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 This was Tier-1-isolation groundwork that got superseded same-day by the full-ephemeral-per-student architecture (see docs/LAB_ARCHITECTURE.md) — the field is kept as descriptive metadata only, per the note now in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]>
55 lines
2.0 KiB
JSON
55 lines
2.0 KiB
JSON
{
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"id": "node-label-selector",
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"title": "Node Labels and nodeSelector",
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"category": "Cluster Administration",
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"isolation_type": "ephemeral_cluster",
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"difficulty": "Easy",
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"type": "task",
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"weight": 5,
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"description": "## Node Labels and nodeSelector\n\nLabelling nodes lets you constrain which nodes a pod can be scheduled on, using `nodeSelector` in the pod spec.\n\n**Your task:**\n\n1. Add the label `disk=ssd` to node `k8s-lab`\n2. Create a Pod named `ssd-pod` using `nginx:alpine` that uses `nodeSelector` to target nodes with `disk=ssd`",
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"hints": [
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{
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"title": "Label the node",
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"body": "Use `kubectl label node <node-name> key=value`.",
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"command": "kubectl label node k8s-lab disk=ssd --overwrite"
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},
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{
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"title": "Use nodeSelector in pod spec",
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"body": "Add `nodeSelector: disk: ssd` under `spec` in the pod manifest.",
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"command": "cat <<EOF | kubectl apply -f -\napiVersion: v1\nkind: Pod\nmetadata:\n name: ssd-pod\nspec:\n nodeSelector:\n disk: ssd\n containers:\n - name: app\n image: nginx:alpine\nEOF"
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}
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],
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"setup_commands": [],
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"validation": {
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"commands": [
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{
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"description": "Node 'k8s-lab' has label disk=ssd",
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"command": "kubectl get node k8s-lab -o jsonpath='{.metadata.labels.disk}'",
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"expected_output": "ssd",
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"match": "exact"
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},
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{
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"description": "Pod 'ssd-pod' has nodeSelector disk=ssd",
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"command": "kubectl get pod ssd-pod -o jsonpath='{.spec.nodeSelector.disk}'",
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"expected_output": "ssd",
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"match": "exact"
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},
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{
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"description": "Pod 'ssd-pod' is Running",
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"command": "kubectl get pod ssd-pod -o jsonpath='{.status.phase}'",
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"expected_output": "Running",
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"match": "exact"
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}
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]
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},
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"default_namespace": "default",
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"teardown_commands": [
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{
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"command": "kubectl label node k8s-lab disk- 2>/dev/null || true"
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},
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{
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"command": "kubectl delete pod ssd-pod --ignore-not-found --grace-period=0 --force"
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}
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]
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}
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