[root@ceph-admin ~]# ceph -s
    cluster f8aa3ef3-e5c9-4bd1-9ee8-2b141ff2f485
     health HEALTH_WARN
            1 near full osd(s)
     monmap e1: 1 mons at {ceph-admin=192.168.127.12:6789/0}
            election epoch 1, quorum 0 ceph-admin
     osdmap e15404: 11 osds: 11 up, 11 in
      pgmap v305109: 256 pgs, 1 pools, 6674 GB data, 1688 kobjects
            13409 GB used, 3922 GB / 18260 GB avail
                 256 active+clean