MySQL-CentOS7上安装Mysql5.7

#安装
wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
yum -y install mysql57-community-release-el7-.noarch.rpm
yum install mysql-community-server

#获取临时密码
grep "password" /var/log/mysqld.log
#用临时密码登陆
mysql -uroot -p
#修改密码  默认的密码策略是 大小写字母数字特殊字符 至少8位
ALTER USER 'root'@'localhost' IDENTIFIED BY 'Xx+12345';