How to resolve MON clock skew issue in OCS 4.x ?

Solution Verified - Updated -

Issue

  • ceph -s showing one or more mon are out of time sync

    # ceph -s
      cluster:
        id:     1111111-2222-3333-4444-555556666666
        health: HEALTH_WARN
                clock skew detected on mon.b, mon.c
    
      services:
        mon: 3 daemons, quorum a,b,c (age 22m)
        mgr: a(active, since 82m)
        mds: rhocs-cephfilesystem:1 {0=rhocs-cephfilesystem-b=up:active} 1 up:standby-replay
        osd: 3 osds: 3 up (since 67m), 3 in (since 3M)
        rgw: 1 daemon active (rhocs.cephobjectstore.a)
    
      task status:
    
      data:
        pools:   10 pools, 192 pgs
        objects: 72.33k objects, 276 GiB
        usage:   826 GiB used, 5.2 TiB / 6.0 TiB avail
        pgs:     192 active+clean
    
      io:
        client:   1.3 KiB/s rd, 1.3 MiB/s wr, 2 op/s rd, 21 op/s wr
    

Environment

  • Red Hat Openshift Storage 4.x
  • Red Hat Ceph Storage 4.x

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