Book Image

Implementing DevOps with Ansible 2

By : Jonathan McAllister
Book Image

Implementing DevOps with Ansible 2

By: Jonathan McAllister

Overview of this book

Thinking about adapting the DevOps culture for your organization using a very simple, yet powerful automation tool, Ansible 2? Then this book is for you! In this book, you will start with the role of Ansible in the DevOps module, which covers fundamental DevOps practices and how Ansible is leveraged by DevOps organizations to implement consistent and simplified configuration management and deployment. You will then move on to the next module, Ansible with DevOps, where you will understand Ansible fundamentals and how Ansible Playbooks can be used for simple configuration management and deployment tasks. After simpler tasks, you will move on to the third module, Ansible Syntax and Playbook Development, where you will learn advanced configuration management implementations, and use Ansible Vault to secure top-secret information in your organization. In this module, you will also learn about popular DevOps tools and the support that Ansible provides for them (MYSQL, NGINX, APACHE and so on). The last module, Scaling Ansible for the enterprise, is where you will integrate Ansible with CI and CD solutions and provision Docker containers using Ansible. By the end of the book you will have learned to use Ansible to leverage your DevOps tasks.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Understanding Docker's Architecture


Initially, combining Docker and Ansible may seem contrary to good configuration management tactics. However, after some research, we quickly learn that these two seemingly different technologies are actually quite robust and scalable when combined. This chapter will focus on integrating Ansible and Docker.

Docker is easily the frontrunner of virtualization solutions. It provides a huge benefit above virtually every other virtualization solution on the market. As such, Dockers popularity has grown significantly in organizations looking to deliver high-quality, robust implementations to customers.

Before we can dive into the integration points, let's talk about Dockers' architecture. This is important to understand as it is what sets Docker aside from the competition. The following diagram shows Docker's unique architecture in detail:

As we can see from the preceding diagram, Dockers architecture provides us with a shared kernel that sits on top of the Host...