I can see how to alert when a regex appears in a log file. I can see how to alert when a regex does not appear on EVERY line of a log file. But I can't see how to alert when a regex has not appeared in a log file over a period of time.
I could create a bash script which regex's the file for me, and writes out to a file which monit monitors, but would rather keep the solution within monit.
Any help would be appreciated.