# External Secrets' three pods reach each other, DNS and the API server
# (the node, port 16443); the controller also reads Vault
# (vault-active.vault.svc:8200, which vault/networkpolicy.yaml lets it
# into). Besides their own namespace they take connections only from the
# node: the API server calls the webhook from there and the kubelet probes
# come from there too (10.1.7.64 is the node's Calico VXLAN address,
# projectcalico.org/IPv4VXLANTunnelAddr). The Password generator behind
# gatus/backup-check-token needs no network. The chart's Application
# (apps/templates/external-secrets-helm.yaml) only installs the chart, so
# this folder gets an Application of its own, external-secrets-folder.
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress
  ingress:
    - from:
        - podSelector: {}
    - from:
        - ipBlock:
            cidr: 192.168.1.204/32
        - ipBlock:
            cidr: 10.1.7.64/32
  egress:
    - to:
        - podSelector: {}
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns
      ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
    - to:
        - ipBlock:
            cidr: 192.168.1.204/32
      ports:
        - port: 16443
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: controller-to-vault
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: external-secrets
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: vault
          podSelector:
            matchLabels:
              app.kubernetes.io/name: vault
      ports:
        - port: 8200