How To Install mkrdns on CentOS 8

mkrdns is Automatic reverse DNS zone generator

Introduction

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

What is mkrdns

mkrdns automates the tedious procedure of editing both forward and reverse zones when making changes to your zones with likely no changes to your current configuration file. mkrdns does this by reading through all of the primary/secondary (master/slave) zones in your configuration file (either named.boot or named.conf). It will then automatically generate the reverse zone entries (IN PTR) for the networks for which you are the primary/master. It is now possible to simply edit the forward map, run mkrdns, and reload the zone. Clean, simple, and best of all, automatic. mkrdns also acts as a limited lint-like program, issuing warnings and errors if there are problems with your configuration or zone files.

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

Install mkrdns 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 mkrdns using dnf by running the following command:

sudo dnf -y install mkrdns

Install mkrdns 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 mkrdns using yum by running the following command:

sudo yum -y install mkrdns

How To Uninstall mkrdns on CentOS 8

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

sudo dnf remove mkrdns

mkrdns Package Contents on CentOS 8

/usr/bin/mkrdns
/usr/share/doc/mkrdns
/usr/share/doc/mkrdns/README.md
/usr/share/licenses/mkrdns
/usr/share/licenses/mkrdns/LICENSE
/usr/share/man/man1/mkrdns.1.gz

References

Summary

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