apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: postgres
  namespace: postgres
spec:
  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: 6443
          protocol: TCP
    - to:
        - podSelector:
            matchLabels:
              cnpg.io/cluster: postgres
  ingress:
    - from:
        - podSelector:
            matchLabels:
              cnpg.io/cluster: postgres
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: cnpg-system
          podSelector:
            matchLabels:
              app.kubernetes.io/name: cloudnative-pg
      ports:
        - port: 8000
          protocol: TCP
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: authentik
          podSelector:
            matchLabels:
              app.kubernetes.io/name: authentik
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: monitoring
          podSelector:
            matchLabels:
              app.kubernetes.io/name: grafana
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: pgweb
          podSelector:
            matchLabels:
              app.kubernetes.io/name: pgweb
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: redoost
      ports:
        - port: 5432
          protocol: TCP
  podSelector:
    matchLabels:
      cnpg.io/cluster: postgres
  policyTypes:
    - Ingress
    - Egress