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
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Building groups using regular expressions


In this recipe, we'll learn a shortcut for building groups of hosts using regular expressions tested against their hostnames.

This recipe is likely only of use to you if you use a naming convention for your hosts that allows them to be reasonably grouped by location, function, or some other useful metric by a common string in their hostnames.

Getting ready

You will need to have a server running Nagios Core 3.0 or later, have access to the command line to change its configuration, and understand the basics of how hostgroups and servicegroups work. These are covered in the Creating a new hostgroup and Creating a new servicegroup recipes in Chapter 1.

In this example, we'll group three existing hosts named web-server-01, web-server-02, and web-server-03 into a new hostgroup, web-servers, based only on their hostnames.

It would help to have some familiarity with regular expressions, but the recipe includes a simple example, which should meet many use cases...