Is it possible to configure k8s nginx-ingress as a LB to have a K8s Service actively connect to external backend hosted on external hosts/ports (where one will be enabled at a time, connecting back to the cluster service)?
Similar to envoy proxy? This is on vanilla K8s, on-prem.
So rather than balance load from
client -> cluster -> service.
I am looking for
service -> nginx-ingress -> external-backend.