Finding ingress gateway IP (Istio)
By default, Knative uses Istio as the ingress gateway (load balancer).
This gateway is exposed externally to the world on a TCP/IP (Layer 3/4) load
balancer created via Kubernetes
To find its IP address:
$ kubectl get service -n=istio-system "istio-ingressgateway" NAME TYPE EXTERNAL-IP istio-ingressgateway LoadBalancer 203.0.113.64
NOTE: On Cloud Run for GKE, the ingress gateway is deployed on a different namespace with a different name:
$ kubectl get service -n gke-system "istio-ingress"