Mastering Puppet 5

By : Russell-Yates, Southgate

4.4 (5)

Buy this Book

Mastering Puppet 5

4.4 (5)

By: Russell-Yates, Southgate

Buy this Book

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.

Preface

Who this book is for

What this book covers

To get the most out of this book

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Free Chapter

Authoring Modules

Using a decent IDE and plugins

Using good module and class structure

Using the new Puppet Development Kit commands

Validating your module

Unit testing your module

Staying on the lookout for code smells

Working with dead code

Using Puppet Forge

Working with the community

Writing great documentation

Adding module dependencies

Adding compatibility data for your modules

Using the new Hiera 5 module level data

Summary

Roles and Profiles

Summary of the pattern

Profiles

Roles

Summary

Extending Puppet

Custom facts

Custom functions

Types and providers

Summary

Hiera 5

Separation of concerns between code and data

Introducing a frame for the environment

A more complete hierarchy

Hiera 5 summary

Global, environment, and module layers

Encrypted YAML backend

Lookup function

Debugging Hiera

Beyond Hiera using Jerakia

Summary

Managing Code

Efficiently managing code

Code Manager

Multitenant control repository

Summary

Workflow

Puppet workflow

Designing a Puppet workflow

Using the PDK

Summary

Continuous Integration

Continuous Integration systems

Unit testing with Puppet RSpec

Acceptance testing with Test Kitchen

Summary

Extending Puppet with Tasks and Discovery

Puppet Tasks

Puppet Discovery

Summary

Exported Resources

Virtual and exported resources

Use cases

Summary

Application Orchestration

Application definition

Application components

Service resources

Modeling applications

Summary

Scaling Puppet

Inspection

Tuning

Horizontal scaling

Summary

Troubleshooting and Profiling

Common component errors

Catalog errors

Logging

Summary

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