wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

yum localinstall -y mysql57-community-release-el7-7.noarch.rpm

yum install -y mysql-community-server

systemctl start mysqld.service

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

mysql -uroot -p

SET PASSWORD = PASSWORD('YYBrhr_2018');
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
flush privileges;

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'YYBrhr_2018' WITH GRANT OPTION;

firewall-cmd --list-all 

firewall-cmd --permanent --add-port=3306/tcp

service firewalld restart

 firewall-cmd --query-port=3306/tcp

firewall-cmd --list-all