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

Defining an escalation for repeated notifications

In this recipe, we'll learn how to arrange a Nagios Core configuration such that after a certain number of repetitions, notifications for problems on hosts or services are escalated to another contact, instead of (or in addition to) the normally defined contact. This is done by defining a separate object type called a host or service escalation.

This kind of setup could be useful for alerting more senior networking staff of an unsolved problem that a less experienced person is struggling to fix and can also function as a "safety valve" to ensure that problem notifications for hosts eventually do reach someone else if they remain unfixed.

Getting ready

You should have a Nagios Core 4.0 or newer server, with at least one host or service configured already, and at least two contact groups — one for the first few notifications, and one for the escalations. You should understand how notifications are generated and sent to the contacts and contact_groups...