Book Image

Extending Docker

By : Russ McKendrick
Book Image

Extending Docker

By: Russ McKendrick

Overview of this book

With Docker, it is possible to get a lot of apps running on the same old servers, making it very easy to package and ship programs. The ability to extend Docker using plugins and load third-party plugins is incredible, and organizations can massively benefit from it. In this book, you will read about what first and third party tools are available to extend the functionality of your existing Docker installation and how to approach your next Docker infrastructure deployment. We will show you how to work with Docker plugins, install it, and cover its lifecycle. We also cover network and volume plugins, and you will find out how to build your own plugin. You’ll discover how to integrate it with Puppet, Ansible, Jenkins, Flocker, Rancher, Packer, and more with third-party plugins. Then, you’ll see how to use Schedulers such as Kubernetes and Amazon ECS. Finally, we’ll delve into security, troubleshooting, and best practices when extending Docker. By the end of this book, you will learn how to extend Docker and customize it based on your business requirements with the help of various tools and plugins.
Table of Contents (15 chapters)

Orchestration with Ansible

I suspect a lot of people will be expecting an Ansible versus Puppet opening to this section of the chapter. In fact, as mentioned at the end of the previous section, while the two tools have a lot of crossover, their strengths lie in doing two different jobs.

They also work in completely different ways. Rather than going into the details now, let's jump right in and install Ansible and then launch our WordPress containers using an Ansible playbook.



Note that if, for any reason, you are not able to work through this section of the chapter, I have recorded a screencast to show you what happens when you launch the Ansible playbook, which can be found at

Before launching our containers, we need to do a few things. The first thing is to install Ansible.

If you are running OS X, I would recommend installing Ansible using Homebrew. Homebrew is available at and can be installed with the following single command...