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

Multitenant control repository


Larger organizations may need a multitenant setup of Puppet Enterprise Code Manager. While fundamentally, the workflow is the same, the way that we structure the control repository is slightly different.

We attempt to minimize the impact of the control repository, turning it into a call to libraries of sorts. We want to position our control repository to store references to code, rather than code itself. Moving role and profile manifests to external repositories allows us to manage them as a versioned artifacts, and declare which version is available to each and every enviroinment directly. Our control repository only contains the Puppetfile, things applied globally with site.pp, and values that we'd like to make available to the whole organization, to use in Hiera.

We make a few minor changes to the workflow to facilitate larger groups, as follows:

  • Roles and profiles are exported to standalone modules, tagged with versions, and imported by the Puppetfile.
  • Only...