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After switching traffic to green deployment, users report errors. You suspect the green pods are crashing. What should you check first?

medium📝 Troubleshoot Q7 of 15
Kubernetes - Advanced Deployment Patterns
After switching traffic to green deployment, users report errors. You suspect the green pods are crashing. What should you check first?
AThe CPU usage of blue pods
BThe Kubernetes API server version
CPod logs and readiness probes for green pods
DThe network policies applied to blue pods
Step-by-Step Solution
Solution:
  1. Step 1: Investigate green pod health

    Pod logs and readiness probes reveal why green pods might crash or fail readiness checks.
  2. Step 2: Exclude unrelated checks

    CPU usage of blue pods, API server version, or blue pod network policies do not explain green pod crashes.
  3. Final Answer:

    Pod logs and readiness probes for green pods -> Option C
  4. Quick Check:

    Crash cause = Check logs and readiness probes [OK]
Quick Trick: Logs and probes reveal pod health issues fast [OK]
Common Mistakes:
  • Checking unrelated pods or cluster components
  • Ignoring readiness probe failures

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