Troubleshooting Monitors — Ceph Documentation
docs.ceph.com › en › latestceph --admin-daemon <full_path_to_asok_file> <command>. Using help as the command to the ceph tool will show you the supported commands available through the admin socket. Please take a look at config get, config show, mon stat and quorum_status , as those can be enlightening when troubleshooting a monitor.
Monitoring a Cluster — Ceph Documentation
docs.ceph.com › en › latestCeph continuously runs various health checks against its own status. When a health check fails, this is reflected in the output of ceph status (or ceph health). In addition, messages are sent to the cluster log to indicate when a check fails, and when the cluster recovers.