Insights logs show in Azure Live metrics but not in Transaction search

[lasyan3]

Hi,

I have an Azure Function migrated to NET 8 isolated model and I have trouble to have my logs displayed in Azure Insights Transaction Search.

Here is the Program.cs:

var host = new HostBuilder()
    .ConfigureFunctionsWebApplication()
    .ConfigureServices(services => {
        services.AddApplicationInsightsTelemetryWorkerService(options =>
        {
            // Désactiver les logs DEPENDENCY dans le worker (sauf les "Invoke")
            options.EnableDependencyTrackingTelemetryModule = false;
        });
        services.ConfigureFunctionsApplicationInsights();
        services.AddHttpClient(); // for IHttpClientFactory
    })
      .ConfigureLogging(logging =>
      {
          logging.SetMinimumLevel(LogLevel.Information);
      })
    .Build();

host.Run();

And host.json:

{
  "version": "2.0",
  "logging": {
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": false,
        "excludedTypes": "Request"
      },
      "enableDependencyTracking": false,
      "enableLiveMetricsFilters": true
    },
    "logLevel": {
      "default": "Error",
      "Function": "Error",
      "Function.Update.User": "Information",
    }
  }
}

When I run a function from my computer, the console shows only the logs I want:

Also the Live metrics:

But the Transaction Search is missing those logs, instead I get those weird "Invoke" lines:

Any clue?

[lasyan3]

Ok I found the issue, following this comment.

But important note: when one adds the Configure block, settings from host.json are ignored.
Also note that adding a default filter does not work either, at least you can add :
options.AddFilter("Microsoft", LogLevel.Error);

[lasyan3]

Another update: after adding support for settings.json files following this comment, Logging entries are recognized and "Default" works again.