DockerSwarmLab.txt

on Master:
 

yum install docker
service docker  start
docker swarm init --advertise-addr $(hostname -i)

yum install git -y
git clone https://github.com/docker/example-voting-app

cd example-voting-app
cat docker-stack.yml

docker stack deploy --compose-file=docker-stack.yml voting_stack
docker stack ls
For each services do ---
docker stack services voting_stack
docker service ps voting_stack_vote

scale a service:
docker service scale voting_stack_vote=5
docker service ls
docker service update --replicas 2 voting_stack_vote
docker service update --replicas 2 voting_stack_redis
  
On Slave:
yum install docker
service docker  start
docker swarm join --token SWMTKN-1-3gs4q4rqygek2dalg3adauucjgqem3d6058yzwwt7rq6kugl01-1s0r6qevn4idfy87nmy11lhvj 192.168.0.28:2377