Book Image

Mastering Puppet 5

By : Ryan Russell-Yates, Jason Southgate
Book Image

Mastering Puppet 5

By: Ryan Russell-Yates, Jason Southgate

Overview of this book

Puppet is a configuration management system and a language written for and by system administrators to manage a large number of systems efficiently and prevent configuration drift. The core topics this book addresses are Puppet's latest features and mastering Puppet Enterprise. You will begin by writing a new Puppet module, gaining an understanding of the guidelines and style of the Puppet community. Following on from this, you will take advantage of the roles and profiles pattern, and you will learn how to structure your code. Next, you will learn how to extend Puppet and write custom facts, functions, types, and providers in Ruby, and also use the new features of Hiera 5. You will also learn how to configure the new Code Manager component, and how to ensure code is automatically deployed to (multiple) Puppet servers. Next, you will learn how to integrate Puppet with Jenkins and Git to build an effective workflow for multiple teams, and use the new Puppet Tasks feature and the latest Puppet Orchestrator language extensions. Finally, you will learn how to scale and troubleshoot Puppet. By the end of the book, you will be able to deal with problems of scale and exceptions in your code, automate workflows, and support multiple developers working simultaneously.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Using the new Puppet Development Kit commands


Some features to improve quality in your Puppet development, such as puppet-lint, puppet-rspec, and commands such as puppet module create have been around for some time, but previously, you had to discover these tools out there in the wild, install them, and figure out how to use them effectively yourself.

Puppet decided back in August 2017 to bring these things all together on the client side and make them a breeze to use with the new Puppet Development Kit version 1.0. I can certainly recall puppet-rspec always took some time to set up and get working correctly. Now it's all really easy.

Let's take a whistle-stop tour of the module development process using the new PDK 1.0.

  • Creating the module framework and metadata: The pdk new module  command runs in the same way as the old puppet module create command, as follows:
$ pdk new module zope –-skip-interview

So, just use the name of the module to create init.pp:

$ pdk new class zope

These commands now negate any need for snippets in your text editor to create the comments, declarations, and other boilerplate code.

  • Creating further classes: Create any further classes using the same command. See the following example:
$ pdk new class params