Core app logging requests but not traces to app insights

Question

I noticed that my .net core app is logging requests, but not traces to my azure app insights.

I'm setting up app insights in my Startup.cs

services.AddApplicationInsightsTelemetry(options =>
            {
                options.InstrumentationKey = Configuration["ApplicationInsightsInstrumentationKey"];
            });

I'm injecting ILogger in my controller like such

private readonly ILogger<HealthCheckController> _logger;

public HealthCheckController(ILogger<HealthCheckController> logger)
{
    _logger = logger;
}

[HttpGet]
public IActionResult HealthCheck()
{
    // Custom EventId for logging
    var eventId = EventDefinition.TestMicroservice.HealthCheckController.HealthCheck;

    _logger.LogInformation(eventId, "Test Microservice health check successful.");

    return Ok("Test Microservice is running!");
}

Am I missing something? I've hit my controller multiple times and I'm seeing requests getting logged, but my custom log messages are nowhere to be found under traces.

Answer 1

By default, only Warning or higher is collected by ApplicationInsights. You can change it following the doc here: https://docs.microsoft.com/en-us/azure/azure-monitor/app/asp-net-core#how-do-i-customize-ilogger-logs-collection