Grouping configuration files in directories
In this recipe, we'll learn to group
configuration files in directories to greatly ease the management of configuration. We'll do this by configuring Nagios Core to load every file it can find ending with a .cfg extension in a given directory, including recursing through subdirectories. The end result will be that to have Nagios Core load a file, we only need to include it somewhere in that directory with an appropriate extension; we don't need to define exactly which files are being loaded in nagios.cfg.
Getting ready
You will need to have a server running Nagios Core 3.0 or later, and have access to the command line to change its configuration. You should be familiar with the loading of individual configuration files using the cfg_file directive in /usr/local/nagios/etc/nagios.cfg.
In particular, you should have a directory prepared that contains all of the configuration files you would like to be loaded by Nagios Core. In this example, we'll prepare...
