Setting Up Redis High Availability (HA) on open-shift cluster and virtual machines (VM's)

I have a spring boot application which is deployed on open-shift cluster. The application uses Redis, so for that I have also deployed redis docker image on open-shift registry.This redis image is simple one.

I want my redis to be Highly Available.I have read about redis sentinal but got mostly the theoretical part.I wanted to know how can I set redis HA on open-shift and connect it to my application as I have done with simple redis.

And also How can I set up redis HA on virtual machines(VM's)

Any Thoughts on this ?