Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By : James Freeman, Jesse Keating
Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By: James Freeman, Jesse Keating

Overview of this book

Ansible is a modern, YAML-based automation tool (built on top of Python, one of the world’s most popular programming languages) with a massive and ever-growing user base. Its popularity and Python underpinnings make it essential learning for all in the DevOps space. This fourth edition of Mastering Ansible provides complete coverage of Ansible automation, from the design and architecture of the tool and basic automation with playbooks to writing and debugging your own Python-based extensions. You'll learn how to build automation workflows with Ansible’s extensive built-in library of collections, modules, and plugins. You'll then look at extending the modules and plugins with Python-based code and even build your own collections — ultimately learning how to give back to the Ansible community. By the end of this Ansible book, you'll be confident in all aspects of Ansible automation, from the fundamentals of playbook design to getting under the hood and extending and adapting Ansible to solve new automation challenges.
Table of Contents (18 chapters)
Section 1: Ansible Overview and Fundamentals
Section 2: Writing and Troubleshooting Ansible Playbooks
Section 3: Orchestration with Ansible


DevOps has pushed automation in many new directions, including the containerization of applications, and even the creation of infrastructure itself. Cloud computing services enable self-service management of fleets of servers for running services. Ansible can easily interact with these services to provide the automation and orchestration engine.

In this chapter, you learned how to manage on-premises cloud infrastructures, such as OpenStack, using Ansible. We then extended this with examples of public cloud infrastructure provision on both AWS and Microsoft Azure. Finally, you learned how to interact with Docker using Ansible, and how to neatly package Docker service definitions using Ansible Container.

Ansible can start just about any host, except for the one that it is running on, and with proper credentials, it can create the infrastructure that it wants to manage, either for one-off actions or to deploy a new version of an application into a production container management...