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
About the Author
About the Reviewer


A major downside of Nagios Core's configuration being so flexible is that without proper management, the configuration can easily balloon into hundreds of files with thousands of objects, all having unclear dependencies. This can be frustrating when you attempt to make significant changes to a configuration or even for something as simple as removing a host or sifting through dependencies to find what's causing errors in the configuration that prevents you from restarting.

It's therefore important to build your configuration carefully using as much abstraction as possible to allow adding, changing, and removing hosts and service definitions from the configuration painlessly and to avoid a duplication of configuration. Nagios Core provides a few ways of dealing with this, most notably in the judicious use of groups and templates for fundamental objects. Duplication of network-specific and volatile data, such as passwords, is also to be avoided and this is best done with the...