Redirect traffic by a SUBPATH to different containers

Traefik Traefik v2
,
1

Hello forum,

shortly some notice to the background of what I actually want to do:

  • I want to run a NextCloudPi server and a Gogs Git server behind a Fritz.Box on my Raspberry Pi.
  • Both are running in a Docker container.
  • Traefik should act as a reverse proxy.
  • Since I only use a DyDNS, I don't have the option to set up subdomains.
  • Therefore I am dependent on subdirectories.
  • The URL should then look something like this:
    https://huhu.spdns.de/gogs
    https://huhu.spdns.de/nxtcld

But I broke down my problem. I have found many examples but none of them really works for me.

Here is my Docker Compose File:

version: "3.3"

services:
  traefik_reverseproxy:
    container_name:  traefik_rp
    image:           traefik:v2.0
    command:
      -              --entrypoints.web.address=:80
      -              --entrypoints.websecure.address=:443
      -              --providers.docker
      -              --api.insecure
      -              --certificatesresolvers.leresolver.acme.caserver=https://acme-staging-v02.api.letsencrypt.org/directory
      -              --certificatesresolvers.leresolver.acme.email=you@example.com
      -              --certificatesresolvers.leresolver.acme.storage=/acme.json
      -              --certificatesresolvers.leresolver.acme.tlschallenge=true
    ports:
      -              8080:8080
      -               443:443
      -                80:80
    volumes:
      -              /var/run/docker.sock:/var/run/docker.sock
      -              ./acme.json:/acme.json
    networks:
      -              sh_trfk

  whoami:
    image:           containous/whoami
    labels:
      -              "traefik.frontend.rule=PathPrefixStrip:/whoami"
      -              "traefik.backend=whoami"
      -              "traefik.enable=true"
      -              "traefik.passHostHeader=true"
      -              "traefik.frontend.redirect.regex=^(.*)/whoami$$"
      -              "traefik.frontend.redirect.replacement=$$1/whoami/"
      -              "traefik.frontend.rule=PathPrefix:/whoami;ReplacePathRegex: ^/whoami/(.*) /$$1"
    networks:
      -              sh_trfk

  tomcat:
    container_name:  tom
    hostname:        tom
    build:           ./dockerfiles/tom
    ports:
      -              9081:80
    labels:
      -              "traefik.http.routers.tomcat.rule=PathPrefix(`/tom`)"
      -              "traefik.http.middlewares.theTomStrip.stripprefix.prefixes=/tom"
      -              "traefik.http.routers.tomcat.middlewares=theTomStrip"
    networks:
      -              sh_trfk


networks:
  sh_trfk:

The problem with the WHOAMI container is that it doesn't work at all, although I think it would be the more correct solution.

The problem with the TOM container is that although I reach TOMCAT here, the dynamic links from Tomcat are generated incorrectly:

  • https: // localhost / tom / examples becomes https: // localhost / examples

The reason for this is clear to me, because I cut the SubPath / tom out of the URL. But how do I solve the problem?

I'm really grateful for any information, since I've been dealing with the problem for almost two weeks now.

thank you
Andreas

2

Hi,
this is not an exact anwer for your question but maybe it can help you.

You are saying:

Since I only use a DyDNS, I don't have the option to set up subdomains.

You can use DynDNS and Subdomains - i'm using this exact szenario.

All you nedd is a Domain Provider wich allows you to modify the nameserver and a free DNS Service that can be used for traefik DNS-Challenge to generate Wildcard Certificates like "https://www.ovh.de/".