apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: vault-server-default-deny
spec:
  podSelector:
    matchLabels:
      app: vault
  policyTypes:
    - Ingress
    - Egress
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: vault-server-allow-dns-egress
spec:
  podSelector:
    matchLabels:
      app: vault
  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: vault-server-allow-postgres-egress
spec:
  podSelector:
    matchLabels:
      app: vault
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: auth-system-dev
          podSelector:
            matchLabels:
              app: postgres
      ports:
        - protocol: TCP
          port: 5432
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: vault-server-allow-kubernetes-api-egress
spec:
  podSelector:
    matchLabels:
      app: vault
  policyTypes:
    - Egress
  egress:
    - to:
        - ipBlock:
            cidr: 10.43.0.1/32
      ports:
        - protocol: TCP
          port: 443
    - to:
        - ipBlock:
            cidr: 10.208.141.98/32
      ports:
        - protocol: TCP
          port: 6443
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: vault-server-allow-ingress-from-workloads
spec:
  podSelector:
    matchLabels:
      app: vault
  policyTypes:
    - Ingress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: auth-dev
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: auth-system-dev
      ports:
        - protocol: TCP
          port: 8200
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: vault-agent-injector-webhook-ingress
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: vault-agent-injector
  policyTypes:
    - Ingress
  ingress:
    - ports:
        - protocol: TCP
          port: 8080