The Logs of the vcenter did rotate after 5MB and generate a new log file. you can figure out the logs from the destination below.
Thank you Anjani
I am trying to search (using Log Entry Contains field top right) for the texts/string within the above logs, but none of them can be found.
Those texts/strings were on Tasks & Events tab of one of my esxi server yesterday. I have searched by selecting each log from the drop down list, but no results though.
There were few errors like these yesterday on Tasks & Events tab of one of the server and I am trying search for a text "ifun_proto" or "Double-Free" or "bitmask" etc
<ERROR> ifun_proto: Timeout in HELLO state
<ERROR> Double-Free @ bitmask (14), bit (0)
In the vSphere client click on File -> Export -> Events, you can specify the exact dates you want to export to a csv in there.