How to start a cluster with ray up and local provider?

1

I configured a Ray cluster follow the tutorial Using Ray cluster launcher , but encountered some problems.

My requirements are as follows:
There are currently three machines A, B, and C.
Among them, I executed following code on A, and I want A as my cluster node, but how?

ray up example-full.yaml

and example-full.yaml like:

docker:
    image: "rayproject/ray-ml:latest-cpu" 
    container_name: "ray_container"
    pull_before_run: True
    run_options:   # Extra options to pass into "docker run"
        - --ulimit nofile=65536:65536

provider:
    type: local
    head_ip:  <ipA>
    worker_ips: [ipB, ipC]

I tried set head_ip with the A’s public ip(10.122.134.131) but failed. Ray will try to ssh to this ip, the error like this:

  [1/7] Waiting for SSH to become available
    Running `uptime` as a test.
    Fetched IP:  10.122.134.131
ssh_exchange_identification: read: Connection reset by peer
    SSH still not available (SSH command failed.), retrying in 5 seconds.
ssh_exchange_identification: read: Connection reset by peer
    SSH still not available (SSH command failed.), retrying in 5 seconds.

My goal is simple: Create a cluster with A, B and C and need execute ray up command on one of those machines. Please help me, Thanks.

3

Can anyone help me look into this issue? @Jules_Damji