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 PDK


A good workflow should provide ease of use, rapid feedback, ease of onboarding, and quality control. The PDK aims to increase productivity across this space. Many tools in the PDK have existed for quite some time, but they were often difficult to use and configure for workstation development.

PDK

Puppet makes the PDK freely available on their website, and it has a release for each major operating system. It uses a fully isolated environment to provide Puppet binaries and RubyGems that make development much simpler. Tools included in the PDK, as of version 1.5.0, are as follows:

  • Create new Puppet artifacts:
    • Modules
    • Classes
    • Defined types
    • Tasks
    • Puppet Ruby providers
  • PDK validate—simple health checks:
    • Puppet parser validate (Puppet syntax)
    • Puppet lint (Puppet style)
    • Puppet metadata syntax
    • Puppet metadata style
    • RuboCop (Ruby style)
  • PDK test unit (Puppet RSpec—unit testing)

Creating new Puppet artifacts

The PDK allows users to create new artifacts, using best practices. Each pdk new command builds...