this post was submitted on 16 Oct 2024
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You can delegate to isolated nameservers with DNS-01, there's no need to have control over the primary zone: https://www.eff.org/deeplinks/2018/02/technical-deep-dive-securing-automation-acme-dns-challenge-validation
Yes, and that is where we enter the complicated territories..
How complicated is it to have a CNAME? /s
Did we read the same article? DNS-01 challenges require updates to DNS. This means you need an API for your DNS. This means you now have to worry about DNS permissions in your application cert workflow. We’ve just massively increased blast radius! Or you could do it manually but that’s already failed.
All of this is straightforward with infrastructure-as-code. While I don’t struggle with that, I’ve watched devs and sysadmins both stare blankly at this kind of thing for days at a time.