Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Mesos/Marathon, Consul, Etcd, Rest API, file...) to manage its configuration automatically and dynamically (hot-reload).

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
• Rest Metrics
• Tiny docker image included
• SSL backends support
• SSL frontend support

Plumbing

• Oxy: an awsome proxy library made by Mailgun guys
• Gorilla mux: famous request router
• Negroni: web middlewares made simple
• Graceful: graceful shutdown of http.Handler servers

Quick start

• The simple way: go to the releases page and get a binary.
• Or simply execute:

go get github.com/emilevauge/traefik

• Just run it!

./traefik traefik.toml

Configuration

Global configuration

# traefik.toml
port = ":80"
graceTimeOut = 10
logLevel = "DEBUG"
traefikLogsStdout = true
# traefikLogsFile = "log/traefik.log"
# accessLogsFile = "log/access.log"
# CertFile = "traefik.crt"
# KeyFile = "traefik.key"

File backend

Like any other reverse proxy, Træfɪk can be configured with a file. You have two choices:

• simply add your configuration at the end of the global configuration file traefik.tml :

# traefik.toml
port = ":80"
graceTimeOut = 10
logLevel = "DEBUG"
traefikLogsStdout = true
# traefikLogsFile = "log/traefik.log"
# accessLogsFile = "log/access.log"
# CertFile = "traefik.crt"
# KeyFile = "traefik.key"

[file]

[backends]
  [backends.backend1]
    [backends.backend1.servers.server1]
    url = "http://172.17.0.2:80"
    weight = 10
    [backends.backend1.servers.server2]
    url = "http://172.17.0.3:80"
    weight = 1
  [backends.backend2]
    [backends.backend2.servers.server1]
    url = "http://172.17.0.4:80"
    weight = 1

[routes]
  [routes.route1]
  backend = "backend2"
    [routes.route1.rules.test1]
    category = "Host"
    value = "test.localhost"
  [routes.route2]
  backend = "backend1"
    [routes.route2.rules.test2]
    category = "Path"
    value = "/test"

• or put your configuration in a separate file, for example rules.tml:

# traefik.toml
port = ":80"
graceTimeOut = 10
logLevel = "DEBUG"
traefikLogsStdout = true
# traefikLogsFile = "log/traefik.log"
# accessLogsFile = "log/access.log"
# CertFile = "traefik.crt"
# KeyFile = "traefik.key"

[file]
filename = "rules.toml"

# rules.toml
[backends]
  [backends.backend1]
    [backends.backend1.servers.server1]
    url = "http://172.17.0.2:80"
    weight = 10
    [backends.backend1.servers.server2]
    url = "http://172.17.0.3:80"
    weight = 1
  [backends.backend2]
    [backends.backend2.servers.server1]
    url = "http://172.17.0.4:80"
    weight = 1

[routes]
  [routes.route1]
  backend = "backend2"
    [routes.route1.rules.test1]
    category = "Host"
    value = "test.localhost"
  [routes.route2]
  backend = "backend1"
    [routes.route2.rules.test2]
    category = "Path"
    value = "/test"

If you want Træfɪk to watch file changes automatically, just add:

[file]
watch = true