A sample app for docker swarm

1. Push to registry or use existing image

   docker build -t sohelamin/docker-swarm-example .
   docker login --username=sohelamin
   docker push sohelamin/docker-swarm-example:latest
   

2. Install docker in master & worker nodes

   sudo apt install apt-transport-https ca-certificates curl software-properties-common
   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"
   sudo apt update
   sudo apt install docker-ce
   sudo usermod -aG docker $USER
   

3. Configure docker swarm in master node

   docker swarm init --advertise-addr <MASTER_NODE_IP>
   

4. Join docker swarm from worker node

   docker swarm join --token docker swarm join --token <TOKEN> <MASTER_NODE_IP>:2377
   

5. Check the connected node in master node

   docker node ls
   

6. Git clone the github repo then deploy stack

   git clone https://github.com/sohelamin/docker-swarm-example.git
   cd docker-swarm-example
   docker stack deploy -c docker-compose.yml docker-swarm-example