traefik/README.md

![Træfɪk](http://traefik.github.io/traefik.logo.svg  "Træfɪk")
___

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Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
It supports several backends ([Docker :whale:](https://www.docker.com/), [Mesos/Marathon](https://mesosphere.github.io/marathon/), [Consul](https://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.


## Features

- No dependency hell, single binary made with go
- Simple json Rest API
- Simple TOML file configuration
- Multiple backends supported: Docker, Mesos/Marathon, Consul, Etcd, and more to come
- Watchers for backends, can listen change in backends to apply a new configuration automatically
- Hot-reloading of configuration. No need to restart the process
- Graceful shutdown http connections during hot-reloads
- Circuit breakers on backends
- Round Robin, rebalancer load-balancers
- Rest Metrics
- Tiny docker image included
- SSL backends support
- SSL frontend support
- WebUI

## Demo

Here is a demo of Træfɪk using Docker backend, showing a load-balancing between two servers, hot reloading of configuration, and graceful shutdown.

[![asciicast](https://asciinema.org/a/4tcyde7riou5vxulo6my3mtko.png)](https://asciinema.org/a/4tcyde7riou5vxulo6my3mtko)

## Plumbing

- [Oxy](https://github.com/mailgun/oxy/): an awsome proxy library made by Mailgun guys
- [Gorilla mux](https://github.com/gorilla/mux): famous request router
- [Negroni](https://github.com/codegangsta/negroni): web middlewares made simple
- [Manners](https://github.com/mailgun/manners): graceful shutdown of http.Handler servers

## Quick start

- The simple way: grab the latest binary from the [releases](https://github.com/emilevauge/traefik/releases) page and just run it with the [sample configuration file](https://raw.githubusercontent.com/EmileVauge/traefik/master/traefik.sample.toml):

```shell
./traefik traefik.toml
```

- Use the tiny Docker image:

```shell
docker run -d -p 8080:8080 -p 80:80 -v $PWD/traefik.toml:/traefik.toml emilevauge/traefik
```

- From sources:

```shell
git clone https://github.com/EmileVauge/traefik
```

## Documentation

You can find the complete documentation [here](docs/index.md).

## Benchmarks

Refer to the [benchmarks section](docs/index.md#benchmarks) in the documentation.

## Web UI

You can access to a simple HTML frontend of Træfik.

![Web UI Providers](docs/img/web.frontend.png)
![Web UI Health](docs/img/traefik-health.png)

## Contributing

### Building

You need either [Docker](https://github.com/docker/docker) and `make`, or `go` and `glide` in order to build traefik.

#### Setting up your `go` environment
- You need `go` v1.5
- You need to set `export GO15VENDOREXPERIMENT=1` environment variable
- If you clone Træfɪk into something like `~/go/src/github.com/traefik`, your `GOPATH` variable will have to be set to `~/go`: export `GOPATH=~/go`.

#### Using `Docker` and `Makefile`

You need to run the `binary` target. This will create binaries for
linux platform in the `dist` folder.

```bash
$ make binary
docker build -t "traefik-dev:no-more-godep-ever" -f build.Dockerfile .
Sending build context to Docker daemon 295.3 MB
Step 0 : FROM golang:1.5
 ---> 8c6473912976
Step 1 : RUN go get github.com/Masterminds/glide
[...]
docker run --rm  -v "/var/run/docker.sock:/var/run/docker.sock" -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -v "/home/emile/dev/go/src/github.com/emilevauge/traefik/"dist":/go/src/github.com/emilevauge/traefik/"dist"" "traefik-dev:no-more-godep-ever" ./script/make.sh generate binary
---> Making bundle: generate (in .)
removed 'gen.go'

---> Making bundle: binary (in .)

$ ls dist/
traefik*
```

#### Using `glide`

The idea behind `glide` is the following :

- when checkout(ing) a project, **run `glide up`** to install
  (`go get …`) the dependencies in the `GOPATH`.
- if you need another dependency, import and use it in
  the source, and **run `glide get github.com/Masterminds/cookoo`** to save it in
  `vendor` and add it to your `glide.yaml`.

```bash
$ glide up --update-vendored
# generate
$ go generate
# Simple go build
$ go build
# Using gox to build multiple platform
$ gox "linux darwin" "386 amd64 arm" \
    -output="dist/traefik_{{.OS}}-{{.Arch}}"
# run other commands like tests
$ go test ./...
ok      _/home/vincent/src/github/vdemeester/traefik    0.004s
```

### Tests

You can run unit tests using the `test-unit` target and the
integration test using the `test-integration` target.

```bash
$ make test-unit
docker build -t "traefik-dev:your-feature-branch" -f build.Dockerfile .
# […]
docker run --rm -it -e OS_ARCH_ARG -e OS_PLATFORM_ARG -e TESTFLAGS -v "/home/vincent/src/github/vdemeester/traefik/dist:/go/src/github.com/emilevauge/traefik/dist" "traefik-dev:your-feature-branch" ./script/make.sh generate test-unit
---> Making bundle: generate (in .)
removed 'gen.go'

---> Making bundle: test-unit (in .)
+ go test -cover -coverprofile=cover.out .
ok      github.com/emilevauge/traefik   0.005s  coverage: 4.1% of statements

Test success
```