cluster 604e5fe7-80cd-4432-906b-9887b2f625e7
   health HEALTH_WARN
   monmap e3: 3 mons at {n001=192.168.22.1:6789/0,n009=192.168.22.9:6789/0,n010=192.168.22.10:6789/0}, election epoch 12, quorum 0,1,2 n001,n009,n010
   osdmap e94: 10 osds: 10 up, 10 in
    pgmap v2037: 192 pgs: 192 active+clean; 18242 MB data, 53235 MB used, 23610 GB / 23662 GB avail
   mdsmap e9: 1/1/1 up {0=n010=up:active}

[root@n001 ~]# ceph
ceph> health detail
HEALTH_WARN
mon.n001 addr 192.168.22.1:6789/0 has 6% avail disk space -- low disk space!