Access Ray Dashboard from the local network - Container Service for Kubernetes

Ray provides a web dashboard that allows you to monitor and debug the status of Ray applications. After you create a Ray cluster in a Container Service for Kubernetes (ACK) cluster, you can run the kubectl port-forward command to access Ray Dashboard from the local network.

Prerequisites

A Ray cluster is created based on ACK.

Procedure

Note

The display of metrics in Ray Dashboard is disabled by default.

Run the following command to query the service information of the Ray cluster in the namespace:

kubectl get svc -n ${RAY_CLUSTER_NS}

Expected output:

NAME                           TYPE        CLUSTER-IP        EXTERNAL-IP   PORT(S)                                         AGE
myfirst-ray-cluster-head-svc   ClusterIP   192.XX.XX.188   <none>        10001/TCP,8265/TCP,8080/TCP,6379/TCP,8000/TCP   18m

Run the following command to use port-forward to forward traffic from the local port 8265 to the port 8265 of the Ray cluster:
```
kubectl port-forward svc/myfirst-ray-cluster-head-svc --address 0.0.0.0 8265:8265 -n ${RAY_CLUSTER_NS}
```
The following log is printed:
```
Forwarding from 0.0.0.0:8265 -> 8265
```
Access the address http://127.0.0.1:8265/ in the local browser.

What to do next

For more information about how to submit a job to run distributed tasks in a Ray cluster, see Submit a Ray job.
For information about how to use the Ray autoscaler to automatically scale Elastic Compute Service (ECS) nodes or virtual Elastic Container Instance nodes, see Elastic scaling based on the Ray autoscaler and ACK autoscaler and Elastic scaling of Elastic Container Instance nodes based on the Ray autoscaler.