A container exposes multiple ports

Traefik Traefik v2 (latest)
1

Hi,

My provider is Docker. I have a container (a LibreNMS container) that listen on multiple port including 514 and 8000. Traefik detects only the port 514, however I would like Traefik to route to the service with the port 8000 as well.

Screenshot_2020-07-23 Traefik
Screenshot_2020-07-23 Traefik1903×971 57.5 KB

The documentation specifies that I need to add the label traefik.http.services.<service_name>.loadbalancer.server.port however I cannot do and don't want to do it with my docker-compose. So, I tried to add it in the traefik.yml file with the entire configuration as show below:

## traefik.yml

# Docker configuration backend
providers:
  docker:
    defaultRule: "Host(`{{ trimPrefix `/` .Name }}.myexample.com`)"


# API and dashboard configuration
api:
  insecure: true

## Static configuration
entryPoints:
  web:
    address: ":80"

  websecure:
    address: ":443"


http:
  routers:
    rule: "Host(`librenms-librenms-docker.myexample.com`"
    entryPoints: [web,websecure]
    
  services:
    librenms-librenms-docker@docker:
      loadBalancer:
        servers:
          - url: "http://172.20.0.7:8000"

Unfortunately, even if I force the service to http://172.20.0.7:8000 - where 172.20.0.7 is the container IP - I cannot have it working and receive a "Gateway Timeout" message. Do you have any advice? All other posts include the docker-compose label which is not what I'm looking for to achieve.

Thank you.