RHCA--260 故障排除1 slow ops, oldest one blocked for 1844 sec, mon.clienta has slow ops

RHCA–260 第二题看似是送分题,只要保证ceph环境正常不用做任何事就可以得分.
但始终会有这样或者那样的情况会造成集群状态异常.

现象

[root@serverc ~]# ceph -scluster:id:     ab26a238-1643-11ee-869f-52540000fa0chealth: HEALTH_WARN1 slow ops, oldest one blocked for 1844 sec, mon.clienta has slow opsservices:mon: 4 daemons, quorum serverc.lab.example.com,servere,serverd,clienta (age 7m)mgr: serverc.lab.example.com.iylgwq(active, since 33m), standbys: servere.gadgdlmds: 1/1 daemons up, 1 standbyosd: 9 osds: 9 up (since 30m), 9 in (since 30m)rgw: 2 daemons active (1 hosts, 1 zones)data:volumes: 1/1 healthypools:   11 pools, 273 pgsobjects: 251 objects, 8.1 MiBusage:   222 MiB used, 90 GiB / 90 GiB availpgs:     273 active+cleanprogress:Global Recovery Event (100s)[======================......] (remaining: 23s)

检查发现mon状态不对

[root@serverc ~]# ceph orch ls mon
NAME  RUNNING  REFRESHED  AGE  PLACEMENT  
mon       4/5  9m ago     34m  count:5 

解决过程

1. 同步时间
   这个正式考试应该不会有问题.

ssh root@serverc chronyc -a makestep;ssh root@serverd chronyc -a makestep;ssh root@servere chronyc -a makestep;ssh root@clienta chronyc -a makestep&&ssh root@serverc date ;ssh root@servere date ;ssh root@serverd date ;ssh root@clienta date

2. 调整mon

[root@serverc ~]# ceph orch apply mon --placement="3 serverc.lab.example.com serverd.lab.example.com servere.lab.example.com"
Scheduled mon update...

3. 再次确认

[root@serverc ~]# ceph -scluster:id:     ab26a238-1643-11ee-869f-52540000fa0chealth: HEALTH_OKservices:mon: 3 daemons, quorum serverc.lab.example.com,servere,serverd (age 8s)mgr: serverc.lab.example.com.iylgwq(active, since 35m), standbys: servere.gadgdlmds: 1/1 daemons up, 1 standbyosd: 9 osds: 9 up (since 31m), 9 in (since 32m)rgw: 2 daemons active (1 hosts, 1 zones)data:volumes: 1/1 healthypools:   11 pools, 273 pgsobjects: 251 objects, 8.1 MiBusage:   222 MiB used, 90 GiB / 90 GiB availpgs:     273 active+cleanprogress:Global Recovery Event (3m)[======================......] (remaining: 46s)

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