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

Introduction


Most administrators of midsize networks choose to dedicate an entire server to monitor software and, sometimes, a whole server just for Nagios Core. This is because of the following two main factors that are common to most comprehensive Nagios Core setups:

  • They have a lot of privileges because in order to inspect the running state of so many different hosts and services, they need to be conferred with an appropriate network to those services. This often means that their IP addresses are whitelisted all over the network. A user who is able to assume this privilege could potentially do a lot of damage.

  • They have a lot of work to do and hence ideally have dedicated software and hardware resources to run what can be thousands of host and service checks smoothly and to promptly notice problems and recoveries. If a Nagios Core server is not able to keep up with its check schedule, it could cause delays in notification about very important services.

It's, therefore, very important to...