Setting Up Let's Encrypt SSL Certificates

Setting Up Let's Encrypt SSL Certificates

Let's Encrypt provides free, trusted SSL certificates. Certbot automates the process of obtaining and renewing them.

Prerequisites

  • A domain name pointed to your server's IP address
  • Ports 80 and 443 open in your firewall

Install Certbot for Nginx

apt install certbot python3-certbot-nginx -y

Obtain a Certificate (Nginx)

certbot --nginx -d yourdomain.com -d www.yourdomain.com

Install Certbot for Apache

apt install certbot python3-certbot-apache -y
certbot --apache -d yourdomain.com

Standalone Mode (No Web Server Running)

certbot certonly --standalone -d yourdomain.com

Test Auto-Renewal

certbot renew --dry-run

Certbot automatically installs a cron job to renew certificates before they expire (certificates are valid for 90 days).

Manual Renewal

certbot renew

View Installed Certificates

certbot certificates
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