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
About the Author
About the Reviewer

Removing a plugin

In this recipe, we'll remove a plugin that we no longer need as part of our Nagios Core installation. Perhaps it's not working correctly, the service it monitors is no longer available, or there are security or licensing concerns with its usage.

Getting ready

You should have a Nagios Core 4.0 or newer server running with a few hosts and services configured already, and you should have a plugin that you would like to remove from the server. In this instance, we'll remove the no longer needed check_rsync plugin from our Nagios Core server.

How to do it...

We can remove a plugin from our Nagios Core instance as follows:

  1. Remove any part of the configuration that uses the plugin, including hosts or services that use it for a check_command and command definitions that refer to the program. As an example, the following definition for a command would no longer work after we removed the check_rsync plugin:

    define command {
        command_name  check_rsync
        command_line  $USER1$/check_rsync...