How to remove dependency tracking?

[Markz878]

We have an ASP.Net Core 9 web application that uses the OTEL packages to export traces to Azure Monitor/Application Insights.
We only need to import the web api logs, we don't need any dependency tracking or metrics.

Here is the setup code:

builder.Logging.AddOpenTelemetry().AddFilter<OpenTelemetryLoggerProvider>("*", LogLevel.Warning);

builder.Services.AddOpenTelemetry()
.WithTracing(tracing =>
{
     tracing.AddAspNetCoreInstrumentation(x =>x.EnableAspNetCoreSignalRSupport = false);
});

builder.Services.AddOpenTelemetry()
.UseAzureMonitor(x => x.Credential = new ManagedIdentityCredential(builder.Configuration["ManagedIdentityId"]));

builder.Services.Configure<HttpClientTraceInstrumentationOptions>(options =>
{
     options.FilterHttpRequestMessage = (httpRequestMessage) =>
     {
           return false;
     };
});

The last part of the code removes that dependency tracking from the Cosmos Db SDK.
But we still get these ManagedIdentityCredential.GetToken dependecy calls from services that use Managed Identity (CosmosDb and/or Azure Monitor).

Any idea how these could be removed?

In the "old" Application Insights SDK we could just set the EnableDependencyTrackingTelemetryModule to false.
I wish there was something as easy for the OTEL based SDK too.

[cijothomas]

This is best asked in AzureMonitor repo. When using the packages from this repo, nothing is enabled by default - i.e one has to opt-in to collect dependencies (eg: AddHttpClientInstrumentation()) - so the easiest way to disable it is to not add it at all. (Or the filter approach, if you want finer control). When using useAzureMonitor(), it might be overriding something, which is why its best to report this in AzureMonitor repo.

[Markz878]

@cijothomas Could you tell me what is the name/link of this AzureMonitor repo?

[cijothomas]

This is the official support doc:
https://learn.microsoft.com/en-us/azure/azure-monitor/app/opentelemetry-help-support-feedback?tabs=aspnetcore#support

https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter This is the repo where you may open issues, but the official process is from above link.

Hope that helps!

[Markz878]

Thanks a lot!