check-ceph-healthlisted

# Check Ceph Health Use this guide to diagnose and remediate Ceph storage issues on OpenShift clusters running OCS/ODF (OpenShift Data Foundation). ## 1. Ceph Cluster Health ```bash # Quick health status kubectl -n openshift-storage get cephcluster -o jsonpath='{.items[*].status.ceph.health}' # Detailed health with error messages kubectl -n openshift-storage get cephcluster -o jsonpath='{.items[*].status.ceph.details}' | python3 -m json.tool # Capacity overview (bytesAvailable, bytesUsed, bytesTotal) kubectl -n openshift-storage get cephcluster -o jsonpath='{.items[*].status.ceph.capacity}' | python3 -m json.tool ``` Health states: - `HEALTH_OK` -- cluster is healthy - `HEALTH_WARN` -- degraded but functional (backfillfull, nearfull, degraded PGs) - `HEALTH_ERR` -- critical, writes may be blocked (full OSDs, too few OSDs, down PGs) ## 2. Running Ceph Commands OCS/ODF clusters may not have a rook-ceph-tools pod deployed. Use a mon pod to run ceph commands directly. ```bash # Find the mon pod and its service address MON_POD=$(kubectl -n openshift-storage get pods -l app=rook-ceph-mon -o jsonpath='{.items[0].metadata.name}') MON_ADDR=$(kubectl -n openshift-storage get pod $MON_POD -o jsonpath='{.spec.containers[0].env[?(@.name=="ROOK_CEPH_MON_HOST")].value}' | sed 's/\[//;s/\]//') # Run any ceph command via the mon pod kubectl -n openshift-storage exec $MON_POD -c mon -- \ ceph -m $MON_ADDR --keyring /etc/ceph/keyring-store/keyring status ``` Useful ceph commands to