[SOLVED] KNative with Istio Listening on Port 8080

KNative with Istio Listening on Port 8080

I have setup Istio's "ingress gateway" to listen on 8080, and have issues with running the Knative hello-world. Has anyone setup Knative like this?

I would like internet traffic coming in to port 8080 to show the output of the Knative hello world.

Solution

If you have an existing container which listens on port 80 instead of $PORT, you can set spec.template.spec.containers[0].ports[0].containerPort to indicate which port the container listens on.

For example:

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
 name: helloworld-go
 namespace: default
spec:
 template:
  spec:
   containers:
    - image: gcr.io/knative-samples/helloworld-go
      env:
      - name: TARGET
       value: "Go Sample v1"
      ports:
      - containerPort: 80

Knative will automatically set the $PORT environment variable to the requested container port, so setting containerPort should work with any of the Knative samples.