In Docker Swarm, to list the nodes in the cluster, you use the docker node ls command. This command displays information about all nodes in the Swarm, including their status, availability, and roles.
docker node ls: This is the correct command to list the nodes in a Docker Swarm cluster.
The other options are incorrect:
A: docker-swarm listnodes is not a valid Docker command.
B: docker engine ls lists Docker engines but not specifically Swarm nodes.
D: docker machine ls lists Docker machines managed by Docker Machine, not Swarm nodes.
E: docker swarm nodes is not a valid command.
References:
Docker Documentation - node ls
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