{
  "id": "cks-image-pull-secret",
  "title": "Private Registry Image Pull Secret",
  "category": "Supply Chain Security",
  "difficulty": "Easy",
  "type": "task",
  "weight": 4,
  "description": "## Private Registry Image Pull Secret\n\nIn production, images are stored in private registries that require authentication. Kubernetes uses `imagePullSecrets` to securely store registry credentials and inject them at image pull time.\n\n**Your task:**\n\n1. Create a Docker registry Secret named `registry-creds` for registry `registry.company.com` with:\n   - Username: `ci-bot`\n   - Password: `s3cr3t-token`\n   - Email: `ci@company.com`\n2. Create a Pod named `private-pod` using `nginx:alpine` that references `registry-creds` as an `imagePullSecret`\n\n```bash\n# Verify:\nkubectl get pod private-pod -o jsonpath='{.spec.imagePullSecrets[0].name}'\n```",
  "hints": [
    {
      "title": "Create a docker-registry Secret",
      "body": "Use `kubectl create secret docker-registry` with the four required flags.",
      "command": "kubectl create secret docker-registry registry-creds \\\n  --docker-server=registry.company.com \\\n  --docker-username=ci-bot \\\n  --docker-password=s3cr3t-token \\\n  --docker-email=ci@company.com"
    },
    {
      "title": "Reference imagePullSecrets in a Pod",
      "body": "Add `spec.imagePullSecrets[].name` to the pod spec with the name of your secret.",
      "command": "cat <<EOF | kubectl apply -f -\napiVersion: v1\nkind: Pod\nmetadata:\n  name: private-pod\nspec:\n  imagePullSecrets:\n  - name: registry-creds\n  containers:\n  - name: app\n    image: nginx:alpine\nEOF"
    }
  ],
  "setup_commands": [],
  "validation": {
    "commands": [
      {
        "description": "Secret 'registry-creds' has docker-registry type",
        "command": "kubectl get secret registry-creds -o jsonpath='{.type}'",
        "expected_output": "kubernetes.io/dockerconfigjson",
        "match": "exact"
      },
      {
        "description": "Pod 'private-pod' references registry-creds as imagePullSecret",
        "command": "kubectl get pod private-pod -o jsonpath='{.spec.imagePullSecrets[0].name}'",
        "expected_output": "registry-creds",
        "match": "exact"
      }
    ]
  },
  "default_namespace": "default",
  "teardown_commands": [
    {
      "command": "kubectl delete pod private-pod --ignore-not-found --grace-period=0 --force"
    },
    {
      "command": "kubectl delete secret registry-creds --ignore-not-found"
    }
  ]
}