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

Monitoring mail services

In this recipe, we'll learn how to monitor three common mail services for a nominated host: SMTP, POP, and IMAP. We'll also see how to use the same structure to include additional checks for secure, encrypted versions of each of these services: SMTPS, POPS, and IMAPS.

For simplicity, we'll assume in this recipe that all three of these services are running on the same host, but the procedure will generalize easily for the common case where there are designated servers for one or more of the previously mentioned functions.

Getting ready

You should have a Nagios Core 4.0 or newer server with at least one host configured already. We'll use the example of, a host defined in its own file. You should also understand the basics of how hosts and services relate, which is covered in the recipes in Chapter 1, Understanding Hosts, Services, and Contacts.

Checking the connectivity for the required services on the target server is also a good idea to ensure that the...