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

Configuring host roles using groups


In this recipe, you'll learn how to use the abstraction of host and service groups to your advantage in order to build a configuration where hosts and services can be added or removed more easily. We'll do this by defining roles for hosts using a hostgroup structure and then assigning relevant services to the hostgroup rather than to the hosts individually.

Getting ready

You will need to have a server running Nagios Core 4.0 or later, have access to the command line to change its directories, and understand the basics of how hostgroups and servicegroups work. These are covered in the recipes Creating a new hostgroup and Creating a new servicegroup in Chapter 1, Understanding Hosts, Services, and Contacts.

In this example, we'll create two simple hostgroups; one will be called servers, for which a PING check should be made for its member hosts, and another will be called webservers, which should include HTTP checks for its member hosts. Once this is set up...