Book Image

Puppet 4.10 Beginner's Guide - Second Edition

By : John Arundel
Book Image

Puppet 4.10 Beginner's Guide - Second Edition

By: John Arundel

Overview of this book

Puppet 4.10 Beginner’s Guide, Second Edition, gets you up and running with the very latest features of Puppet 4.10, including Docker containers, Hiera data, and Amazon AWS cloud orchestration. Go from beginner to confident Puppet user with a series of clear, practical examples to help you manage every aspect of your server setup. Whether you’re a developer, a system administrator, or you are simply curious about Puppet, you’ll learn Puppet skills that you can put into practice right away. With practical steps giving you the key concepts you need, this book teaches you how to install packages and config files, create users, set up scheduled jobs, provision cloud instances, build containers, and so much more. Every example in this book deals with something real and practical that you’re likely to need in your work, and you’ll see the complete Puppet code that makes it happen, along with step-by-step instructions for what to type and what output you’ll see. All the examples are available in a GitHub repo for you to download and adapt for your own server setup.
Table of Contents (20 chapters)
Puppet 4.10 Beginner's Guide Second Edition
About the Author
About the Reviewer
Customer Feedback

Creating resources with Hiera data

When we started working with Puppet, we created resources directly in the manifest using literal attribute values. In this chapter, we've seen how to use Hiera data to fill in the title and attributes of resources in the manifest. We can now take this idea one step further and create resources directly from Hiera queries. The advantage of this method is that we can create any number of resources of any type, based purely on data.

Building resources from Hiera arrays

In Chapter 5, Variables, expressions, and facts, we learned how to use Puppet's each function to iterate over an array or hash, creating resources as we go. Let's apply this technique to some Hiera data. In our first example, we'll create some user resources from a Hiera array.

  1. On your Puppet-managed node, run the following command:

    cd /etc/puppetlabs/code/environments/production
    sudo cp /vagrant/examples/hiera_users.yaml data/common.yaml
  2. Next, run the following command:

    sudo puppet apply /vagrant...