moby/docs/reference/commandline/node_promote.md

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/reference/commandline/node_promote/	The node promote command description and usage	node, promote	docker node promote

Usage:  docker node promote NODE [NODE...]

Promote one or more nodes to manager in the swarm

Options:
      --help   Print usage

Promotes a node to manager. This command targets a docker engine that is a manager in the swarm.

$ docker node promote <node name>

Related information

• node demote