Setup Swarm

With at least a single node running and Docker installed, we need to setup a Docker Swarm Cluster.

This is quite easy, and can be done with a single command (replace the IP address with that of the node).

First Node

docker swarm init --advertise-addr 192.168.1.25

The IP is not strictly necessary, but especially when running on a host with multiple IP's, this prevents issues with Docker choosing the wrong address and multiple nodes not being able to talk to one another.

Obtain a join token using the following command:

docker swarm join-token worker

For all the other nodes, run the following command to connect to the first node (replace the IP address with that of the node):

All Other Nodes

docker swarm join <token> --advertise-addr 192.168.1.26

Deployments can only be done from manager nodes. It's advisable to have either 3 or 5 manager nodes in a cluster.