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 – creating a master Git repo


We're going to make a copy of our existing Puppet repo, which we can then clone on a new machine.

  1. Create a directory to hold the repo:

    ubuntu@demo:~/puppet$ sudo mkdir /var/git
    
  2. Clone the repo, using the --bare flag:

    ubuntu@demo:~/puppet$ cd /var/git
    ubuntu@demo:/var/git$ sudo git clone --bare /home/ubuntu/puppet
    Cloning into bare repository 'puppet.git'...
    done.
    
  3. Now create a git user that will own the master repo and control access to it:

    ubuntu@demo:/var/git$ sudo useradd -d /var/git git
    ubuntu@demo:/var/git$ sudo chown -R git:git /var/git
    
  4. Just to verify that these steps have worked, check out a temporary clone of the master repo:

    ubuntu@demo:/tmp$ cd /tmp
    ubuntu@demo:/tmp$ git clone /var/git/puppet.git
    Cloning into 'puppet'...
    done.
    ubuntu@demo:/tmp$ ls puppet
    manifests  modules
    ubuntu@demo:/tmp$ rm -r puppet
    
  5. Now create a secure shell (SSH) keypair for the git user so that it can log in from remote machines to clone and update the Git repo. When...