我认为yum安装 MySQL 5.1 时遇到了问题，因为已经有一个预先存在的 MySQL 5.5 安装。
我想干净地删除 MySQL 5.5（我在使用 PHP 和 Python 5.5 时遇到了问题）。
我删除了与 MySQL 5.5 相关的所有文件夹和文件：
yum remove mysql-server
rm -i /usr/bin/mysq*
rm -R /var/lib/mysql/ /usr/share/mysql/ /usr/lib64/mysql/ /usr/include/mysql/
我打字find / -name mysql然后得到
/usr/lib64/perl5/auto/DBD/mysql
/usr/lib64/perl5/DBD/mysql
现在当我尝试时yum install mysql-server.x86_64出现以下错误：
Loaded plugins: downloadonly, fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.team-cymru.org
* epel: mirror.hiwaay.net
* extras: centos.digitalcompass.net
* updates: centos.digitalcompass.net
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mysql-server.x86_64 0:5.1.61-1.el6_2.1 will be installed
--> Processing Dependency: mysql = 5.1.61-1.el6_2.1 for package: mysql-server-5.1.61-1.el6_2.1.x86_64
--> Running transaction check
---> Package mysql.x86_64 0:5.1.61-1.el6_2.1 will be installed
--> Processing Dependency: mysql-libs = 5.1.61-1.el6_2.1 for package: mysql-5.1.61-1.el6_2.1.x86_64
--> Running transaction check
---> Package mysql-libs.x86_64 0:5.1.52-1.el6_0.1 will be updated
---> Package mysql-libs.x86_64 0:5.1.61-1.el6_2.1 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================================================================================================================================================================================================================
Package Arch Version Repository Size
================================================================================================================================================================================================================================================================================
Installing:
mysql-server x86_64 5.1.61-1.el6_2.1 updates 8.1 M
Installing for dependencies:
mysql x86_64 5.1.61-1.el6_2.1 updates 881 k
Updating for dependencies:
mysql-libs x86_64 5.1.61-1.el6_2.1 updates 1.2 M
Transaction Summary
================================================================================================================================================================================================================================================================================
Install 2 Package(s)
Upgrade 1 Package(s)
Total size: 10 M
Total download size: 9.0 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): mysql-5.1.61-1.el6_2.1.x86_64.rpm | 881 kB 00:00
(2/2): mysql-server-5.1.61-1.el6_2.1.x86_64.rpm | 8.1 MB 00:02
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 3.0 MB/s | 9.0 MB 00:02
Running rpm_check_debug
Running Transaction Test
Transaction Check Error:
file /usr/bin/mysql from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/msql2mysql from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysql_find_rows from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysql_waitpid from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlaccess from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqladmin from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlbinlog from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlcheck from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqldump from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlimport from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlshow from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysqlslap from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysql.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysql_find_rows.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysql_waitpid.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlaccess.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqladmin.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqldump.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlshow.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlslap.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/msql2mysql.1.gz from install of mysql-server-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlbinlog.1.gz from install of mysql-server-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlcheck.1.gz from install of mysql-server-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysqlimport.1.gz from install of mysql-server-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-client-5.5.20-1.linux2.6.x86_64
file /usr/bin/mysql_config from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-devel-5.5.20-1.linux2.6.x86_64
file /usr/share/man/man1/mysql_config.1.gz from install of mysql-5.1.61-1.el6_2.1.x86_64 conflicts with file from package MySQL-devel-5.5.20-1.linux2.6.x86_64
Error Summary
-------------
我删除了名为 的所有文件和文件夹mysql，我需要删除这些MySQL-client-5.5.20-1.linux2.6.x86_64包吗？如果需要，我该怎么做？
答案1
是的，您需要删除 MySQL 5.5 客户端，以消除冲突。尝试
rpm -e MySQL-client-5.5.20-1.linux2.6.x86_64
rpm -e MySQL-devel-5.5.20-1.linux2.6.x86_64
答案2
仔细检查 mysql 包是否已完全删除
yum list installed | grep -i mysql
如果发现任何内容，请删除
yum erase <package-name>
如果没有剩余安装的软件包。输出为冲突的目录列表引用了剩余的所有文件，因此...必须删除！
编辑：是的，删除 MySQL-client 包。这确实看起来是冲突。