Chapter 2. Working with Commands and Plugins
In this chapter, we will cover the following recipes:
- Finding a plugin
- Installing a plugin
- Removing a plugin
- Customizing an existing command
- Using an alternative check command for a host
- Writing a new plugin from scratch
Introduction
Nagios Core is perhaps best thought of less as a monitoring tool, and more as a monitoring framework. Its modular design can use any kind of program which returns appropriate values based on some kind of check, such as a check_command plugin for a host or service. This is where the concepts of commands and plugins come into play.
For Nagios Core, a plugin is any program that can be used to gather information about a host or service. To ensure that a host was responding to PING ...
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