How to Install Let's Encrypt SSL with LEMP Stack on AlmaLinux 8

Let's Encrypt is a non-profit certificate authority run by Internet Security Research Group that provides X.509 certificates for Transport Layer Security encryption at no charge. In this article, we are going to learn how to install Let's Encrypt SSL on AlmaLinux 8. So, let’s get started.

Checkout the Let's Encrypt SSL Project Here.

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Pre-requisites :

  • A system with AlmaLinux 8 installed and running.

  • root access to the system.

  • LEMP Stack installed and running, for this, you can refer to one of our guides on installing the LEMP Stack (Nginx, MariaDB, and PHP).

Once you're all set, we'll proceed with Let's Encrypt SSL installation and configuration.

Install Let’s Encrypt SSL Certificate

Let's issue an SSL certificate for the domain. For this, we will need the EPEL repository and the mod_ssl package on AlmaLinux 8 operating system.

Update and install EPEL repository and the mod_ssl package on the system using the below command:

dnf install epel-release mod_ssl -y

Next, we will install the certbot client which is used to create Let's Encrypt certificates:

dnf install python3-certbot-nginx -y

Install SSL Certificate

Use the certbot command to issue a Let's Encrypt certificate. Replace dev1.domainhere.info and dev@dev1.domainhere.info with your domain name and email :

certbot --nginx --agree-tos --redirect --hsts --staple-ocsp --email dev@dev1.domainhere.info -d dev1.domainhere.info

SSL certificates are valid for 90 days. The renewal process is now automated, you do not have to renew this manually.

Enable Firewall:

firewall-cmd --permanent --add-service=http

firewall-cmd --permanent --add-service=https

firewall-cmd --reload

Restart Nginx

Restart apache to avoid getting error messages.

systemctl restart nginx

Now you have successfully installed Let's Encrypt SSL with LEMP Stack on AlmaLinux 8.