查看ceph 集群状态
1.ssh 登陆任一MON主机
2.执行 sudo ceph health detail 命令
启动、停止、重启、查看MON进程
1.登陆到MON的服务器，执行如下命令
sudo systemctl start ceph-mon@mon-host
sudo systemctl stop ceph-mon@mon-host
sudo systemctl restart ceph-mon@mon-host
sudo systemctl status ceph-mon@mon-host
启动、停止、重启、查看OSD所有和单个进程
1.登陆到OSD 的服务器，对服务器上的所有OSD操作
sudo systemctl start ceph-osd@*
sudo systemctl stop ceph-osd@*
sudo systemctl restart ceph-osd@*
sudo systemctl status ceph-osd@*
2.如上把@* 替换为OSD的ID 如@22，即可执行对应ID OSD的操作
查看OSD 与HOST 的归属关系
1.登陆到任意一台MON主机，执行命令
sudo ceph osd tree
查看OSD node上 所有OSD data目录和 挂载磁盘
1.ls /var/lib/ceph/osd/
2. sudo mount |grep osd
如：sudo mount|grep osd
/dev/sdh1 on /var/lib/ceph/osd/ceph-222 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdl1 on /var/lib/ceph/osd/ceph-227 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdd1 on /var/lib/ceph/osd/ceph-218 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdb1 on /var/lib/ceph/osd/ceph-216 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdf1 on /var/lib/ceph/osd/ceph-220 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdj1 on /var/lib/ceph/osd/ceph-224 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdi1 on /var/lib/ceph/osd/ceph-223 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdk1 on /var/lib/ceph/osd/ceph-225 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdg1 on /var/lib/ceph/osd/ceph-221 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sde1 on /var/lib/ceph/osd/ceph-219 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdc1 on /var/lib/ceph/osd/ceph-217 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
/dev/sdm1 on /var/lib/ceph/osd/ceph-226 type xfs (rw,nodev,noexec,noatime,nodiratime,attr2,inode64,noquota)
