Nagios Core Administration Cookbook

The ideal book for System Administrators who want to move their network monitoring to an advanced level. This book covers the powerful features and flexibility of Nagios Core, and its recipes can be applied to virtually any network.

Key Features

• Monitor almost anything in a network
• Control notifications in your network by configuring Nagios Core
• Get a handle on best practices and time-saving configuration methods for a leaner configuration
• Use the web interface to control notification behaviour on the fly and for scheduled outages, without restarts
• Pull Nagios Core's data into a database to write clever custom reports of your own devising

Book Description

What you will learn

• Finding, installing, and writing your own plugins, and learning to reference them as Nagios Core commands for use as host and service checks, including workarounds for making checks through difficult network layouts such as those using Network Address Translation.
• Managing notifications to send the right kind of notifications to the right people at the right time, and defining contact methods besides simple email messages, including an example of automatic contact rotation.
• In-depth examples of using the standard set of Nagios Plugins for common network monitoring needs, with discussion of generic methods for monitoring the results of SNMP queries.
• Remote monitoring methods to handle the situations where Nagios Core cannot directly check a service s status over the network, to check things such as database servers that only listen locally, or hardware devices with no SNMP OIDs exported.
• Defining network structure and dependencies in Nagios Core to enable it to perform its notification behavior more intelligently, and allow you to very quickly find the "root" of particular problems; also how to reflect this structure in the network map once defined, and even decorate it.
• Best practices for managing Nagios Core configuration to make it leaner, more robust, and better suited to programatically generating configuration as specified by other systems.
• Automating other interactions with Nagios Core, including using passive checks to track tasks being performed both locally and in other parts of the network, or running scripts automatically in response to checks; also includes discussion of developing your own reports or vizualisations using automatically exported data from the system.

Who this book is for

This book is for System Administrators who are looking for recipes to help them deal with advanced network monitoring issues with Nagios Core.