安装wget，用于下载mysql包使用

yum install wget

下载mysql源

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

安装mysql

yum -y install mysql57-community-release-el7-10.noarch.rpm
yum module disable mysql
yum -y install mysql-community-server

启动mysql

systemctl start  mysqld.service

查看mysql默认密码

grep "password" /var/log/mysqld.log

访问mysql

mysql -uroot -p     # 回车后会提示输入密码，拷贝上一步看到的密码即可

修改mysql密码

ALTER USER 'root'@'localhost' IDENTIFIED BY 'Aa.123456';

设置mysql可以被其他机器链接

grant all on *.* to root@'%' identified by 'Aa.123456';

删除yum mysql源

yum -y remove mysql57-community-release-el7-10.noarch