What you need for this book
To follow the examples provided in this book, you will need access to a computer platform capable of running Ansible. Currently, Ansible can be run on any machine with Python 2.6 or 2.7 installed (Windows isn't supported for the control machine). This includes Red Hat, Debian, CentOS, OS X, any of the BSDs, and so on.
This book uses the Ansible 2.2.x.x series release.
Ansible installation instructions can be found at http://docs.ansible.com/ansible/intro_installation.html.
Some examples use Docker, version 1.12.6. Docker installation instructions can be found at: http://www.docker.com/community-edition.