Certbot wildcard certificates with DNS-01
Issue a wildcard certificate with Certbot using the DNS challenge. How the TXT record proof works, which plugin to install, and how renewal stays automatic.
#lets-encrypt
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Install Certbot for Apache on Ubuntu 24.04
One command gives Apache a free Let's Encrypt cert on Ubuntu 24.04. Skip snap: apt ships Certbot 2.9.0. Plus the ServerName trap that blocks issuance.
Traefik reverse proxy: 5 apps, one Compose file
Run five apps behind one IP with Traefik v3 on Docker Compose: routing by Host rule, automatic Let's Encrypt TLS, and the acme.json trap that blocks startup.
Install Certbot for nginx on Ubuntu 24.04
sudo apt install certbot python3-certbot-nginx, then one certbot --nginx run for a Let's Encrypt cert. Plus apt vs snap and the port 80 renewal timeout.