Hi there,
I have a server that regularly runs jobs to import email via IMAP from
remote servers.
The cron runs a bash scrip that in turn iterates through the customer's
install directories and then goes through each mail box that users have
configured and parses the email. This is done by going back to get 100
email headers checking that the message ID hasn't been imported and if
not getting the full body.
The problem is that these jobs seem to run over each other and then
eventually (occasionally) it will hang the server.
I've tried a few things like getting less headers, spacing the cron jobs
out and using lock files but neither combination has resolved this
issue. I suspect that some of the IMAP services take too long to respond
or rate limit connections (but since I don't control them I can't be sure).
I am looking for suggestions as to:
- How to fix the underlying problem
- How to configure Nagios to monitor specific processes
Many thanks
Piers
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