How To Install certbot on CentOS 8

certbot is A free, automated certificate authority client

Introduction

In this tutorial we learn how to install certbot on CentOS 8.

What is certbot

certbot is a free, automated certificate authority that aims to lower the barriers to entry for encrypting all HTTP traffic on the internet.

We can use yum or dnf to install certbot on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install certbot.

Install certbot on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install certbot using dnf by running the following command:

sudo dnf -y install certbot

Install certbot on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install certbot using yum by running the following command:

sudo yum -y install certbot

How To Uninstall certbot on CentOS 8

To uninstall only the certbot package we can use the following command:

sudo dnf remove certbot

certbot Package Contents on CentOS 8

/etc/letsencrypt
/etc/sysconfig/certbot
/usr/bin/certbot
/usr/bin/letsencrypt
/usr/lib/systemd/system/certbot-renew.service
/usr/lib/systemd/system/certbot-renew.timer
/usr/share/doc/certbot
/usr/share/doc/certbot/CHANGELOG.md
/usr/share/doc/certbot/README.fedora
/usr/share/doc/certbot/README.rst
/usr/share/licenses/certbot
/usr/share/licenses/certbot/LICENSE.txt
/var/lib/letsencrypt
/var/log

References

Summary

In this tutorial we learn how to install certbot on CentOS 8 using yum and dnf.