Ceph 集群提示检测到时钟偏移告警

现象：

  Ceph集群健康状态提示“clock skew detected on mon.hydrogen2”

[root@hydrogen1 ~]# ceph -s
  cluster:
    id:     fe840364-7bc6-11ef-98cd-e43d1a0a3210
    health: HEALTH_WARN
            clock skew detected on mon.hydrogen2

  services:
    mon: 3 daemons, quorum hydrogen1,hydrogen2,hydrogen3 (age 2m)
    mgr: hydrogen1.knyqls(active, since 2m), standbys: hydrogen2.desouk
    osd: 12 osds: 12 up (since 119s), 12 in (since 3d)

  data:
    pools:   2 pools, 65 pgs
    objects: 387.75k objects, 1.5 TiB
    usage:   4.3 TiB used, 170 TiB / 175 TiB avail
    pgs:     64 active+clean
             1  active+clean+scrubbing+deep

原因：

  集群节点之间的时钟存在偏移不一致导致

解决：

  根据提示存在偏移的节点上重启时间效验服务同步时间后解决

[root@hydrogen2 ~]# systemctl restart chronyd.service
[root@hydrogen2 ~]# ceph -s
  cluster:
    id:     fe840364-7bc6-11ef-98cd-e43d1a0a3210
    health: HEALTH_OK

  services:
    mon: 3 daemons, quorum hydrogen1,hydrogen2,hydrogen3 (age 7m)
    mgr: hydrogen1.knyqls(active, since 7m), standbys: hydrogen2.desouk
    osd: 12 osds: 12 up (since 7m), 12 in (since 3d)

  data:
    pools:   2 pools, 65 pgs
    objects: 387.67k objects, 1.5 TiB
    usage:   4.3 TiB used, 170 TiB / 175 TiB avail
    pgs:     65 active+clean