Book Image

Nagios Core Administration Cookbook

By : Tom Ryder
Book Image

Nagios Core Administration Cookbook

By: Tom Ryder

Overview of this book

Network monitoring requires significantly more than just pinging hosts. This cookbook will help you to comprehensively test your networks' major functions on a regular basis."Nagios Core Administration Cookbook" will show you how to use Nagios Core as a monitoring framework that understands the layers and subtleties of the network for intelligent monitoring and notification behaviour. Nagios Core Administration Guide introduces the reader to methods of extending Nagios Core into a network monitoring solution. The book begins by covering the basic structure of hosts, services, and contacts and then goes on to discuss advanced usage of checks and notifications, and configuring intelligent behaviour with network paths and dependencies. The cookbook emphasizes using Nagios Core as an extensible monitoring framework. By the end of the book, you will learn that Nagios Core is capable of doing much more than pinging a host or to check if websites respond.
Table of Contents (18 chapters)
Nagios Core Administration Cookbook
About the Author
About the Reviewers

Dynamically building host definitions

In this recipe, we'll learn one possible method of building Nagios configuration dynamically, to avoid having to compose or copy-paste a lot of directives for new hosts or services. In other words, this recipe is about generating configuration using templates.

To demonstrate how this is useful, we'll use the m4 macro language utility, which should be available on virtually any UNIX-like system, including GNU/Linux and BSD. As a tool designed for macro expansion, m4 is particularly well-suited to creating verbose plain text configuration files such as the ones used by Nagios Core.

The principles here should apply just as easily to your favored programming or templating language, perhaps Python or Perl, or shell scripts.

Getting ready

You will need to have the m4 macro language tool available to you, preferably but not necessarily on the same system as the one running Nagios Core. It is a very standard tool and should be already installed, or available as...