1. Change root user
sudo su
2. Install MySQL YUM repository
## CentOS 7 and Red Hat (RHEL) 7 ##
yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm
## CentOS 6 and Red Hat (RHEL) 6 ##
yum localinstall https://dev.mysql.com/get/mysql57-community-release-el6-9.noarch.rpm
## CentOS 5 and Red Hat (RHEL) 5 ##
yum localinstall https://dev.mysql.com/get/mysql57-community-release-el5-7.noarch.rpm
3. Update or Install MySQL 5.7.17
yum install mysql-community-server
4. Start MySQL server and autostart MySQL on boot
systemctl start mysqld.service ## use restart after update
systemctl enable mysqld.service
