Book Image

Cacti Beginner's Guide - Second Edition

Book Image

Cacti Beginner's Guide - Second Edition

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 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 such as 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. You will also learn how to migrate Cacti to new servers. Lastly you will also be introduced to the latest feature of building a scalable remote poller environment. 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 (24 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
15
Online Resources

Final configuration of the master poller


As you have seen in the screenshots, the master poller has its hostname set to localhost as well. While this does not have any negative effect on the functionality of the remote poller, it has an impact on setting up devices or using functionality like the real-time feature for viewing graphs.

For devices being polled from a remote poller, the master server will ask that remote poller to provide the required data. The remote poller then gathers the data and provides it to the master server using the hostname from the Data collectors table, which is still set to localhost. Obviously, the remote poller will therefore not be able to provide the data to the master server unless you change the hostname to the correct resolvable hostname as well.

Time for action – setting up the remote poller system

The following steps describe how to to set up the remote poller system:

  1. Log on to the master Cacti system.
  2. Got to the Console | Data Collection | Data Collectors...