Routing between two traefiks (splited by constraints)

Traefik Traefik v2
4

Here is another template using only a docker-compose file.

traefik-int is labeled with traefik.ext=true, so it is automatically picked up by traefik-ext, and using entrypoint websecure, it is (incl. /dashboard/) practically available externally.

Again, it's missing a TLS wildcard certresolver for traefik-ext and all requests unknown to traefik-ext are passed to traefik-int using rule=PathPrefix(`/`).

Other "internal" services must use label traefik.int=true and entrypoint web.

version: '3.9'

networks:
  proxy-ext:
    name: proxy-ext
    driver: overlay
  proxy-int:
    name: proxy-int
    driver: overlay

volumes:
  traefik-certificates:

services:
  traefik-ext:
    image: traefik:v2.10
    hostname: '{{.Node.Hostname}}'
    ports:
      - target: 80
        published: 80
        protocol: tcp
        mode: host
      - target: 443
        published: 443
        protocol: tcp
        mode: host
    networks:
      - proxy-ext
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - traefik-certificates:/certificates
    command:
      - --providers.docker=true
      - --providers.docker.swarmMode=true
      - --providers.docker.exposedByDefault=false
      - --providers.docker.network=proxy-ext
      - --providers.docker.constraints=Label(`traefik.ext`,`true`)
      - --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=true
      - --entryPoints.websecure.http.tls.certResolver=myresolver
      - --api.debug=true
      - --api.dashboard=true
      - --log.level=INFO
      - --accesslog=true
      - --certificatesResolvers.myresolver.acme.email=mail.example.com
      - --certificatesResolvers.myresolver.acme.storage=/certificates/acme.json
      - --certificatesresolvers.myresolver.acme.tlschallenge=true
    deploy:
      mode: global
      placement:
        constraints:
          - node.role==manager
      labels:
        - traefik.ext=true
        - traefik.enable=true
        - traefik.http.routers.traefik-ext.entrypoints=websecure
        - traefik.http.routers.traefik-ext.rule=Host(`traefik-ext.example.com`)
        - traefik.http.routers.traefik-ext.service=api@internal
        - traefik.http.routers.traefik-ext.middlewares=auth-ext
        - 'traefik.http.middlewares.auth-ext.basicauth.users=test:$$apr1$$H6uskkkW$$IgXLP6ewTrSuBkTrqE8wj/'
        - traefik.http.services.dummy-svc.loadbalancer.server.port=9999


  traefik-int:
    image: traefik:v2.10
    hostname: '{{.Node.Hostname}}'
    networks:
      - proxy-ext
      - proxy-int
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    command:
      - --providers.docker=true
      - --providers.docker.swarmMode=true
      - --providers.docker.exposedByDefault=false
      - --providers.docker.network=proxy-int
      - --providers.docker.constraints=Label(`traefik.int`,`true`)
      - --entryPoints.web.address=:80
      - --entryPoints.web.forwardedHeaders.insecure=true
      - --api.debug=true
      - --api.dashboard=true
      - --log.level=INFO
      - --accesslog=true
    deploy:
      mode: global
      placement:
        constraints:
          - node.role==manager
      labels:
        - traefik.ext=true
        - traefik.enable=true
        - traefik.http.routers.traefik-int.entrypoints=websecure
        - traefik.http.routers.traefik-int.rule=Host(`traefik-int.example.com`)
        - traefik.http.routers.traefik-int.service=api@internal
        - traefik.http.routers.traefik-int.middlewares=auth-int
        - 'traefik.http.middlewares.auth-int.basicauth.users=test:$$apr1$$H6uskkkW$$IgXLP6ewTrSuBkTrqE8wj/'
        - traefik.http.services.dummy-svc.loadbalancer.server.port=9999

        - traefik.http.routers.traefik-fwd.entrypoints=websecure
        - traefik.http.routers.traefik-fwd.rule=PathPrefix(`/`)
        - traefik.http.routers.traefik-fwd.service=fwd
        - traefik.http.services.fwd.loadbalancer.server.port=80


  whoami-ext:
    hostname: '{{.Node.Hostname}}'
    image: traefik/whoami:v1.10
    networks:
      - proxy-ext
    deploy:
      mode: global
      labels:
        - traefik.ext=true
        - traefik.enable=true
        - traefik.http.routers.whoami-ext.entrypoints=websecure
        - traefik.http.routers.whoami-ext.rule=Host(`whoami-ext.example.com`)
        - traefik.http.services.whoami-ext.loadbalancer.server.port=80


  whoami-int:
    hostname: '{{.Node.Hostname}}'
    image: traefik/whoami:v1.10
    networks:
      - proxy-int
    deploy:
      mode: global
      labels:
        - traefik.int=true
        - traefik.enable=true
        - traefik.http.routers.whoami-int.entrypoints=web
        - traefik.http.routers.whoami-int.rule=Host(`whoami-int.example.com`)
        - traefik.http.services.whoami-int.loadbalancer.server.port=80
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