I run most of my services in Docker and previously I was using
nginx as a reverse and TLS termination proxy together with Let's Encrypt. That worked great but everytime I wanted to try something new I had to copy-paste another conf and change a few values. I probably could have automated that to some extent and there are others who have but with my recent migration to VPSes I figured I'd give Traefik a try, if nothing else for their awesome logo!
Here I'll show you how to set up Traefik with GUI, http redirection and automatic Let's Encrypt certificates. We'll also add basic auth to the Traefik GUI.
This guide assumes some general knowledge of Linux and that you have a server available with these services installed:
This is based on the official guide but with a few additions. I will show you how to add the web dashboard and API - protected by Basic Auth - mostly because it's fun. If you have no use for it or believe it to be unsafe, you can skip that part.
First start with creating a network for your web-facing containers to connect to.
docker network create web
Then we create a directory and the necessary files, as sudo if needed.
sudo su mkdir -p /opt/traefik touch /opt/traefik/docker-compose.yml touch /opt/traefik/acme.json && chmod 600 /opt/traefik/acme.json touch /opt/traefik/traefik.toml
Now let's add our
version: '2' services: proxy: image: traefik:v1.7.12-alpine command: --configFile=/traefik.toml restart: unless-stopped networks: - web ports: - "80:80" - "443:443" volumes: - /var/run/docker.sock:/var/run/docker.sock - /opt/traefik/traefik.toml:/traefik.toml - /opt/traefik/acme.json:/acme.json # REMOVE this section if you don't want the dashboard/API labels: - "traefik.enable=true" - "traefik.frontend.rule=Host:example.com" - "traefik.port=8080" networks: web: external: true
☝️ Remember to replace
traefik.frontend.rule if you keep the API.
... and the config for Traefik...
# Change this if needed logLevel = "ERROR" defaultEntryPoints = ["https","http"] [entryPoints] [entryPoints.http] address = ":80" [entryPoints.http.redirect] entryPoint = "https" [entryPoints.https] address = ":443" [entryPoints.https.tls] # REMOVE this section if you don't want the dashboard/API [api] entryPoint = "api" dashboard = true [retry] [docker] endpoint = "unix:///var/run/docker.sock" domain = "mydomain" watch = true # I prefer to expose my containers explicitly exposedbydefault = false [acme] email = "myemail" storage = "acme.json" entryPoint = "https" OnHostRule = true [acme.httpChallenge] entryPoint = "http"
☝️ Add your domain and email under
... and we should be good to go!
cd /opt/traefik/ docker-compose up -d
Check the logs (
docker-compose logs) and head to your configured domain and you should see something like this (screenshot was taken a few versions back, it's been redesigned).
Since we have exposed the API of Traefik we'd like to have some authentication. Basic auth is supported so let's add that. Run this for the username you want - for example
admin - and enter your password.
sudo apt install apache2-utils htpasswd -n username
Here's what I got for admin/admin.
Now that needs to go in the
traefik.toml but to work any
$ signs have to be escaped with another
Add this to the
[entryPoints.api] address = ":8080" [entryPoints.api.auth] [entryPoints.api.auth.basic] users = [ "admin:$$apr1$$IBj9Hfsd$$kf7vXLpY4/9XD365jcp/n1" ]
Now stop and rebuild your service...
docker-compose stop docker-compose up -d
...and you should have basic auth!
Add a container
Now of course to have any use for this we need a container! Why not a blog with
Create a directory and a
docker-compose.yml, remember to change the domain and add the hostname to your DNS! 👍
mkdir -p /opt/ghost nano /opt/ghost/docker-compose.yml
version: '2' services: server: image: ghost:alpine container_name: ghost restart: unless-stopped networks: - web labels: # This one is important since we default to not expose - "traefik.enable=true" - "traefik.frontend.rule=Host:blog.example.com" - "traefik.port=2368" - "traefik.docker.network=web" volumes: - /opt/ghost/blog:/var/lib/ghost/content environment: - NODE_ENV=production - url=https://blog.example.com networks: web: external: true
Run the usual
docker-compose up -d and voilà blog up with SSL/TLS and all, pure magic 😀