Vert.x and kubernetes go hand in and hand. If I am using istio as a service mesh will Zipkin's request tracing be able to track communication done via the event bus?
client ->[rest/http1]-> service-A ->[eventbus]-> service-B
Will istio be able to trace requests done over the eventbus?
The tracing page says that headers need to be propagated through in http or grpc - but the eventbus sends messages via tcp -- does that mean that istio will not be able to trace requests and show the visualisation tools [waterfall graph and visualisation of all the services]
tracing in your example would work only for requests made to service-A via HTTP protocol. Istio at the moment traces only HTTP requests.
You can trace event bus messages manually by creating spans inside message producers and receivers. IIRC vert.x event bus does not support headers per message:
https://vertx.io/docs/apidocs/io/vertx/core/eventbus/MessageProducer.html https://vertx.io/docs/apidocs/io/vertx/core/eventbus/DeliveryOptions.html
so you would have to encode tracing IDs into the message body and deserialize it correctly on the receiver side.