SOD Logs Troubleshooting

Hi Folks,

Need some help, I'm trying to troubleshoot one of the SOD Log which we received in our Splunk tool as below.

notice sod[10366]: 010c006d:5: Leaving Standby for Active (best load): NextActive

But upon logging to the box, I could not find it. Tried searching in entire /var/log/ltm with grep, no luck. The box is running on 11.5.3 HA Pair. Where do I see the SOD logs.

 less ltm | grep sod
 less ltm | grep Leaving
 less ltm* | grep Leaving
 less ltm* | grep Standby
 less ltm* | grep "Leaving Standby for Active"

Doing a wildcard search takes lot of time with no result.

less /var/log/* | grep "Leaving Standby for Active"

Why do I observe the above mentioned log, there is no Failover triggered.