Alert rule: CephPoolFull

Please consider opening a PR to improve this runbook if you gain new information about causes of the alert, or how to debug or resolve the alert. Click "Edit this Page" in the top right corner to create a PR directly on GitHub.


This alert fires when the Ceph cluster utilization is higher than 85% of the cluster capacity, and the cluster is in read-only mode. To resolve this alert, unused data should be deleted or the cluster size must be increased.

Steps for debugging

See the how-to on scaling a PVC-based Ceph cluster for instructions to resize the cluster.