Nagios

Nagios is a OS monitoring system

=Random Notes ill clean up later =) = This is a list of random notes i am using whilst deploying Nagios in a customer environment, I will clean these up in to a bit of a pholisy later =)

Check your config
before reloading its all ways a good idea to check your config

[Nagios base directory]/bin/nagios -v [Nagios base directory]/etc/nagios.cfg eg /opt/nagios/bin/nagios -v /opt/nagios/etc/nagios.cfg

Define a new service check for a group
this will add a new service check to all hosts in the solaris host group

define service { service_description    if_config display_name           if Config check_command          check_nrpe!check_ifcfg use                    generic-service hostgroup_name         solaris }

Restarting Nagios
After adding a new service check or changing the config in general, you will have to make Nagios reload its config files or restart Nagios. Most times a reload is enough. So: /etc/init.d/nagios reload or, if that doesnt work, /etc/init.d/nagios restart This applies to a Redhat or Debian based Linux distribution. The init scripts might be in other places on different operating systems or distributions.

Nagios and Mediawiki
Nagios/Mediawiki

Checks
see: Nagios/checks

Links

 * nagios.org
 * Quickstart guide