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
1.6 KiB
JSON
40 lines
1.6 KiB
JSON
{
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"id": "container-logging-mcq",
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"title": "Container Logging and Monitoring",
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"category": "Troubleshooting",
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"difficulty": "Easy",
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"type": "mcq",
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"weight": 3,
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"description": "## Container Logging and Monitoring\n\nA pod `worker-abc` has crashed and restarted. You want to see the logs from the **previous** (crashed) container instance, not the current one.\n\nWhich command retrieves logs from the previously crashed container?",
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"options": [
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{
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"id": "a",
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"text": "`kubectl logs worker-abc --all-containers`"
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},
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{
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"id": "b",
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"text": "`kubectl logs worker-abc --previous`"
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},
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{
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"id": "c",
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"text": "`kubectl logs worker-abc --restart`"
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},
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{
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"id": "d",
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"text": "`kubectl describe pod worker-abc | grep log`"
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}
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],
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"correct_option": "b",
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"explanation": "`kubectl logs <pod> --previous` (or `-p`) retrieves logs from the **terminated previous container** instance in a pod. This is critical for debugging CrashLoopBackOff scenarios where the container restarts before you can inspect its logs. `--all-containers` shows logs from all containers in the current run. `kubectl describe` shows events and status but not stdout/stderr logs.",
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"hints": [
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{
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"title": "Useful kubectl logs flags",
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"body": "`--previous`/`-p`: previous container | `--follow`/`-f`: stream | `--since=1h`: last hour | `--tail=50`: last 50 lines | `--timestamps`: show timestamps",
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"command": "kubectl logs worker-abc --previous --tail=50"
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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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