[root@OS-004-OSD-003 ~]# ceph osd tree
# id    weight  type name       up/down reweight
-1      8.16    root default
-2      2.72            host OS-004-OSD-001
0       2.72                    osd.0   up      1
-3      2.72            host OS-004-OSD-002
1       2.72                    osd.1   up      1
-4      2.72            host OS-004-OSD-003
2       2.72                    osd.2   down    0