Jaeger

Jaeger is an open-source, end-to-end distributed tracing platform for monitoring and troubleshooting transactions in complex distributed systems. Originally built and open-sourced by Uber Technologies in 2017, Jaeger was donated to the Cloud Native Computing Foundation, became an incubating project in 2017, and graduated in 2019. Jaeger v2, released in November 2024, is a customized distribution of the OpenTelemetry Collector and is the OTLP-native generation of the platform. It exposes three primary APIs — the Query API (read), the Collector API (span ingest), and the Sampling Manager API (remote sampling configuration) — across HTTP and gRPC, supports six pluggable storage backends, and ships with a Kubernetes Operator, Helm charts, a React UI, and a Grafana plugin.

3 APIs 14 Features

ObservabilityDistributed TracingAPMOpenTelemetryCNCFCloud NativeMicroservicesOpen Source

APIs

Jaeger Query API

The Jaeger Query API (api_v3) exposes services, operations, trace search, single-trace lookup, and inter-service dependency graphs over HTTP (port 16686) and gRPC (port 16685). ...

Jaeger Collector API

The Jaeger Collector ingests spans over multiple protocols — native Jaeger api_v2 (gRPC 14250, HTTP 14268), OTLP (gRPC 4317, HTTP 4318), and Zipkin (HTTP 9411) — and writes them...

Jaeger Sampling Manager API

Remote sampling configuration API. Tracer SDKs poll the Sampling Manager (HTTP port 5778, gRPC port 5779) to retrieve the active per-service sampling strategy — probabilistic, r...

Collections

Jaeger Collector API (api_v2)

OPEN

Jaeger Query API (v3)

OPEN

Jaeger Sampling Manager API (api_v2)

OPEN

Features

Distributed tracing platform — CNCF graduated project, originated at Uber, now community maintained

Jaeger v2 is built on the OpenTelemetry Collector — first-class OTLP support on ports 4317/gRPC and 4318/HTTP

Native Jaeger api_v2 ingest over gRPC (14250) and HTTP (14268) for legacy SDKs

Zipkin v1/v2 compatibility on port 9411 for migration from Zipkin

Query API v3 exposes services, operations, trace search, single-trace lookup, and dependency graphs over HTTP (16686) and gRPC (16685)

Remote sampling — probabilistic, rate-limiting, per-operation, and adaptive strategies served via SamplingManager on port 5778/5779

Pluggable storage — Cassandra, OpenSearch, Elasticsearch, ClickHouse, Kafka (buffered), Badger (embedded)

Service Performance Monitoring (SPM) view — RED metrics derived from spans

Service dependency graph computed offline via the spark-dependencies job

Kubernetes-native deployment via the Jaeger Operator and official Helm charts

All-in-one binary for local development with in-memory storage

React UI bundled in the Query service plus a Grafana datasource plugin and VS Code extension

SDKs deprecated in favor of OpenTelemetry SDKs (Go, Python, Java, JS, .NET, C++, Ruby, PHP)

Apache 2.0 licensed; governance via GOVERNANCE.md and MAINTAINERS.md

Semantic Vocabularies

Jaeger Io Context

27 classes · 0 properties

JSON-LD

Resources

Documentation

Documentation

Documentation

Documentation

Documentation

GettingStarted

GitHubOrganization

GitHubOrganization

ContainerImage

Maintainers

SecurityPolicy

ThreatModel

ContributingGuide

ContributingGuide

ReleaseNotes

Organization

Documentation

Documentation

Sources

opencollection: 1.0.0
info:
  name: Jaeger Sampling Manager API (api_v2)
  version: '2.0'
items:
- info:
    name: SamplingManager
    type: folder
  items:
  - info:
      name: Get Sampling Strategy
      type: http
    http:
      method: POST
      url: http://localhost:5778/api/v2/samplingStrategy
      body:
        type: json
        data: '{}'
    docs: 'Retrieve the sampling strategy for the named service. The gRPC equivalent

      is `jaeger.api_v2.SamplingManager/GetSamplingStrategy`.'
  - info:
      name: Get Sampling Strategy (Legacy)
      type: http
    http:
      method: GET
      url: http://localhost:5778/sampling
      params:
      - name: service
        value: ''
        type: query
        description: Service name to look up.
    docs: 'Legacy HTTP form used by older Jaeger SDKs. The Collector / agent

      returns the same SamplingStrategyResponse JSON; service name is given

      via the `service` query parameter.'
bundled: true