Http2 with http and tcp routers

Traefik Traefik v2
1

Hello there!

I'm currently trying to chain multiple traefik instances. The primary traefik (open to the internet) has some http routers with filters for Host-Headers, as well as a tcp router acting as a fallback forwarding everything to a second traefik instance running in kubernetes.

While testing my browser insists the whoami-service I'm trying to reach on k8s returns a 404, while curl shows a 200. This happens because I have another tab open in my browser accessing the traefik dashboard on traefik.somedomain.com using http2. The request for whoami.somedomain.com reuses that open connection due to the same_site property.

Is that property configurable? Do I have to disable http2 completely, or is that a bug?

Labels for the traefik container (Version 2.8.8):

      - "traefik.enable=true"
      - "traefik.http.routers.dashboard.rule=Host(`traefik.somedomain.com`)"
      - "traefik.http.routers.dashboard.service=api@internal"
      - "traefik.http.routers.dashboard.entrypoints=secure"
      - "traefik.http.services.dashboard.loadbalancer.server.port=80"
      - "traefik.http.routers.dashboard.tls=true"

Static config for fallback:

tcp:
  routers:
    catchall:
      entryPoints:
        - secure
      service: catchall
      rule: HostSNI(`*`)
      priority: 1
      tls:
        passthrough: true

  services:
    catchall:
      loadBalancer:
        servers:
          - address: 192.168.27.19:443

Any ideas?

2

Why use an old Traefik version?

3

Devs don't publish container tags for major versions and I didn't check for that, so it was pinned to 2.8.

Anyways, same issue with 2.10.7...