aspnetcore/sample/ApplicationInsightsHostingStartupSample/home/site/diagnostics/ApplicationInsights.settings.json

{
  "Logging": {
    "Microsoft.ApplicationInsights.AspNetCore.Logging.ApplicationInsightsLoggerProvider": {
      "LogLevel": {
        "Microsoft": "Information",
        "Specific": "Trace",
        "Application": "Trace"
      }
    }
  }
}