# Backend API: allow ingress from ingress controller and in-namespace, egress to PostgreSQL, Redis, DNS
# Dependencies: PostgreSQL (5432), Redis (6379), DNS (kube-system)
# If PostgreSQL/Redis are external, egress will need ipBlock or adjust namespaceSelector
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: backend-api-allow
  namespace: veza-production
spec:
  podSelector:
    matchLabels:
      app: veza-backend-api
  policyTypes:
  - Ingress
  - Egress
  ingress:
  - from:
    - namespaceSelector:
        matchLabels:
          name: ingress-nginx
    ports:
    - protocol: TCP
      port: 8080
  - from:
    - podSelector: {}
    ports:
    - protocol: TCP
      port: 8080
  egress:
  - to:
    - ipBlock:
        cidr: 0.0.0.0/0
    ports:
    - protocol: TCP
      port: 5432
    - protocol: TCP
      port: 6379
  - to:
    - namespaceSelector:
        matchLabels:
          kubernetes.io/metadata.name: kube-system
    ports:
    - protocol: UDP
      port: 53