Hi, Istio Community!
Now I am playing with Istio (1.0.5) distributed tracing and have working default configuration – Envoy generates trace spans and sends it to Jaeger collector.
Services communicates over gRPC and messages contains custom headers. I want to get some of this headers in Jaeger as span tags. Is it possible to configure span tag list generated by Envoy?
If not, how can I switch to mixer-generated spans? And how to configure mixer-generated spans tags for default Jaeger-collector?