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

Monitoring local services on a remote machine with NRPE


In this recipe, we'll learn how to install and run an NRPE (Nagios Remote Plugin Executor) server on a target host, roma.example.net. We'll use this to check the load average on that host with the check_load plugin.

The plugins for these checks will be executed on the target server by the NRPE daemon, but the results will be returned to our Nagios Core monitoring server, olympus.example.net. This requires installing the check_nrpe plugin on the monitoring server and the full Nagios Plugins set (but not Nagios Core itself) on the target server.

This is a reasonably long and in-depth recipe as it involves installing a total of three software packages on two servers.

Getting ready

You will need a monitoring server with Nagios Core 4.0 or newer installed. You should also have a UNIX-like target host that you intend to monitor that can run the NRPE daemon. Most modern UNIX-like systems including Linux and BSD should be able to do this. Both...