simple-ingress-template.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: backend-ingress-name # INGRESS_NAME
  labels:
    # we pass selector, to easy list specific Ingresses:
    # kubectl get ing --selector=KEY_INGRESS_SELECTOR
    application: backend # KEY_INGRESS_SELECTOR: VALUE_INGRESS_SELECTOR
  annotations:
    # you can apply additional annotations here, to enable cors for example
    # all example annotations (kubernetes/ingress-nginx controller) you can find here:
    # https://github.com/kubernetes/ingress-nginx/blob/master/docs/user-guide/nginx-configuration/annotations.md
spec:
  rules:
    - host: my-app.domain.com # HOST_NAME
      http:
        paths:
          - path: / # path for the host
            backend:
              # thanks to this section, we specify, 
              # to which Service the Ingress should forward the traffic
              serviceName: backend-service-name # SERVICE_NAME
              servicePort: 80 # SERVICE_PORT