google cloud platform - How to call a service exposed by a Kubernetes cluster from another Kubernetes cluster in same project

Question

I have two service, S1 in cluster K1 and S2 in cluster K2. They have different hardware requirements. Service S1 needs to talk to S2.

I don't want to expose Public IP for S2 due to security reasons. Using NodePorts on K2 cluster's compute instances with network load-balancing takes the flexibility out as I would have to add/remove K2's compute instances in target pool each time a node is added/removed in K2.

Is there something like "service-selector" for automatically updating target-pool? If not, is there any other better approach for this use-case?

Answer 1

Waitting for answers