How To Install libnss-mysql on CentOS 7
Introduction
In this tutorial we learn how to install libnss-mysql on CentOS 7.
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 CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install libnss-mysql.
Install libnss-mysql on CentOS 7 Using yum
Update yum database with yum using the following command.
After updating yum database, We can install libnss-mysql using yum by running the following command:
Install libnss-mysql on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
After updating yum database, We can install libnss-mysql using dnf by running the following command:
How To Uninstall libnss-mysql on CentOS 7
To uninstall only the libnss-mysql package we can use the following command:
References
Summary
In this tutorial we learn how to install libnss-mysql on CentOS 7 using yum and dnf.