CephClusterCriticallyFull

Storage cluster utilization has crossed 80% and will become read-only at 85%. Your Ceph cluster will become read-only once utilization crosses 85%. Free up some space or expand the storage cluster immediately. It is common to see alerts related to Object Storage Device (OSD) devices full or near full prior to this alert.

Diagnosis

Scaling storage

Depending on the type of cluster, you need to add storage devices, nodes, or both.

For more information, see the Scaling storage guide.

Mitigation

Deleting information

If it is not possible to scale up the cluster, you need to delete information in order to free up some space.