could you may be verify one more config for me if you don't mind. I have almost 5/10 grpc services to route the traffic to, I will just add one more service to it and if that looks good I will do the rest.
I also figured out 1. ingress is not required internally 2. simply installing istiod and istio-base as in documentation will work for grpc 3. only virtual service is required to route the traffic for grpc 4. need to setup peerauthentication to disable to disable mtls 5. can set to auth-policy to allow for communication between services