add swarm_instructions.sh

docker/swarm_instructions.sh

@@ -0,0 +1,56 @@
+# create a digital ocean token and export is as DOTOKEN
+MACHINES=(manager node app app-counts app-push app-refresh celery postgres db-mongo monitor db-redis db-redis-pubsub db-redis-sessions db-redis-story elasticsearch haproxy monitor)
+for mach in $MACHINES; do
+    echo "Creating docker machine for ${mach}"
+    docker-machine create --driver digitalocean --digitalocean-access-token $DOTOKEN --digitalocean-image ubuntu-20-04-x64 --digitalocean-size s-1vcpu-1gb --digitalocean-monitoring true --digitalocean-private-networking true $mach
+done
+
+
+#swarmify machines
+leader_ip=$(docker-machine ip manager)
+echo "Initializing Swarm mode"
+eval $(docker-machine env manager)
+docker swarm init --advertise-addr $leader_ip
+
+manager_token=$(docker swarm join-token manager -q)
+worker_token=$(docker swarm join-token worker -q)
+
+
+for mach in $MACHINES; do
+
+    if [[ $mach == *"manager"* ]]; then
+        docker-machine ssh $mach docker swarm join --token $manager_token $leader_ip:2377
+    else
+        echo "Switching environment to $mach"
+        eval $(docker-machine env $mach)
+        docker-machine ssh $mach docker swarm join --token $worker_token $leader_ip:2377
+    fi
+
+done
+
+# if you are getting the error: Unable to query docker version: Cannot connect to the docker engine endpoint
+# ssh into the docker machine with `docker-machine ssh <machine>` and add `DOCKER_OPTS="-H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock"`
+# to the /etc/default/docker file. Restart the docker service in the machine with 'service docker restart'
+
+
+#add labels to nodes
+echo "Adding labels to nodes"
+eval $(docker-machine env manager)
+echo "Run the following commands"
+
+docker node update --label-add service=app app
+docker node update --label-add service=app app-counts
+docker node update --label-add service=app app-push
+docker node update --label-add service=app app-refresh
+docker node update --label-add service=celery celery
+
+#create volumes
+echo "Installing DO volume driver plugin"
+
+VOLUMES=(app-files nginx elasticsearch-data db-mongo-data haproxy-conf)
+# TODO functionality for creating shared volumes
+
+
+#deploy stack
+echo "Deploying docker stack stack-compose.yml"
+docker stack deploy --with-registry-auth -c stack-compose.yml dev-stack