Linux下删除卸载系统自带的MySQL数据库

近期由于工作需要，加上偶上辈子修来的福分，让偶一个坐coder的，去linux下配置运行环境。故，经历了些事，且总结了点东东，今晚有机会写下点东东，与各位分享一下...

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有关如何在linux下安装mysql，可以参考我的另一篇博文 http://syc001.iteye.com/blog/1151858

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/*****----------------? Uninstall Linux installed mysql begin? -------------------*****/

由于redhat Enterprise 5 中自带一个mysql的版本，如果在安装linux前未选择mysql的安装此步就可跳过，因为我当时安装了现在将其卸载，步骤如下：

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?????? a. 查找已安装的myslq 版本：

??????? #rpm? -qa | grep? mysql （注意大小写，如果mysql 不行就换MySQL）

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出现：

[ysong@sva_rec mysql]$ rpm? -qa | grep? mysql
mysql-5.0.45-7.el5
libdbi-dbd-mysql-0.8.1a-1.2.2
mysql-5.0.45-7.el5
mysql-server-5.0.45-7.el5
mysql-connector-odbc-3.51.12-2.2

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卸载命令：

//卸载已安装的mysql
# rpm e mysql-*

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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 -rf /var/lib/mysql

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或者，参考

（系统 CentOS4.3
安装方法 #yum -y install mysql-server
mysql版本 mysql-server.i386-4.1.20-1.RHEL4.1
删除方法 #yum -y remove mysql-server
???????? #yum -y remove mysql

）

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后，在输入命令：

[ysong@sva_rec mysql]$ sudo yum -y remove mysql-5.0.45-7.el5
Password:
Loading "security" plugin
Loading "rhnplugin" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package mysql.x86_64 0:5.0.45-7.el5 set to be erased
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: dovecot
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: mysql-server
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: mysql-connector-odbc
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: perl-DBD-MySQL
--> Processing Dependency: libmysqlclient.so.15()(64bit) for package: libdbi-dbd-mysql
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: dovecot
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: mysql-server
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: mysql-connector-odbc
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: perl-DBD-MySQL
--> Processing Dependency: libmysqlclient.so.15(libmysqlclient_15)(64bit) for package: libdbi-dbd-mysql
--> Processing Dependency: libmysqlclient_r.so.15()(64bit) for package: mysql-connector-odbc
--> Processing Dependency: libmysqlclient_r.so.15()(64bit) for package: mysql-server
--> Processing Dependency: libmysqlclient_r.so.15()(64bit) for package: MySQL-python
--> Processing Dependency: libmysqlclient_r.so.15(libmysqlclient_15)(64bit) for package: mysql-connector-odbc
--> Processing Dependency: libmysqlclient_r.so.15(libmysqlclient_15)(64bit) for package: mysql-server
--> Processing Dependency: libmysqlclient_r.so.15(libmysqlclient_15)(64bit) for package: MySQL-python
--> Processing Dependency: mysql for package: libdbi-dbd-mysql
--> Processing Dependency: mysql = 5.0.45-7.el5 for package: mysql-server
--> Processing Dependency: mysql for package: MySQL-python
---> Package mysql.i386 0:5.0.45-7.el5 set to be erased
--> Running transaction check
---> Package mysql-server.x86_64 0:5.0.45-7.el5 set to be erased
---> Package MySQL-python.x86_64 0:1.2.1-1 set to be erased
---> Package libdbi-dbd-mysql.x86_64 0:0.8.1a-1.2.2 set to be erased
---> Package perl-DBD-MySQL.x86_64 0:3.0007-1.fc6 set to be erased
---> Package mysql-connector-odbc.x86_64 0:3.51.12-2.2 set to be erased
---> Package dovecot.x86_64 0:1.0.7-2.el5 set to be erased
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================
?Package???????????????? Arch?????? Version????????? Repository??????? Size
=============================================================================
Removing:
?mysql?????????????????? x86_64???? 5.0.45-7.el5???? installed???????? 7.5 M
?mysql?????????????????? i386?????? 5.0.45-7.el5???? installed???????? 7.3 M
Removing for dependencies:
?MySQL-python??????????? x86_64???? 1.2.1-1????????? installed???????? 288 k
?dovecot???????????????? x86_64???? 1.0.7-2.el5????? installed???????? 3.7 M
?libdbi-dbd-mysql??????? x86_64???? 0.8.1a-1.2.2???? installed????????? 55 k
?mysql-connector-odbc??? x86_64???? 3.51.12-2.2????? installed???????? 420 k
?mysql-server??????????? x86_64???? 5.0.45-7.el5???? installed????????? 22 M
?perl-DBD-MySQL????????? x86_64???? 3.0007-1.fc6???? installed???????? 328 k

Transaction Summary
=============================================================================
Install????? 0 Package(s)????????
Update?????? 0 Package(s)????????
Remove?????? 8 Package(s)????????

Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
? Erasing?? : mysql-server???????????????? ######################### [1/8]
warning: /var/log/mysqld.log saved as /var/log/mysqld.log.rpmsave
? Erasing?? : MySQL-python???????????????? ######################### [2/8]
? Erasing?? : mysql??????????????????????? ######################### [3/8]
? Erasing?? : libdbi-dbd-mysql???????????? ######################### [4/8]
? Erasing?? : perl-DBD-MySQL?????????????? ######################### [5/8]
? Erasing?? : mysql-connector-odbc???????? ######################### [6/8]
? Erasing?? : dovecot????????????????????? ######################### [7/8]
? Erasing?? : mysql??????????????????????? ######################### [8/8]

Removed: mysql.x86_64 0:5.0.45-7.el5 mysql.i386 0:5.0.45-7.el5
Dependency Removed: MySQL-python.x86_64 0:1.2.1-1 dovecot.x86_64 0:1.0.7-2.el5 libdbi-dbd-mysql.x86_64 0:0.8.1a-1.2.2 mysql-connector-odbc.x86_64 0:3.51.12-2.2 mysql-server.x86_64 0:5.0.45-7.el5 perl-DBD-MySQL.x86_64 0:3.0007-1.fc6
Complete!

[ysong@sva_rec mysql]$

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OK,到此，Linux下自带的mysql已经完全卸载，此时，再输入：

[ysong@sva_rec mysql]$ rpm? -qa | grep? mysql
[ysong@sva_rec mysql]$

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显示系统已经没有mysql服务；

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[ysong@sva_rec mysql]$ netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address?????????????? Foreign Address???????????? State?????
tcp??????? 0????? 0 127.0.0.1:2208????????????? 0.0.0.0:*?????????????????? LISTEN?????
tcp??????? 0????? 0 0.0.0.0:139???????????????? 0.0.0.0:*?????????????????? LISTEN

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/*****----------------? Uninstall Linux installed mysql end? -------------------*****/