How To Install mod_md on CentOS 8

mod_md is Certificate provisioning using ACME for the Apache HTTP Server

Introduction

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

What is mod_md

This module manages common properties of domains for one or more virtual hosts. Specifically it can use the ACME protocol to automate certificate provisioning. Certificates will be configured for managed domains and their virtual hosts automatically, including at renewal.

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

Install mod_md 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 mod_md using dnf by running the following command:

sudo dnf -y install mod_md

Install mod_md 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 mod_md using yum by running the following command:

sudo yum -y install mod_md

How To Uninstall mod_md on CentOS 8

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

sudo dnf remove mod_md

mod_md Package Contents on CentOS 8

/etc/httpd/conf.modules.d/01-md.conf
/usr/bin/a2md
/usr/lib/.build-id
/usr/lib/.build-id/18
/usr/lib/.build-id/18/ee84011afa353424f327b845fa7680da88390a
/usr/lib/.build-id/66
/usr/lib/.build-id/66/49e0a2760adce93ca3416f4fcb0518bb506846
/usr/lib64/httpd/modules/mod_md.so
/usr/share/doc/mod_md
/usr/share/doc/mod_md/AUTHORS
/usr/share/doc/mod_md/ChangeLog
/usr/share/doc/mod_md/README.md
/usr/share/licenses/mod_md
/usr/share/licenses/mod_md/LICENSE
/usr/share/man/man1/a2md.1.gz

References

Summary

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