I am wondering what command I should use to grab the http response for the pod failure readiness check.

This is how I debug and being blocked by only get http status but not knowing the exact error response.

kubectl get pods/app

app                   1/1       Running            3          18h

It seems there are lots of restart happening on the pod and then I guess I need to use describe to see what triggers the restart.

kubectl describe pod app

Warning Unhealthy Readiness probe failed: HTTP probe failed with statuscode: 503

There are several reasons can lead to 503. I would like to get http response for that and I cant find any argument to include that.

Here is the readiness probe definition:

readinessProbe:
       httpGet:
           path: /diagnostic/ready
           port: liveness-port
       initialDelaySeconds: 10
       timeoutSeconds: 3
       failureThreshold: 80
       periodSeconds: 3

Thanks in advance