Sean Killeen 2/3/2025

[Field Notes] Troubleshooting .NET OpenTelemetry SDK: Why Can’t I see My App’s Metrics?

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The article details a developer's experience debugging why a .NET application's OpenTelemetry metrics weren't reaching the Collector. It covers enabling SDK self-diagnostics, identifying a gRPC connection error due to a breaking change in the OTel Collector (v0.104.0+), and the solution of binding to all network interfaces in a local dev environment.

[Field Notes] Troubleshooting .NET OpenTelemetry SDK: Why Can’t I see My App’s Metrics?

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