How To Install nss_db on CentOS 8

nss_db is Name Service Switch (NSS) module using hash-indexed files Name Service Switch (NSS) module using hash-indexed files

Introduction

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

What is nss_db

The nss_db Name Service Switch module uses hash-indexed files in /var/db to speed up user, group, service, host name, and other NSS-based lookups. nss_db 2.28 151.el8 x86_64 70 k glibc-2.28-151.el8.src.rpm baseos Name Service Switch (NSS) module using hash-indexed files http LGPLv2+ and LGPLv2+ with exceptions and GPLv2+ and GPLv2+ with exceptions and BSD and Inner-Net and ISC and Public Domain and GFDL The nss_db Name Service Switch module uses hash-indexed files in /var/db to speed up user, group, service, host name, and other NSS-based lookups.

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

Install nss_db 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 nss_db using dnf by running the following command:

sudo dnf -y install nss_db

Install nss_db 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 nss_db using yum by running the following command:

sudo yum -y install nss_db

How To Uninstall nss_db on CentOS 8

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

sudo dnf remove nss_db

nss_db Package Contents on CentOS 8

/lib/libnss_db-2.28.so
/lib/libnss_db.so.2
/usr/lib/.build-id
/usr/lib/.build-id/8e/92f31b8a2dc89c62f7f2c818ede5e654947688
/var/db/Makefile
/lib64/libnss_db-2.28.so
/lib64/libnss_db.so.2
/usr/lib/.build-id
/usr/lib/.build-id/91/dc682f4d25363501f45265fa52d0f83392269a
/var/db/Makefile

References

Summary

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