一起学习ceph系列：
查看集群状态
[root@ceph-admin ~]# ceph health detail
HEALTH_OK
[root@ceph-admin ~]# ceph -s
cluster:
id: 523b24a7-9a44-4f04-b98b-c59c1b02a43d
health: HEALTH_OK
services:
mon: 1 daemons, quorum ceph-admin (age 23h)
【clash crash dump】mgr: ceph-admin(active, since 7m)
osd: 3 osds: 3 up (since 23h), 3 in (since 3d)
data:
pools: 0 pools, 0 pgs
objects: 0 objects, 0 B
usage: 3.0 GiB used, 1.6 TiB / 1.6 TiB avail
pgs:
登陆到monitor节点，执行如下命令
[root@ceph-admin ~]# systemctl list-unit-files|grep enabled|grep ceph
ceph-crash.service enabled
ceph-mgr@.service enabled
ceph-mon@.service enabled
ceph-osd@.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
systemctl list-units --type=service|grep ceph
[root@ceph-admin ~]# systemctl list-units --type=service|grep ceph
ceph-crash.service loaded active running Ceph crash dump collector
ceph-mgr@ceph-admin.service loaded active running Ceph cluster manager daemon
● ceph-mon@0.service loaded failed failed Ceph cluster monitor daemon
● ceph-mon@\x2a.service loaded failed failed Ceph cluster monitor daemon
ceph-mon@ceph-admin.service loaded active running Ceph cluster monitor daemon
● ceph-mon@ip-10-101-200-168.service loaded failed failed Ceph cluster monitor daemon
● ceph-osd@0.service loaded failed failed Ceph object storage daemon osd.0
mon异常维护
systemctl status ceph-mon@ceph-admin.service
systemctl start ceph-mon@ceph-admin.service
systemctl stop ceph-mon@ceph-admin.service
root@ceph-admin ~]# systemctl status ceph-mon@ceph-admin.service
● ceph-mon@ceph-admin.service - Ceph cluster monitor daemon
Loaded: loaded (/usr/lib/systemd/system/ceph-mon@.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2020-10-25 22:47:34 CST; 1s ago
Main PID: 26118 (ceph-mon)
CGroup: /system.slice/system-ceph\x2dmon.slice/ceph-mon@ceph-admin.service
└─26118 /usr/bin/ceph-mon -f --cluster ceph --id ceph-admin --setuser ceph --setgroup ceph
Oct 25 22:47:34 ceph-admin systemd[1]: Started Ceph cluster monitor daemon.
[root@ceph-admin ~]# systemctl status ceph-mon@ceph-admin.service
● ceph-mon@ceph-admin.service - Ceph cluster monitor daemon
Loaded: loaded (/usr/lib/systemd/system/ceph-mon@.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2020-10-25 22:47:34 CST; 36s ago
Main PID: 26118 (ceph-mon)
CGroup: /system.slice/system-ceph\x2dmon.slice/ceph-mon@ceph-admin.service
└─26118 /usr/bin/ceph-mon -f --cluster ceph --id ceph-admin --setuser ceph --setgroup ceph
Oct 25 22:47:34 ceph-admin systemd[1]: Started Ceph cluster monitor daemon.
[root@ceph-admin ~]# systemctl list-units --type=service|grep ceph
ceph-crash.service loaded active running Ceph crash dump collector
ceph-mgr@ceph-admin.service loaded active running Ceph cluster manager daemon
ceph-mon@0.service loaded activating auto-restart Ceph cluster monitor daemon
ceph-mon@\x2a.service loaded activating auto-restart Ceph cluster monitor daemon
ceph-mon@ip-10-101-200-168.service loaded active running Ceph cluster monitor daemon
● ceph-osd@0.service loaded failed failed Ceph object storage daemon osd.0
osd异常维护
systemctl status ceph-osd@0.service
systemctl status ceph-osd@1.service
systemctl status ceph-osd@2.service
systemctl start ceph-osd@0.service
[root@node01 ~]# systemctl start ceph-osd@0.service
[root@node01 ~]# systemctl status ceph-osd@0.service
● ceph-osd@0.service - Ceph object storage daemon osd.0
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