Alert rule: CephPoolBackfillFull
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 close to 80% of the cluster capacity. This will prevent rebalance operations from completing.
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.