We're finding problems with the way monit is bringing mysql back up after restarting.
Occasionally, our mysql server will hit >98% CPU time for a sustained period. We have a rule in monit which will restart mysql after any odd behaviour, and when this happens we find that occasionally mysql is brought up and accepts connections but not queries.
I'm wondering whether there's any way to test with monit that mysql is executing queries properly? From the command-line I can execute the following:
mysql -e "show databases"
which will return a result if mysql is ok, or will return a string starting with "ERROR" if there's a problem.
Based on this information, would it be possible to test if mysql is accepting queries with monit?
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*Phillip B Oldham*
The Activity People
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