linux下mysql的卸载、安装全过程

卸载mysql

1、查找以前是否装有mysql

命令：rpm -qa|grep -i mysql

可以看到mysql的两个包：

mysql-4.1.12-3.RHEL4.1

mysqlclient10-3.23.58-4.RHEL4.1

2、删除mysql

删除命令：rpm -e --nodeps 包名

( rpm -ev mysql-4.1.12-3.RHEL4.1 )

3、删除老版本mysql的开发头文件和库

命令：rm -fr /usr/lib/mysql

rm -fr /usr/include/mysql

注意：卸载后/var/lib/mysql中的数据及/etc/my.cnf不会删除，如果确定没用后就手工删除

rm -f /etc/my.cnf

　　rm -fr /var/lib/mysql

安装mysql

安装前准备：两个rpm包

MySQL-client-5.1.20-0.glibc23.i386.rpm

MySQL-server-5.1.20-0.glibc23.i386.rpm

1、安装服务端：

命令：rpm -ivh MySQL-server-5.1.20-0.glibc23.i386.rpm

安装成功会出现....

warning: MySQL-server-5.1.20-0.glibc23.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5

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

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

080220 13:58:27 [Note] Plugin 'InnoDB' disabled by command line option

080220 13:58:28 [Note] Plugin 'InnoDB' disabled by command line option

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.

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

The latest information about MySQL is available on the web at

http://www.mysql.com

Support MySQL by buying support/licenses at http://shop.mysql.com

Starting MySQL.[ OK ]

2、安装客户端

命令：rpm -ivh MySQL-client-5.1.20-0.glibc23.i386.rpm

成功表现：

[root@localhost ~]# rpm -ivh MySQL-client-5.1.20-0.glibc23.i386.rpm

warning: MySQL-client-5.1.20-0.glibc23.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5

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

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