9.4. URL scheme for external routes

The URL scheme of external routes defaults to HTTPS for enhanced security. This scheme is determined by the default-external-scheme key in the KnativeServing custom resource (CR) spec.

...
spec:
  config:
    network:
      default-external-scheme: "https"
...

...
spec:
  config:
    network:
      default-external-scheme: "http"
...