MySQL-client-5.6.33-1.el6.x86_64.rpm
MySQL-devel-5.6.33-1.el6.x86_64.rpm
MySQL-server-5.6.33-1.el6.x86_64.rpm

rpm -qa|grep -i mysql
mysql-libs-5.1.66-2.el6_3.x86_64
yum -y remove mysql-libs*

rpm -ivh MySQL-client-5.6.33-1.el6.x86_64.rpm
rpm -ivh MySQL-devel-5.6.33-1.el6.x86_64.rpm
rpm -ivh MySQL-server-5.6.33-1.el6.x86_64.rpm
cp /usr/share/mysql/my-default.cnf /etc/my.cn

/usr/bin/mysql_install_db
service mysql start
cat /root/.mysql_secret
mysql -uroot -p初始密码
set PASSWORD=PASSWORD('123456')；
exit

mysql -uroot -p123456
use mysql;
update user set password=password('123456') where user='root';
update user set host='%' where user='root' and host='localhost';
flush privileges;
exit

chkconfig mysql on

vim /etc/my.cnf
[mysqld]
port = 3306
default-storage-engine = InnoDB 
lower_case_table_names = 1 
max-connections=3000
character_set_server=utf8
[mysql] 
default-character-set=utf8