Book Image

Nagios Core Administration Cookbook

By : Tom Ryder
Book Image

Nagios Core Administration Cookbook

By: Tom Ryder

Overview of this book

Network monitoring requires significantly more than just pinging hosts. This cookbook will help you to comprehensively test your networks' major functions on a regular basis."Nagios Core Administration Cookbook" will show you how to use Nagios Core as a monitoring framework that understands the layers and subtleties of the network for intelligent monitoring and notification behaviour. Nagios Core Administration Guide introduces the reader to methods of extending Nagios Core into a network monitoring solution. The book begins by covering the basic structure of hosts, services, and contacts and then goes on to discuss advanced usage of checks and notifications, and configuring intelligent behaviour with network paths and dependencies. The cookbook emphasizes using Nagios Core as an extensible monitoring framework. By the end of the book, you will learn that Nagios Core is capable of doing much more than pinging a host or to check if websites respond.
Table of Contents (18 chapters)
Nagios Core Administration Cookbook
About the Author
About the Reviewers


Once hosts and services are configured in Nagios Core, its behavior is primarily dictated by the checks it makes to ensure that hosts and services are operating as expected, and the state it concludes these hosts and services must be in as a result of those checks.

How often it's appropriate to check hosts and services, and on what basis it's appropriate to flag a host or service as having problems, depends very much on the nature of the service and the importance of it running all the time. If a host on the other side of the world is being checked with PING, and during busy periods its round trip time is over 100ms, then this may not actually be a cause for concern at all, and perhaps not something to even flag a WARNING state over, let alone a CRITICAL one.

However, if the same host were on the local network where it would be appropriate to expect round trip times of less than 10ms, then a round trip time of more than 100ms could well be considered a grave cause for concern...