root@ce01:~# ceph status
  cluster:
    id:     b512a8d7-1956-4ef3-aa3e-6f24d08878cf
    health: HEALTH_WARN
            Reduced data availability: 256 pgs inactive

  services:
    mon: 3 daemons, quorum ce01,ce03,ce02 (age 3m)
    mgr: ce03(active, since 42h), standbys: ce02, ce01
    mds: cephfs:1 {0=ce02=up:active} 2 up:standby
    osd: 6 osds: 6 up (since 41h), 6 in (since 11d)

  data:
    pools:   4 pools, 288 pgs
    objects: 24 objects, 4.9 MiB
    usage:   683 GiB used, 16 TiB / 16 TiB avail
    pgs:     88.889% pgs unknown
             256 unknown
             32  active+clean