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ThatGraemeGuy
byThatGraemeGuy, March 26, 2012
This doesn't actually work, although you may not realise it because it *seems* to work just fine.
Postfix queue directories are only readable by root and the postfix user. NRPE commands are executed by the nagios user, which cannot see inside postfix's queue directories.
Normal user, shows 0 in all queues:
$ /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 0 maildrop queue messages: 0 deferred queue messages: 0 bounce queue messages: 0
Nagios user, shows 0 in all queues:
$ sudo -u nagios /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 0 maildrop queue messages: 0 deferred queue messages: 0 bounce queue messages: 0
As root, reports correct numbers:
$ sudo /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 1358 maildrop queue messages: 0 deferred queue messages: 2922 bounce queue messages: 0
Postfix queue directories are only readable by root and the postfix user. NRPE commands are executed by the nagios user, which cannot see inside postfix's queue directories.
Normal user, shows 0 in all queues:
$ /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 0 maildrop queue messages: 0 deferred queue messages: 0 bounce queue messages: 0
Nagios user, shows 0 in all queues:
$ sudo -u nagios /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 0 maildrop queue messages: 0 deferred queue messages: 0 bounce queue messages: 0
As root, reports correct numbers:
$ sudo /usr/lib/nagios/plugins/check_postfix_queue
OK: incoming queue messages: 0 active queue messages: 1358 maildrop queue messages: 0 deferred queue messages: 2922 bounce queue messages: 0
Owner's reply
Funny, I may seem to imagine the last warnings Nagios complained about when the queue reached my thresholds. Futhermore,just fix your permissions (e.g. groups and adding the nagios user to the correct group.) If you use Nagios to monitor queues, you'd better be able to fix these "problems". If not, don't you even think about using Nagios. Makes me wonder how you fixed it with the other plugins available.
