1. 查看mysql的安装包
#rpm -qa|grep mysql
2. 卸载mysql
#yum remove mysql
3. 下载
https://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
4. 安装
#yum localinstall mysql-community-release-el6-5.noarch.rpm
#yum install mysql-server
5. 启#service mysqld start. 登录
#mysql -uroot
7. 修改root密码
set password for root@localhost = password('123456');
8. 远程连接授权
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;