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ASP.NET Core observability w/ Grafana OSS Stack

Sample application showing how to write up ASP.NET Core with OpenTelemetry and export to Prometheus, Loki, and Tempo using the OpenTelemetry Collector

Prerequisites

Setup

The demo is made up of a few projects written in C#.

  • Web API - Backend HTTP Weather API built with ASP.NET Core
  • Website - Front facing UI using the default Blazor Server template

Configured Ports 🔌

Application Port(s)
Web API 5006
Website 5238
Loki 3100
Prometheus UI 9090
Grafana UI 3000
OpenTelemetry Collector 4317, 4318

Running the demo 🚀

Run the infrastructure components with the provided docker-compose.yml file.

>  docker compose -p grafana-demo up

👀 This setup will create a ./tmp/ folder in the root of the project folder that will be mounted as a volume in the infrastructure containers.

Start both .NET applications

Backend Web API

> cd src/BackendApiService
> dotnet run

Front facing web API

> cd src/MainService
> dotnet run