Certbot on Centos7
Install EPEL-Repository first, then you can install certbot.
sudo yum install certbot
When using apache install the SSL Modul
yum -y install httpd mod_ssl python-certbot-apache
Certbot can be configured to renew your certificates automatically before they expire. Since Let’s Encrypt certificates last for 90 days, it’s highly advisable to take advantage of this feature. You can test automatic renewal for your certificates by running this command:
sudo certbot renew --dry-run
If that appears to be working correctly, you can arrange for automatic renewal by adding a cron or systemd job which runs the following:
More detailed information and options about renewal can be found in the full documentation.