Icinga 2 provides configuration files for some commonly used features.

These are installed in the /etc/icinga2/features-available directory and can be enabled and disabled using the icinga2 feature enable and icinga2 feature disable CLI commands, respectively.

The icinga2 feature enable CLI command creates symlinks in the /etc/icinga2/features-enabled directory which is included by default in the example configuration file.

You can view a list of enabled and disabled features:

 # icinga2 feature list
 Disabled features: api command compatlog debuglog graphite icingastatus ido-mysql ido-pgsql livestatus notification perfdata statusdata syslog
 Enabled features: checker mainlog notification