这篇文章给大家分享的是有关docker中ceph集群的日常运维操作有哪些的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。
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查看ceph的所有守护进程
[root@k8s-node1 ceph]# systemctl list-unit-files |grep ceph
ceph-disk@.service static
ceph-mds@.service disabled
ceph-mgr@.service disabled
ceph-mon@.service enabled
ceph-osd@.service enabled
ceph-radosgw@.service disabled
ceph-mds.target enabled
ceph-mgr.target enabled
ceph-mon.target enabled
ceph-osd.target enabled
ceph-radosgw.target enabled
ceph.target enabled
按照类型在 ceph 节点上启动特定类型的守护进程
systemctl start ceph-osd.target
systemctl start ceph-mon.target
systemctl start ceph-mds.target
ceph 节点上启动特定的守护进程实例
systemctl start ceph-osd@{id}
systemctl start ceph-mon@{hostname}
systemctl start ceph-msd@{hostname}mon 监控状态检查
[root@k8s-node1 ceph]# ceph -s
cluster 2e6519d9-b733-446f-8a14-8622796f83ef
health HEALTH_OK
monmap e4: 3 mons at {k8s-node1=172.16.22.201:6789/0,k8s-node2=172.16.22.202:6789/0,k8s-node3=172.16.22.203:6789/0}
election epoch 26, quorum 0,1,2 k8s-node1,k8s-node2,k8s-node3
mgr active: k8s-node1 standbys: k8s-node3, k8s-node2
osdmap e31: 3 osds: 3 up, 3 in
flags sortbitwise,require_jewel_osds,require_kraken_osds
pgmap v13640: 64 pgs, 1 pools, 0 bytes data, 0 objects
35913 MB used, 21812 MB / 57726 MB avail
64 active+clean[root@k8s-node1 ceph]# ceph
ceph> status
cluster 2e6519d9-b733-446f-8a14-8622796f83ef
health HEALTH_OK
monmap e4: 3 mons at {k8s-node1=172.16.22.201:6789/0,k8s-node2=172.16.22.202:6789/0,k8s-node3=172.16.22.203:6789/0}
election epoch 26, quorum 0,1,2 k8s-node1,k8s-node2,k8s-node3
mgr active: k8s-node1 standbys: k8s-node3, k8s-node2
osdmap e31: 3 osds: 3 up, 3 in
flags sortbitwise,require_jewel_osds,require_kraken_osds
pgmap v13670: 64 pgs, 1 pools, 0 bytes data, 0 objects
35915 MB used, 21810 MB / 57726 MB avail
64 active+cleanceph> health
HEALTH_OK
ceph> mon_status
{"name":"k8s-node1","rank":0,"state":"leader","election_epoch":26,"quorum":[0,1,2],"features":{"required_con":"9025616074522624","required_mon":["kraken"],"quorum_con":"1152921504336314367","quorum_mon":["kraken"]},"outside_quorum":[],"extra_probe_peers":["172.16.22.202:6789\/0","172.16.22.203:6789\/0"],"sync_provider":[],"monmap":{"epoch":4,"fsid":"2e6519d9-b733-446f-8a14-8622796f83ef","modified":"2018-10-28 21:30:09.197608","created":"2018-10-28 09:49:11.509071","features":{"persistent":["kraken"],"optional":[]},"mons":[{"rank":0,"name":"k8s-node1","addr":"172.16.22.201:6789\/0","public_addr":"172.16.22.201:6789\/0"},{"rank":1,"name":"k8s-node2","addr":"172.16.22.202:6789\/0","public_addr":"172.16.22.202:6789\/0"},{"rank":2,"name":"k8s-node3","addr":"172.16.22.203:6789\/0","public_addr":"172.16.22.203:6789\/0"}]}}ceph 日志记录
ceph 日志默认的位置保存在节点/var/log/ceph/ceph.log 里面可以使用 ceph -w 查看实时的日志记录情况
哪个节点报错了，就登录到哪个节点上用下面的命令看日志。
[root@k8s-node1 ceph]# ceph -w
ceph mon 也在不断的对自⼰状态进⾏各种检查，检查失败的时候会将自⼰的信息写到集群日志中去
[root@k8s-node1 ceph]# ceph mon stat
e4: 3 mons at {k8s-node1=172.16.22.201:6789/0,k8s-node2=172.16.22.202:6789/0,k8s-node3=172.16.22.203:6789/0}, election epoch 26, quorum 0,1,2 k8s-node1,k8s-node2,k8s-node3检查 osd
[root@k8s-node1 ceph]# ceph osd stat
osdmap e31: 3 osds: 3 up, 3 in
flags sortbitwise,require_jewel_osds,require_kraken_osds
[root@k8s-node1 ceph]# ceph osd tree
ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY
-1 0.05516 root default
-2 0.01839 host k8s-node1
0 0.01839 osd.0 up 1.00000 1.00000
-3 0.01839 host k8s-node2
1 0.01839 osd.1 up 1.00000 1.00000
-4 0.01839 host k8s-node3
2 0.01839 osd.2 up 1.00000 1.00000
检查 pool 的⼤小以及可用状态
[root@k8s-node1 ceph]# ceph df
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
57726M 21811M 35914M 62.21
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
rbd 0 0 0 5817M 0
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