What you need for this book

In an attempt to work with a "standard" installation of Nagios Core, this book's recipes assume that Nagios Core 4.0 or later and the Nagios Plugins set have been installed in /usr/local/nagios by the Nagios Quickstart Guides available at https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/quickstart.html.

If your system's package repositories include a package for Nagios Core 4.0 or later that you would prefer to use, this should still be possible, but the paths of all the files are likely to be very different. This is known to be a particular issue with the nagios3 package on Debian or Ubuntu systems. If you are familiar with the differences in the installation layout that your packaging system imposes, then you should still be able to follow the recipes with only a few path changes.