Distributed tracing on data plane

[alexsnaps]

As request come into the cluster, it'd be nice to enable distributed traces from the Gateway onward, throughout the different Kuadrant components and eventually to the user's application fronted by Kuadrant.

• Look into what it would take to start trace, and propagate to our services, from Envoy/Istio/OSSM/Sail kuadrant-operator#399
• Support for --tracing-service-insecure authorino-operator#167
• Verify the gRPC calls from the wasm-shim do propagate the traceid wasm-shim#47
• Propagate parenttrace id manually wasm-shim#48
• Add support to push traces to collector limitador#86
• Retrieve opentelemetry parent span from headers limitador#275
• Add limitador tracing-endpoint command limitador-operator#130
• Add some global way (in the Kuadrant CR?) to configure the underlying components for them to push spans to the OTLP collector. Moved to Add some global way (in the Kuadrant CR?) to configure the underlying components for them to push spans to the OTLP collector kuadrant-operator#731
• Have us (within wasm, e.g. pre auth RL?) start the trace and is there a way to have envoy propagate that traceparent to ext`-auth? Moved to Have us (within wasm, e.g. pre auth RL?) start the trace and is there a way to have envoy propagate that traceparent to ext-auth? wasm-shim#59
• Look into adding "well-known" fields into our span to "trace" them back to the user's domain: RLP, AP, … Moved to RFC: Tracing Sampling Strategy Rules #96

[david-martin]

@alexsnaps @adam-cattermole for the sake of gh issue hygiene, and assuming at this time there are no issues in this epic progressing, how about closing this out with the tasks that were completed & marking this as Done?
The remaining tasks could be moved to a new epic and prioritised accordingly.

[adam-cattermole]

Sure, I think that makes sense - breaking out the pieces / decisions around how we expose tracing at the kuadrant level

[david-martin]

Closing as done with follow up work captured in:

• Add some global way (in the Kuadrant CR?) to configure the underlying components for them to push spans to the OTLP collector kuadrant-operator#731
• Have us (within wasm, e.g. pre auth RL?) start the trace and is there a way to have envoy propagate that traceparent to ext-auth? wasm-shim#59
• RFC: Tracing Sampling Strategy Rules #96