apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-default-deny
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-dns-egress
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns
      ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-vault-egress
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: vault
          podSelector:
            matchLabels:
              app: vault
      ports:
        - protocol: TCP
          port: 8200
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-keycloak-egress-to-postgres
spec:
  podSelector:
    matchLabels:
      app: keycloak
  policyTypes:
    - Egress
  egress:
    - to:
        - podSelector:
            matchLabels:
              app: postgres
      ports:
        - protocol: TCP
          port: 5432
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-keycloak-client-sync-to-keycloak
spec:
  podSelector:
    matchLabels:
      app: keycloak-client-sync
  policyTypes:
    - Egress
  egress:
    - to:
        - podSelector:
            matchLabels:
              app: keycloak
      ports:
        - protocol: TCP
          port: 8080
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-keycloak-ingress
spec:
  podSelector:
    matchLabels:
      app: keycloak
  policyTypes:
    - Ingress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              app.kubernetes.io/name: traefik
      ports:
        - protocol: TCP
          port: 8080
    - from:
        - podSelector:
            matchLabels:
              app: keycloak-client-sync
      ports:
        - protocol: TCP
          port: 8080
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: auth-system-allow-postgres-ingress
spec:
  podSelector:
    matchLabels:
      app: postgres
  policyTypes:
    - Ingress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: auth-dev
          podSelector:
            matchExpressions:
              - key: app
                operator: In
                values:
                  - auth-server
                  - auth-db-migration
      ports:
        - protocol: TCP
          port: 5432
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: vault
          podSelector:
            matchLabels:
              app: vault
      ports:
        - protocol: TCP
          port: 5432
    - from:
        - podSelector:
            matchLabels:
              app: keycloak
      ports:
        - protocol: TCP
          port: 5432