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

Introduction


In addition to being useful as a standalone monitoring framework, Nagios Core has a modular design that allows both interaction with and extension to other programs and tools. It does so predominantly using its external command file to control the behavior of the server.

One of the most useful ways of interacting with the Nagios Core server in this way is through the use of passive checks or by checking results for hosts and services that are submitted to the server directly, rather than as the result of the server's own active checks.

The simplest application of the idea of passive checks is to monitor a process that might take an indeterminate amount of time to run and hence resists active checking; instead of the service making active checks of its own, the service accepts a check result submitted by another application, perhaps something like a backup script after it has completed its run. These check results can be sent and accepted via an add-on called NSCA (the Nagios Service...