[](https://travis-ci.org/containous/traefik) [](https://docs.traefik.io) [](http://goreportcard.com/report/containous/traefik) [](https://github.com/containous/traefik/blob/master/LICENSE.md) [](https://traefik.herokuapp.com) [](https://twitter.com/intent/follow?screen_name=traefikproxy) Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends ([Docker](https://www.docker.com/), [Swarm](https://docs.docker.com/swarm), [Mesos/Marathon](https://mesosphere.github.io/marathon/), [Consul](https://www.consul.io/), [Etcd](https://coreos.com/etcd/), [Zookeeper](https://zookeeper.apache.org), [BoltDB](https://github.com/boltdb/bolt), 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! ## Demo Here is a demo of Træfɪk using Docker backend, showing a load-balancing between two servers, hot reloading of configuration, and graceful shutdown. [](https://asciinema.org/a/4tcyde7riou5vxulo6my3mtko) ## Get it ### Binary You can grab the latest binary from the [releases](https://github.com/containous/traefik/releases) page and just run it with the [sample configuration file](https://raw.githubusercontent.com/containous/traefik/master/traefik.sample.toml): ```shell ./traefik -c traefik.toml ``` ### Docker Using the tiny Docker image: ```shell docker run -d -p 8080:8080 -p 80:80 -v $PWD/traefik.toml:/etc/traefik/traefik.toml containous/traefik ``` ## Test it You can test Træfɪk easily using [Docker compose](https://docs.docker.com/compose), with this `docker-compose.yml` file: ```yaml traefik: image: containous/traefik command: --web --docker --docker.domain=docker.localhost --logLevel=DEBUG ports: - "80:80" - "8080:8080" volumes: - /var/run/docker.sock:/var/run/docker.sock - /dev/null:/traefik.toml whoami1: image: emilevauge/whoami labels: - "traefik.backend=whoami" - "traefik.frontend.rule=Host:whoami.docker.localhost" whoami2: image: emilevauge/whoami labels: - "traefik.backend=whoami" - "traefik.frontend.rule=Host:whoami.docker.localhost" ``` Then, start it: ``` docker-compose up -d ``` Finally, test load-balancing between the two servers `whoami1` and `whoami2`: ```bash $ curl -H Host:whoami.docker.localhost http://127.0.0.1 Hostname: ef194d07634a IP: 127.0.0.1 IP: ::1 IP: 172.17.0.4 IP: fe80::42:acff:fe11:4 GET / HTTP/1.1 Host: 172.17.0.4:80 User-Agent: curl/7.35.0 Accept: */* Accept-Encoding: gzip X-Forwarded-For: 172.17.0.1 X-Forwarded-Host: 172.17.0.4:80 X-Forwarded-Proto: http X-Forwarded-Server: dbb60406010d $ curl -H Host:whoami.docker.localhost http://127.0.0.1 Hostname: 6c3c5df0c79a IP: 127.0.0.1 IP: ::1 IP: 172.17.0.3 IP: fe80::42:acff:fe11:3 GET / HTTP/1.1 Host: 172.17.0.3:80 User-Agent: curl/7.35.0 Accept: */* Accept-Encoding: gzip X-Forwarded-For: 172.17.0.1 X-Forwarded-Host: 172.17.0.3:80 X-Forwarded-Proto: http X-Forwarded-Server: dbb60406010d ```