[Solved] You want to add a new worker node to an existing swarm. The manager node IP is 10.0.0.... Which sequence of commands correctly adds the worker node and verifies it joined? | Docker

Docker - Swarm

You want to add a new worker node to an existing swarm. The manager node IP is 10.0.0.5 and the join token is SWMTKN-1-abc123. Which sequence of commands correctly adds the worker node and verifies it joined?

AOn worker: <code>docker node add --token SWMTKN-1-abc123 10.0.0.5</code><br>On manager: <code>docker swarm ls</code>

B

On manager: <code>docker swarm join --token SWMTKN-1-abc123 10.0.0.5:2377</code><br>On worker: <code>docker node ls</code>

COn manager: <code>docker node join --token SWMTKN-1-abc123 10.0.0.5</code><br>On worker: <code>docker swarm ls</code>

D

On worker: <code>docker swarm join --token SWMTKN-1-abc123 10.0.0.5:2377</code><br>On manager: <code>docker node ls</code>

Step-by-Step Solution

Solution:

Step 1: Join the worker node to the swarm
The worker node uses docker swarm join --token TOKEN MANAGER_IP:2377 to join the swarm.
Step 2: Verify the node joined on the manager
On the manager node, docker node ls lists all nodes including the new worker.
Final Answer:
On worker: docker swarm join --token SWMTKN-1-abc123 10.0.0.5:2377; On manager: docker node ls -> Option D
Quick Check:
Join on worker, list on manager = correct process [OK]

Quick Trick: Join on worker, verify on manager with 'docker node ls' [OK]

Common Mistakes:

Running join on manager instead of worker
Using wrong commands like 'docker node add'
Trying to list nodes on worker node
Omitting port 2377 in join command

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Which sequence of commands correctly adds the worker node and verifies it joined?

Step 1: Join the worker node to the swarm

Step 2: Verify the node joined on the manager

Final Answer:

Quick Check:

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