Book Image

Nagios Core Administration Cookbook - Second Edition

By : Tom Ryder
Book Image

Nagios Core Administration Cookbook - Second Edition

By: Tom Ryder

Overview of this book

Nagios Core is an open source monitoring framework suitable for any network that ensures both internal and customer-facing services are running correctly and manages notification and reporting behavior to diagnose and fix outages promptly. It allows very fine configuration of exactly when, where, what, and how to check network services to meet both the uptime goals of your network and systems team and the needs of your users. This book shows system and network administrators how to use Nagios Core to its fullest as a monitoring framework for checks on any kind of network services, from the smallest home network to much larger production multi-site services. You will discover that Nagios Core is capable of doing much more than pinging a host or to see whether websites respond. The recipes in this book will demonstrate how to leverage Nagios Core's advanced configuration, scripting hooks, reports, data retrieval, and extensibility to integrate it with your existing systems, and to make it the rock-solid center of your network monitoring world.
Table of Contents (18 chapters)
Nagios Core Administration Cookbook Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Using inheritance to simplify configuration


In this recipe, you'll learn how to use inheritance to handle the situation where hosts and services share a lot of values in common, leading to a large amount of undesirable redundancy in configuration.

Some Nagios objects, particularly hosts and services, have a rather long list of possible directives and the default values for these are not always suitable. It's therefore worthwhile to be able to declare the values you want for these directives once and then spend only a few lines on the actual host definition by copying these values from a template, making the configuration shorter and easier to read.

The previous examples in this book demonstrated the use of this in suggesting you inherit from the linux-server host template or the generic-service template for the sake of brevity; in this example, we'll define our own templates and show how these can be used to streamline a configuration.

Getting ready

You will need to have a server running Nagios...