To Install and secure MySQL in RedHat 8.5

Introduction

mysql_secure_installation is a shell script that enables a secure MySQL server installation on Unix systems. The script configures security settings and allows to: Set a password for root accounts.

Step 1: Check the installed version OS by using the below command

[root@linuxhelp ~]# cat /etc/os-release 
NAME="Red Hat Enterprise Linux"
VERSION="8.5 (Ootpa)"

Step 2: Install MySQL Server by using the below command

[root@linuxhelp ~]# yum install mysql-server*
Updating Subscription Management repositories.

AppStream                                       254 MB/s | 7.2 MB     00:00    
BaseOS                                          122 MB/s | 2.4 MB     00:00    
Dependencies resolved.
================================================================================
Package                  Arch   Version                                Repo
                                                                          Size
================================================================================



Installing:

mysql-server             x86_64 8.0.26-1.module+el8.4.0+12359+b8928c02 1  25 M
Installing dependencies:
mariadb-connector-c-config
Is this ok [y/N]: y
Downloading Packages:
(1/7): mariadb-connector-c-config-3.1.11-2.el8_ 363 kB/s |  15 kB     00:00    
(7/7): protobuf-lite-3.5.0-13.el8.x86_64.rpm     15 MB/s | 149 kB     00:00    
--------------------------------------------------------------------------------
Total                                           189 MB/s |  38 MB     00:00     

Complete!

Step 3: Enable MySQL services by using the below command

 [root@linuxhelp ~]# systemctl enable mysqld

Created symlink /etc/systemd/system/multi-user.target.wants/mysqld.service → /usr/lib/systemd/system/mysqld.service.

Step 4: Start MySQL services by using the below command

[root@linuxhelp ~]# systemctl start mysqld

 [root@linuxhelp ~]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8

mysql> \q
Bye

 [root@linuxhelp ~]# mysql_secure_installation 

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

Press y|Y for Yes, any other key for No: y
Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 2
Please set the password for root here.

New password: 

Re-enter new password: 

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
All done! 

 [root@linuxhelp ~]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>\q