对于Linux下安装MySQL我们推荐rpm安装。别的不说了，下面是本人的全过程；

首先一下：

[root@localhost mysql]# rpm -qa  |grep mysql

mysql-libs-5.0.51a-1.fc9.i386

mysql-5.0.51a-1.fc9.i386

mysql-connector-odbc-3.51.24r1071-1.fc9.i386

mysql-server-5.0.51a-1.fc9.i386

php-mysql-5.2.5-7.fc9.i386

libdbi-dbd-mysql-0.8.3-1.fc9.i386

我们用rpm -e 卸载即可。如果有依赖兴可用rpm -e --nodeps即可。因为我是想换一下版本，。需把以前的卸载。注意备份自己的数据。至于如何备份以后本人推出的MySQL专辑汇详细介绍。好了，卸载之后就可以了。然后删除以前的my.cnf，其实不删也无妨。

[root@localhost ~]# rm -f /etc/my.cnf

[root@localhost ~]#  rm -rf /var/lib/mysql

这样以后就可以安装额。

先安装服务器软件包。如下：

[root@localhost ~]# rpm -ivh  MySQL-server-5.1.7-0.i386.rpm

Preparing...                ########################################### [100%]

1:MySQL-server           ########################################### [100%]

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !

To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'

/usr/bin/mysqladmin -u root -h localhost.localdomain password 'new-password'

See the manual for more instructions.

NOTE:  If you are upgrading from a MySQL <= 3.22.10 you should run

the /usr/bin/mysql_fix_privilege_tables. Otherwise you will not be

able to use the new GRANT command!

Please report any problems with the /usr/bin/mysqlbug script!

The latest information about MySQL is available on the web athttp://www.mysql.com

Support MySQL by buying support/licenses athttps://order.mysql.com

Starting MySQL[确定]

下面客户软件的安装，这是我们的客户端，比如mysql，mysqladmin等

[root@localhost ~]# rpm -ivh  MySQL-client-5.1.7-0.i386.rpm

Preparing...                ########################################### [100%]

1:MySQL-client           ########################################### [100%]

下面是共享库的安装，

[root@localhost ~]# rpm -ivh  MySQL-shared-5.1.7-0.i386.rpm

Preparing...                ########################################### [100%]

1:MySQL-shared           ########################################### [100%]

然后

[root@localhost mysql]# cp my-medium.cnf  /etc/my.cnf

[root@localhost mysql]# /etc/init.d/mysql start

Starting MySQL                                             [确定]

[root@localhost mysql]# mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1 to server version: 5.1.7-beta

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql>

好，OK，

注意事项：前面的已安装库等要写全部卸载，不然你发现诸如mysqlmysql manager and pid-file was not found等错误。