User-data for Third Node.

third.sh

#!/bin/bash
export CONNECT_TO="ip-address-of-first-node"
export PRIVATE_IPV4=$(curl -s http://169.254.169.254/metadata/v1/interfaces/private/0/ipv4/address)
export PUBLIC_IPV4=$(curl -s http://169.254.169.254/metadata/v1/interfaces/public/0/ipv4/address)
export CONSUL_KEY="from-the-first-node"
export SWARM_TOKEN="from-the-first-node"
ufw allow 8300
ufw allow 8301
ufw allow from $CONNECT_TO
service consul stop
rm -rf /var/cache/octohost/*
sudo cat > /etc/consul.d/default.json << EOL
{
 "data_dir": "/var/cache/octohost",
 "server": true,
 "client_addr": "0.0.0.0",
 "advertise_addr": "$PRIVATE_IPV4",
 "datacenter": "nyc3",
 "node_name": "octo3",
 "enable_syslog": true,
 "encrypt": "$CONSUL_KEY"
}
EOL
sudo cat > /etc/default/consul << EOL
# Options for Consul
# See https://consul.io for more details
GOMAXPROCS=4
CONSUL_OPTIONS="-bootstrap-expect 3"
EOL
service consul start
sleep 5
consul join $CONNECT_TO
service docker stop
rm -f /etc/docker/key.json
service docker start

docker run -d swarm join --addr=$PRIVATE_IPV4:4243 token://$SWARM_TOKEN
docker run --rm swarm list token://$SWARM_TOKEN

docker run -e SETTINGS_FLAVOR=s3 -e AWS_BUCKET=octoregistry -e AWS_KEY=KEY_GOES_HERE -e AWS_SECRET=SECRET_KEY_GOES_HERE -e SEARCH_BACKEND=sqlalchemy -p 5000:5000 -d registry