Received a certificate renewal notification from Tencent Cloud, but
when applying for a new certificate, I found out that Tencent Cloud no
longer offers free one-year certificates:
Starting from April 25, 2024, the validity period of new free
certificates issued by Tencent Cloud will be adjusted to 90 days.
Since I’ve always updated certificates manually, doing it every three
months feels quite tedious. So, I decided to explore Certbot from Let's
Encrypt. My only concern was how to prove ownership of a subdomain.
After trying it out, I realized this wasn’t an issue at all, as Certbot
only issues certificates and doesn’t pose any threat to the website
itself.
Here are the configuration steps for Certbot. In fact, it’s very
simple and only requires running a few commands.