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 custom directives


While directives for hosts such as host_name, alias, and address may be adequate for many purposes, depending on our monitoring requirements, we may sometimes need Nagios Core to be able to refer to other data that's specific to individual hosts but can't be included in one of these directives.

For example, it's common in networking to have a management interface for a device. This is a network interface that links to a network used only by the administrators of the device for the purposes of monitoring and configuring it and is not accessible to users of the service. While we may want to run, for example, check_ping against the public-facing address of a given host, we may also need to verify that a service at a different address on a completely different network is running.

We might have a host configured in the following way referring to a webserver and including a PING check to make sure its public-facing interface with the 203.0.113.1 address is up and running...