nagios_plugins - nx.beandog.org

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====== Nagios plugins ======

  * [[Nagios]]
  * [[NRPE]]

==== check_disk ====

Check the amount of disk space available.

Warning on 20% remaining, critical on 10% remaining, looking at path "/":

<code>
check_disk -w 20% -c 10% -p /
</code>

==== check_load ====

Check the current system load average. The load average format is the same used by "uptime" and "w".

  * **-w WLOAD1,WLOAD5,WLOAD15** - Exit with WARNING status if load average exceeds WLOADn
  * **-c CLOAD1,CLOAD5,CLOAD15** - Exit with CRITICAL status if load average exceed CLOADn
  * **-r** - Divide the load averages by the number of CPUs (when possible)

<code>
check_load -r -w 2,1.5,1 -c 4,3,2
</code>

==== check_procs ====

Check for running processes.

Some available arguments:

  * **-w [num]:[num]** - warning for value in range
  * **-c [num]:[num]** - critical warning for value in range
  * **-u <uid>** - check for user ID
  * **-a <argument>** - only check for processes with specified arguments
  * **-C <command>** - only check for exact match of command, without path

** OpenSSH **

SSHD will have one proc for the master daemon, and one for each user login as well. So setting a minimal range of 1 will check if it is running at all:

<code>
check_procs -c 1: -u root -C sshd -a /usr/sbin/sshd
</code>

** ntpd **

<code>
check_procs -c 1: -u root -C ntpd -a /usr/sbin/ntpd
</code>

** syslog-ng **

<code>
check_procs -c 1: -u root -C syslog-ng -a /usr/sbin/syslog-ng
</code>

==== check_swap ====

Check swap space.

Warn on 20% available remaining, critical on 10%:

<code>
check_swap -w 20% -c 10%
</code>

Trace: • firewall • pkg • freebsd_packages • lm-sensors • webmin

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