Each Docker node in the cluster will be running Ubuntu 16.04. In this tutorial, you’ll learn how to deploy a cluster of Docker machines using the Swarm feature of Docker 1.12 on DigitalOcean. With Docker 1.12, however, an external discovery service is no longer necessary, since Docker comes with an in-memory key-value store that works out of the box. You can use it to quickly deploy a cluster of Docker hosts running either on your local machine or on supported cloud platforms.īefore Docker 1.12, setting up and deploying a cluster of Docker hosts required you to use an external key-value store like etcd or Consul for service discovery. Docker Swarm is the Docker-native solution for deploying a cluster of Docker hosts.
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