To start or stop all Ceph daemons by their types, perform the following set of commands:

Starting daemons by type:

1. To start the Ceph monitor daemons on localhost, execute the systemd manager with the start command followed by the daemon type:

# systemctl start ceph-mon.target

2. To start the Ceph monitor daemon on a remote host, execute the same command with the -H option and the specified hostname. To start mon.1 from ceph-node1 issue:

root@ceph-node1 # systemctl -H ceph-node2 start ceph-mon.target

3. Similarly, you can start daemons of other types, that is osds, mds, and ceph-radosgw by issuing:

# systemctl start ceph-osd.target
# systemctl start ceph-mds.target
# systemctl start ceph-radosgw.target

Stopping daemons by type:

1. To stop the Ceph monitor daemons on a localhost, execute the systemd manager with the stop command followed by the daemon type:

# systemctl stop ceph-mon.target

2. To stop the Ceph monitor daemon on a remote host, execute the same command with the -H option and the specified hostname. To stop mon.1 from ceph-node1 issue:

 root@ceph-node1 # systemctl -H ceph-node2 stop ceph.mon.target

3. Similarly, you can stop daemons of other types, that is osds, mds, and ceph-radosgw by issuing:

 # systemctl stop ceph-osd.target
 # systemctl stop ceph-mon.target
 # systemctl stop ceph-radosgw.target