Edit 2015-01-07: Updated article to reflect changes in swarm. Thanks Rael! Docker Swarm was announced at the first European DockerCon. Swarm is a pluggable cluster manager with a simple scheduler. It’s currently not super easy to set up, so here is how I did it. Background The swarm executable discovers hosts by reading entries from the discovery url, discovery-stage.hub.docker.com/v1/clusters/TOKEN. Sample output: ["128.199.36.196:2375","128.199.50.146:2375","128.199.32.159:2375"] As you can see, this is just a list of IP/port combinations.