Function runDemote

cli/command/node/demote.go:26–38

(ctx context.Context, dockerCLI command.Cli, nodes []string)

}

func runDemote(ctx context.Context, dockerCLI command.Cli, nodes []string) error {
	demote := func(node *swarm.Node) error {
		if node.Spec.Role == swarm.NodeRoleWorker {
			_, _ = fmt.Fprintf(dockerCLI.Out(), "Node %s is already a worker.\n", node.ID)
			return errNoRoleChange
		}
		node.Spec.Role = swarm.NodeRoleWorker
		return nil
	}
	return updateNodes(ctx, dockerCLI.Client(), nodes, demote, func(nodeID string) {
		_, _ = fmt.Fprintf(dockerCLI.Out(), "Manager %s demoted in the swarm.\n", nodeID)
	})
}