service checks randomly disappear

[Andreas Ericsson]

aloclarit at aol.com wrote:
> well i'll be damned ! You were right!
> Question is how the hell did that happen ? I never used anything but the 
> init script provided to restart nagios.
> I had to kill -9 a whole bunch of those procs. the thing is I always 
> assumed it is totally normal for the nagios proc to spawn few
> child procs if it gets busy but i guess that's really a problem.


No it isn't. Nagios does spawn child-processes to do its checking. It's 
when you land with several master processes that you end up being in 
trouble.

> I tried 
> /etc/init.d/nagios stop and then ps -ef | grep nagios.
> no proc shows up now and even if I do a restart which i've been doing it 
> seems to kill all procs properly so how did I end up with 5
> nagios procs in the first place...hmm.

If you're using the LinuxThreads library by Xavier Leroy, this is quite 
normal, as each thread will show up as a separate process. If you're 
using Native Posix Thread Library by Ulrich Drepper (only works with 
Linux 2.6.4 and later), it will show up as a single process.

> Well al least I know what to look for now..thanks but I don't like it. A 
> killall -9 nagios should do the trick though or pkill -U nagios...time 
> to modify the init script.
> 
> btw. I still don't get why only 2 services were affected out of over 100.
> 

Because those two services were known by the "new" nagios instance while 
the old one had no clue about them. I expect those were the last two 
services you added to config.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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