apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: egress-postgres2prometheuspushgw
spec:
  podSelector:
    matchLabels:
      cluster-name: postgres-cluster
  egress:
    - to:
      - namespaceSelector:
          matchLabels:
            kubernetes.io/metadata.name: monitoring
        podSelector:
          matchLabels:
            app.kubernetes.io/instance: prometheus-pushgateway
      ports:
      - protocol: TCP
        port: 9091
  policyTypes:
    - Egress