# How to manage multiple ports exposed on port 80 with docker? **URL:** \ **Category:** Traefik v2\ **Tags:** docker\ **Created:** [September 21, 2019, 5:42pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782 "2019-09-21T17:42:40Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![thiloilg](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/thiloilg/32/723_2.png) [@thiloilg](https://community.traefik.io/u/thiloilg)\ **Post date:** [September 21, 2019, 5:42pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/1 "2019-09-21T17:42:40Z")
I have the following setup: ```auto version: '3' services: traefik: image: traefik:v2.0 container_name: traefik ports: - 80:80 command: - --api.debug=true - --api.insecure=true - --providers.docker=true - --entrypoints.web.address=:80 - --providers.docker.exposedByDefault=true volumes: - /var/run/docker.sock:/var/run/docker.sock labels: - traefik.http.routers.traefik.service=api@internal - traefik.http.routers.traefik.rule=Host(`monitor.domain.org`) - traefik.http.routers.traefik.entrypoints=web networks: - web db: image: registry.domain.com/repo/db:latest container_name: db restart: always networks: - internal api: image: registry.domain.com/repo/api:latest container_name: api ports: - 80:3001 volumes: - /root/rsa.pem:/root/certs/rsa.pem - /root/rsa_pub.pem:/root/certs/rsa_pub.pem restart: always depends_on: - db environment: - MAIL_ADDRESS=${MAIL_ADDRESS} - MAIL_PASSWORD=${MAIL_PASSWORD} - MAIL_HOST=${MAIL_HOST} labels: - traefik.http.routers.api.rule=Host(`api.domain.org`) - traefik.http.routers.api.entrypoints=web networks: - internal - web app: image: registry.domain.com/repo/app:latest container_name: app restart: always depends_on: - api - db labels: - traefik.http.routers.app.rule=Host(`domain.org`,`www.domain.org`) - traefik.http.routers.app.entrypoints=web networks: - web networks: web: external: true internal: external: false ``` Obviously I get an error from docker saying `Bind for 0.0.0.0:80 failed: port is already allocated`. Either exposing the `port 80` of the `traefik` service or the `api` service separately works perfectly. If I do not expose the `port 80` on those both services it does not work for both of them. The `app` service which runs on Nginx works without exposing `port 80` seamlessly. How can I make the `api` and `traefik` service both run together on `port 80`? Regards, Thilo ---
**Author:** ![ldez](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/ldez/32/5_2.png) [@ldez](https://community.traefik.io/u/ldez)\ **Post date:** [September 21, 2019, 6:05pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/2 "2019-09-21T18:05:53Z")
Hello, you don't need to expose the port of your service named `api`, you just need to define the port of the related service: `traefik.http.services..loadbalancer.server.port=` ```auto version: '3' services: traefik: image: traefik:v2.0 container_name: traefik ports: - 80:80 command: - --api=true - --providers.docker=true - --entrypoints.web.address=:80 - --providers.docker.exposedByDefault=true volumes: - /var/run/docker.sock:/var/run/docker.sock labels: - traefik.http.routers.traefik.service=api@internal - traefik.http.routers.traefik.rule=Host(`monitor.domain.org`) - traefik.http.routers.traefik.entrypoints=web networks: - web db: image: registry.domain.com/repo/db:latest container_name: db restart: always networks: - internal api: image: registry.domain.com/repo/api:latest container_name: api volumes: - /root/rsa.pem:/root/certs/rsa.pem - /root/rsa_pub.pem:/root/certs/rsa_pub.pem restart: always depends_on: - db environment: - MAIL_ADDRESS=${MAIL_ADDRESS} - MAIL_PASSWORD=${MAIL_PASSWORD} - MAIL_HOST=${MAIL_HOST} labels: - traefik.http.routers.api.rule=Host(`api.domain.org`) - traefik.http.routers.api.entrypoints=web - traefik.http.services.api.loadbalancer.server.port=3001 networks: - internal - web app: image: registry.domain.com/repo/app:latest container_name: app restart: always depends_on: - api - db labels: - traefik.http.routers.app.rule=Host(`domain.org`,`www.domain.org`) - traefik.http.routers.app.entrypoints=web networks: - web networks: web: external: true internal: external: false ``` ---
**Author:** ![thiloilg](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/thiloilg/32/723_2.png) [@thiloilg](https://community.traefik.io/u/thiloilg)\ **Post date:** [September 21, 2019, 6:36pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/3 "2019-09-21T18:36:19Z")
@ldez Thank you for your effort! I dont know why but this does not seam to work in my case. I am also wondering why there is a difference between the `app` service and the `api`. The app is Nginx and the api is a node container. Here is my repo: [https://gitlab.thiloilg.com/repo/blicc/blob/master/docker-compose.yml](https://gitlab.thiloilg.com/repo/blicc/blob/master/docker-compose.yml) The weird thing is when I expose `port 80` separately for each service it works perfectly. ---
**Author:** ![ldez](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/ldez/32/5_2.png) [@ldez](https://community.traefik.io/u/ldez)\ **Post date:** [September 21, 2019, 6:45pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/4 "2019-09-21T18:45:43Z")
I think your problem is related to your network configuration. `app` uses `web`. `api` uses `web` and `internal` So try to set the same network for all your containers or use the label `traefik.docker.network` [https://docs.traefik.io/v2.0/providers/docker/#traefikdockernetwork](https://docs.traefik.io/v2.0/providers/docker/#traefikdockernetwork) * * * Also: - remove `--api.debug=true` because that don't do what do you think: [https://docs.traefik.io/v2.0/operations/api/#debug](https://docs.traefik.io/v2.0/operations/api/#debug) - replace `- --api.insecure=true` by `- --api=true` ---
**Author:** ![thiloilg](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/thiloilg/32/723_2.png) [@thiloilg](https://community.traefik.io/u/thiloilg)\ **Post date:** [September 21, 2019, 7:12pm UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/5 "2019-09-21T19:12:44Z")
@ldez Yes I think you are right this is probably my network setup. So I tried to add the label `- traefik.docker.network=web` to the api to tell traefik that it should use this network instead of the internal but this does not seam to work. What am I doing wrong here? I probably should just use one network and use Traefik for securing the database. Is there any boilerplate with a Traefik docker compose setup I can take a look at? ---
**Author:** ![zespri](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/zespri/32/310_2.png) [@zespri](https://community.traefik.io/u/zespri)\ **Post date:** [September 23, 2019, 3:46am UTC](https://community.traefik.io/t/how-to-manage-multiple-ports-exposed-on-port-80-with-docker/1782/6 "2019-09-23T03:46:24Z")
There is an example in the documentation here: [https://docs.traefik.io/user-guides/docker-compose/basic-example/](https://docs.traefik.io/user-guides/docker-compose/basic-example/)