Istio-ingressgateway istio-proxy container Prober does not exists

Hello,

K8s: 1.14.5
Istio: 1.2.0

With log level at “info” I see the following output in the istio-proxy sidecar container that’s in the istio-ingressgateway pod:

2019-09-07T00:00:26.095551Z     error   Prober does not exists url /
2019-09-07T00:00:26.141742Z     error   Prober does not exists url /
2019-09-07T00:00:26.217332Z     error   Prober does not exists url /
2019-09-07T00:00:26.429514Z     error   Prober does not exists url /
2019-09-07T00:00:26.474193Z     error   Prober does not exists url /
2019-09-07T00:00:26.711961Z     error   Prober does not exists url /
2019-09-07T00:00:26.781169Z     error   Prober does not exists url /
2019-09-07T00:00:26.827585Z     error   Prober does not exists url /
2019-09-07T00:00:26.879555Z     error   Prober does not exists url /
2019-09-07T00:00:27.041604Z     error   Prober does not exists url /
2019-09-07T00:00:27.367586Z     error   Prober does not exists url /
2019-09-07T00:00:27.432036Z     error   Prober does not exists url /
2019-09-07T00:00:27.523326Z     error   Prober does not exists url /
2019-09-07T00:00:27.652229Z     error   Prober does not exists url /
2019-09-07T00:00:27.880209Z     error   Prober does not exists url /
2019-09-07T00:00:27.892208Z     error   Prober does not exists url /
2019-09-07T00:00:28.008248Z     error   Prober does not exists url /

I got the above output via:

$ k -n istio-system logs -f istio-ingressgateway-5b77dd5989-qhgs7 -c istio-proxy

To set the log level I did:

$ k -n istio-system exec -it istio-ingressgateway-5b77dd5989-qhgs7 -c istio-proxy -- curl -XPOST http://localhost:15000/logging?level=info

As you can see this is being printed out several times per second. This makes it really hard to debug network issues or any other issue that might require viewing these logs. I tried to restart the pod but this output doesn’t go away.