gateway/multi-cluster/mcg-internal-blue-green/gateway.yaml

kind: Namespace
apiVersion: v1
metadata:
  name: mcgi-bg
---
kind: Gateway
apiVersion: networking.x-k8s.io/v1alpha1
metadata:
  name: multi-cluster-gateway
  namespace: mcgi-bg
spec:
  gatewayClassName: gke-l7-rilb-mc
  listeners:  
  - protocol: HTTP
    port: 80
    routes:
      kind: HTTPRoute
      selector:
        matchLabels:
          gateway: multi-cluster-gateway