Træfik (pronounced like traffic) is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm mode, Kubernetes, Marathon, Consul, Etcd, Rancher, Amazon ECS, and a lot more) to manage its configuration automatically and dynamically.

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. Overview . Features . Supported backends . Quickstart . Web UI . Test it . Documentation .

. Support . Release cycle . Contributing . Maintainers . Plumbing . Credits .

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Overview

Imagine that you have deployed a bunch of microservices on your infrastructure. You probably used a service registry (like etcd or consul) and/or an orchestrator (swarm, Mesos/Marathon) to manage all these services. If you want your users to access some of your microservices from the Internet, you will have to use a reverse proxy and configure it using virtual hosts or prefix paths:

• domain api.domain.com will point the microservice api in your private network
• path domain.com/web will point the microservice web in your private network
• domain backoffice.domain.com will point the microservices backoffice in your private network, load-balancing between your multiple instances

But a microservices architecture is dynamic... Services are added, removed, killed or upgraded often, eventually several times a day.

Traditional reverse-proxies are not natively dynamic. You can't change their configuration and hot-reload easily.

Here enters Træfik.

Træfik can listen to your service registry/orchestrator API, and knows each time a microservice is added, removed, killed or upgraded, and can generate its configuration automatically. Routes to your services will be created instantly.

Run it and forget it!

Features

• It's fast
• No dependency hell, single binary made with go
• Tiny official docker image
• Rest API
• Hot-reloading of configuration. No need to restart the process
• Circuit breakers, retry
• Round Robin, rebalancer load-balancers
• Metrics (Rest, Prometheus, Datadog, Statsd, InfluxDB)
• Clean AngularJS Web UI
• Websocket, HTTP/2, GRPC ready
• Access Logs (JSON, CLF)
• Let's Encrypt support (Automatic HTTPS with renewal)
• Proxy Protocol support
• High Availability with cluster mode (beta)

Supported backends

• Docker / Swarm mode
• Kubernetes
• Mesos / Marathon
• Rancher (API, Metadata)
• Consul / Etcd / Zookeeper / BoltDB
• Eureka
• Amazon ECS
• Amazon DynamoDB
• File
• Rest API

Quickstart

You can have a quick look at Træfik in this Katacoda tutorial that shows how to load balance requests between multiple Docker containers. If you are looking for a more comprehensive and real use-case example, you can also check Play-With-Docker to see how to load balance between multiple nodes.

Here is a talk given by Emile Vauge at GopherCon 2017. You will learn Træfik basics in less than 10 minutes.

Here is a talk given by Ed Robinson at ContainerCamp UK conference. You will learn fundamental Træfik features and see some demos with Kubernetes.

Web UI

You can access the simple HTML frontend of Træfik.

Test it

• The simple way: grab the latest binary from the releases page and just run it with the sample configuration file:

./traefik --configFile=traefik.toml

• Use the tiny Docker image and just run it with the sample configuration file:

docker run -d -p 8080:8080 -p 80:80 -v $PWD/traefik.toml:/etc/traefik/traefik.toml traefik

• From sources:

git clone https://github.com/containous/traefik

Documentation

You can find the complete documentation at https://docs.traefik.io. A collection of contributions around Træfik can be found at https://awesome.traefik.io.

Support

To get basic support, you can:

• join the Træfik community Slack channel:
• use Stack Overflow (using the traefik tag)

If you prefer commercial support, please contact containo.us by mail: mailto:support@containo.us.

Release cycle

• Release: We try to release a new version every 2 months
  • i.e.: 1.3.0, 1.4.0, 1.5.0
• Release candidate: we do RC (1.x.0-rcy) before the final release (1.x.0)
  • i.e.: 1.1.0-rc1 -> 1.1.0-rc2 -> 1.1.0-rc3 -> 1.1.0-rc4 -> 1.1.0
• Bug-fixes: For each version we release bug fixes
  • i.e.: 1.1.1, 1.1.2, 1.1.3
  • those versions contain only bug-fixes
  • no additional features are delivered in those versions
• Each version is supported until the next one is released
  • i.e.: 1.1.x will be supported until 1.2.0 is out
• We use Semantic Versioning

Contributing

Please refer to contributing documentation.

Code of Conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

Maintainers

Information about process and maintainers

Plumbing

• Oxy: an awesome proxy library made by Mailgun folks
• Gorilla mux: famous request router
• Negroni: web middlewares made simple
• Lego: the best Let's Encrypt library in go

Credits

Kudos to Peka for his awesome work on the logo . Traefik's logo licensed under the Creative Commons 3.0 Attributions license.

Traefik's logo was inspired by the gopher stickers made by Takuya Ueda (https://twitter.com/tenntenn). The original Go gopher was designed by Renee French (http://reneefrench.blogspot.com/).