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You have an ambassador container that fails to forward traffic to the main container. Which of the following is the most likely cause?

medium📝 Troubleshoot Q6 of 15
Docker - Production Patterns
You have an ambassador container that fails to forward traffic to the main container. Which of the following is the most likely cause?
AThe ambassador container's command has incorrect port forwarding syntax
BThe main container image is missing
CThe ambassador container is running on a different host
DThe Docker daemon is stopped
Step-by-Step Solution
Solution:

  1. Step 1: Analyze ambassador failure reasons

    Incorrect port forwarding syntax in the ambassador command commonly causes forwarding failure.

  2. Step 2: Rule out other causes

    Main container image missing causes container startup failure, not forwarding; different host breaks networking; Docker daemon stopped stops all containers.

  3. Final Answer:

    The ambassador container's command has incorrect port forwarding syntax -> Option A

  4. Quick Check:

    Forwarding failure = wrong ambassador command syntax [OK]
Quick Trick: Check ambassador command syntax first for forwarding issues [OK]
Common Mistakes:
  • Blaming main container image absence
  • Assuming ambassador runs on different host
  • Ignoring Docker daemon status

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