[%% Kernel/logger
 {kernel, [{logger,[{handler,default,logger_std_h,#{}}]}
          %%,{logger_level,debug}
          ]},
   {opentelemetry,
  [{processors, 
    [{otel_batch_processor,
        #{exporter => {opentelemetry_exporter, #{protocol => http,
                                                 endpoints => ["http://localhost:4317"],
                                                 headers => [{"x-honeycomb-dataset", "experiments"}]}}}}]}]}
].

Running Project with rebar3

1. Application will running on Port :8083
2. run Nginx at port :4317 to mock OTLP Collector
3. When Visit GET / Endpoint should sent Opentelemetry to Configured Endpoint
4. [Alternative Debugging] run docker-compose up then you should have real OTLP collector running at port gRPC:4317 too (I had already tried but it didn't work)

Erlang Application should sent Traces with :POST method to Nginx but currently it didn't work for both GRPC and HTTP

This command will give you successful connect with Open Telemetry

rebar3 shell

docker run -p 4317:80 docker.io/nginx