一、检查系统是否安装其他版本的MYSQL数据
yum list installed | grep mysql
yum -y remove mysql-libs.x86_64

二、安装及配置
wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
rpm -ivh mysql-community-release-el6-5.noarch.rpm
yum repolist all | grep mysql
1、安装MYSQL数据库
yum install mysql-community-server -y
2、设置为开机启动
chkconfig --list | grep mysqld
chkconfig mysqld on
3、设置密码
/usr/bin/mysqladmin -u root password '123456'
4、修改root密码
mysql -uroot -p123456