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 – set up SNMP access on an ESX 3.5 server


  1. Login to your ESX system and become the root user.

  2. Edit the SNMP configuration file.

    vi /etc/snmp
    
  3. Change the file to fit your settings:

  4. Save the file.

  5. Allow SNMP traffic to go through the firewall:

    esxcfg-firewall -e snmpd
    esxcfg-firewall –blockOutgoing
    
  6. Enable the SNMP daemon on startup and restart the daemon:

    chkconfig snmpd on
    /etc/init.d/snmpd restart
    

What just happened?

You just enabled the SNMP daemon on your ESX 3.5 host and also opened the SNMP port in the ESX firewall. You can now add the ESX host to Cacti and perform SNMP-based polling.

Adding VMware ESX servers to Cacti

Now that you have enabled the SNMP agent on your ESX server, you can proceed with adding it to Cacti. There are some templates available on the Cacti website which work for version 3.5 of ESX, but they are only recommended if you are not using VMware's vMotion technology (as the virtual guest systems will move around without the SNMP agent realizing this)...