If you are new to distributed tracing, please check the Introduction page.

Instrumentation

Your applications must be instrumented before they can send tracing data to Jaeger. We recommend using the OpenTelemetry  instrumentation and SDKs.

Historically, the Jaeger project supported its own SDKs (aka tracers, client libraries) that implemented the OpenTracing API. The Client Libraries section provides information about how to use the OpenTracing API and how to initialize and configure Jaeger tracers. As of 2022, the Jaeger SDKs are no longer supported, and all users are advised to migrate to OpenTelemetry.

All in One

All-in-one is an executable designed for quick local testing, launches the Jaeger UI, collector, query, and agent, with an in memory storage component.

The simplest way to start the all-in-one is to use the pre-built image published to DockerHub (a single command line).

docker run -d --name jaeger \
  -e COLLECTOR_ZIPKIN_HOST_PORT=:9411 \
  -e COLLECTOR_OTLP_ENABLED=true \
  -p 6831:6831/udp \
  -p 6832:6832/udp \
  -p 5778:5778 \
  -p 16686:16686 \
  -p 4317:4317 \
  -p 4318:4318 \
  -p 14250:14250 \
  -p 14268:14268 \
  -p 14269:14269 \
  -p 9411:9411 \
  jaegertracing/all-in-one:1.38.0

Or run the jaeger-all-in-one(.exe) executable from the binary distribution archives:

jaeger-all-in-one --collector.zipkin.host-port=:9411

You can then navigate to http://localhost:16686 to access the Jaeger UI.

The container exposes the following ports:

With Service Performance Monitoring (SPM)

Please refer to Service Performance Monitoring (SPM).

Kubernetes and OpenShift

• Kubernetes templates: https://github.com/jaegertracing/jaeger-kubernetes 
• Kubernetes Operator: https://github.com/jaegertracing/jaeger-operator 
• OpenShift templates: https://github.com/jaegertracing/jaeger-openshift 

Sample App: HotROD

HotROD (Rides on Demand) is a demo application that consists of several microservices and illustrates the use of the OpenTracing API . A tutorial / walkthrough is available in the blog post: Take OpenTracing for a HotROD ride .

It can be run standalone, but requires Jaeger backend to view the traces.

Features

• Discover architecture of the whole system via data-driven dependency diagram.

• View request timeline and errors; understand how the app works.

• Find sources of latency and lack of concurrency.

• Highly contextualized logging.

• Use baggage propagation to:

  • Diagnose inter-request contention (queueing).
  • Attribute time spent in a service.

• Use open source libraries with OpenTracing integration to get vendor-neutral instrumentation for free.

Prerequisites

• You need Go toolchain  installed on your machine to run from source (see go.mod  file for required Go version).
• Requires a running Jaeger backend to view the traces.

Running

From Source

mkdir -p $GOPATH/src/github.com/jaegertracing
cd $GOPATH/src/github.com/jaegertracing
git clone git@github.com:jaegertracing/jaeger.git jaeger
cd jaeger
go run ./examples/hotrod/main.go all

From docker

docker run --rm -it \
  --link jaeger \
  -p8080-8083:8080-8083 \
  -e JAEGER_AGENT_HOST="jaeger" \
  jaegertracing/example-hotrod:1.38.0 \
  all

From binary distribution

Run example-hotrod(.exe) executable from the binary distribution archives:

example-hotrod all

Then navigate to http://localhost:8080.

Migrating from Zipkin

Collector service exposes Zipkin compatible REST API /api/v1/spans which accepts both Thrift and JSON. Also there is /api/v2/spans for JSON and Proto. By default it’s disabled. It can be enabled with --collector.zipkin.host-port=:9411.

Zipkin Thrift  IDL and Zipkin Proto  IDL files can be found in jaegertracing/jaeger-idl  repository. They’re compatible with openzipkin/zipkin-api  Thrift  and Proto .