apiVersion: v1
kind: ServiceAccount
metadata:
  name: backstage
  namespace: backstage
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: backstage-k8s-reader
rules:
  # Core API group
  - apiGroups: [""]
    resources:
      - pods
      - services
      - configmaps
      - endpoints
      - resourcequotas
      - limitranges
      - namespaces
    verbs:
      - get
      - list
      - watch

  # Apps API group
  - apiGroups: ["apps"]
    resources:
      - deployments
      - statefulsets
      - daemonsets
      - replicasets
    verbs:
      - get
      - list
      - watch

  # Batch API group
  - apiGroups: ["batch"]
    resources:
      - jobs
      - cronjobs
    verbs:
      - get
      - list
      - watch

  # Autoscaling API group
  - apiGroups: ["autoscaling"]
    resources:
      - horizontalpodautoscalers
    verbs:
      - get
      - list
      - watch

  # Networking API group
  - apiGroups: ["networking.k8s.io"]
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch

  # Metrics API group (fix for your last 403)
  - apiGroups: ["metrics.k8s.io"]
    resources:
      - pods
      - nodes
    verbs:
      - get
      - list
      - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: backstage-k8s-reader-binding
subjects:
  - kind: ServiceAccount
    name: backstage
    namespace: backstage
roleRef:
  kind: ClusterRole
  name: backstage-k8s-reader
  apiGroup: rbac.authorization.k8s.io