Let's Encrypt (Certificate Authority) Reference

Kip Landergren

(Updated: )

Contents

certbot

Commands

sudo certbot certonly \
  --dns-google \
  --dry-run \
  -d example.com \
  -d '*.example.com'

Frequently Asked Questions (FAQs)

Where does certbot write files?

For debian:

Are certificates revoked when a new one is generated?

No. Certificates must be manually revoked.

Can I just delete the certificate files directly?

Prefer using certbot delete.

How are certificates renewed?

Via command certbot renew, typically added to /etc/crontab. Note: this will not show up when invoking crontab -l, which is for the current user.

Resources