dockercoins in docker 1.12 swarm mode

swarm: build dockercoins

# Get dockercoins application
git clone https://github.com/roicostas/docker-orchestration
cd docker-orchestration/dockercoins

# Build and push dockercoins to the registry
docker-compose -f docker-compose.yml-registry build
docker-compose -f docker-compose.yml-registry push

swarm: cluster state

# Connect to the cluster
eval $(docker-machine env node-1)

# Check cluster state
docker info

# Check cluster nodes
docker nodes ls

swarm: create cluster

# Create three machines with docker-machine
for node in node-1 node-2 node-3; do
    docker-machine create -d virtualbox --virtualbox-memory=512 $node
done

# Connect to node-1
eval $(docker-machine env node-1)

# Create swarm master
docker swarm init --advertise-addr $(docker-machine ip node-1) \
    --listen-addr $(docker-machine ip node-1):2377
    
# Connect to the other machines and join swarm
TOKEN=$(docker swarm join-token -q worker)
for node in node-2 node-3; do
    eval $(docker-machine env $node)
    docker swarm join --token $TOKEN $(docker-machine ip node-1):2377
done

swarm: deploy dockercoins

# Create private dockercoins network
docker network create --driver overlay dockercoins

# Create dockercoins services
docker service create --name redis -p 6379 --network dockercoins redis

docker service create --name rng -p 80 --network dockercoins $REGISTRY/dockercoins_rng

docker service create --name hasher -p 80 --network dockercoins $REGISTRY/dockercoins_hasher

docker service create --name worker --network dockercoins $REGISTRY/dockercoins_worker
  
# ingress network allows the service to be public (here on port 8000)
docker service create --name webui -p 8000:80 --network dockercoins --network ingress $REGISTRY/dockercoins_webui

swarm: deploy registry

docker service create -p 5000:5000 --constraint node.hostname==node-1 registry:2
export REGISTRY=localhost:5000

swarm: destroy cluster

docker-machine rm -f node-1 node-2 node-3

swarm: dockercoins state

# Check services
docker service ls

# Check worker service
docker service ps worker

swarm: fault tolerance

docker-machine rm -f node-3

swarm: scale worker service

docker service update --replicas 3 worker

swarm: update worker image

# Create new dockercoins_worker version
docker tag $REGISTRY/dockercoins_worker $REGISTRY/dockercoins_worker:v2
docker push $REGISTRY/dockercoins_worker:v2

# Upgrade service
docker service update --image localhost:5000/dockercoins_worker:v2 worker