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