yum install mysql5.6 in centos6

yum list installed | grep mysql

yum -y remove mysql-libs.x86_64

wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
rpm -ivh mysql-community-release-el6-5.noarch.rpm

yum install mysql-community-server -y
service mysqld start

mysql -u root;
use mysql;
update user set password=PASSWORD("这里输入root用户密码") where User='root';
flush privileges; 

chkconfig --list | grep mysqld
chkconfig mysqld on

mysql_secure_installation