Docker Kata 002 script

kata002_cluster_create.sh

#!/bin/bash
#
## Summary
# This script is designed to get you up and running quickly with a Docker Swarm
# and Visualizer in order to run through <placeholder> exercise quickly.
#
## References:
# See blog post "Docker Kata 002 >>> Stamp out Clusters"
# https://medium.com/@Jesse_White/docker-kata-002-a20f49249dca
# 
## Pre-requisites:
# Docker Machine installed on your laptop
# OSX
# Docker for Mac

# Set the machine names for later use in the script. You can change these if
# you require fresh machines

master_node=master
node01_node=node01
node02_node=node02
node03_node=node03

# Initialize Virtualbox machines using Docker Machine
for i in $master_node $node01_node $node02_node $node03_node; \
do docker-machine create -d virtualbox $i; done

# Create the Docker swarm
docker $(docker-machine config $master_node) swarm init \
--advertise-addr $(docker-machine ip $master_node):2377

# Add workers to the Docker Swarm
for i in $node01_node $node02_node $node03_node; \
do docker $(docker-machine config $i) swarm join \
--token `docker $(docker-machine config $master_node) swarm \
join-token worker -q` \
$(docker-machine ip $master_node):2377 ; done

echo "Your available machines:"
echo "============"
docker-machine ls -q