1、wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm // 下载mysql yum源

2、rpm -ivh mysql57-community-release-el7-11.noarch.rpm // 安装yum源

3、yum install mysql-community-server  //安装Mysql—Server
4、service mysqld start    //启动Mysql

5、grep 'temporary password' /var/log/mysqld.log  //获取mysql临时密码

6、mysql -u root -p     //登录MYSQL

7、输入临时密码

8、set global validate_password_policy=0;    //修改密码复杂度

9、 set global validate_password_length=1;    //修改密码长度

10、ALTER USER 'root'@'localhost' IDENTIFIED BY '密码';  //修改密码

11、GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '密码' WITH GRANT OPTION;    //开启远程访问

12、FLUSH PRIVILEGES;    //刷新立即生效

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