[root@mao ~]# ceph -w
no monitors specified to connect to.
Error connecting to cluster: ObjectNotFound
[root@mao ~]# ceph -w -m stalin
    cluster c4a4b67c-97b8-43f6-898a-a37a6d660c17
     health HEALTH_OK
     monmap e3: 3 mons at {hitler=10.8.4.26:6789/0,saddam=10.8.4.21:6789/0,stalin=10.8.4.25:6789/0}, election epoch 330, quorum 0,1,2 hitler,saddam,stalin
     osdmap e1700: 6 osds: 6 up, 6 in
      pgmap v10078546: 400 pgs, 14 pools, 1381 GB data, 391 kobjects
            2768 GB used, 5336 GB / 8105 GB avail
                 400 active+clean
  client io 0 B/s rd, 125 kB/s wr, 37 op/s


2014-04-04 15:16:30.599080 mon.0 [INF] pgmap v10078544: 400 pgs: 400 active+clean; 1381 GB data, 2768 GB used, 5336 GB / 8105 GB avail; 0 B/s rd, 183 kB/s wr, 46 op/s
2014-04-04 15:16:31.749324 mon.0 [INF] pgmap v10078545: 400 pgs: 400 active+clean; 1381 GB data, 2768 GB used, 5336 GB / 8105 GB avail; 0 B/s rd, 232 kB/s wr, 56 op/s
2014-04-04 15:16:32.775040 mon.0 [INF] pgmap v10078546: 400 pgs: 400 active+clean; 1381 GB data, 2768 GB used, 5336 GB / 8105 GB avail; 0 B/s rd, 125 kB/s wr, 37 op/s
2014-04-04 15:16:34.024635 mon.0 [INF] pgmap v10078547: 400 pgs: 400 active+clean; 1381 GB data, 2768 GB used, 5336 GB / 8105 GB avail; 0 B/s rd, 106 kB/s wr, 32 op/s