You're reading from Puppet 8 for DevOps Engineers Automate your infrastructure at an enterprise scale

Product type Paperback

Published in Jun 2023

Publisher Packt

ISBN-13 9781803231709

Length 416 pages

Edition 1st Edition

Tools

Puppet

Concepts

DevOps

Author (1):

David Sandilands

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Table of Contents (22) Chapters

Preface

1. Part 1 – Introduction to Puppet and the Basics of the Puppet Language

2. Chapter 1: Puppet Concepts and Practices FREE CHAPTER

3. Chapter 2: Major Changes, Useful Tools, and References

4. Chapter 3: Puppet Classes, Resource Types, and Providers

5. Chapter 4: Variables and Data Types

6. Chapter 5: Facts and Functions

7. Part 2 – Structuring, Ordering, and Managing Data in the Puppet Language

8. Chapter 6: Relationships, Ordering, and Scope

9. Chapter 7: Templating, Iterating, and Conditionals

10. Chapter 8: Developing and Managing Modules

11. Chapter 9: Handling Data with Puppet

12. Part 3 – The Puppet Platform and Bolt Orchestration

13. Chapter 10: Puppet Platform Parts and Functions

14. Chapter 11: Classification and Release Management

15. Chapter 12: Bolt for Orchestration

16. Chapter 13: Taking Puppet Server Further

17. Part 4 – Puppet Enterprise and Approaches to the Adoption of Puppet

18. Chapter 14: A Brief Overview of Puppet Enterprise

19. Chapter 15: Approaches to Adoption

20. Index

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Templating, Iterating, and Conditionals

This chapter will cover advanced structures for the Puppet language, including templates that enable the insertion of variables into templated files. The two formats available in Puppet, Embedded Ruby (ERB) templates, which are based on native Ruby templating, and Embedded Puppet (EPP) templates, which are modern Puppet language-based templates, will be discussed, highlighting the differences between the two and the core advantages of using EPP over ERB.

Additionally, the chapter will delve into the use of iteration and loops in Puppet, showing how iterative functions are used with sections of code known as lambdas in Puppet instead of more traditional loop keywords of other languages. Finally, the chapter will examine the different types of conditional statements available in Puppet, including if, case, and unless statements, which are typical of any programming language, and the Puppet-specific selector, which allows a value on a key or...