App Insights Set Cloud Role Name - Multiple Microservices off one App Insights (one workspace too)

app-insights-microservices-program.cs

// 0. Create Application insights (workspace version - You could set up a 'log analytics workspace' first)
// 1. In web app, Nuget -> Microsoft.ApplicationInsights.AspNetCore
// 2. Config (can either pass in app insights key, or use whole connection string in config)
// 3. (if using connectionstring, appsettings.json looks like)

//"ApplicationInsights": {
//    "ConnectionString": "InstrumentationKey=...;IngestionEndpoint=https://...-0.in.applicati...ights.azure.com/;LiveEndpoint=https://........livediagnostics.monitor.azure.com/"
//  },


// In another file
public class RoleNameInitialiser : ITelemetryInitializer
{
    public void Initialize(ITelemetry telemetry)
    {
        telemetry.Context.Cloud.RoleName = "ThisMicroserviceName";
    }
}

// In program.cs
builder.Services.AddSingleton<ITelemetryInitializer, RoleNameInitialiser>();
builder.Services.AddApplicationInsightsTelemetry();
//builder.Services.AddApplicationInsightsTelemetry(myAppInsightsKey);