master node

>>> ray start --head --node-ip-address=10.244.166.156 --port=28999
Usage stats collection is enabled. To disable this, add `--disable-usage-stats` to the command that starts the cluster, or run the following command: `ray disable-usage-stats` before starting the cluster. See <https://docs.ray.io/en/master/cluster/usage-stats.html> for more details.

Local node IP: 10.244.166.156

--------------------
Ray runtime started.
--------------------

Next steps
  To add another node to this Ray cluster, run
    ray start --address='10.244.166.156:28999'
  
  To connect to this Ray cluster:
    import ray
    ray.init(_node_ip_address='10.244.166.156')
  
  To submit a Ray job using the Ray Jobs CLI:
    RAY_ADDRESS='<http://127.0.0.1:8265>' ray job submit --working-dir . -- python my_script.py
  
  See <https://docs.ray.io/en/latest/cluster/running-applications/job-submission/index.html> 
  for more information on submitting Ray jobs to the Ray cluster.
  
  To terminate the Ray runtime, run
    ray stop
  
  To view the status of the cluster, use
    ray status
  
  To monitor and debug Ray, view the dashboard at 
    127.0.0.1:8265
  
  If connection to the dashboard fails, check your firewall settings and network configuration.