Difference between certbot and certbot-auto
https://stackoverflow.com/questions/53337530/difference-between-certbot-and-certbot-auto
から
IMPORTANT: What you need to know about TLS-SNI validation issues
https://community.letsencrypt.org/t/important-what-you-need-to-know-about-tls-sni-validation-issues/50811
If you use Certbot in its automatic Nginx or Apache modes, you need to upgrade to version 0.21 2.4k in order to issue certificates for new domain names.
If you use the certbot or letsencrypt command, you are using packages provided by your operating system vendor, which are often slow to update.
If this is the case, you should probably switch to certbot-auto 2.3k, which provides the latest version of Certbot on a variety of operating systems.
を確認すると、cerbot-auto を使うべきかな?