Ceph手动剔除osd与增加osd
代码语言：javascript
复制[root@server1 ceph-ansible]# ceph --version
ceph version 12.2.13 (584a20eb0237c657dc0567da126be145106aa47e) luminous (stable)
[root@server1 ceph-ansible]#
进入维护模式
代码语言：javascript
复制ceph osd set noout
ceph osd set nobackfill
ceph osd set norecover
ceph osd set norebalance
手动停止OSD
代码语言：javascript
复制#首先收集osd信息
[root@server3 ~]# ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0.14575 root default
-3 0.04858 host server1
1 hdd 0.02429 osd.1 up 1.00000 1.00000
2 hdd 0.02429 osd.2 up 1.00000 1.00000
-7 0.04858 host server2
4 hdd 0.02429 osd.4 up 1.00000 1.00000
5 hdd 0.02429 osd.5 up 1.00000 1.00000
-5 0.04858 host server3
0 hdd 0.02429 osd.0 up 1.00000 1.00000
3 hdd 0.02429 osd.3 up 1.00000 1.00000
[root@server3 ~]#
#查看osd挂载
ot@server3 ~]# df -TH
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/centos-root xfs 19G 1.5G 17G 9% /
devtmpfs devtmpfs 969M 0 969M 0% /dev
tmpfs tmpfs 982M 0 982M 0% /dev/shm
tmpfs tmpfs 982M 11M 972M 2% /run
tmpfs tmpfs 982M 0 982M 0% /sys/fs/cgroup
/dev/sda1 xfs 1.1G 149M 915M 14% /boot
tmpfs tmpfs 197M 0 197M 0% /run/user/0
/dev/sdb1 xfs 102M 5.6M 96M 6% /var/lib/ceph/osd/ceph-0
/dev/sdc1 xfs 102M 5.6M 96M 6% /var/lib/ceph/osd/ceph-3
[root@server3 ~]#
代码语言：javascript
复制[root@server1 ceph-ansible]# ceph-disk list
/dev/dm-0 other, xfs, mounted on /
/dev/dm-1 other, swap
/dev/sda :
/dev/sda1 other, xfs, mounted on /boot
/dev/sda2 other, LVM2_member
/dev/sdb :
/dev/sdb1 ceph data, active, cluster ceph, osd.1, block /dev/sdb2, block.db /dev/sdd2
/dev/sdb2 ceph block, for /dev/sdb1
/dev/sdc :
/dev/sdc1 ceph data, active, cluster ceph, osd.2, block /dev/sdc2, block.db /dev/sdd3
/dev/sdc2 ceph block, for /dev/sdc1
/dev/sdd :
/dev/sdd2 ceph block.db, for /dev/sdb1
/dev/sdd3 ceph block.db, for /dev/sdc1
/dev/sr0 other, unknown
[root@server1 ceph-ansible]#
代码语言：javascript
复制systemctl stop ceph-osd@3
手动剔除osd
代码语言：javascript
复制[root@server3 ~]# systemctl stop ceph-osd@3
[root@server3 ~]# ceph osd out 3
marked out osd.3.
[root@server3 ~]# ceph osd crush remove osd.3
removed item id 3 name 'osd.3' from crush map
[root@server3 ~]# ceph auth del osd.3
updated
[root@server3 ~]# ceph osd rm osd.3
removed osd.3
[root@server3 ~]# umount /var/lib/ceph/osd/ceph-3
[root@server3 ~]#
解除维护状态
代码语言：javascript
复制ceph osd unset noout
ceph osd unset nobackfill
ceph osd unset norecover
ceph osd unset norebalance
代码语言：javascript
复制[root@server3 ~]# ceph osd unset noout
noout is unset
[root@server3 ~]# ceph osd unset nobackfill
nobackfill is unset
[root@server3 ~]# ceph osd unset norecover
norecover is unset
[root@server3 ~]# ceph osd unset norebalance
norebalance is unset
[root@server3 ~]#
代码语言：javascript
复制[root@server1 ceph-ansible]# ceph -s
cluster:
id: 33852410-b6bd-46bc-a163-88a816221ecc
health: HEALTH_OK
services:
mon: 3 daemons, quorum server1,server2,server3
mgr: server1(active), standbys: server3, server2
mds: cephfs-1/1/1 up {0=server1=up:active}, 2 up:standby
osd: 5 osds: 5 up, 5 in
rgw: 3 daemons active
data:
pools: 6 pools, 48 pgs
objects: 210 objects, 4.63KiB
usage: 5.04GiB used, 119GiB / 125GiB avail
pgs: 48 active clean
io:
recovery: 57B/s, 7objects/s
[root@server1 ceph-ansible]# ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0.12146 root default
-3 0.04858 host server1
1 hdd 0.02429 osd.1 up 1.00000 1.00000
2 hdd 0.02429 osd.2 up 1.00000 1.00000
-7 0.04858 host server2
4 hdd 0.02429 osd.4 up 1.00000 1.00000
5 hdd 0.02429 osd.5 up 1.00000 1.00000
-5 0.02429 host server3
0 hdd 0.02429 osd.0 up 1.00000 1.00000
[root@server1 ceph-ansible]#
