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Nagios Core Administration Cookbook

Nagios Core Administration Cookbook

By : Tom Ryder
4.6 (9)
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Nagios Core Administration Cookbook

Nagios Core Administration Cookbook

4.6 (9)
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)
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Nagios Core Administration Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1
Index

Setting up a redundant monitoring host


In this recipe, we'll learn how to implement a simple kind of redundancy for Nagios Core, by running a second Nagios Core instance with a near-identical configuration on another machine.

This may seem like it would not need a recipe to implement. It should be reasonably straightforward to simply copy over the configuration for a Nagios Core system and run it concurrently. There are two main problems with this:

  • Every problem detected on the network will fire notifications events twice. The administrator charged with looking after the pager might well find this unbearable!

  • Everything will be checked twice. On smaller networks with simple checks, this may not be too much of a concern, but it could be an issue on larger, busier networks.

This recipe will solve the first problem by configuring the slave monitoring server to suppress notifications until it detects an issue with the master server. In the There's more… section, we'll discuss extending this solution...

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