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Route Dagger build telemetry to Tempo

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The Dagger engine's internal OTLP proxy returns 500 on /v1/metrics when
there's no real backend, causing ~9s retry warnings per pipeline step.
Point OTEL_EXPORTER_OTLP_ENDPOINT at Tempo to give it a real endpoint.
Also removes the stale os.environ workaround from main.py (the SDK
initializes telemetry before our module loads, so it had no effect).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erich Blume 2026-04-13 08:27:12 -07:00
commit b5551e227e
3 changed files with 6 additions and 9 deletions
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docs/changelog.d/+dagger-otel-metrics-fix.bugfix.md
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Fix OTEL metrics exporter warnings in Dagger builds by hard-overriding the env var before SDK init.
Route Dagger build telemetry to Tempo, fixing OTEL metrics exporter warnings.