In this video: https://youtu.be/BnjHArsYGLM?si=hzogiatb4-323S&t=463@SamSpencer and @NoaFolk talk about OpenTelemetry and .NET8.
Around 7:43 Noa talks about the standalone Aspire dashboard and how you can use it without the need for a full Aspire projects setup.
Sadly they didn't share a working repo.
I've created a new Blazor WebApp using the new template for .NET 8 (the template creates two projects, a ServerSide and ClientSide one) and I added OpenTelemetry. I use the ConsoleExporter and I can see it is logging like I want. I even added a few metrics.
But I can't get the Dashboard to work. Does anybody else get this working?
This is my Program.cs, in my ServerSide project:
var builder = WebApplication.CreateBuilder(args);builder.Services.AddSingleton<CustomMeters>();builder.Services.AddOpenTelemetry() .WithMetrics(metrics => metrics .AddMeter("Microsoft.AspNetCore.Hosting") .AddMeter("Microsoft.AspNetCore.Server.Kestrel") .AddMeter("Microsoft.AspNetCore.Http.Connections") .AddMeter("System.NET.Http") .AddHttpClientInstrumentation() .AddAspNetCoreInstrumentation() .AddOtlpExporter()) // <== This should create the dashboard .WithTracing(tracing => tracing .SetSampler(new AlwaysOnSampler()) .AddHttpClientInstrumentation() .AddAspNetCoreInstrumentation() );// Clear default logging providers used by WebApplication host.builder.Logging.ClearProviders();builder.Logging.AddOpenTelemetry(options =>{ options.AddConsoleExporter(); options.AddOtlpExporter(otlpOptions => otlpOptions.Endpoint = new Uri(builder.Configuration.GetValue("Otlp:Endpoint", defaultValue: "http://localhost:4317")!));});// Add services to the container.builder.Services.AddRazorComponents() .AddInteractiveServerComponents() .AddInteractiveWebAssemblyComponents();var app = builder.Build();[..]