Specifically we want to remove a node from cluster and re-add it back in.
If the node you want to remove is still up, ssh into that node and leave the Swarm by running the following:
docker swarm leave
On the master node take note of the node id that left the swarm (
docker node ls) and remove the node by running the following:
docker node rm <id of the node>
Finally you can join your new node by visiting the cluster page and clicking the
"Add Node" button to obtain the node join script. https://help.replicated.com/docs/swarm/customer-installations/add-nodes/