[keycloak-user] How to configure an haproxy load balancer in front of a single Keycloak server?

Brief: Are there any instructions for how to configure a load balancer in front of a singer keycloak server? Details: There is a Cloudforms customer that has 2 Cloudforms instance, cf-1 and cf-2 each of which are configured correctly to use keycloak/SAML for authentication. If one points a browser to cf-1 it is correctly redirected to the keycloak server, once valid credentials are entered the browser correctly redirects back to cf-1. The same is true for cf-2. The customer is attempting to set up a haproxy in front of cf-1 and cf-2, e.g.: cf-load-balancer. If the point their browser to cf-load-balancer they are redirected to their keycloak server but the redirect back fails. I have found the instructions for how to set up a load balancer in front of multiple keycloak servers which is a different configuration. Are there any instructions for how to configure a load balancer in front of a singer keycloak server? Thank you! Joe VLcek