Certbot

Certbot is a free, open-source software tool for automatically using Let's Encrypt certificates on manually-administrated websites to enable HTTPS.

When to Use

• Automated SSL/TLS Certificate Issuance: Provisioning free, trusted Let's Encrypt certificates for web servers.
• Automatic Certificate Renewal: Configuring cron or systemd timers to renew expiring certificates without downtime.
• Wildcard Certificate Provisioning: Generating wildcard certificates (*.example.com) via automated DNS-01 challenges.
• Web Server Configuration Automation: Automatically configuring HTTPS directives, ciphers, and redirects in Nginx and Apache.

Quick Start

sudo snap install --classic certbot
sudo ln -s /snap/bin/certbot /usr/bin/certbot