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Tune OTel tail sampling for GenAI traces without losing incident evidence

Keep failed, slow, and high-cost traces in OpenTelemetry pipelines while reducing volume and protecting Collector queues.

A practical guide to rolling out OpenTelemetry Collector tail sampling when GenAI and RAG traces grow quickly: policies, canaries, queue metrics, and critical-evidence validation.

Created: June 21, 2026

Published: June 21, 2026

Estimated time45 min

LevelAdvanced

Before you startOpenTelemetry Collector contrib or an equivalent distribution

PlatformsLinux

WhatsApp X LinkedIn

Linux

Validate the config locally, deploy a Collector canary, and compare sampling, queue, and critical-trace metrics.

otelcol-contribcurljqoptional promtool

Validate the Collector configuration

otelcol-contrib validate --config collector-tail-sampling.yaml

Check internal metrics

curl -s http://collector-canary:8888/metrics | egrep 'tail_sampling|exporter_queue|send_failed|dropped'

Also available inAjustar tail sampling de OTel para GenAI sin perder evidencia de incidentes

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