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[No Audio]

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In this demo, we have three terminals, one for each node.

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First of all, let's have a list of

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nodes with docker-machine ls command. As you can

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see, we have manager, worker-1 and worker-2.

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Now, let's ssh into our manager, just like we did

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in the last demo. Since we want to make this

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manager node, manager, which is quite the literal

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term for its role, let's initialize our Swarm

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using docker swarm init command, and advertise its

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IP address to the other nodes. Once we hit enter,

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the Swarm mode gets initialized and the current

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node which is manager node becomes manager. Now, if

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we want to add workers to this manager node,

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we can run docker swarm join command from respective

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worker nodes along with the token, which is

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generated from this manager node. This token is a

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unique ID, which can be used by other nodes to

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join our manager as a part of its cluster.

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In case we have lost this command or token, we can get it

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back by typing docker swarm join-token worker.

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But this command will only work if the manager has

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been initialized with swarm mode. We will use this

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docker swarm join command along with its token

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from both worker-1 and worker-2, to make sure

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that both of them join this cluster as workers

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while the current node remains manager.

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As you can see, the command has worked successfully from

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worker-1 node and it has joined the swarm

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cluster as a worker.

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Similarly, the command was successful in worker two as well

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and we got similar confirmation.