Træfɪk (pronounced like traffic) is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm, Kubernetes, Marathon, Mesos, Consul, Etcd, Zookeeper, BoltDB, Eureka, Rest API, file...) to manage its configuration automatically and dynamically.

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 Træfɪk.

Træfɪk 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
• Rest API
• Multiple backends supported: Docker, Swarm, Kubernetes, Marathon, Mesos, Consul, Etcd, and more to come
• Watchers for backends, can listen for changes in backends to apply a new configuration automatically
• Hot-reloading of configuration. No need to restart the process
• Graceful shutdown http connections
• Circuit breakers on backends
• Round Robin, rebalancer load-balancers
• Rest Metrics
• Tiny official docker image included
• SSL backends support
• SSL frontend support (with SNI)
• Clean AngularJS Web UI
• Websocket support
• HTTP/2 support
• Retry request if network error
• Let's Encrypt support (Automatic HTTPS with renewal)
• High Availability with cluster mode

Quickstart

You can have a quick look at Træfɪk in this Katacoda tutorial that shows how to load balance requests between multiple Docker containers.

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

Here is a talk (in French) given by Emile Vauge at the Devoxx France 2016 conference. You will learn fundamental Træfɪk features and see some demos with Docker, Mesos/Marathon and Let's Encrypt.

Web UI

You can access to a simple HTML frontend of Træfik.

Plumbing

• Oxy: an awesome proxy library made by Mailgun guys
• Gorilla mux: famous request router
• Negroni: web middlewares made simple
• Manners: graceful shutdown of http.Handler servers
• Lego: the best Let's Encrypt library in go

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:

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 here.

Contributing

Please refer to this section.

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.

Support

You can join to get basic support. If you prefer commercial support, please contact containo.us by mail: mailto:support@containo.us.

Træfɪk here and there

These projects use Træfɪk internally. If your company uses Træfɪk, we would be glad to get your feedback :) Contact us on

• Project Mantl from Cisco

Mantl is a modern platform for rapidly deploying globally distributed services. A container orchestrator, docker, a network stack, something to pool your logs, something to monitor health, a sprinkle of service discovery and some automation.

• Project Apollo from Cap Gemini

Apollo is an open source project to aid with building and deploying IAAS and PAAS services. It is particularly geared towards managing containerized applications across multiple hosts, and big data type workloads. Apollo leverages other open source components to provide basic mechanisms for deployment, maintenance, and scaling of infrastructure and applications.

Partners

Zenika is one of the leading providers of professional Open Source services and agile methodologies in Europe. We provide consulting, development, training and support for the world’s leading Open Source software products.

Founded in 2014, Asteris creates next-generation infrastructure software for the modern datacenter. Asteris writes software that makes it easy for companies to implement continuous delivery and realtime data pipelines. We support the HashiCorp stack, along with Kubernetes, Apache Mesos, Spark and Kafka. We're core committers on mantl.io, consul-cli and mesos-consul.

Maintainers

• Emile Vauge @emilevauge
• Vincent Demeester @vdemeester
• Russell Clare @Russell-IO
• Ed Robinson @errm
• Daniel Tomcej @dtomcej
• Manuel Laufenberg @SantoDE

Credits

Kudos to Peka for his awesome work on the logo