[cephadmin@ceph-node1 ceph]$ systemctl list-unit-files|grep ceph
ceph-disk@.service                            static
ceph-mds@.service                             disabled
ceph-mgr@.service                             enabled
ceph-mon@.service                             enabled
ceph-osd@.service                             enabled-runtime
ceph-radosgw@.service                         disabled
ceph-volume@.service                          enabled
ceph-mds.target                               enabled
ceph-mgr.target                               enabled
ceph-mon.target                               enabled
ceph-osd.target                               enabled
ceph-radosgw.target                           enabled
ceph.target                                   enabled
[cephadmin@ceph-node1 ceph]$ sudo systemctl status ceph-mds@ceph-node1
● ceph-mds@ceph-node1.service - Ceph metadata server daemon
   Loaded: loaded (/usr/lib/systemd/system/ceph-mds@.service; disabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Mon 2018-10-22 19:41:27 MSK; 1min 56s ago
  Process: 12086 ExecStart=/usr/bin/ceph-mds -f --cluster ${CLUSTER} --id %i --setuser ceph --setgroup ceph (code=exited, status=1/FAILURE)
 Main PID: 12086 (code=exited, status=1/FAILURE)

Oct 22 19:41:27 ceph-node1 systemd[1]: Unit ceph-mds@ceph-node1.service entered failed state.
Oct 22 19:41:27 ceph-node1 systemd[1]: ceph-mds@ceph-node1.service failed.
Oct 22 19:41:27 ceph-node1 systemd[1]: ceph-mds@ceph-node1.service holdoff time over, scheduling restart.
Oct 22 19:41:27 ceph-node1 systemd[1]: start request repeated too quickly for ceph-mds@ceph-node1.service
Oct 22 19:41:27 ceph-node1 systemd[1]: Failed to start Ceph metadata server daemon.
Oct 22 19:41:27 ceph-node1 systemd[1]: Unit ceph-mds@ceph-node1.service entered failed state.
Oct 22 19:41:27 ceph-node1 systemd[1]: ceph-mds@ceph-node1.service failed.
Oct 22 19:42:58 ceph-node1 systemd[1]: start request repeated too quickly for ceph-mds@ceph-node1.service
Oct 22 19:42:58 ceph-node1 systemd[1]: Failed to start Ceph metadata server daemon.
Oct 22 19:42:58 ceph-node1 systemd[1]: ceph-mds@ceph-node1.service failed.