opentelemetry
OpenTelemetry
OpenTelemetry (OTel) is a vendor-neutral observability framework for generating, collecting, and exporting telemetry data. It defines three signals:
- Traces -- Follow a request across services. Made up of spans (units of work with timing, status, and relationships).
- Metrics -- Numeric measurements aggregated over time: counters, histograms, gauges.
- Logs -- Structured event records, correlated with traces via trace/span IDs.
All three signals share a common context propagation mechanism so they can be correlated.
Node.js Setup
Auto-Instrumentation
npm install @opentelemetry/sdk-node @opentelemetry/auto-instrumentations-node \
@opentelemetry/exporter-trace-otlp-grpc @opentelemetry/exporter-metrics-otlp-grpc
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