As part of my professional career, I've been responsible for monitoring various servers, devices and services. As part of that I've used Nagios as part of my toolset.
This page is about gathering some information, tools and ideas about Nagios in an operational setting.
Although Nagios relies on text files, editing them can be a challenge due to the multi-line context. I ended up writing a script, that allows me to edit Nagios configuration files in a fashion similar to sed.
That tool is Naged.