Book Image

Mastering Ansible, Second Edition - Second Edition

By : Jesse Keating
Book Image

Mastering Ansible, Second Edition - Second Edition

By: Jesse Keating

Overview of this book

This book provides you with the knowledge you need to understand how Ansible 2.1 works at a fundamental level and leverage its advanced capabilities. You'll learn how to encrypt Ansible content at rest and decrypt data at runtime. You will master the advanced features and capabilities required to tackle the complex automation challenges of today and beyond. You will gain detailed knowledge of Ansible workflows, explore use cases for advanced features, craft well thought out orchestrations, troubleshoot unexpected behaviour, and extend Ansible through customizations. Finally, you will discover the methods used to examine and debug Ansible operations, helping you to understand and resolve issues. By the end of the book, the readers will be able to unlock the true power of the Ansible automation engine and will tackle complex real world actions with ease.
Table of Contents (16 chapters)
Mastering Ansible - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Chapter 1. System Architecture and Design of Ansible

This chapter provides a detailed exploration of the architecture and design of how Ansible goes about performing tasks on your behalf. We will cover the basic concepts of inventory parsing and how the data is discovered, and then dive into playbook parsing. We will take a walk through module preparation, transportation, and execution. Lastly, we will detail variable types and find out where variables can be located, the scope they can be used in, and how precedence is determined when variables are defined in more than one location. All these things will be covered in order to lay the foundation for mastering Ansible!

In this chapter, we will cover the following topics:

  • Ansible version and configuration

  • Inventory parsing and data sources

  • Playbook parsing

  • Execution strategies

  • Module transport and execution

  • Variable types and locations

  • Variable precedence