Create MariaDB cluster across 2 seperated OpenShift clusters

Good day,

I am looking to create a MariaDB cluster in OpenShift/Kubernetes. The caveat, is that my cluster need to be ''spanned'' across 2 seperated OpenShift/Kubernetes clusters.

I am trying to wrap my head around on how to do that.

Doing so on VM is ''easy''... But across 2 separated OpenShift/K8s....

P.S: if there is another solution with MySQL, I am a taker...