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Day 3: add probes question to Kubernetes quiz - #1891
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| "Set restartPolicy to OnFailure in the pod spec" | ||
| ], | ||
| "correctAnswer": 0, | ||
| "explanation": "Only the liveness probe can trigger a container restart: when it fails, the kubelet kills the container. For slow-starting apps the fix is a startupProbe (which gates the liveness probe until the app is up) or a generous initialDelaySeconds on the liveness probe. The readiness probe only controls whether the pod receives traffic - it never restarts anything.", |
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When a configured startupProbe reaches its failureThreshold, Kubernetes also kills the container and applies its restart policy; it does not merely gate the liveness probe. The unqualified claim here therefore teaches a false distinction in this exact slow-start scenario and may lead readers to add a startup probe whose own probe budget is still shorter than 60 seconds; clarify that readiness failures never restart containers, while both liveness and startup probe failures can.
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Adds an intermediate multiple-choice question on liveness vs readiness probes (slow-starting app restart loop scenario) to the Kubernetes Fundamentals quiz. Updates totalPoints (115 -> 128) and difficultyLevels accordingly.
Part of the 8-Day Hacktoberfest Challenge (Day 3).