Traefik

Introduction

Traefik is an open-source Edge Router that makes publishing your services a fun and easy experience. It receives requests on behalf of your system and finds out which components are responsible for handling them.

What sets Traefik apart, besides its many features, is that it automatically discovers the right configuration for your services. The magic happens when Traefik inspects your infrastructure, where it finds relevant information and discovers which service serves which request.

Traefik is natively compliant with every major cluster technology, such as Kubernetes, Docker, Docker Swarm, AWS, Mesos, Marathon, and the list goes on; and can handle many at the same time. (It even works for legacy software running on bare metal.)

With Traefik, there is no need to maintain and synchronize a separate configuration file: everything happens automatically, in real time (no restarts, no connection interruptions). With Traefik, you spend time developing and deploying new features to your system, not on configuring and maintaining its working state.

Documentation

https://doc.traefik.io/traefik/

Redirect HTTP to HTTPS

https://jensknipper.de/blog/traefik-http-to-https-redirect/

Docker

The docker compose file below will create a traefik container with the Admin dashboard enabled, the Docker provider, automatic HTTP to HTTPS redirection, and Let's Encrypt SSL Certificates using AWS Route53 or GANDI as the DNS challenge providers.

sudo -i
docker network create --driver=bridge --subnet=172.20.0.0/16 traefik
mkdir -p /root/docker/stacks/traefik
nano /root/docker/stacks/traefik/docker-compose.yml

version: "3.3"

services:

  traefik:
    image: "traefik:latest"
    container_name: "traefik"
    command:
      - "--api.dashboard=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"
      - "--entrypoints.web.http.redirections.entrypoint.to=websecure"
      - "--entrypoints.web.http.redirections.entrypoint.scheme=https"
      - "--entrypoints.websecure.address=:443"
      - "--entrypoints.websecure.http.tls.domains[0].main=mydomain.org.uk"
      - "--entrypoints.websecure.http.tls.domains[0].sans=*.mydomain.org.uk"
      - "--entrypoints.websecure.http.tls.certresolver=letsencrypt-aws"
      - "--certificatesresolvers.letsencrypt-aws.acme.dnschallenge=true"
      - "--certificatesresolvers.letsencrypt-aws.acme.dnschallenge.provider=route53"
      - "--certificatesresolvers.letsencrypt-aws.acme.email=me@mydomain.co.uk"
      - "--certificatesresolvers.letsencrypt-aws.acme.storage=/acme/letsencrypt-aws.json"
      - "--certificatesresolvers.letsencrypt-gandi.acme.dnschallenge=true"
      - "--certificatesresolvers.letsencrypt-gandi.acme.dnschallenge.provider=gandiv5"
      - "--certificatesresolvers.letsencrypt-gandi.acme.email=me@mydomain.co.uk"
      - "--certificatesresolvers.letsencrypt-gandi.acme.storage=/acme/letsencrypt-gandi.json"
    networks:
      traefik:
        ipv4_address: 172.20.0.2
    ports:
      - "80:80"
      - "443:443"
    networks:
      - "traefik"
    volumes:
      - "./acme/:/acme/"
      - "/var/run/docker.sock:/var/run/docker.sock:ro"
    environment:
      - "AWS_ACCESS_KEY_ID=xxxxxxxxxxxxxxxxxxxx"
      - "AWS_SECRET_ACCESS_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
      - "GANDIV5_API_KEY=xxxxxxxxxxxxxxxxxxxxx"
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.traefik-dashboard.rule=Host(`traefik-dashboard.mydomain.org.uk`) && (PathPrefix(`/api`) || PathPrefix(`/dashboard`))"
      - "traefik.http.routers.traefik-dashboard.service=api@internal"
      - "traefik.http.routers.traefik-dashboard.middlewares=auth"
      - "traefik.http.middlewares.auth.basicauth.users=my-username:$$2a$$04xxxxxxxxxxxxxxxxxxxxxxTebHUlFVbwar4jlRBO1a8K"
    restart: "always"

networks:
  traefik:
    external: true