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 – configuring Cacti


The database and some other special configuration tasks are done by editing the information in the config.php file.

  1. Navigate to the cacti directory:

    cd /var/www/html/cacti/include
    
  2. Edit config.php with vi:

    vi config.php
    
  3. Change the $database_username and $database_password fields to the previously created username and password.

  4. Change the line $config['url_path'] = '/' to $config['url_path'] = '/cacti/'

What just happened?

You changed the database configuration for Cacti to the username and password that you created earlier. These settings will tell Cacti where to find the database and what credentials it needs to use to connect to it. You also changed the default URL path to fit your installation. As you install Cacti to /var/www/html/cacti, a sub-directory of the document root, you need to change this setting to /cacti/, otherwise Cacti will not work correctly.

Creating the poller cron entry and Cacti's system user

For the poller to work correctly, Cacti needs a system user account. You are going to create one now and also set up the poller's cron entry.