I'm getting warnings for grpc endpoint even though it works and grpc accepts the message: Failed to export TraceRequestMarshalers. Perhaps the collector does not support collecting traces using grpc? Try configuring 'quarkus.otel.exporter.otlp.traces.protocol=http/protobuf', but logs the this warning in the app (keycloak) any ideas?

If gRPC is working and traces are reaching OpenObserve, this is likely a Keycloak/Quarkus warning rather than an ingestion issue. I’d check: • Keycloak is using 4317 (gRPC), not 4318. • No proxy/Ingress is breaking HTTP/2. • Explicitly set

KC_TRACING_PROTOCOL=grpc

and the correct OTLP endpoint. If traces are arriving successfully, the warning may be safe to ignore.

Yes, indeed it's keycloak warning, humm, so default grpc ports are 4318, 4318, I didn't explicitly set the port, I have 2 reverse proxies in-front, which is probably the case, but they behave standard I will definitely check this I'm proxying through cloudflare tunnel and then nginx grpc proxy, I'll talk to keycloak about this