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Ansible Playbook Essentials

Ansible Playbook Essentials

By : Shah
4.4 (14)
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Ansible Playbook Essentials

Ansible Playbook Essentials

4.4 (14)
By: Shah

Overview of this book

Ansible Playbook Essentials will show you how to write a blueprint of your infrastructure, encompassing multitier applications using Ansible's playbooks. Beginning with basic concepts such as plays, tasks, handlers, inventory, and YAML Ain't Markup Language (YAML) syntax that Ansible uses, you'll understand how to organize your code into a modular structure. Building on this, you will study techniques to create data-driven playbooks with variables, templates, logical constructs, and encrypted data, which will further strengthen your application skills in Ansible. Adding to this, the book will also take you through advanced clustering concepts, such as discovering topology information about other nodes in the cluster and managing multiple environments with isolated configurations. As you approach the concluding chapters, you can expect to learn about orchestrating infrastructure and deploying applications in a coordinated manner. By the end of this book, you will be able to design solutions to your automation and orchestration problems using playbooks quickly and efficiently.
Table of Contents (14 chapters)
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1
Setting Up the Learning Environment
12
A. References
13
Index

Chapter 2. Going Modular with Ansible Roles

In the last chapter, you learned about writing a simple playbook with Ansible. You also learned about the concepts of plays which map hosts to tasks. Writing tasks in a single playbook may work fine for a very simple setup. However, if we have multiple applications spanning across number of hosts, this will quickly become unmanageable.

In this chapter, you will be introduced to the following concepts:

  • What makes a role and what are roles used for?
  • How to create roles to provide abstraction?
  • Organizing content to provide modularity
  • Using include statements
  • Writing simple tasks and handlers
  • Installing packages, managing services, and serving files with Ansible modules
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Ansible Playbook Essentials
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