08.存储Cinder→5.场景学习→12.Ceph Volume Provider→2.常用命令

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描述	命令
查看ceph版本	1 2 root@controller:~# ceph --version ceph version 12.2.11 (26dc3775efc7bb286a1d6d66faee0ba30ea23eee) luminous (stable)
查看ceph相关的进程  The Ceph Manager daemon (ceph-mgr) runs alongside monitor daemons, to provide additional monitoring and interfaces to external monitoring and management systems.	我的devstack： 研发环境：
查看存储池 images：glance的rbd_store_pool，对应的是image文件 vms：nova的images_rbd_pool，对应的是镜像文件是启动盘，backing file依然保存在_base文件夹中 volumes：cinder的rbd_pool，对应的volume文件	图
查看存储池内的pg数量	1 2 3 4 5 6 root@controller:~# ceph osd pool get images pg_num pg_num: 8 root@controller:~# ceph osd pool get vms pg_num pg_num: 8 root@controller:~# ceph osd pool get volumes pg_num pg_num: 8
查看集群状态 若出现错误： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 root@controller:~# ceph -s cluster: id: eab37548-7aef-466a-861c-3757a12ce9e8 health: HEALTH_WARN services: mon: 1 daemons, quorum controller mgr: x(active) osd: 1 osds: 1 up, 1 in data: pools: 3 pools, 24 pgs objects: 2 objects, 19B usage: 249MiB used, 23.7GiB / 24.0GiB avail pgs: 24 active+clean 计算方法：若pgs=64，副本数为3，osd个数为9，那么每个osd均分64/9*3=21个pgs