Traefik 2.2.0 - Docker swarm - No access through LAN

Traefik Traefik v2
1

Hello everyone,

I have set up a RPi cluster and used docker swarm with traefik 1.7.x before without issues.

Now I've upgraded to traefik 2.2.0, after fighting a little with the new concepts everything works fine from outside my LAN network.

The services like the traefik dashboard or nextcloud using the domains externally (e.g. traefik.sub.domain.org, or nextcloud.sub.domain.org) are accessible, but if I try to connect from my LAN network it does not work. This means that to access my nextcloud I have to connect to my mobile hotspot, instead of my wifi.
The hostnames are dynamic DNS on noip.com

What might I be missing?

Here my traefik.yml

version: '3.7'
services:
  reverse-proxy:
    image: traefik:latest
    command:
      - '--providers.docker=true'
      - '--entryPoints.web.address=:80'
      - '--entryPoints.websecure.address=:443'
      - '--providers.providersThrottleDuration=2s'
      - '--providers.docker.watch=true'
      - '--providers.docker.swarmMode=true'
      - '--providers.docker.swarmModeRefreshSeconds=15s'
      - '--providers.docker.exposedbydefault=false'
      - '--providers.docker.defaultRule=Host(`sub.domain.org`)'
      - '--providers.docker.constraints=Label(`traefik.tags`,`public`)'
      - '--accessLog.bufferingSize=0'
      - '--api=true'
      - '--api.dashboard=true'
      - '--log.level=DEBUG'
      - '--certificatesResolvers.letsencrypt.acme.tlsChallenge=true'
      - '--certificatesResolvers.letsencrypt.acme.httpChallenge=true'
      - '--certificatesResolvers.letsencrypt.acme.httpchallenge.entrypoint=web'
      - '--certificatesResolvers.letsencrypt.acme.email=admin@domain.org'
      - '--certificatesResolvers.letsencrypt.acme.storage=/var/lib/traefik/acme.json'
    volumes:
      - '/var/run/docker.sock:/var/run/docker.sock:ro'
      - 'vol_traefik_certs:/var/lib/traefik'
      - 'vol_traefik_configs:/run'
    environment:
      - TZ=${TIME_ZONE:-Europe/Berlin}
    ports:
      - '80:80'
      - '443:443'
    deploy:
      placement:
        constraints:
          - node.role == manager
      labels:
        - 'traefik.enable=true'
        - 'traefik.tags=public'
        - 'traefik.docker.network=traefik-public'
        - 'traefik.http.routers.traefik-http.rule=Host(`traefik.sub.domain.org`)'
        - 'traefik.http.routers.traefik-http.entrypoints=web'
        - 'traefik.http.routers.traefik-http.middlewares=traefik-redirect'
        - 'traefik.http.routers.traefik-https.rule=Host(`traefik.sub.domain.org`)'
        - 'traefik.http.routers.traefik-https.entrypoints=websecure'
        - 'traefik.http.routers.traefik-https.middlewares=traefik-auth'
        - 'traefik.http.routers.traefik-https.service=api@internal'
        - 'traefik.http.services.traefik-https.loadbalancer.server.port=8080'
        - 'traefik.http.routers.traefik-https.tls=true'
        - 'traefik.http.routers.traefik-https.tls.certResolver=letsencrypt'
        - 'traefik.http.routers.traefik-https.tls.domains[0].main=traefik.sub.domain.org'
        - 'traefik.http.middlewares.traefik-auth.basicauth.users=user:hashedpasword
        - 'traefik.http.middlewares.traefik-redirect.redirectscheme.scheme=https'
      restart_policy:
        condition: any
        delay: 5s
        max_attempts: 3
        window: 120s
      update_config:
        delay: 10s
        order: start-first
        parallelism: 1
      rollback_config:
        parallelism: 0
        order: stop-first
    logging:
      driver: json-file
      options:
        'max-size': '10m'
        'max-file': '5'
    networks:
      - traefik-public
      - default

networks:
  traefik-public:
    external: true

volumes:
  vol_traefik_certs:
    driver: local
    driver_opts:
      type: nfs
      o: addr=NASIP,nolock,soft,rw
      device: ":/docker/data/traefik2/certs/"
  vol_traefik_configs:
    driver: local
    driver_opts:
      type: nfs
      o: addr=NASIP,nolock,soft,rw
      device: ":/docker/data/traefik2/configs/"

Thank you!

2

My further research brought me to header rules and rewriting them:

would this be an option?
Would anyone know what header rule would be the one to use in this case?

https://docs.traefik.io/middlewares/headers/

3

Solved.

it was an ingress network issue.
Solved it like this:

docker swarm init
docker network rm ingress
docker network create -d overlay --subnet=11.0.0.0/16 --ingress --opt com.docker.network.driver.mtu=9216 --opt encrypted=true ingress