Traefik can't find container

[maantjemol]

Hi. I have deployed podify as a docker-compose stack on a debian VM that also runs traefik. When I try to add podify to traefik I can't access it and I get this error:

level=error msg="service \"podify\" error: unable to find the IP address for the container \"/podify-web-1\": the server is ignored" container=web-podify-a8771715d6a01c1a926b2f8f98800c4331a544dd620640bbec2068c5884818e4 providerName=docker

When I run docker inspect on the web container, it returns this: "IPAddress": "",
I'm new to Traefik, I think I messed something up in the config. My docker-compose.yml:

version: '3.4'

x-app-defaults: &app-defaults
  restart: always
  environment: &app-env
    URL_HOST: https://podify.maantjemol.com
    DATABASE_URL: postgres://podify:verysecurepassword@db/podify
    REDIS_URL: redis://redis
    SECRET_KEY_BASE: SECRET
    RAILS_LOG_TO_STDOUT: "yes"
    STORAGE_DIR: /storage
    INITIAL_USER_EMAIL: example@gmail.com
    INITIAL_USER_PASSWORD: verysecurepassword
    ENABLE_SIGNUP: "no"

  volumes:
    - storage:/storage

  depends_on:
    - db
    - redis

services:
  web:
    <<: *app-defaults
    image: maxhollmann/podify:latest
    command: start-server
    ports:
      - 3010:3000
    networks:
      - proxy 
    environment:
      <<: *app-env

    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.podify.entrypoints=https"
      - "traefik.http.routers.podify.rule=Host(`podify.maantjemol.com`)"
      - "traefik.http.middlewares.podify-https-redirect.redirectscheme.scheme=https"
      - "traefik.http.routers.podify.middlewares=podify-https-redirect"
      - "traefik.http.routers.podify-secure.entrypoints=https"
      - "traefik.http.routers.podify-secure.rule=Host(`podify.maantjemol.com`)"
      - "traefik.http.routers.podify-secure.tls=true"
      - "traefik.http.routers.podify-secure.service=podify"
      - "traefik.http.services.podify.loadbalancer.server.port=3000"
      - "traefik.http.routers.podify.middlewares=sslheader@docker"
      - "traefik.http.middlewares.sslheader.headers.customrequestheaders.X-Forwarded-Proto=https"
      - "traefik.docker.network=proxy"
  
  worker:
    <<: *app-defaults
    image: maxhollmann/podify:latest
    command: start-worker
    environment:
      <<: *app-env

  db:
    image: postgres:12.3
    restart: always
    environment:
      POSTGRES_USER: podify
      POSTGRES_PASSWORD: verysecurepassword
      PGDATA: /var/lib/postgresql/data/pgdata
    volumes:
      - pgdata:/var/lib/postgresql/data/pgdata

  redis:
    image: redis:6
    restart: always

volumes:
  pgdata:
  storage:

networks:
  proxy:
    external: true

[maxhollmann]

Hm, sounds more like an issue with traefik or docker than with podify. Could your traefik docker-compose.yml as well?

[maantjemol]

Yes! Here it is:

version: "3"

services:
  traefik:
    image: traefik:latest
    container_name: traefik
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    networks:
      - proxy
    ports:
      - 80:80
      - 443:443
    environment:
      - CF_API_EMAIL=SECRET
      - CF_API_KEY=SECRET
      # be sure to use the correct one depending on if you are using a token or key
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - /root/traefik/data/traefik.yml:/traefik.yml:ro
      - /root/traefik/data/acme.json:/acme.json
      - /root/traefik/data/config.yml:/config.yml:ro
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.traefik.entrypoints=http"
      - "traefik.http.routers.traefik.rule=Host(`traefik-dashboard.local.maantjemol.com`)"
      - "traefik.http.middlewares.traefik-auth.basicauth.users=SECRET"
      - "traefik.http.middlewares.traefik-https-redirect.redirectscheme.scheme=https"
      - "traefik.http.middlewares.sslheader.headers.customrequestheaders.X-Forwarded-Proto=https"
      - "traefik.http.routers.traefik.middlewares=traefik-https-redirect"
      - "traefik.http.routers.traefik-secure.entrypoints=https"
      - "traefik.http.routers.traefik-secure.rule=Host(`traefik-dashboard.local.maantjemol.com`)"
      - "traefik.http.routers.traefik-secure.middlewares=traefik-auth"
      - "traefik.http.routers.traefik-secure.tls=true"
      - "traefik.http.routers.traefik-secure.tls.certresolver=cloudflare"
      - "traefik.http.routers.traefik-secure.tls.domains[0].main=local.maantjemol.com"
      - "traefik.http.routers.traefik-secure.tls.domains[0].sans=*.local.maantjemol.com"
      - "traefik.http.routers.traefik-secure.service=api@internal"

networks:
  proxy:
    external: true

[maxhollmann]

One thing I notice is that the web container keeps crashing because it can't connect to the DB & redis, as they're on different networks. Is it running fine for you? Do you get anything if you go directly to port 3010 on your server?

[maantjemol]

I was indeed the different networks that caused the problem! I put the db and Redis on the same network and it works perfectly. Thank you, I use podify daily and was just setting it up again with traefik, but this solved it :)