alerts happened and when the Alert has gone away.

Are there some metrics about this "out of the box" - or do I have to implement something to achieve this? Something like a "MyAlertListener-Application" which offers a prometheus endpoint itself.

Answer 1

Prometheus provides a synthetic time series called ALERTS which you can query and visualize for reasoning about alert states. See the documentation.