deploy.sh

#!/bin/bash


echo "Spinning up four droplets..."

for i in 1 2 3 4; do
  docker-machine create \
    --driver digitalocean \
    --digitalocean-access-token $DIGITAL_OCEAN_ACCESS_TOKEN \
    --digitalocean-region "nyc1" \
    --digitalocean-image "debian-10-x64" \
    --digitalocean-size "s-4vcpu-8gb" \
    --engine-install-url "https://releases.rancher.com/install-docker/19.03.9.sh" \
    node-$i;
done


echo "Initializing Swarm mode..."

docker-machine ssh node-1 -- docker swarm init --advertise-addr $(docker-machine ip node-1)


echo "Adding the nodes to the Swarm..."

TOKEN=`docker-machine ssh node-1 docker swarm join-token worker | grep token | awk '{ print $5 }'`

for i in 2 3 4; do
  docker-machine ssh node-$i \
    -- docker swarm join --token ${TOKEN} $(docker-machine ip node-1):2377;
done


echo "Creating secret..."

eval $(docker-machine env node-1)
echo "foobar" | docker secret create secret_code -


echo "Deploying the Flask microservice..."

docker stack deploy --compose-file=docker-compose-swarm.yml flask


echo "Create the DB table and apply the seed..."

sleep 15
NODE=$(docker service ps -f "desired-state=running" --format "{{.Node}}" flask_web)
eval $(docker-machine env $NODE)
CONTAINER_ID=$(docker ps --filter name=flask_web --format "{{.ID}}")
docker container exec -it $CONTAINER_ID python manage.py recreate_db
docker container exec -it $CONTAINER_ID python manage.py seed_db


echo "Get the IP address..."
eval $(docker-machine env node-1)
docker-machine ip $(docker service ps -f "desired-state=running" --format "{{.Node}}" flask_nginx)