gateway/single-cluster/global-l7-xlb/gateway.yaml

---
kind: Gateway
apiVersion: networking.x-k8s.io/v1alpha1
metadata:
  name: external-http
spec:
  gatewayClassName: gke-l7-gxlb
  listeners:
  - protocol: HTTPS
    port: 443
    routes:
      kind: HTTPRoute
      namespaces:
        from: "All"
    tls:
      mode: Terminate
      options:
        networking.gke.io/pre-shared-certs: gxlb-cert
  addresses:
  - type: NamedAddress
    value: gke-gxlb-ip