2-namespace-network-policies.yaml

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: namespace-ingress
  namespace: dev
spec:
  podSelector: {}
  ingress:
    - from:
      - namespaceSelector:
          matchLabels:
            env: dev
    - from:
      - namespaceSelector:
          matchLabels:
            env: common
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: namespace-ingress
  namespace: prod
spec:
  podSelector: {}
  ingress:
    - from:
      - namespaceSelector:
          matchLabels:
            env: prod
    - from:
      - namespaceSelector:
          matchLabels:
            env: common
---