Book Image

Docker Orchestration

By : Randall Smith
Book Image

Docker Orchestration

By: Randall Smith

Overview of this book

Docker orchestration is what you need when transitioning from deploying containers individually on a single host to deploying complex multi-container apps on many machines. This book covers the new orchestration features of Docker 1.12 and helps you efficiently build, test, and deploy your application using Docker. You will be shown how to build multi-container applications using Docker Compose. You will also be introduced to the building blocks for multi-host Docker clusters such as registry, overlay networks, and shared storage using practical examples. This book gives an overview of core tools such as Docker Machine, Swarm, and Compose which will enhance your orchestration skills. You’ll learn how to set up a swarm using the decentralized building block. Next, you’ll be shown how to make the most out of the in-built orchestration feature of Docker engine and you’ll use third-party tools such as Kubernetes, Mesosphere, and CoreOS to orchestrate your existing process. Finally, you will learn to deploy cluster hosts on cloud services and automate your infrastructure.
Table of Contents (17 chapters)
Docker Orchestration
About the Author
About the Reviewer
Customer Feedback

Introducing Docker Datacenter

Docker Datacenter is a commercial application from Docker. It is composed of the commercially supported Docker Engine, the UCP, and the DTR. The UCP provides a web-based interface to run containers and Docker Compose applications on a cluster.

Docker Datacenter cannot be layered on an existing swarm. Instead, each node is added in a similar manner to joining a swarm. From the first node in the new cluster, run the following command:

$ docker run --rm -it --name ucp -v /var/run/docker.sock:/var/run/docker.sock docker/ucp install -i --host-address <public ip>

This command uses the docker/ucp image to perform the installation. The Docker socket is passed in as a volume to allow the install script to start the needed containers. The --host-address is the public IP address that will be used to access UCP. The interactive install will prompt you for an administrative password so that you can log in to the web interface.

Applications can be run with Docker Compose...