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

Choosing icons for hosts

In this recipe, you'll learn how to select graphics for hosts to appear in various parts of the Nagios Core web interface. This is done by adding directives to a host to specify the paths to appropriate images to represent it.

Adding these definitions has no effect on Nagios Core's monitoring behavior; they are mostly cosmetic changes, although it's useful to see at a glance whether a particular node is a server or a workstation, particularly on the network map.

Getting ready

You will need to run Nagios Core 4.0 or a newer server and have access to its web interface. You must also be able to edit the configuration files for the server.

It's a good idea to verify that you actually have the required images installed. The default set of icons is included in /usr/local/nagios/share/images/logos. Don't confuse this with the directory above it, images, which contains images used as part of the Nagios Core web interface itself.

In the logos directory, you should find a number...