docker swarm update
Warning: this command is part of the Swarm management feature introduced in Docker 1.12, and might be subject to non backward-compatible changes.
swarm update
Usage: docker swarm update [OPTIONS] Update the swarm Options: --cert-expiry duration Validity period for node certificates (default 2160h0m0s) --dispatcher-heartbeat duration Dispatcher heartbeat period (default 5s) --external-ca value Specifications of one or more certificate signing endpoints --help Print usage --task-history-limit int Task history retention limit (default 5)
Updates a swarm with new parameter values. This command must target a manager node.
$ docker swarm update --cert-expiry 720h