Hibrid configuration, active and passive (syslog-ng) and forkedprocesses not terminating

Marcel Mitsuto Fucatu Sugano msugano at uolinc.com
Fri Jun 23 18:01:07 CEST 2006


Hello list.

Is there someone having problems with Nagios 2.4 forking processes that
simply does not terminate in a hibrid monitoring configuration of some
active checks and a lot of passive checks?

Nagios 2.4, running on SuSE9.3.

Passive checks is coming from syslog-ng, from about 200 hosts. And for
each host, there is about 3 active checks.

It seems that when Nagios forks to execute an active check, the forked
process did not terminate itself. Therefore it begins to double
submitting check results to our central Nagios, and messing up with
services statuses becoming staled.

Someone have any advice on how to detect forked Nagios processes that
will mess with central Nagios freshness service checking? 

Just grepping -v `head -n 1 nagiosl.lock` file isn't enough, as some
forked process might be actively checking something. But, if that
process keep itself running, it should be killed. Still don't know why
the forked process did not terminate itself, but i think it might have
something to do with syslog-ng, but can't tell for sure.

TIA,
Marcel


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