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

[Marcel Mitsuto Fucatu Sugano]

Sorry about this, but...

On Fri, 2006-06-23 at 13:01 -0300, Marcel Mitsuto Fucatu Sugano wrote:
> 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?
> 
> 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.

This is what i'm talking about:

nagios    2223     1  2 13:01 ?        00:00:37 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   28074     1  0 13:21 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   30447     1  0 13:22 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   30592     1  0 13:22 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   30865  2223  0 13:22 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   30867 30865  0 13:22 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei4-b Cron Daemon OK proc=cron n_procs=1 threads=1 mem_size=240 mem_vsize=1736 mem_r
nagios   30868 30867  0 13:22 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei4-b Cron Daemon OK proc=cron n_procs=1 threads=1 mem_size=240 mem_vsize=1736 mem_r
nagios   30869 30867  0 13:22 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei4-b Cron Daemon OK proc=cron n_procs=1 threads=1 mem_size=240 mem_vsize=1736 mem_r
[some other time]
nagios    2223     1  3 13:01 ?        00:00:42 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   15338     1  0 13:25 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   15661  2223  0 13:25 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios   15663 15661  0 13:25 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei18-b Disk Space OK (/ 14 90)(/boot 36 90)(/export 7 90)(/opt 46 90)(/usr 25 90)(/v
nagios   15664 15663  0 13:25 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei18-b Disk Space OK (/ 14 90)(/boot 36 90)(/export 7 90)(/opt 46 90)(/usr 25 90)(/v
nagios   15665 15663  0 13:25 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result sensei18-b Disk Space OK (/ 14 90)(/boot 36 90)(/export 7 90)(/opt 46 90)(/usr 25 90)(/v
[one minute after a restart]
nagios     373     1  5 13:27 ?        00:00:01 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios    2675   373  0 13:28 ?        00:00:00 /opt/nagios/bin/nagios -d /opt/nagios/etc/nagios.cfg
nagios    2676  2675  0 13:28 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result shogun96-c PING OK OK - 172.27.248.195: rta 1.849ms, lost 0%
nagios    2679  2676  0 13:28 ?        00:00:00 /bin/sh /opt/nagios-2.4/libexec/submit_check_result shogun96-c PING OK OK - 172.27.248.195: rta 1.849ms, lost 0%


As you can see, there is something very strange.

The two first, are messages coming from syslog-ng, and the third is
active checking. Stracing pids did not lead to anything conclusive, as
each process is acting within their processing loop.

Will try to recompile Nagios, from the latest cvs.

TIA.


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