nagios check_* and files limits

[Ian Orszaczki]

Hi, we had the same problem and tried to solve it with limits.d but it
doesn't seem to work when nagios starts from the init script.

So we added ulimits commands to the init script and it works.

# Set limits for openfiles and processes as it is not inherited from
limits.d
ulimit -H -n  131072
ulimit -S -n  131072

ulimit -H -u  16384
ulimit -S -u  16384

Cheers,
Ian O





On Thu, Dec 6, 2012 at 10:03 AM, Mike W <uce_mike at yahoo.com> wrote:

> I have been working to try and resolve a problem I am having with
> commands.conf entries (check_* commands). The full discussion I have had
> with more detailed notes is here:
>
> http://support.nagios.com/forum/viewtopic.php?f=7&t=8200
>
> One of the members suggested at this point I should post to the devel list.
>
> The short version is this. I am getting "Warning: Return code of 127 for
> check of service" in the nagios.log. After enabling debug logs I further
> ran the command manually as user nagios and it ran fine (no permissions
> errors or missing script as normal indicated by 127 error).
>
> End result seems to be the problem is max open files. Normally this
> would be fixed by increasing these in /etc/security/limits.conf for user
> nagios which we did (and rebooted). However this did not resolve the
> 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.
>
> As I said, manually su'ing to nagios and running the script things
> worked fine. ulimit -a also showed the proper value. It seems to only be
> an issue when it is run from nagios.
>
> We are running on RHEL 6.2, using Nagios 3.4.3RC1, nagios-plugins 1.4.16.
>
> The full steps I took are listed in the support forums but if you have
> questions for me I would be more than happy to answer them. At this
> point I am at a loss as to what this could be.
>
> --
>
> Mike Wilson
>
>
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