swarm-cluster.sh

#!/usr/bin/env bash

set -e

for i in 1 2 3; do
    docker-machine create \
        -d virtualbox \
        --engine-opt experimental=true \
        node-$i
done

eval $(docker-machine env node-1)

docker swarm init \
    --advertise-addr $(docker-machine ip node-1) \
    --listen-addr $(docker-machine ip node-1):2377

TOKEN=$(docker swarm join-token -q worker)

for i in 2 3; do
    eval $(docker-machine env node-$i)

    docker swarm join --token $TOKEN $(docker-machine ip node-1):2377
done

eval $(docker-machine env node-1)

echo ""
echo ">> The Swarm Cluster is set up!"