a script file to create docker engines across a few hosts and join them as nodes

swarm_join.sh

#!/usr/sh

#change these values as necessary
set SWARM_TOKEN=insert_token_here
set SWARM_MANAGE_HOST=10.0.0.4

# install docker-engine on the current machine
sudo apt-get update && sudo apt-get install -y docker-engine && sudo service docker start && sudo docker run hello-world && sudo usermod -aG docker $USER

# join the docker engine to a swarm
 docker swarm join \
    --token $SWARM_TOKEN \
    $SWARM_MANAGER_HOST:2377