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


In this chapter, we've gained an understanding of how Puppet's variable and data type system works, including the basic data types: Strings, Numbers, Booleans, Arrays, and Hashes. We've seen how to interpolate variables in strings, and how to quickly create sets of similar resources using an array of resource names. We've learned how to set common attributes for resources using a hash of attribute-value pairs and the attribute splat operator.

We've seen how to use variables and values in expressions, including arithmetic expressions, and explored the range of Puppet's comparison operators to generate Boolean expressions. We've used conditional expressions to build if/else and case statements, and had a brief introduction to regular expressions.

We've learned how Puppet's Facter subsystem supplies information about the node via the facts hash, and how to use facts in our own manifests and in expressions. We've also pointed out some key facts, including the operating system release,...