Exposing TCP and UDP services

• https://kubernetes.github.io/ingress-nginx/user-guide/exposing-tcp-udp-services/

apiVersion: v1
kind: ConfigMap
metadata:
  name: tcp-services
  namespace: ingress-nginx
data:
  9000: "default/example-go:8080"

NGINX Ingress Controller: ConfigMap ingress-nginx, UnAvailableLoadBalancer, UpdatedLoadBalancer, ingress-nginx-controller, ingress-nginx-controller-controller-admission, nginx.org/ingress-controller