Re: [Nagios-devel] nagios check_* and files limits

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Re: [Nagios-devel] nagios check_* and files limits

Postby Guest » Fri Dec 07, 2012 12:02 pm

On 06.12.2012 00:03, Mike W wrote:
> End result seems to be the problem is max open files. Normally this=20
> would be fixed by increasing these in /etc/security/limits.conf for use=
> nagios which we did (and rebooted). However this did not resolve the=20
> problem. I created a check script at that point to output ulimit -a and=
> it repeatedly showed that the max was still 1024 even tho we had set it=
> to a greater value.

According to the docs that I have at my fingertips (which mightn't apply
to all other distribs, mind you), limits.conf affects PAM. I don't think
that Nagios, when started as root during the boot process and probably
setreuid()ing to user nagios, ever touches PAM. You might want to try
increasing the ofiles limit for *root* to see whether that yields the
result you expect. Since you intend to raise the limit above what
currently is your default *hard* limit, at least that latter *must* be
raised accordingly by OS means.

Having that said, when some daemon - or, for that matter, plugin - needs
some nonstandard per-process configuration, I don't see anything wrong
with configuring it someplace where it does *not* affect the rest of the
system (i.e., in /etc/init.d/nagios or the plugin itself). Manually
adding "umask 022" to all init scripts was considered good practice back
in the SunOS days ... :-}

J. Bern
*NEU* - NEC IT-Infrastruktur-Produkte im :
Server--Storage--Virtualisierung--Management SW--Passion for Performance
Jochen Bern, Systemingenieur --- LINworks GmbH
Postfach 100121, 64201 Darmstadt | Robert-Koch-Str. 9, 64331 Weiterstadt
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