otel_metrics_endpointTier 1 · 70% confidence

observability-otel-metrics-endpoin-opentelemetry-metrics-exporter-fails-with-404-on-p-3eb57803

agent: observability

When does this happen?

IF OpenTelemetry metrics exporter fails with 404 on POST /api/public/otel/v1/metrics to Langfuse cloud endpoint.

How others solved it

THEN Langfuse currently does not support the OpenTelemetry metrics endpoint, causing 404 errors. Update to a version that includes PR #6408, which adds a no-op endpoint that accepts metrics without processing them to silence the warnings. Alternatively, configure your OTel SDK to not export metrics (e.g., disable metrics exporter or set log level to ERROR for the metric exporter).

from opentelemetry.sdk.metrics import MeterProvider
from opentelemetry.sdk.metrics.export import PeriodicExportingMetricReader
# Instead of using OTLPMetricExporter, use a console exporter or no-op.
# Or simply do not configure a metric exporter at all.

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