AdGuard Home Wildcard aliases

[lukas]

@girish this is set and I haven't change it. Just today changed the DNS Provider from Wildcard to Bunny

[lukas]

@girish so which steps do I need to go, to get this resolved?

Btw. I see there some "non-used" SSL certificates, is there any kind of "housekeeping" ?

[girish]

@lukas I am a bit lost at this point. Are you able contact me at support@cloudron.io , so I can debug your instance?

[lukas]

@girish sure, I give you access. I open a Ticket via Cloudron

[girish]

@lukas thanks! As a heads up, I will only be able to debug a bit later today.

[lukas]

@girish said in AdGuard Home Wildcard aliases:

@lukas thanks! As a heads up, I will only be able to debug a bit later today.

all right, thank you very much for your amazing support!

[girish]

@lukas Thanks for the access. I found the root cause. I (re)learnt about Let's Encrypts validation cache.

<tech stuff>

It's a very corner case but, unfortunately, it's hit in your situation.

• You used to have wildcard DNS before. This results in Let's Encrypt HTTP validation (http-01)
• You switched to Bunny DNS. The code now expects to do Let's Encrypt DNS validation (dns-01)
• Turns out , Let's Encrypt will "remember" authorization for 60 days (in some places, it says 30 days). So, it will continue to ask for HTTP validation . The code gets confused because is really wants DNS validation.

If you want to read more:

• https://community.letsencrypt.org/t/flush-of-authorization-cache/188043
• https://community.letsencrypt.org/t/let-s-encrypt-s-vulnerability-as-a-feature-authz-reuse-and-eternal-account-key/21687
• https://community.letsencrypt.org/t/http-01-validation-cache/22529

</tech stuff>

I fixed our code to handle this - https://git.cloudron.io/cloudron/box/-/commit/15e0f11bb9815f5e4e7637cf29cf4fd17ccd2da2 . I applied the fix on your server and it seems to work. Atleast, the certs are correct now and we can now go back to checking if AdGuard is working for you. Can you check?

[lukas]

@girish it works great now, can't thank you enough for your constant and professional support! Very happy to use Cloudron guys

[ByMynix]

Hey @girish,

I have the same problem now. I was a bit too stupid and first created a manual record in Porkbun which is logically not necessary and does not work. I have subsequently deleted this entry again. I tried via Cloudron (with Lets Encrypt Prod/ Wildcard and Porkbun DNS) to set an alias entry for AdGuard (*.adguard.mydomain.com). However, I get this error message:

GET /api/v1/domains/my.domain/dns_check?subdomain=*.adguard 424 Failed Dependency Porkbun DNS error 400 {} 770.306 ms - 76

I ran the DNS sync function in Cloudron, as well as renewed the certificates. However, nothing has helped

[girish]

@ByMynix Porkbun support never got back to us and we gave up trying after reminding them 2-3 times. Their API is broken wrt wildcards (well, atleast it's undocumented). I recommend using some other DNS provider if you want this feature.

[girish]

@ByMynix if you want to stick with Porkbun please email them and link https://forum.cloudron.io/post/64902 as the post reproducing the issue. You can also cc support@cloudron.io and we are happy to respond.