I’m also trying to get started with running Ray/RLlib on a local cluster (see other thread) and am currently stuck at the same point:
I run ray up cluster.yaml on my laptop and it completes without errors but the dashboard only shows the head node.
When training an RL agent, it’s also only performed on the head node (according to the Ray dashboard and htop running on all cluster nodes).
I did not use the docker option though. Instead, I manually installed ray 1.2.0 and my custom environment on all machines of the cluster.
@sebzur Any news on this? Did you resolve the issue somehow?