apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: ca-sync
  namespace: vault
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: ca-sync
  egress:
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: kube-system
            k8s-app: kube-dns
      toPorts:
        - ports:
            - port: "53"
              protocol: UDP
            - port: "53"
              protocol: TCP
          rules:
            dns:
              - matchName: vault.vault.svc.cluster.local
    - toEndpoints:
        - matchLabels:
            app.kubernetes.io/name: vault
            component: server
      toPorts:
        - ports:
            - port: "8200"
              protocol: TCP
---
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: ca-sync-vault
  namespace: vault
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: vault
      component: server
  ingress:
    - fromEndpoints:
        - matchLabels:
            app.kubernetes.io/name: ca-sync
      toPorts:
        - ports:
            - port: "8200"
              protocol: TCP