Create swarm of Docker servers

create_swarm.sh

#!/bin/sh
#
# Create a swarm manager and consul
#

# 1. Create 7 servers
# CONSUL_ADDRESS=
# SWARM_MANAGER_1_ADDRESS=
# SWARM_MANAGER_2_ADDRESS=
# LOAD_BALANCER_1_ADDRESS=
# LOAD_BALANCER_2_ADDRESS=
# WEB_APP_1_ADDRESS=
# WEB_APP_2_ADDRESS=

#
# 2. Consul
#

# Create consul service
ssh CONSUL_ADDRESS \
docker run -d -p 8500:8500 --name consul progrium/consul -server -bootstrap

#
# 3. Swarm managers
#

# Create a swarm manager
ssh SWARM_MANAGER_1_ADDRESS \
docker run -d -p 4000:4000 --name swarm-mananger swarm manage -H :4000 \
  --replication --advertise $SWARM_MANAGER_1_ADDRESS:4000 consul://$CONSUL_ADDRESS:8500

# Create a second swarm manager
ssh SWARM_MANAGER_2_ADDRESS \
docker run -d -p 4000:4000 --name swarm-mananger swarm manager -H :4000 \
  --replication --advertise $SWARM_MANAGER_2_ADDRESS:4000 consul://$CONSUL_ADDRESS:8500

#
# 4. Connect to the swarm
#

# Run the swarm and expose the ip address on each of the nodes
ssh LOAD_BALANCER_1_ADDRESS \
docker run -d --name swarm --restart always swarm join --advertise=$LOAD_BALANCER_1_ADDRESS:2375 consul://$CONSUL_ADDRESS:8500
ssh LOAD_BALANCER_1_ADDRESS \
cat default_docker.txt >> /etc/default/docker
ssh LOAD_BALANCER_1_ADDRESS \
systemctl restart docker

ssh LOAD_BALANCER_2_ADDRESS \
docker run -d --name swarm --restart always swarm join --advertise=$LOAD_BALANCER_2_ADDRESS:2375 consul://$CONSUL_ADDRESS:8500
ssh LOAD_BALANCER_2_ADDRESS \
cat default_docker.txt >> /etc/default/docker
ssh LOAD_BALANCER_2_ADDRESS \
systemctl restart docker

ssh WEB_APP_1_ADDRESS \
docker run -d --name swarm --restart always swarm join --advertise=$WEB_APP_1_ADDRESS:2375 consul://$CONSUL_ADDRESS:8500
ssh WEB_APP_1_ADDRESS \
cat default_docker.txt >> /etc/default/docker
ssh WEB_APP_1_ADDRESS \
systemctl restart docker

ssh WEB_APP_2_ADDRESS \
docker run -d --name swarm --restart always swarm join --advertise=$WEB_APP_2_ADDRESS:2375 consul://$CONSUL_ADDRESS:8500
ssh WEB_APP_2_ADDRESS \
cat default_docker.txt >> /etc/default/docker
ssh WEB_APP_2_ADDRESS \
systemctl restart docker

#
# 5. Manage from the swarm manager
#

# Login to SWARM_MANAGER_1_ADDRESS
ssh SWARM_MANAGER_1_ADDRESS \
docker -H :4000 info

deafult_docker.txt

# Make sure that port 2376 is close and the nodes are on the same private network.
DOCKER_OPTS="--cluster-advertise eth1:2376 --cluster-store consul://$CONSUL_ADDRESS:8500 -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock"