How To Install libnss-mysql on Rocky Linux 8

In this tutorial we learn how to install libnss-mysql on Rocky Linux 8. libnss-mysql is NSS library for MySQL

Introduction

In this tutorial we learn how to install libnss-mysql on Rocky Linux 8.

What is `libnss-mysql`

Store your UNIX user accounts in MySQL. “libnss-mysql” enables the following * System-wide authentication and name service using a MySQL database. Applications do not need to be MySQL-aware or modified in any way. * Storing authentication information in a database instead of text files. * Creation of a single authentication database for multiple servers. This is often referred to as the “Single Sign-on” problem. * Writing data-modification routines (IE self-management web interface). libnss-mysql is similar to NIS or LDAP. It provides the same centralized authentication service through a database. What does this mean? Username, uid, gid, password, etc comes from a MySQL database instead of /etc/password, /etc/shadow, and /etc/group. A user configured in MySQL will look and behave just like a user configured in /etc/passwd. Your applications such as ls, finger, sendmail, qmail, exim, postfix, proftpd, X, sshd, etc. will all ‘see’ these users!

We can use yum or dnf to install libnss-mysql on Rocky Linux 8. In this tutorial we discuss both methods but you only need to choose one of method to install libnss-mysql.

Install libnss-mysql on Rocky Linux 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

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

sudo dnf -y install libnss-mysql

Install libnss-mysql on Rocky Linux 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

After updating yum database, We can install libnss-mysql using yum by running the following command:

sudo yum -y install libnss-mysql

How To Uninstall libnss-mysql on Rocky Linux 8

To uninstall only the libnss-mysql package we can use the following command:

sudo dnf remove libnss-mysql

libnss-mysql Package Contents on Rocky Linux 8

/etc/libnss-mysql-root.cfg
/etc/libnss-mysql.cfg
/usr/lib/.build-id
/usr/lib/.build-id/7e
/usr/lib/.build-id/7e/63c5d47d8cd0baff8a77389fd8b9643009deef
/usr/lib64/libnss_mysql.so.2
/usr/lib64/libnss_mysql.so.2.0.0
/usr/share/doc/libnss-mysql
/usr/share/doc/libnss-mysql/AUTHORS
/usr/share/doc/libnss-mysql/COPYING
/usr/share/doc/libnss-mysql/ChangeLog
/usr/share/doc/libnss-mysql/DEBUGGING
/usr/share/doc/libnss-mysql/FAQ
/usr/share/doc/libnss-mysql/NEWS
/usr/share/doc/libnss-mysql/README
/usr/share/doc/libnss-mysql/THANKS
/usr/share/doc/libnss-mysql/TODO
/usr/share/doc/libnss-mysql/UPGRADING
/usr/share/doc/libnss-mysql/sample
/usr/share/doc/libnss-mysql/sample/README
/usr/share/doc/libnss-mysql/sample/complex
/usr/share/doc/libnss-mysql/sample/complex/libnss-mysql-root.cfg
/usr/share/doc/libnss-mysql/sample/complex/libnss-mysql.cfg
/usr/share/doc/libnss-mysql/sample/complex/sample_database.sql
/usr/share/doc/libnss-mysql/sample/linux
/usr/share/doc/libnss-mysql/sample/linux/libnss-mysql-root.cfg
/usr/share/doc/libnss-mysql/sample/linux/libnss-mysql.cfg
/usr/share/doc/libnss-mysql/sample/linux/sample_database.sql
/usr/share/doc/libnss-mysql/sample/minimal
/usr/share/doc/libnss-mysql/sample/minimal/libnss-mysql-root.cfg
/usr/share/doc/libnss-mysql/sample/minimal/libnss-mysql.cfg
/usr/share/doc/libnss-mysql/sample/minimal/sample_database.sql

References

libnss-mysql website

Summary

In this tutorial we learn how to install libnss-mysql on Rocky Linux 8 using yum and dnf.