Centos creates a user group for MySQL

1. Create a centos MySQL user group

[Root @ localhost ~] # Grep MySQL/etc/group

# QuerySystemMySQL user group. If no user group exists, add it.

[Root @ localhost ~] # Groupadd MySQL

# Add a user group named MySQL

2. Create a centos MySQL user

[Root @ localhost ~] # Grep MySQL/etc/passwd

# QuerySystemIf there is a user named MySql in, add it if there is no such user.

[Root @ localhost ~] # Useradd mysql-G mysql-m-S/sbin/nologin

# Add a user named centos MySQL.

-G: Specifies the user group to which the new user belongs)

-M: do not create a root directory

-S: defines the shell it uses./sbin/nologin indicates that the user cannot log on.System.

I have explained MySQL compilation and installation before, so the installation steps are omitted here.