Does Raft orderer work across multiple Kubernetes clusters?

Yueming Xu

If I have 2 orgs contributing orderer nodes using etcd raft consensus, and each org runs its nodes in its own Kubernetes cluster. How can I make Raft work across these 2 orgs? I guess that every orderer node will have to make some ports open to outside of its K8s cluster via e.g., ELB, but I am not sure which port and whether all orderer nodes must be open to public. Is there a concept like the anchor peer, where each org need to make only the anchor peer open to external world?

Or, should I simply make all orderer nodes live in the same Kubernetes cluster as a best practice? Thanks.

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