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Mastering Ansible, Second Edition

Mastering Ansible, Second Edition

By : Keating
3.8 (8)
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Mastering Ansible, Second Edition

Mastering Ansible, Second Edition

3.8 (8)
By: 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 (10 chapters)
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Task, handler, variable, and playbook include concepts

The first step to understanding how to efficiently organize an Ansible project structure is to master the concept of including files. The act of including files allows content to be defined in a topic specific file that can be included into other files one or more times within a project. This inclusion feature supports the concept of Don't Repeat Yourself (DRY).

Including tasks

Task files are YAML files that define one or more tasks. These tasks are not directly tied to any particular play or playbook; they exist purely as a list of tasks. These files can be referenced by playbooks or other task files by way of the include operator. This operator takes a path to a task file, and as we learned in Chapter 1, System Architecture and Design of Ansible, the path can be relative from the file referencing it.

To demonstrate how to use the include operator to include tasks, let's create a simple play that includes a task file with some...

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