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Linux操作系统下MySQL的卸载、安装全过程

WBOY
WBOYOriginal
2016-06-07 16:51:341144browse

Linux下卸载MySQL1、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

Linux下卸载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

Support MySQL by buying support/licenses at

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%]

3、登陆MySQL

登陆MySQL的命令是MySQL,MySQL 的使用语法如下:

MySQL [-u username] [-h host] [-p[password]] [dbname]

username 与 password 分别是 MySQL 的用户名与密码,MySQL的初始管理帐号是root,,没有密码,注意:这个root用户不是Linux的系统用户。MySQL默认用户是root,由于初始没有密码,第一次进时只需键入MySQL即可

[root@localhost ~]# MySQL

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

Your MySQL connection id is 2

Server version: 5.1.20-beta MySQL Community Server (GPL)

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

MySQL>

出现了“MySQL>”提示符,恭喜你,安装成功!

   增加了密码后的登录格式如下:

   MySQL -u root -p

   Enter password: (输入密码)

   其中-u后跟的是用户名,-p要求输入密码,回车后在输入密码处输入密码。

   注意:这个MySQL文件在/usr/bin目录下,与后面讲的启动文件/etc/init.d/MySQL不是一个文件。

补:

通过rpm包安装、配置及卸载MySQL的详细过程.

  以MySQL-server-4.0.14-0.i386.rpm为例,放在/data目录下

  cd /data

  rpm -ivh MySQL-server-4.0.14-0.i386.rpm

  安装完成后在/usr/share/MySQL目录中会有一个MySQL的启动脚本MySQL.server及示例配置文件等(如my-huge.cnf、my-large.cnf、my-medium.cnf)

  拷贝一个示例配置文件作为MySQL的配置文件:

  cp /usr/share/MySQL/my-medium.cnf /etc/my.cnf

  rpm包安装完后自动将MySQL安装成系统服务,所以可以使用下面命令启动、停止MySQL

linux

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