In Jaeger I get "unknown_service:dotnet" and "Duplicate tag "peer.service:"

List of NuGet packages and version that you are using: “OpenTelemetry.Exporter.Console” Version=“1.1.0-beta1” /> “OpenTelemetry.Exporter.Jaeger” Version=“1.0.1” /> “OpenTelemetry.Exporter.Zipkin” Version=“1.0.1” /> “OpenTelemetry.Extensions.Hosting” Version=“1.0.0-rc4” /> “OpenTelemetry.Instrumentation.AspNetCore” Version=“1.0.0-rc4” /> “OpenTelemetry.Instrumentation.Http” Version=“1.0.0-rc4” /> “OpenTelemetry.Instrumentation.SqlClient” Version=“1.0.0-rc4” />

Runtime version netcoreapp2.2

Question

In Jaeger I get “unknown_service:dotnet” and "Duplicate tag “peer.service:”

Describe your environment.

Startup.cs:

services.AddOpenTelemetryTracing((builder) => builder
    .AddAspNetCoreInstrumentation()
    .AddHttpClientInstrumentation()
    .AddSqlClientInstrumentation()
    .AddZipkinExporter(options =>
    {
        options.Endpoint = new Uri("http://zipkin.istio-system:9411/api/v2/spans");
    })
    );

Run application under kubernetes 1.18, jaegertracing/all-in-one:1.20, istio 1.9.2.

What are you trying to achieve?

What did you expect to see?

I’de like to have name situated in “peer.service” instead of unknown_service:dotnet, on my screen it should be “content”.

Additional Context

Problem is similar to described here: #2584 span.kind & peer.service

I still do not have any idea how to fix it. Could you help me, please.

[ElectricVampire]

@luizhlelis it works with JaegerExporter but jaegerExporter has limitation that it doesn’t support Http or grpc(https://github.com/open-telemetry/opentelemetry-dotnet/issues/2054) hence using ZipkinExporter which does support Http.

Jaeger has a port open for Zipkin traces as well (https://www.jaegertracing.io/docs/1.17/features/#backwards-compatibility-with-zipkin), hence we can still use ZipkinExporter for JaegerUI, so I would not say this as invalid configuration.

[robrich]

To set the name from unknown_service to something descriptive:

public void ConfigureServices(IServiceCollection services)
{
    // ... snip ...
    services.AddOpenTelemetryTracing((builder) => {
        builder
            .SetResourceBuilder(ResourceBuilder
                .CreateDefault()
                .AddService(env.ApplicationName)) // <-- sets service name
            .AddAspNetCoreInstrumentation();
            // .AddMoreThings :D
    // ... snip ...
}