ced4568andClaude Sonnet 5
60fbf0c385
Pre-Phase-1 platform work, approved and tested earlier but not yet committed: - Terminal banner: "RootNode Academy Lab — node: k8s-lab", upstream KubeKosh attribution left untouched in footer/README/LICENSE. - RootNode curriculum mode: scenarios/rootnode-path.json (Foundation -> Workloads -> Networking -> Configuration -> Troubleshooting -> Real Ops -> Capstone), built from existing scenario content grouped by category, no new scenarios invented. New GET /api/curriculum/path endpoint. - Student roster + per-student progress: instructor-roster, pick-your-name login (no password), students/environments-adjacent progress table migrated to a (student_id, scenario_id) composite key so practice progress and exam sessions are isolated per student instead of one global bucket. New /api/roster, /api/login endpoints. - scenarios/data/*.json: added isolation_type metadata (shared_namespace vs ephemeral_cluster) from an audit of which scenarios execute cluster-scoped or node-level commands. This was Tier-1-isolation groundwork that got superseded same-day by the full-ephemeral-per-student architecture (see docs/LAB_ARCHITECTURE.md) — the field is kept as descriptive metadata only, per the note now in scenarios/SCHEMA.md. Not wasted: it's an accurate audit of which scenarios touch cluster-scoped resources, useful independent of isolation model. - .gitignore added (node_modules/, frontend/dist/, *.db, /data/, .env) — none existed before; without it, npm installs during testing would have landed in a commit. Known limitation still open: no frontend UI for any of this yet (login screen, roster-add form, curriculum view) — API-only. No auth on the roster-add endpoint. Co-Authored-By: Claude Sonnet 5 <[email protected]>
41 lines
1.9 KiB
JSON
41 lines
1.9 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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"isolation_type": "shared_namespace",
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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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