Problems with FreeBSD and Nagios

[Jonathan Call]

I scanned the mailing list trying to find a solution for this. I found a
brief discussion where someone had the same problem but there was
nothing really discussed what was potentially wrong.

My system: 
Dual 2.8GHz P4 processors
4GB of RAM
FreeBSD 6.1-RELEASE-p10

Running processes:
Nagios 2.6 (installed from ports without embedded perl or nanosleep)
One mysqld process for the nagiosweb utility
A few NSCA daemon processes for passive checking
A backup tool daemon
Apache+modssl (latest from ports)
Basic FreeBSD services (sshd, sendmail, etc.)

Problem:
Random service and host check control processes will lock up and 'spin'
on the CPU. This is really bad when a host check does it because it
brings all checks to a halt. It doesn't seem to even notice that all
checks have gone stale.

It will look like this in top:

  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU
COMMAND
94068 nagios      1 116    0  7500K  6748K CPU2   0 727:37 30.15% nagios
94082 nagios      1 116    0  7500K  6748K CPU2   0 734:28 32.55% nagios
94104 nagios      1 116    0  7500K  6748K CPU2   0 845:21 37.42% nagios
75338 nagios      5  20    0  7500K  6776K kserel 0  91:33  0.00% nagios

In this example the main nagios pid is 75338. The hung service and/or
host processes are the other ones.

The service checks are almost entirely custom scripts, but the host
check is a standard check_ping that comes with the nagios program.

Any ideas on how to figure out which service or host check is hung? Or
how to deal with this problem at all?

Jonathan Call
Network Engineer - NTT/Verio
801.437.7476



-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null