Abhinav Sinha
124e5276d4
- Split `scenarios/scenarios.json` into individual JSON files under `scenarios/data/` named `<scenario-id>.json` - Split `scenarios/bundles.json` into individual JSON files under `scenarios/bundles/` named `<bundle-id>.json` - Updated `backend/server.js` to dynamically load scenario and bundle files from their respective directories - Updated documentation in `scenarios/SCHEMA.md` and `README.md` to reflect the new repository layout and contributor workflow Signed-off-by: Abhinav Sinha <[email protected]>
40 lines
1.8 KiB
JSON
40 lines
1.8 KiB
JSON
{
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"id": "restart-policy-mcq",
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"title": "Pod Restart Policies",
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"category": "Core Concepts",
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"difficulty": "Easy",
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"type": "mcq",
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"weight": 3,
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"description": "## Pod Restart Policies\n\nA pod runs a one-time database migration script. If the script **fails** (non-zero exit), the container should be restarted. If it **succeeds** (exit 0), it should **not** be restarted.\n\nWhich `restartPolicy` should be set in the pod spec?",
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"options": [
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{
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"id": "a",
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"text": "`Always` — restarts the container regardless of exit code (this is the default)"
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},
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{
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"id": "b",
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"text": "`OnFailure` — restarts only if the container exits with a non-zero code"
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},
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{
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"id": "c",
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"text": "`Never` — the container is never restarted, even on failure"
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},
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{
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"id": "d",
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"text": "`OnCompletion` — restarts the container only after it completes successfully"
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}
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],
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"correct_option": "b",
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"explanation": "`OnFailure` is the right policy for batch workloads like migration scripts — Kubernetes restarts the container on any non-zero exit code but leaves it alone after a clean exit (code 0). `Always` (the default for Deployment pods) would keep restarting even after success, creating an infinite restart loop. `Never` means no automatic recovery on failure. `OnCompletion` does not exist in Kubernetes — the three valid values are `Always`, `OnFailure`, and `Never`. Jobs automatically use `OnFailure` by default.",
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"hints": [
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{
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"title": "restartPolicy values",
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"body": "Three valid values: `Always` (default for Pods), `OnFailure` (for Jobs/batch), `Never` (run-once, no retry). Check with `kubectl explain pod.spec.restartPolicy`.",
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"command": "kubectl explain pod.spec.restartPolicy"
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}
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],
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"setup_commands": [],
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"default_namespace": "default",
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"teardown_commands": []
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}
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