I have a use case where i got multiple K8s clusters setup at different locations.
I have a gateway bridge, loraserver and lora-app-server running in those individual K8s clusters.
Am trying to think through a way to separate out the join server so that i have a single join process across all my multiple network servers.
Any recommendations on how this could be achieved?
Please see the [join_server.default] section in loraserver.toml, you could point that to a centralized join-server. The API that is expected is documented in the LoRaWAN Backend Interface Specification 
Thanks Orne. Right now, the join server is part of the same container as the app server. So i guess i can run the app server in the cloud and just open up the ports for the join server making it centralized.
And i run multiple network server/app server combos in a distributed fashion all pointing to the same join server.
Is that pattern recommended?