Step-by-step guides for building on Tricknowtech — deploying apps, connecting a domain, and wiring up an AI assistant.
Wildcard certificates can only be validated with an ACME DNS-01 challenge — this tutorial covers installing a Certbot DNS plugin, authorizing it to make DNS-01 updates to your zone, and issuing and renewing a wildcard certificate that covers both an apex domain and *.example.com.
Use Certbot's Subject Alternative Name support to issue one Let's Encrypt certificate that covers several unrelated domains, then serve them all from Nginx.
