Book Image

Mastering Docker

By : Scott Gallagher
Book Image

Mastering Docker

By: Scott Gallagher

Overview of this book

<p><span id="description" class="sugar_field">Docker has been a game-changer when it comes to virtualization – it has now grown to become a key driver of innovation beyond system administration, having an impact on the world of web development and more. But how can you make sure you’re keeping up with the innovations that it’s driving? How can you be sure you’re using it to its full potential? Mastering Docker shows you how – it not only demonstrates how to use Docker more effectively, it also helps you rethink and reimagine what’s possible with Docker.</span></p> <p><span class="sugar_field"><span id="description" class="sugar_field"> Covering best practices to make sure you’re confident with and the basics, such as building, managing and storing containers, before diving deeper into Docker security, you’ll find everything you need to help you extend and integrate Docker in new and innovative ways. You’ll learn how to take greater control over your containers using some of Docker’s most sophisticated and useful tools, such as Docker compose and Docker swarm, before bringing together everything you already know and have learned to put your containers into production and monitor them for safety and performance.</span></span></p> <p><span class="sugar_field"><span class="sugar_field"><span id="description" class="sugar_field"> Beyond this, you’ll also explore even more advanced strategies, as you learn how to extend and integrate Docker with cloud platforms such as Heroku and OpenStack, and how tools such as Kubernetes can improve the way you manage large-scale container orchestration. With further guidance on how you can use configuration management tools such as Puppet, Chef and PowerShell, by the end of the book you’ll have a broad and detailed sense of exactly what’s possible with Docker – and how seamlessly it fits with a range of other platforms and tools.</span></span></span></p>
Table of Contents (20 chapters)
Mastering Docker
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Docker Machine commands


Now that we can deploy Docker hosts locally and to the cloud environments, we need to know how we can manage and manipulate these Docker hosts. Let's take a look at all the commands Docker Machine has to offer.

Note

Note that as we previously created these hosts we were given output on how to target them for use with Docker Machine.

On running the docker-machine create command, you should receive an output similar to this:

INFO[0041] To point your Docker client at it, run this in your shell: $(docker-machine env dev2)

This is how you can set the default to target Docker hosts with Docker Machine. Keep this in mind, when we are looking at the following commands.

active

You can use the active subcommand to see which Docker host is currently active and commands that you execute will be executed on that Docker host:

$ docker-machine active
dev2

config

You can use the config subcommand to view what the current configuration is for the Docker Machine setup on the currently active...