I installed istio in my k8s environment with default profile. (./istioctl manifest apply)
After it is running and I tried the tcp-echo sample. I applied the tcp-echo-services.yaml, tcp-echo-all-v1.yaml and followed the tcp-traffic-shifting to do some test.
But I find that the port 31400 is not up and listed in the istio-ingressgateway service of isitio-system namespace. Do I need to modify this service and manually add it? Or it is supposed to be automatically added?