Book Image

Cacti 0.8 Beginner's Guide

By : Thomas Urban
Book Image

Cacti 0.8 Beginner's Guide

By: Thomas Urban

Overview of this book

Cacti is a performance measurement tool that provides easy methods and functions for gathering and graphing system data. You can use Cacti to develop a robust event management system that can alert on just about anything you would like it to. But to do that, you need to gain a solid understanding of the basics of Cacti, its plugin architecture, and automation concepts. Cacti 0.8 Beginner's Guide will introduce you to the wide variety of features of Cacti and will guide you on how to use them for maximum effectiveness. Advanced topics like the plugin architecture and Cacti automation using the command-line interface will help you build a professional performance measurement system.Designed as a beginner's guide, the book starts off with the basics of installing and using Cacti, and also covers the advanced topics that will show you how to customize and extend the core Cacti functionalities. The book offers essential tutorials for creating advanced graphs and using plugins to create enterprise-class reports to show your customers and colleagues. From data templates to input methods and plugin installation to creating your own customized plugins, this book provides you with a rich selection of step-by-step instructions to reach your goals. It covers all you need to know to implement professional performance measurement techniques with Cacti and ways to fully customize Cacti to fit your needs. By the end of the book, you will be able to implement and extend Cacti to monitor, display, and report the performance of your network exactly the way you want.
Table of Contents (23 chapters)
Cacti 0.8Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Pop Quiz Answers
Index

Time for action – defining a CDEF in Cacti


  1. Go to Management | Graph Management and click on the CDEFs submenu.

  2. On the usual screen, click on the Add link to the top right.

  3. Now you can give the new CDEF a useful name. Enter isGreen_0-44 and click on Create.

  4. Another table will appear. Click on the Add link.

  5. For CDEF Item Type, select Custom String from the drop-down box.

  6. Enter a,0,44,LIMIT into the CDEF Item Value field and click on Create. The first CDEF is created and you will see your CDEF definition together with a Save Successful message at the top.

  7. Repeat the steps and create a new CDEF called isYellow_45-50 and the Item Value of a,45,50,LIMIT.

  8. Now that you have defined your two CDEF items, you can proceed with the graph template creation.

What just happened?

You have created the two CDEF items which you are going to use to change the appearance of your running processes graph to go yellow before reaching a threshold, and stay green when it is way below the threshold.

Defining the graph template...