删除卸载Linux自带的MySQL

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：

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）

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

　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

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]$

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]$

显示系统已经没有mysql服务；

[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