How to add proper labels in docker for SSL? - ssl

Question

I have managed to setup Traefik to to work with my docker swarm and for HTTP requests it works great. However, I don't know how to setup SSL for some of my containers. I will be using letsencrypt for generating certificates.
traefik.toml (partial)
defaultEntryPoints = ["https","http"]
[entryPoints]
[entryPoints.http]
address = ":80"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
[acme]
email = "acme#example.com"
storage = "acme.json"
entryPoint = "https"
onHostRule = true
caServer = "https://acme-staging.api.letsencrypt.org/directory"
docker-compose.yml
version: '3'
services:
web:
...
deploy:
labels:
- "traefik.enable=true"
- "traefik.frontend.rule=Host:example.com,www.example.com"
- "traefik.docker.network=public"
- "traefik.frontend.entryPoints=http"
- "traefik.backend=service_web"
In this configuration, my application never reaches SSL because my containers do not have SSL entryPoint setup. If I change "traefik.frontend.entryPoints" to "https", Letsencrypt gets called (LE givges error because of staging but that doesn't matter to me at this moment).
My biggest problem is that, I still don't know how to convert traefik TOML config into docker-compose labels. For example, Traefik docs explain entrypoints but I have bunch of services that live under different domains. Some have SSL, some do not have SSL; therefore, I want to be able to set up both http and https entryPoints, http to https redirects etc. using only docker-compose.
Also, once I am able to set entrypoints in docker-compose, do I need to keep the [entryPoints] block in traefik.toml?

Answer 1

Ahoi!
Requirements: Local-Persist Volume Plugin:
https://github.com/CWSpear/local-persist (otherwise the Volume Driver has to be changed)
The Network for Traefik has to be pre-created: "docker network create proxy -d overlay"
(1) Fire Up Traefik:
version: "3"
services:
traefik:
image: traefik
#command: --consul --consul.endpoint=consul:8500
#command: storeconfig --consul --consul.endpoint=consul:8500
networks:
- proxy
ports:
- 80:80
- 443:443
#- 8080:8080
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- traefikdata:/etc/traefik/
deploy:
#replicas: 3
replicas: 1
placement:
constraints: [node.role == manager]
update_config:
parallelism: 1
delay: 45s
monitor: 15s
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 10
window: 60s
volumes:
traefikdata:
driver: local-persist
driver_opts:
mountpoint: /data/docker/proxy
networks:
proxy:
external: true
Important Note: When using ACME and you'd like to scale the Traefik (like here 3), you have to use Consul or ETCD as a "storage" for the Config.
You do not use Consule or ETCD if you just use one Instance of Traefik.
With a normal Certificate ETCD & Consul is never required.
(2) Mount traefik.toml
logLevel = "WARN"
debug = false
defaultEntryPoints = ["http", "https"]
[entryPoints]
[entryPoints.http]
address = ":80"
compress = false
[entryPoints.http.redirect]
entryPoint = "https"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
#Letsencrypt
[acme]
email = "admin#berndklaus.at"
storage = "traefik/acme/account"
entryPoint = "https"
onHostRule = true
onDemand = true
#[[acme.domains]]
# main = "yourdomain.at"
# sans = ["sub1.yourdomain.at", "www.yourdomain.at"]
#[[acme.domains]]
# main = "anotherdomain.at"
#[web]
#address = ":8080"
[docker]
domain = "docker.localhost"
watch = true
swarmmode = true
The uncommented Part is not mandatory
(3) Start any Service
version: '3'
services:
nginx:
image: nginx
deploy:
labels:
- "traefik.port=80"
- "traefik.docker.network=proxy"
- "traefik.frontend.rule=Host:sub1.yourdomain.at"
- "traefik.backend=nginx"
- "traefik.frontend.entryPoints=http,https"
replicas: 1
networks:
proxy:
aliases:
- nginx
volumes:
- html:/usr/share/nginx/html
environment:
- NGINX_HOST=sub.yourdomain.at
- NGINX_PORT=80
#command: /bin/bash -c "envsubst < /etc/nginx/conf.d/mysite.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"
networks:
proxy:
external: true
default:
driver: overlay
volumes:
html:
driver: local-persist
driver_opts:
mountpoint: /data/docker/html
Some more examples: https://github.com/Berndinox/compose-v3-collection