apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: invoice-ninja
  labels:
    app.kubernetes.io/name: invoice-ninja
    app.kubernetes.io/component: invoice-ninja
spec:
  egress:
  - to:
    - podSelector:
        matchLabels:
          app.kubernetes.io/part-of: invoice-ninja
  - to:
    - namespaceSelector:
        matchLabels:
          kubernetes.io/metadata.name: kube-system
      podSelector:
        matchLabels:
          k8s-app: kube-dns
    ports:
    - port: 53
      protocol: UDP
    - port: 53
      protocol: TCP
  - to:
    - ipBlock:
        cidr: 172.30.0.12/32
    ports:
    - port: 25
  - to:
    - namespaceSelector:
        matchLabels:
          kubernetes.io/metadata.name: ingress-nginx
    ports:
    - port: 80
    - port: 443
  - to:
    - ipBlock:
        cidr: 172.30.0.1/32
    ports:
    - port: 3128
  podSelector:
    matchLabels:
      app.kubernetes.io/component: invoice-ninja
  policyTypes:
  - Egress