To configure proxy settings for running SkyPilot on a Kubernetes cluster without internet connectivity, you can follow these steps:

1. Add the proxy environment variables to the pod's env section in the Kubernetes pod YAML file. Here's an example:

apiVersion: v1
kind: Pod
metadata:
  name: example-pod
spec:
  containers:
    - name: example
      image: nginx
      ports:
        - name: http
          containerPort: 80
          protocol: TCP
      env:
        - name: HTTPS_PROXY
          value: <http://proxy-host:3128>
        - name: HTTP_PROXY
          value: <http://proxy-host:3128>
        - name: NO_PROXY
          value: "127.0.0.1,localhost"
        - name: http_proxy
          value: <http://proxy-host:3128>
        - name: https_proxy
          value: <http://proxy-host:3128>
        - name: no_proxy
          value: "127.0.0.1,localhost"

2. Make sure the containers key is added under spec in the SkyPilot config file (~/.sky/config.yaml). Here's an example:

kubernetes:
  pod_config:
    spec:
      containers:
        - env:
          - name: HTTPS_PROXY
            value: <http://proxy-host:3128>
          - name: HTTP_PROXY
            value: <http://proxy-host:3128>
          - name: NO_PROXY
            value: "127.0.0.1,localhost"
          - name: https_proxy
            value: <http://proxy-host:3128>
          - name: http_proxy
            value: <http://proxy-host:3128>
          - name: no_proxy
            value: "127.0.0.1,localhost"

3. Ensure that the proxy settings are correctly specified in both the pod YAML file and the SkyPilot config file.

By following these steps, you should be able to configure the proxy settings for running SkyPilot on a Kubernetes cluster without internet connectivity.