Manage Swarm
Swarm This command works with the Swarm orchestrator.
$ docker swarm COMMAND
Manage the swarm.
| Command | Description | 
| docker swarm ca | Display and rotate the root CA | 
| docker swarm init | Initialize a swarm | 
| docker swarm join | Join a swarm as a node and/or manager | 
| docker swarm join-token | Manage join tokens | 
| docker swarm leave | Leave the swarm | 
| docker swarm unlock | Unlock swarm | 
| docker swarm unlock-key | Manage the unlock key | 
| docker swarm update | Update the swarm | 
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    https://docs.docker.com/engine/reference/commandline/swarm/