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

Allowing and submitting passive checks


In this recipe, you'll learn how to configure Nagios Core to accept passive checks for a service. This allows both users and external applications to directly submit the results of checks to Nagios Core, rather than have the application seek them out itself through polling with active checks, which are performed via plugins such as check_http or check_ping.

We'll show you one simple example of a passive check: flagging a service called BACKUP for an existing host. We'll show you how to do this via a web interface, which is very easy, and via the external commands file, which is slightly more complex but much more flexible and open to automation.

The idea is that when a user or process receives confirmation that the backup process on a host has completed correctly, the user or process is able to supply a check result of OK directly to the service without Nagios Core needing to poll anything by itself.

Getting ready

You should be running a Nagios Core 4.0...