ceph常见问题处理：https://access.redhat.com/documentation/zh-cn/red_hat_ceph_storage/5/html/troubleshooting_guide/most-common-ceph-osd-errors
1、问题报错1：
health: HEALTH_WARN
1 monitors have not enabled msgr2
解决：ceph mon enable-msgr2
2、问题报错2：
health: HEALTH_WARN
mons are allowing insecure global_id reclaim
解决：
ceph config set mon mon_warn_on_insecure_global_id_reclaim false
ceph config set mon mon_warn_on_insecure_global_id_reclaim_allowed false
3、问题报错3：
health: HEALTH_WARN
application not enabled on 1 pool(s)
查看原因：
root@control ~(admin-openrc)]# ceph health detail
HEALTH_WARN application not enabled on 1 pool(s)
POOL_APP_NOT_ENABLED application not enabled on 1 pool(s)
application not enabled on pool 'images'
use 'ceph osd pool application enable <pool-name> <app-name>', where <app-name> is 'cephfs', 'rbd', 'rgw', or freeform for custom applications.
分析
运行ceph health detail命令发现是新加入的存储池test没有被应用程序标记
解决：
ceph osd pool application enable images rbd
4、问题报错：
[root@controller1 ~]# ceph -s
cluster:
id: 2af51d38-db90-4a57-a43d-ea9f6ebd7482
health: HEALTH_ERR
1 scrub errors
Possible data damage: 1 pg inconsistent
查看原因：
[root@controller1 ~]# ceph health detail
HEALTH_ERR 2 scrub errors; Possible data damage: 2 pgs inconsistent
OSD_SCRUB_ERRORS 2 scrub errors
PG_DAMAGED Possible data damage: 2 pgs inconsistent
pg 9.17 is active+clean+inconsistent, acting [11,9]
pg 9.12b is active+clean+inconsistent, acting [9,11]
分析:
Osd.8 状态发生了down状态，引发了pg损坏
解决：
[root@controller1 ~]# ceph pg repair 9.17
[root@controller1 ~]# ceph pg repair 9.12b