[](https://semaphoreci.com/containous/traefik) [](https://docs.traefik.io) [](https://goreportcard.com/report/github.com/containous/traefik) [](https://github.com/containous/traefik/blob/master/LICENSE.md) [](https://traefik.herokuapp.com) [](https://twitter.com/intent/follow?screen_name=traefikproxy) Træfik (pronounced like [traffic](https://speak-ipa.bearbin.net/speak.cgi?speak=%CB%88tr%C3%A6f%C9%AAk)) 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 mode](https://docs.docker.com/engine/swarm/), [Kubernetes](https://kubernetes.io), [Marathon](https://mesosphere.github.io/marathon/), [Consul](https://www.consul.io/), [Etcd](https://coreos.com/etcd/), [Rancher](https://rancher.com), [Amazon ECS](https://aws.amazon.com/ecs), and a lot more) 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 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](/benchmarks) - No dependency hell, single binary made with go - [Tiny](https://microbadger.com/images/traefik) [official](https://hub.docker.com/r/_/traefik/) 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, Statd) - Clean AngularJS Web UI - Websocket, HTTP/2, GRPC ready - Access Logs (JSON, CLF) - [Let's Encrypt](https://letsencrypt.org) support (Automatic HTTPS with renewal) - High Availability with cluster mode ## Supported backends - [Docker](https://www.docker.com/) / [Swarm mode](https://docs.docker.com/engine/swarm/) - [Kubernetes](https://kubernetes.io) - [Mesos](https://github.com/apache/mesos) / [Marathon](https://mesosphere.github.io/marathon/) - [Rancher](https://rancher.com) (API, Metadata) - [Consul](https://www.consul.io/) / [Etcd](https://coreos.com/etcd/) / [Zookeeper](https://zookeeper.apache.org) / [BoltDB](https://github.com/boltdb/bolt) - [Eureka](https://github.com/Netflix/eureka) - [Amazon ECS](https://aws.amazon.com/ecs) - [Amazon DynamoDB](https://aws.amazon.com/dynamodb) - File - Rest API ## Quickstart You can have a quick look at Træfik in this [Katacoda tutorial](https://www.katacoda.com/courses/traefik/deploy-load-balancer) that shows how to load balance requests between multiple Docker containers. Here is a talk given by [Emile Vauge](https://github.com/emilevauge) at [GopherCon 2017](https://gophercon.com). You will learn Træfik basics in less than 10 minutes. [](https://www.youtube.com/watch?v=RgudiksfL-k) Here is a talk given by [Ed Robinson](https://github.com/errm) at [ContainerCamp UK](https://container.camp) conference. You will learn fundamental Træfik features and see some demos with Kubernetes. [](https://www.youtube.com/watch?v=aFtpIShV60I) ## 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 traefik ``` ## Test it You can test Træfik easily using [Docker compose](https://docs.docker.com/compose), with this `docker-compose.yml` file in a folder named `traefik`: ```yaml version: '2' services: proxy: image: traefik command: --web --docker --docker.domain=docker.localhost --logLevel=DEBUG networks: - webgateway ports: - "80:80" - "8080:8080" volumes: - /var/run/docker.sock:/var/run/docker.sock - /dev/null:/traefik.toml networks: webgateway: driver: bridge ``` Start it from within the `traefik` folder: ```shell docker-compose up -d ``` In a browser you may open [http://localhost:8080](http://localhost:8080) to access Træfik's dashboard and observe the following magic. Now, create a folder named `test` and create a `docker-compose.yml` in it with this content: ```yaml version: '2' services: whoami: image: emilevauge/whoami networks: - web labels: - "traefik.backend=whoami" - "traefik.frontend.rule=Host:whoami.docker.localhost" networks: web: external: name: traefik_webgateway ``` Then, start and scale it in the `test` folder: ```shell docker-compose up -d docker-compose scale whoami=2 ``` Finally, test load-balancing between the two services `test_whoami_1` and `test_whoami_2`: ```shell curl -H Host:whoami.docker.localhost http://127.0.0.1 ``` ```yaml 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 ``` ```shell curl -H Host:whoami.docker.localhost http://127.0.0.1 ``` ```yaml 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 ```