cockroachdb / cockroachdb/cockroach
changefeeds: export per-job max_behind_nanos metric
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T-cdc
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Description
We monitor the health of change feeds in Cockroach Cloud. But right now we can only monitor changefeeds at the cluster level. This means if one changefeed is known to be unhealthy (or was never healthy) we have to silence alerts for the whole cluster.
We should add job_id to the max_behind_nandos metric. That will let us write a monitor that detects when a changefeed that was healthy for the last week suddenly became unhealthy.
Jira issue: CRDB-64924
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