ASP.NET MVC logs appear in live metrics but not in performance tab

Question

I have ASP.NET MVC webapp setup (.net core 2.2), and configured to use Application Insights.

I have included the following nuget packages:

- Microsoft.ApplicationInsights.AspNetCore 2.14.0

- Microsoft.Extensions.Logging.ApplicationInsights 2.14.0

 

In Startup.cs, I have configured the following:

```

public void ConfigureServices(IServiceCollection services)

{

      // etc

      services.AddApplicationInsightsTelemetry(instrumentationKey);

}

```

I have configured the application insights instrumentation key in the appsettings as follows:

```

  "ApplicationInsights": {

    "InstrumentationKey": "<my-instrumentation-key>"

  }

```

When a request is made to the webapp, it appears in the live metrics stream.

However, when trying to dive into the logs via the Peformance tab, I cannot see them appear. In other web apps that I have made in the past, I can now drill into the logs, API requests and all their details. Here, I cannot see them for some reason.

Any guidance on what I might be missing in order for the logs to appear here? I need to be able to look a the details of the API requests, their full request URI, and possible stack traces in case a request raises an error. 

 

Thanks you,

 

Pieter

PS: I cannot upload images since my account is not verified yet

Answer 1

The most common reason you would see data in live metrics but not in any of the other tabs with a freshly created app is ingestion delay. While live metrics show up immediately, the rest of the data takes around 5 minutes to fully ingest into the system and become queryable.

If sufficient time has passed and you still can't see any data, then I would suggest going through our FAQ on the subject: https://docs.microsoft.com/en-us/azure/azure-monitor/app/asp-net-troubleshoot-no-data

In particular, enabling troubleshooting logs may give some insight into the cause of your issues.