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 This was Tier-1-isolation groundwork that got superseded same-day by the full-ephemeral-per-student architecture (see docs/LAB_ARCHITECTURE.md) — the field is kept as descriptive metadata only, per the note now in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]>
67 lines
3.0 KiB
JSON
67 lines
3.0 KiB
JSON
{
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"id": "configmap-volume",
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"title": "Mount ConfigMap as Volume",
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"category": "Configuration",
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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": 7,
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"description": "## Inject Configuration via a ConfigMap Volume\n\nAn application reads its configuration from files on disk at `/etc/app-config/`.\n\n**Your tasks:**\n1. Create a **ConfigMap** named `app-config` in the `default` namespace with the following key-value pairs:\n - `environment`: `production`\n - `log_level`: `warn`\n - `max_connections`: `200`\n2. Create a **Pod** named `config-reader` using image `busybox:1.36`\n3. Mount the ConfigMap as a **volume** at `/etc/app-config` inside the container\n4. The pod should run the command: `sleep 3600`",
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"hints": [
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{
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"title": "Create the ConfigMap",
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"body": "Use `--from-literal` for each key-value pair.",
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"command": "kubectl create configmap app-config --from-literal=environment=production --from-literal=log_level=warn --from-literal=max_connections=200"
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},
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{
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"title": "Write the Pod manifest",
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"body": "Use a heredoc piped directly to kubectl apply -f - to avoid writing to a temp file.",
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"command": "cat <<EOF | kubectl apply -f -\napiVersion: v1\nkind: Pod\nmetadata:\n name: config-reader\nspec:\n containers:\n - name: reader\n image: busybox:1.36\n command: [\"sleep\", \"3600\"]\n volumeMounts:\n - name: config-vol\n mountPath: /etc/app-config\n volumes:\n - name: config-vol\n configMap:\n name: app-config\nEOF"
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},
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{
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"title": "Verify",
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"body": "Confirm that the ConfigMap files are visible inside the container.",
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"command": "kubectl exec config-reader -- ls /etc/app-config"
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}
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],
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"setup_commands": [],
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"validation": {
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"description": "Verifies ConfigMap exists with correct keys and the pod mounts it at the right path.",
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"commands": [
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{
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"description": "ConfigMap 'app-config' exists",
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"command": "kubectl get configmap app-config -o jsonpath='{.metadata.name}'",
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"expected_output": "app-config",
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"match": "exact"
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},
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{
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"description": "ConfigMap has key 'environment=production'",
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"command": "kubectl get configmap app-config -o jsonpath='{.data.environment}'",
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"expected_output": "production",
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"match": "exact"
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},
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{
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"description": "Pod 'config-reader' is Running",
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"command": "kubectl get pod config-reader -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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"description": "ConfigMap is mounted at /etc/app-config",
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"command": "kubectl exec config-reader -- ls /etc/app-config",
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"expected_output": "environment",
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"match": "contains"
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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 delete configmap app-config --ignore-not-found"
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},
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{
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"command": "kubectl delete pod config-reader --ignore-not-found --grace-period=0 --force"
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}
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]
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}
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