In this chapter, you learned how to create multiple environments that map to the software development workflow or the phases. We started with a brief overview of inventory groups and inventory variables, specifically, the group_vars
file. This was followed by the two approaches used to manage environments. Finally, we refactored our code, went on to create the dev
environment, and tested it by overriding one variable from the environment. In the next chapter, you are going to learn about infrastructure orchestration and how Ansible shines when it comes to orchestrating complex infrastructure workflows, zero downtime deployments, and so on.
Ansible Playbook Essentials
By :
Ansible Playbook Essentials
By:
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 (20 chapters)
Ansible Playbook Essentials
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Setting Up the Learning Environment
Free Chapter
Blueprinting Your Infrastructure
Going Modular with Ansible Roles
Separating Code and Data – Variables, Facts, and Templates
Bringing In Your Code – Custom Commands and Scripts
Controlling Execution Flow – Conditionals
Iterative Control Structures – Loops
Node Discovery and Clustering
Encrypting Data with Vault
Managing Environments
Orchestrating Infrastructure with Ansible
References
Index
Customer Reviews