1.安装mysql源：
rpm -ivh mysql-community-release-el7-5.noarch.rpm
2.安装mysql服务
yum -y install mysql-server
3.设置开启启动，启动mysql服务：
systemctl enable mysqld.service
systemctl start mysqld.service
查看mysql运行状态：systemctl status mysqld.service
mysql_secure_installation 初始化数据库
4.设置root密码，配置远程连接访问权限：
a.进入mysql： mysql -uroot
b.设置root密码：set password = password(‘XXX‘)
c.设置远程连接访问:
grant all privileges on *.* to ‘root‘@‘localhost‘ identified by ‘xxx‘ with grant option;
grant all privileges on *.* to ‘root‘@‘%‘ identified by ‘xxx‘ with grant option;
grant all privileges on *.* to ‘root‘@‘127.0.0.1‘ identified by ‘xxx‘ with grant option;
flush privileges;
exit;
配置成功。
centos7 mysql数据库安装指南
原文：https://www.cnblogs.com/sausage/p/10351033.html
