I am trying to understand the data flow relating to metrics in istio telemetry. Please provide links that I should go through to get a deeper understanding.
Which are the istio pods, among mixer, side-car-injection, side-car (istio-proxy) and pilot, requiring the various resource definitions - like metric, handler, rules?
In the metrics.yaml, the metric params use a text connection.sent.bytes. Where is this defined? Does the side-car expose all the metrics out for someone like mixer to scrape it out?