如何实用rpm卸载安装mysql

　重新安装mysql或进行一些其他 *** 作要卸载mysql时可按以下步骤进行：

1、先备份数据库。包括mysql数据目录配置文件等等，或者直接备份整个文件夹，以备他用。

2、用rpm -qa|grep mysql命令列出当前系统所安装的和mysql相关的东东，当前系统运行结果如下：

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

mysql-4.1.12-3.RHEL4.1

mysqlclient10-3.23.58-4.RHEL4.1

warning: only V3 signatures can be verified, skipping V4 signature

直接执行rpm -e mysqlclient10-3.23.58-4.RHEL4.1一般即可卸载，若卸载不掉，用

rpm -e --nodeps XXXXXXX

即可强制卸载，卸载顺序由下往上。

3、卸载完以后用rpm -q mysql或者rpm -qa|grep mysql查看结果·

环境：

Linux:CentOS release 6.3

MySQL: 5.6.28-log MySQL Community Server (GPL)

1.检查mysql rpm相关的包是否安装

[root@mysqlmaster mysqlinstall]# rpm -qa | grep -i mysql

mysql-libs-5.1.61-4.el6.x86_64

如果存在删除：

[root@mysqlmaster mysqlinstall]# rpm -e mysql-libs-5.1.61-4.el6.x86_64

error: Failed dependencies:

libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

忽略依赖包删除

[root@redis1 ~]# rpm -e --nodeps mysql-libs-5.1.61-4.el6.x86_64

或者删除依赖包

[root@mysqlmaster mysqlinstall]# yum -y remove mysql-libs

[root@mysqlmaster mysqlinstall]# rpm -qa | grep -i mysql

2.上传下载的安装包MySQL-5.6.28-1.el6.x86_64.rpm-bundle.tar

解压：

tar -xvf MySQL-5.6.28-1.el6.x86_64.rpm-bundle.tar

3.安装mysql服务端：

[root@mysqlmaster mysqlinstall]# rpm -ivh MySQL-server-5.6.28-1.el6.x86_64.rpm

warning: MySQL-server-5.6.28-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

libnuma.so.1()(64bit) is needed by MySQL-server-5.6.28-1.el6.x86_64

libnuma.so.1(libnuma_1.1)(64bit) is needed by MySQL-server-5.6.28-1.el6.x86_64

libnuma.so.1(libnuma_1.2)(64bit) is needed by MySQL-server-5.6.28-1.el6.x86_64

缺失依赖包

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