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Which command correctly initializes a Docker Swarm cluster on the current node?

easy📝 Syntax Q3 of 15
Docker - Production Patterns
Which command correctly initializes a Docker Swarm cluster on the current node?
Adocker swarm start
Bdocker service init
Cdocker cluster create
Ddocker swarm init
Step-by-Step Solution
Solution:

  1. Step 1: Recall Docker Swarm initialization command

    The command to start a Swarm cluster on a node is 'docker swarm init'.

  2. Step 2: Check other options

    'docker swarm start' and 'docker cluster create' are invalid; 'docker service init' does not exist.

  3. Final Answer:

    docker swarm init -> Option D

  4. Quick Check:

    Swarm init command = docker swarm init [OK]
Quick Trick: Use 'docker swarm init' to start a Swarm cluster [OK]
Common Mistakes:
  • Using 'start' instead of 'init'
  • Confusing service commands with cluster commands
  • Inventing non-existent commands

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