In this tutorial we will show you how to install free ssl certificate on Debian 10 Buster. For those of you who didn’t know, Let’s Encrypt is a free open certificate authority (CA) that provides free certificates for websites and other services. The service, which is backed by the Electronic Frontier Foundation, Mozilla, Cisco Systems, and Akamai.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation free ssl certificate on a Debian 10 (Buster) server.
Install Free SSL Certificate for Nginx on Debian 10
Step 1. Before we install any software, it’s important to make sure your system is up to date by running these following apt commands in the terminal:
apt update apt upgrade
Step 2. Installing Certbot on Debian 10.
Run following command to install Certbot:
sudo apt install certbot python-certbot-nginx
Next, run this command to get a certificate and have Certbot edit your Nginx web server:
sudo certbot --nginx
If you’re feeling more conservative and would like to make the changes to your Nginx configuration by hand, run this command:
sudo certbot certonly --nginx
Step 3. Certbot Auto Renew.
Free ssl certificates will get expired after 90 Days of installation and you must renew it before it get expired. If you have installed certificates using certbot then it must have already created cronjob to auto renew certificates:
sudo certbot renew --dry-run
The command to renew certbot is installed in one of the following locations:
/etc/crontab/ /etc/cron.*/* systemctl list-timers
Step 4. Confirm that Certbot worked .
You should test your configuration at:
Congratulation’s! You have successfully installed free ssl. Thanks for using this tutorial for installing free ssl certificate on Debian 10 Buster system. For additional help or useful information, we recommend you to check the official Let’s Encrypt website.