下载
mysql-5.1.60-linux-x86_64-glibc23.tar.gz放到/home/a/soft/下
shell>sudo groupadd mysql 
shell>sudo useradd -r -g mysql mysql 
shell>cd /home/a/soft/ 
shell>tar zxvf 
mysql-5.1.60-linux-x86_64-glibc23.tar.gz
shell>cd /usr/local/ 
shell>sudo ln -s /home/a/soft/
mysql-5.1.60-linux-x86_64-glibc23 mysql 
shell> cd mysql 
shell>sudo chown -R mysql . 
shell>sudo chgrp -R mysql . 
shell>sudo scripts/mysql_install_db --user=mysql 
shell>sudo chown -R root . 
shell>sudo chown -R mysql data 
shell>sudo cp support-files/my-medium.cnf /etc/my.cnf 
#配置/etc/my.cnf
     ......
shell>sudo ./scripts/mysql_install_db --user=mysql
shell>sudo cp support-files/mysql.server /etc/init.d/mysql.server
$sudo service mysql.server start
$mysql -uroot -p
改变当前数据库为mysql：
mysql>use mysql
设置从本地主机登录的root帐号密码：
mysql>set password for root@localhost=password('root');
删除匿名帐号： 
mysql>delete from user where user='';
删除密码为空的帐号：
mysql>delete from user where password='';
删除允许非localhost主机登录的帐号：
mysql>delete from user where host<>'localhost';
执行下面的命令使更改生效：
mysql>flush privileges; 
mysql>update user set host = '%' where user = 'root';