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 This was Tier-1-isolation groundwork that got superseded same-day by the full-ephemeral-per-student architecture (see docs/LAB_ARCHITECTURE.md) — the field is kept as descriptive metadata only, per the note now in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]>
59 lines
2.3 KiB
JSON
59 lines
2.3 KiB
JSON
{
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"id": "broken-deployment",
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"title": "Debug a Failing Deployment",
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"category": "Troubleshooting",
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"isolation_type": "shared_namespace",
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"difficulty": "Medium",
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"type": "task",
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"weight": 8,
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"description": "## Fix the Broken Deployment\n\nA deployment has been pre-created in the `debug` namespace but its pods are not running.\n\n**Your task:** Identify the problem and fix it so that the deployment has **all 3 pods in Ready state**.\n\n> Start by describing the deployment and its pods to find clues about what's wrong.",
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"hints": [
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{
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"title": "Inspect the deployment",
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"body": "Start by listing pods in the debug namespace and describing the failing ones.",
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"command": "kubectl get pods -n debug\nkubectl describe pod -n debug -l app=broken-app"
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},
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{
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"title": "Check events",
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"body": "The Events section in `kubectl describe` usually tells you exactly what's wrong — look for ImagePullBackOff, OOMKilled, or probe failures.",
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"command": "kubectl describe deployment broken-app -n debug"
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},
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{
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"title": "Fix the image tag",
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"body": "If the image tag doesn't exist, update it to a valid one using `kubectl set image`.",
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"command": "kubectl set image deployment/broken-app nginx=nginx:1.25 -n debug"
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}
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],
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"setup_commands": [
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{
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"command": "kubectl create namespace debug"
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},
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{
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"command": "kubectl create deployment broken-app --image=nginx:invalid-tag-99999 --replicas=3 -n debug"
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}
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],
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"validation": {
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"description": "Checks that the broken-app deployment in the debug namespace has 3 ready replicas.",
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"commands": [
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{
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"description": "Deployment 'broken-app' has 3 ready replicas",
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"command": "kubectl get deployment broken-app -n debug -o jsonpath='{.status.readyReplicas}' 2>/dev/null | grep -v '^$' || echo 0",
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"expected_output": "3",
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"match": "exact"
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},
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{
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"description": "No pods in ImagePullBackOff state",
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"command": "kubectl get pods -n debug --no-headers 2>/dev/null | awk '{print $3}' | grep -c 'ImagePullBackOff\\|ErrImagePull' || true",
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"expected_output": "0",
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"match": "exact"
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}
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]
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},
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"default_namespace": "debug",
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"teardown_commands": [
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{
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"command": "kubectl delete namespace debug --ignore-not-found --wait=false"
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}
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]
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}
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