How to setup Apache FREE SSL Certificate installation with Let's Encrypt on CentOS 7

These instructions are usefull to set up a TLS/SSL certificate from Let’s Encrypt on a CentOS 7 server running Apache as a web server.

# Install Epel Repository
yum install epel-release

 Download the Let’s Encrypt Client

git clone https://github.com/letsencrypt/letsencrypt /opt/letsencryptù

Set Up the SSL Certificate

cd /opt/letsencrypt

Install a single certificate that is valid for multiple domains or subdomains

./letsencrypt-auto --apache -d website.com -d www.website.com

Set Up Auto Renewal

Let’s Encrypt certificates are valid for 90 days, but it’s recommended that you renew the certificates every 60 days. Let's Encrypt client has a renew command that automatically checks the currently installed certificates and tries to renew them if they are less than 30 days away from the expiration date.

./letsencrypt-auto renew

Create a cron job that will periodically execute the automatic renewal command.

To update the Let’s Encrypt Client

• cd /opt/letsencrypt
• git pull