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Chapter 2. Process Management
Each time you want to start, restart, and stop the Ceph daemons, you must specify the daemon type or the daemon instance.
2.1. Running Ceph as a systemd Service 링크 복사링크가 클립보드에 복사되었습니다!
In Red Hat Ceph Storage 2, all process management is done through the Systemd service.
2.1.1. Starting, Stopping, Restarting All Daemons 링크 복사링크가 클립보드에 복사되었습니다!
To start, stop, or restart all the Ceph daemons, execute the following commands from the local node running the Ceph daemons, and as root:
Start All Ceph Daemons
# systemctl start ceph.targetStop All Ceph Daemons
# systemctl stop ceph.targetRestart All Ceph Daemons
# systemctl restart ceph.target
2.1.2. Starting, Stopping, Restarting All Daemons by Type 링크 복사링크가 클립보드에 복사되었습니다!
To start, stop, or restart all Ceph daemons of a particular type, execute the following commands from the local node running the Ceph daemons, and as root:
All Monitor Daemons
Starting:
# systemctl start ceph-mon.targetStopping:
# systemctl stop ceph-mon.targetRestarting:
# systemctl restart ceph-mon.target
All OSD Daemons
Starting:
# systemctl start ceph-osd.targetStopping:
# systemctl stop ceph-osd.targetRestarting:
# systemctl restart ceph-osd.target
All RADOS Gateway Daemons
Starting:
# systemctl start ceph-radosgw.targetStopping:
# systemctl stop ceph-radosgw.targetRestarting:
# systemctl restart ceph-radosgw.target
2.1.3. Starting, Stopping, Restarting a Daemon by Instances 링크 복사링크가 클립보드에 복사되었습니다!
To start, stop, or restart a Ceph daemon of a particular type by instance, execute the following commands from the local node running the Ceph daemons, and as root:
Monitor Instance
Starting:
# systemctl start ceph-mon@<monitor_hostname>Stopping:
# systemctl stop ceph-mon@<monitor_hostname>Restarting:
# systemctl restart ceph-mon@<monitor_hostname>
OSD Instance
Starting:
# systemctl start ceph-osd@<OSD_number>Stopping:
# systemctl stop ceph-osd@<OSD_number>Restarting:
# systemctl restart ceph-osd@<OSD_number>
RADOS Gateway Instance
Starting:
# systemctl start ceph-radosgw@rgw.<gateway_hostname>Stopping:
# systemctl stop ceph-radosgw@rgw.<gateway_hostname>Restarting:
# systemctl restart ceph-radosgw@rgw.<gateway_hostname>