Istio cannot get trace of "mysql out of istio"

1

problem

My istio version is 1.2, and we use jeager + zipkin get all trace of our app, In the app, we will connect external mysql. But the jeager cannot display all message.

env

istio: 1.2
jeager Probability: 100

pic

image
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2

I believe you are asking why you are not seeing traces for the calls to mysql. Is that correct?

If so, the reason is that tracing is only supported for HTTP at the moment.