BIG-IP 冗長両機の時差が3秒以上あるとGUI及びCLIにて警告が出るようになりました

Ver13.0.0より、冗長両機の時差が3秒以上あるとGUI及びCLIにて警告が出るようになりました。

K81160517: Modifying the ConfigSync time threshold
https://support.f5.com/csp/article/K81160517

GUI

CLI

[root@bigip03:Peer Time Out of Sync:In Sync] config #

CLIでの時差確認コマンド

root@(bigip03)(cfg-sync In Sync)(Active)(/Common)(tmos)# show cm device

---------------------------------------------------
CentMgmt::Device: bigip03.lab.local
---------------------------------------------------
Hostname                          bigip03.lab.local
Mgmt IP                           10.2.0.83
Alternate Mgmt IP                 None
Configsync IP                     10.2.22.233
Mirroring IP                      10.2.22.233
Mirroring Secondary IP            ::
Failover Multicast IP             ::
Failover Unicast IP(s)            10.2.22.233
Device HA State                   active
Device HA Load Capacity           0
Device Current Load Factor        1
Device Next Active Load Factor    0
Time Delta to Local Device (sec)  -

---------------------------------------------------
CentMgmt::Device: bigip04.lab.local
---------------------------------------------------
Hostname                          bigip04.lab.local
Mgmt IP                           10.2.0.84
Alternate Mgmt IP                 None
Configsync IP                     10.2.22.234
Mirroring IP                      10.2.22.234
Mirroring Secondary IP            ::
Failover Multicast IP             ::
Failover Unicast IP(s)            10.2.22.234
Device HA State                   standby
Device HA Load Capacity           0
Device Current Load Factor        0
Device Next Active Load Factor    1
Time Delta to Local Device (sec)  0   <----ここです

root@(bigip03)(cfg-sync In Sync)(Active)(/Common)(tmos)#

以下DB値で設定されています

root@(bigip03)(cfg-sync In Sync)(Active)(/Common)(tmos)# list sys db configsync.timesyncthreshold
sys db configsync.timesyncthreshold {
    value "3"
}
root@(bigip03)(cfg-sync In Sync)(Active)(/Common)(tmos)#

対処方法

NTPを設定して時刻同期しましょう。