Does anyone know how we need to configure SugarCRM 12 to work with Redis cluster?

We have Redis cluster installed in a new environment we are creating for a client. Redis is up and working, but we are having issues getting it to work with our Sugar 12.0.1 enterprise. Would anybody have any additional documentation?  Can somebody help us?

We have Sugar installed and working.   We have it working with one Redis server but are trying to configure it to use the cluster.   When we point it to the cluster Sugar quits working.  We have two application servers setup behind a load balancer.   We are using  RHEL and MySQL.

the specific questions is:

How do we configure two separate SugarCRM app servers to use the same Redis Cluster for a shared “External cache”?

We see that a Redis container can be used for External Cache but not if that container is a cluster and the data stored in that cache is in a different shard. Redis expects that the client will support an “ASK” command. We are using the PHP redis.so and this module supports Redis clusters and “ASK”.