this post was submitted on 31 Jan 2024
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Issue with Traefik SSL and PiHole (lemmy.world)
submitted 9 months ago by WASTECH@lemmy.world to c/selfhosted@lemmy.world
6 comments fedilink hide all child comments
 

I set up SSL certificates for my internal services behind Traefik, but I was having some issues obtaining the certificates. I ended up having to add this line in my Docker compose file to bypass PiHole which is controlling the internal hostnames for my domain:

- --certificatesresolvers.letsencrypt.acme.dnschallenge.resolvers=1.1.1.1:53,1.0.0.1:53

After adding that, I was able to successfully pull a cert. The issue is, I have a firewall set up that blocks DNS requests from everywhere except my DNS servers (PiHole), so I had to pause that rule temporarily to get the request to go through.

Wondering what I can do here (if anything) to resolve this without having to disable my firewall rules regularly.

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[–] theit8514@lemmy.world 1 points 9 months ago (1 children)

I would start by testing if you can resolve acme-v02.api.letsencrypt.org from the PiHole and if not, see what you need to unblock that.

[–] theit8514@lemmy.world 1 points 9 months ago (1 children)
[–] WASTECH@lemmy.world 1 points 9 months ago

Did some more testing to get some details. The error I am getting from Traefik is that Cloudflare cannot create the record because it already exists (PiHole already has the entries). If I delete the records from PiHole, Traefik can then create the TXT records in Cloudflare.

[–] MangoPenguin@lemmy.blahaj.zone 1 points 9 months ago (1 children)

Create a new rule on the firewall to allow DNS requests to cloudflare from that host only.

[–] WASTECH@lemmy.world 1 points 9 months ago

That is what I ended up doing temporarily, but I think I will just make it temporarily permanent. I could likely set up another Docker container to run a DNS server connected to a DoH resolver, and use that container as the DNS server for Traefik, but that's a lot of work.

[–] Decronym@lemmy.decronym.xyz 0 points 9 months ago* (last edited 9 months ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters More Letters
DNS Domain Name Service/System
PiHole Network-wide ad-blocker (DNS sinkhole)
SSL Secure Sockets Layer, for transparent encryption

3 acronyms in this thread; the most compressed thread commented on today has 7 acronyms.

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