How do you connect Ray Client to a cluster managed by a coordinator server?

Ray Clusters
1

We have two Ray clusters running on our on-premise nodes via Ray’s coordinator_server.

I know we can run scripts on each cluster via ray exec like this:

ray exec cluster1.yaml script1.py
ray exec cluster2.yaml script2.py

But how would we use Ray Client to connect to the desired cluster? Usually we would do something like:

ray.init("ray://<head_node_host>:10001")

But since the coordinator somewhat arbitrarily chooses the head node during cluster start up, how would a Ray Client script know what the head node host is?

It seems like there should be some command like:

ray.init(coordinator="10.0.0.1:20000", cluster="cluster1")

But I haven’t been able to find anything like that in the docs. Is there a way to use Ray Client with coordinator-managed clusters?