#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 repolist all | grep mysql

# yum install mysql-community-server -y

# chkconfig --list | grep mysqld
# chkconfig mysqld on

# service mysqld start

# mysql_secure_installation

# mysql -uroot -p 

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '你设置的密码' WITH GRANT OPTION;
mysql> flush privileges;

mysql> show variables like 'character%';

# vi /etc/my.cnf

[mysqld]
character-set-server=utf8 
collation-server=utf8_general_ci

[mysql]
default-character-set = utf8

[mysql.server]
default-character-set = utf8


[mysqld_safe]
default-character-set = utf8


[client]
default-character-set = utf8

# service mysqld restart

# mysql -uroot -p
mysql> show variables like 'character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

export PATH=$PATH:/usr/local/mysql//bin<br>source /etc/profile