Book Image

Puppet 3: Beginner's Guide

By : John Arundel
Book Image

Puppet 3: Beginner's Guide

By: John Arundel

Overview of this book

<p>Everyone's talking about Puppet, the open-source DevOps technology that lets you automate your server setups and manage websites, databases, and desktops. Puppet can build new servers in seconds, keep your systems constantly up to date, and automate daily maintenance tasks. <br /><br />"Puppet 3 Beginner's Guide" gets you up and running with Puppet straight away, with complete real world examples. Each chapter builds your skills, adding new Puppet features, always with a practical focus. You'll learn everything you need to manage your whole infrastructure with Puppet.<br /><br />"Puppet 3 Beginner’s Guide" takes you from complete beginner to confident Puppet user, through a series of clear, simple examples, with full explanations at every stage.</p> <p>Through a series of worked examples introducing Puppet to a fictional web company, you'll learn how to manage every aspect of your server setup. Switching to Puppet needn't be a big, long-term project; this book will show you how to start by bringing one small part of your systems under Puppet control and, little by little, building to the point where Puppet is managing your whole infrastructure.</p> <p>Presented in an easy-to-read guide to learning Puppet from scratch, this book explains simply and clearly all you need to know to use this essential IT power tool, all the time applying these solutions to real-world scenarios.</p>
Table of Contents (17 chapters)
Puppet 3 Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – using a recursive file resource


The cat-pictures application is nearly complete, but it needs some pictures of cats added in time for the launch. The art department has sent over a set of feline stock photos for you to deploy to the website.

  1. Create the directories for a new cat-pictures module:

    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures
    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures/files
  2. Create a directory for the images, and some placeholder image files (for extra credit, download some real pictures of cats from the Internet):

    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures/files/img
    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures/files/img/cat_001.jpg
    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures/files/img/cat_002.jpg
    ubuntu@demo:~/puppet$ mkdir modules/cat-pictures/files/img/cat_003.jpg
  3. Modify your manifests/nodes.pp file as follows:

    node 'demo' {
      file { '/var/www/cat-pictures':
        ensure => directory,
      }
    
      file { '/var/www/cat-pictures/img':
        source...