icinga2/doc/2.1.3-setting-up-check-plug...

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Setting up Check Plugins

On its own Icinga 2 does not know how to check external services. The Nagios Plugins Project provides an extensive set of plugins which can be used by Icinga 2 to check whether services are working properly.

The recommended way of installing these standard plugins is to use your distribution's package manager. For your convenience here is a list of package names for some of the more popular operating systems/distributions:

OS/Distribution Package Name Installation Path
RHEL/CentOS nagios-plugins /usr/lib/nagios/plugins
Debian nagios-plugins /usr/lib/nagios/plugins
FreeBSD nagios-plugins /usr/local/libexec/nagios
OS X (MacPorts) nagios-plugins /opt/local/libexec

Depending on which directory your plugins are installed into you may need to update the plugindir macro in your Icinga 2 configuration. This macro is used by the service templates contained in the Icinga Template Library to determine where to find the plugin binaries.