OTEL jaeger exporter doesn't export data with strange error

Question

Instrumentation OTEL for golang while trying to send traces to jaeger returns error

{"level":"error","ts":1700656827.118944,"logger":"otel","caller":"metric/metrics.go:112","msg":"Error","service.name":"service","error":"traces export: Post \"http://localhost:4318/v1/traces\": EOF","stacktrace":"kit/server/metric.zapErrorHandler.Handle\n\t/Users/j.doe/GolandProjects/service/server/metric/metrics.go:112\ngo.opentelemetry.io/otel/internal/global.(*ErrDelegator).Handle\n\t/Users/j.doe/GolandProjects/service/vendor/go.opentelemetry.io/otel/internal/global/handler.go:48\ngo.opentelemetry.io/otel/internal/global.Handle\n\t/Users/j.doe/GolandProjects/service/vendor/go.opentelemetry.io/otel/internal/global/handler.go:101\ngo.opentelemetry.io/otel.Handle\n\t/Users/j.doe/GolandProjects/service/vendor/go.opentelemetry.io/otel/handler.go:48\ngo.opentelemetry.io/otel/sdk/trace.(*batchSpanProcessor).processQueue\n\t/Users/j.doe/GolandProjects/service/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go:317\ngo.opentelemetry.io/otel/sdk/trace.NewBatchSpanProcessor.func1\n\t/Users/j.doe/GolandProjects/service/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go:128"}

What's wrong? Jaeger v1.6 works in docker container at localhost:4318

Answer 1

The truth was so far... On jaeger wasn't activated otlp handler on 4318 port to do this, set COLLECTOR_OTLP_ENABLED=true for jaeger, and full example:

docker run -d --name jaeger \
   -e COLLECTOR_ZIPKIN_HOST_PORT=:9411 \
   -e COLLECTOR_OTLP_ENABLED=true \
   -p 6831:6831/udp \
   -p 6832:6832/udp \
   -p 5778:5778 \
   -p 16686:16686 \
   -p 4317:4317 \
   -p 4318:4318 \
   -p 14250:14250 \
   -p 14268:14268 \
   -p 14269:14269 \
   -p 9411:9411 \
   jaegertracing/all-in-one:latest