Book Image

Learning Nagios 3.0

Book Image

Learning Nagios 3.0

Overview of this book

Table of Contents (16 chapters)
Learning Nagios 3.0
Credits
About the Author
About the Reviewer
Preface

Chapter 5. Advanced Configuration

Any experienced administrator knows that there is a huge difference between a working system and a properly configured system. This chapter describes some guidelines which will help you migrate from small (and increasing over time) Nagios setups to a flexible model using templates and grouping effectively. Using this advice will help you and your team to survive the switch from monitoring only critical services to checking the health of the majority of your IT infrastructure.

Things that worked fine when you monitored ten hosts and fifty services might not work when your configuration grows. It is possible to define hundreds of hosts along with thousands of services by hand. Maintaining and applying changes to such configurations is a nightmare, though — imagine going through all of these host definitions just to change the notification interval or retry count for all of them.

When you manage a large number of objects, it is essential to be able to set parameters...