Making an entrypoint for a multicluster app

Hi everyone,
i’ve been trying to deploy a simple web app using nginx and have every node of the different clusters (2 clusters currently) with an ingress service so i can access the web by using the ip of the node and a path: (http:///web). The thing is, i want to access the web from an unique URL using a LoadBalancer or reverse proxy that send the request to the different nodes automat but i don’t know how to do that without a domain. First time using rancher and kubernetes.
What should i use and how?