cert-manager-webhook-example/deploy/cert-manager-ibm-cis-webhook/templates/networkpolicies.yaml

{{- if .Values.networkPolicies.enabled }}
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ include "cert-manager-ibm-cis-webhook.fullname" . }}-allow-dns
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: {{ include "cert-manager-ibm-cis-webhook.name" . }}
  policyTypes:
  - Egress
  egress:
  - to:
    - namespaceSelector: {}
      podSelector:
        matchLabels:
          k8s-app.kubernetes.io/name: kube-dns
    ports:
    - protocol: UDP
      port: 53
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ include "cert-manager-ibm-cis-webhook.fullname" . }}-allow-ingress
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: {{ include "cert-manager-ibm-cis-webhook.name" . }}
  policyTypes:
  - Ingress
  ingress:
  - from:
    - podSelector: {}
    - namespaceSelector: {}
    ports:
    - protocol: TCP
      port: {{ .Values.containerPort }}
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: allow-egress-to-k8s-api
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: {{ include "cert-manager-ibm-cis-webhook.name" . }}
  policyTypes:
    - Egress
  egress:
    - {}
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: allow-egress-to-cis
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: {{ include "cert-manager-ibm-cis-webhook.name" . }}
  policyTypes:
    - Egress
  egress:
  - ports:
    - port: 443
{{- end }}