Armv6l (raspberry pi zero) and a wildcard subdomain

Using / manual setup. I'd like ssl certs on my raspberry pi zero running python (armv6l, so certbot doesn't run). I can do both file and dns verify for setting it up, but I want to do automatic renewal too...

But I run into this error: Wildcard domains can only be validated by dns mode. no other mode at all. you can not use --nginx or -w for wildcard domains.

I cannot do dns verify on automatic renewal.

My domain is: (but server is not always running)

My web server is (include version): nginx (1.18)

The operating system my web server runs on is (include version): Raspbian (buster)

My hosting provider, if applicable, is: NA

I can login to a root shell on my machine (yes or no, or I don't know): yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): yes, plesk

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): no certbot, because armv6l processor architecture.

Hi @kkoenen

that's not an error, that's a feature.

So there is no problem.

I mean, it's not exactly a feature in the sense of being useful or helpful to users, but it is a requirement of Let's Encrypt's policy.

@kkoenen, if you need automated renewal, you'll need to find a way to update DNS records from software. Certbot and can both call a script to help with this, as long as you have a script that can perform the updates. For both clients there are also certain DNS provider APIs that are also supported natively (more in's case than in Certbot's).

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I see! I will check if my domain hosting provider offers an api to alter the TXT DNS records. Thanks!

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