apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: pgweb
  namespace: pgweb
spec:
  # Only traefik may reach pgweb, so authentik can't be bypassed.
  egress:
    - ports:
        - port: 53
          protocol: UDP
        - port: 53
          protocol: TCP
      to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns
    - ports:
        - port: 5432
          protocol: TCP
      to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: postgres
          podSelector:
            matchLabels:
              cnpg.io/cluster: postgres
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: traefik
      ports:
        - port: 8081
          protocol: TCP
  podSelector:
    matchLabels:
      app.kubernetes.io/name: pgweb
  policyTypes:
    - Ingress
    - Egress