health HEALTH_WARN mds cluster is degraded
   monmap e1: 3 mons at {a=10.3.0.1:6789/0,b=10.3.0.2:6789/0,c=10.3.1.1:6789/0}, election epoch 168, quorum 0,1,2 a,b,c
   osdmap e4106: 4 osds: 4 up, 3 in
    pgmap v5995094: 960 pgs: 960 active+clean; 196 GB data, 774 GB used, 1208 GB / 2000 GB avail; 190KB/s rd, 0op/s
   mdsmap e180: 1/1/1 up {0=0=up:replay}, 1 up:standby-replay