PiHole behind Traefik

Help docker
1

Hi,
I'm currently trying to integrate pihole in a project with some other services behind the Reverse Proxy TRAEFIK in docker, for this project I'm using a simple free DNS domain taken from DuckDNS, so I can't really create subdomains.

I would like to know if it is possible (and if someone succeed) to access pihole dashboard with a subfolder like my.domain/pihole/admin rather than the classic subdomain like pihole.my.domain/admin.

I try with pathprefix, pathprefixstrip and path in the labels section of my docker-compose but did not succeed yet. For other services like traefik dashboard or portainer it works without problem.

Thanks for your answers.

2

The web interface does not (yet) support proxying in this way. Wait until the new web interface and API are released: GitHub - pi-hole/web: Pi-hole Web Interface for viewing stats and managing your Pi-hole

1 Like
3

Has this changed in the last few years - is this supported now?

(I tried using pathprefix and it didn't work, but maybe there's some other configuration option?)

If not, where should I file a feature request? The repo linked in the previous answer doesn't exist anymore.

4

What do you have for your Traefik dynamic configuration?

5

Hey,

I haven't tried it myself yet with Pihole, but something like this should work (here for /admin; you might want to do the same for other locations) :

labels:
  - "traefik.enable=true"
  - "traefik.http.routers.piholeweb.entrypoints=web"
  - "traefik.http.routers.piholeweb.rule=PathPrefix(`/admin/`)"
  - "traefik.http.middlewares.piholeweb-stripprefix.stripprefix.prefixes=/admin"
  - "traefik.http.routers.piholeweb.middlewares=piholeweb-stripprefix"
  - "traefik.http.services.piholeweb.loadbalancer.server.port=80"

Disclaimer : I'm not very familiar with lighttpd. It seems backend location is '/', which point to website hosted on /var/www/html, so ^/admin/.* queries should match this traefik rule, and then /admin prefix is stripped, so you end up on this (existing) location : '/'.

If you don't strip prefix, you end up in this lighttpd rule :

# If the URL starts with /admin, it is the Web interface
$HTTP["url"] =~ "^/admin/" {
    # Create a response header for debugging using curl -I
    setenv.add-response-header = (
        "X-Pi-hole" => "The Pi-hole Web interface is working!",
        "X-Frame-Options" => "DENY"
    )
}

Which is tricky, for it always return a 200/HTTP and doesn't send you anywhere on itself.

Have a go and tell us if it worked ! :slight_smile:

1 Like
6

So, I did that this morning. Deployed a traefik container in front of my pihole+dhcp-helper stack, and it works. Though without having to strip prefix. I'm not sure why, but redirection occurs nonetheless.

Just to clear any confusion, you'll find my stacks configs here : Pihole + dhcp-helper docker stack with traefik on side (http trafic only) · GitHub

Hope it helps !

7

That serves it on /admin - I wanted to serve it on a different path, e.g. /pihole. I got that working with:

labels:
  - "traefik.enable=true"
  - "traefik.http.services.pihole.loadbalancer.server.port=80"
  - "traefik.http.routers.pihole.entrypoints=web"
  - "traefik.http.routers.pihole.rule=PathPrefix(`/pihole/`)"
  - "traefik.http.middlewares.pihole.replacepathregex.regex=^/pihole/(.*)"
  - "traefik.http.middlewares.pihole.replacepathregex.replacement=/admin/$$1"
  - "traefik.http.routers.pihole.middlewares=pihole"

Thanks!

1 Like