Setting-Up Docker Swarm Cluster

Configuring A Swarm Manager

Install Docker on Ubuntu 18.04
Be sure to use the private IP (NOT the public IP) for the --advertise-addr:
```
docker swarm init --advertise-addr <swarm manager private IP>
```
This shows some basic information about the current status of the swarm:
```
docker info
```
List the current nodes in the swarm and their status:
```
docker node ls
```

Configuring Swarm Nodes

Install Docker on Ubuntu 18.04
Get a join token from the manager. Run this command on the swarm manager:
```
docker swarm join-token worker
```
Now copy the docker swarm join command provided in the output and run it on both workers:
```
docker swarm join --token <token> <swarm manager private IP>:2377
```
On the swarm manager, verify that the two worker nodes have successfully joined:
```
docker node ls
```