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?
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
Step-by-Step Solution
Solution:
Step 1: Investigate green pod health
Pod logs and readiness probes reveal why green pods might crash or fail readiness checks.Step 2: Exclude unrelated checks
CPU usage of blue pods, API server version, or blue pod network policies do not explain green pod crashes.Final Answer:
Pod logs and readiness probes for green pods -> Option CQuick 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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