Red Hat Enterprise 8 and CentOS 8

Remove MySql default stream

# dnf remove @mysql
# dnf module reset mysql && sudo dnf module disable mysql

Create Repository File

Store content below into the file /etc/yum.repos.d/mysql-community.repo

[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=1
gpgcheck=0

[mysql-connectors-community]
name=MySQL Connectors Community
baseurl=http://repo.mysql.com/yum/mysql-connectors-community/el/7/$basearch/
enabled=1
gpgcheck=0

[mysql-tools-community]
name=MySQL Tools Community
baseurl=http://repo.mysql.com/yum/mysql-tools-community/el/7/$basearch/
enabled=1
gpgcheck=0

Enabling and Installing MySql-5.7

# dnf --enablerepo=mysql57-community install mysql-community-server

Starting MySql Service

# systemctl enable --now mysqld.service

Get the temporary password which was generated during installation:

$ grep 'A temporary password' /var/log/mysqld.log |tail -1

Example output:

2020-02-01T19:13:04.948097Z 1 [Note] A temporary password is generated for root@localhost: .tirhC%r:9kQ

Red Hat Enterprise 7 and CentOS 7

Removing unnecessary MariaDB packages

The Red Hat Enterprise and CentOS contain MariaDB packages which don't allow to install MySql thus is these packages must be removed before MySql can be installed.

# yum remove mariadb-libs

Adding MySql Repository

# yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

Installing MySql

# yum install mysql-community-server

Getting MySql started after Reboot

# systemctl enable mysqld

Starting MySql Service

# service mysqld start

Get the temporary password which was generated during installation:

# grep 'temporary password' /var/log/mysqld.log

Example output:

2019-05-09T11:32:13.037069Z 1 [Note] A temporary password is generated for root@localhost: o6Xqb+5r!JRu

Completing MySql Installation

To complete the installation, execute mysql_secure_installation script and follow the wizard. It will prompt for root password. Use the temporary root password.

# /usr/bin/mysql_secure_installation