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cmd/geth: wire OpenTelemetry tracing via CLI flags #33484

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cmd/geth: wire OpenTelemetry tracing via CLI flags #33484

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@jrhea jrhea commented Dec 23, 2025 •
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Summary

This PR adds optional OpenTelemetry tracing configuration to geth via command-line flags. When enabled, geth initializes a global OpenTelemetry TracerProvider and installs standard trace context propagation. When disabled (the default), tracing remains a no-op and behavior is unchanged.

Note: This PR only configures the global OpenTelemetry provider and exporters. It does not add any instrumentation by itself. Instrumentation added elsewhere (e.g. JSON-RPC tracing in PR #33452) will automatically begin exporting spans when combined with this PR.
fjl
fjl reviewed Dec 23, 2025
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