How To Install mod_lookup_identity on CentOS 8

mod_lookup_identity is Apache module to retrieve additional information about the authenticated user

Introduction

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

What is mod_lookup_identity

mod_lookup_identity can retrieve additional pieces of information about user authenticated in Apache httpd server and store these values in notes/environment variables to be consumed by web applications. Use of REMOTE_USER_* environment variables is recommended.

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

Install mod_lookup_identity 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_lookup_identity using dnf by running the following command:

sudo dnf -y install mod_lookup_identity

Install mod_lookup_identity 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_lookup_identity using yum by running the following command:

sudo yum -y install mod_lookup_identity

How To Uninstall mod_lookup_identity on CentOS 8

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

sudo dnf remove mod_lookup_identity

mod_lookup_identity Package Contents on CentOS 8

/etc/httpd/conf.d/lookup_identity.conf
/etc/httpd/conf.modules.d/55-lookup_identity.conf
/usr/lib/.build-id
/usr/lib/.build-id/28
/usr/lib/.build-id/28/05e3f5a0d2141992cc850955fdb167f6e39d41
/usr/lib64/httpd/modules/mod_lookup_identity.so
/usr/share/doc/mod_lookup_identity
/usr/share/doc/mod_lookup_identity/LICENSE
/usr/share/doc/mod_lookup_identity/README

References

Summary

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