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How do you upgrade swarm managers and agents?

(Lee Calcote) #1

How do you avoid downtime when performing an upgrade? Is there a host maintenance mode? Is there a deployment tool that will update all agents or do you have to go to each host and update the swarm agent individually?

(Dvohra) #2

What is meant by upgrade? Add more nodes? Or, upgrade the version?

(Lee Calcote) #3

Upgrade the version of Swarm Manager and Agent software.

I understand that when new nodes are added that the cluster is not rebalanced.

(Dvohra) #4

The Docker version would also need to be updated. Reinstalling the swarm manager and joining the updated version swarm agents would be easier than upgrading.