Incorrect container id reported

[joegoldman2]

Issue with OpenTelemetry.ResourceDetectors.Container

List of all OpenTelemetry NuGet packages and version that you are using (e.g. OpenTelemetry 1.3.2):

• OpenTelemetry.Exporter.OpenTelemetryProtocol 1.7.0
• OpenTelemetry.Extensions.Hosting 1.7.0
• OpenTelemetry.Instrumentation.AspNetCore 1.7.0
• OpenTelemetry.ResourceDetectors.Container 1.0.0-beta.5

Is this a feature request or a bug?

• Feature Request
• Bug

What is the expected behavior?

The correct container id is reported in the Resource attributes.

What is the actual behavior?

The container id doesn't seem to be correct.

Otel Collector with debug exporter:

2024-02-02T09:32:08.834Z        info    ResourceSpans #0
Resource SchemaURL:
Resource attributes:
     -> container.id: Str(b7f67556f672a21eef1344ce6670797fe54e1f49bcd4fdaf8a746d2cd24acf6e)

But the output of kubectl describe pods is not reporting the same value:

> kubectl describe pods -n api
Name:             basket-api-765214ace9-6frsx
....
Containers:
  basket-api:
    Container ID:   containerd://b6e87264844654c35996d2e67b1bd7904b1620310bce307bddd92bd724124361
// rest of the output omitted for brevity

Additional Context

The application is using .NET 8 and is running on AKS.

[Kielek]

@iskiselev, FYI

[iskiselev]

There is work in progress on workaround for the issue: #1529. It would require some tweaks form the user: allow container to fetch some metadata information from K8 API (so, give some additional rights to pod) and pass container name into pod through environment variable (can be easily done in pod description yaml).