Proxy pass from my host to my application

[danbailo]

Hello,

I'm stucked with a simple config(I mean) about proxy pass with Traefik. In case, I want to proxy all requests in my host to my application.

What I want to do it's similiar with this in Nginx:

server{
       server_name example; 
       location / {
           proxy_pass http://127.0.0.1:8001;
       }
}

In this case I'm using this simple config and getting 404 from traefik.

docker-compose.yaml

services:
  traefik:
    image: traefik:v2.10.1
    command:
      - "--entrypoints.web.address=:80"
      - "--entrypoints.web.http.address=:80"
      - "--api.insecure=true"
      - "--log.level=DEBUG"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
    ports:
      - "80:80"
      - "8080:8080"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro

  myapp:
    build:
      context: ./myapp/
      dockerfile: Dockerfile
    depends_on:
      - traefik
    ports:
      - "8001:8001"
    command: bash -c "
      uvicorn main:app --reload --workers 1 --host 0.0.0.0 --port 8001"
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.myapp.rule=Host(`myapp.localhost`)"

In the example above, I'm running an application and exposing the port 8001, so, I would to access my server(an IP or domain) and expected that traefik pass the request to my internal container(myapp), running in http://127.0.0.1:8001 inside my server.

What I need to do?

[bluepuma77]

It is best practice to put Traefik and your target app on a Docker network. No need to expose ports, which could be used to circumvent added security by Traefik. Explicitly tell Traefik the target port. See simple Traefik example.

[danbailo]

I just add the loadbalancer service.

    labels:
      - "traefik.http.services.myapp-loadbalander.loadbalancer.server.port=8001"
      - "traefik.http.routers.myapp.service=ares-loadbalander"