----- Original Message -----
Thank you but it does not help me.
> I want to see the "istio-ingressgateway" in my graph on the "default"
> namespace in Kiali.
> If I switch to namespace "istio-system" in Kiali, I get the object
> "istio-ingressgateway" as source of my traffic.
> So I want to see the same but for the "default" namespace ( and having the
> istio-ingress installed in "istio-system" namespace ).
What happens if you select to view the "istio-system" namespace AND the "default" namespace in the Kiali namespace drop down menu? I suspect you will still see that "unknown" node.
Keep in mind the Kiali graph is merely visualizing the underlying telemetry that Istio stores in Prometheus. So the "unknown" traffic might actually just be what is in telemetry and Kiali is simply showing it. So, I would also look at this FAQ "How do I inspect the underlying metrics used to generate the Kiali Graph?" and see if it helps: https://kiali.io/documentation/latest/faq/#prometheus
If you are seeing "unknown" telemetry in Prometheus itself, then this is not a Kiali misconfiguration, it is simply the way your Istio mesh is configured and working. In that case, it might be worth while to ask this on the Istio Slack or mailing list to see if anyone would know in the core Istio community. See: https://istio.io/latest/about/community/join/