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 states for notification

In this recipe, we'll learn how to refine which notifications are sent by a host or service and which notifications should be received by a particular contact. We'll do this by changing both the notification types that hosts and services should generate and, to complement that, the notification types that a contact should be configured to receive.

Getting ready

You should have a Nagios Core 4.0 or newer server, with at least one host configured already. We'll use the example of, a host defined in its own file, which we'll configure to send only the DOWN and RECOVERY notifications, ignoring other notifications such as WARNING and UNKNOWN. It will send the notifications to an existing contact called john; we'll ensure that this contact is configured to receive those notifications.

How to do it...

We can configure the notification types for our host as follows:

  1. Change to the objects configuration directory for Nagios Core. The default is /usr/local...