安装失败日志
在 CentOS 7 环境下尝试通过 RPM 安装 MySQL 5.7 社区版时，遇到文件冲突导致安装中断。
具体报错信息如下：
rpm -ivh mysql-community-common-5.7.28-1.el7.x86_64.rpm
warning: mysql-community-common-5.7.28-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [100%]
file /usr/share/mysql/czech/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/danish/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/dutch/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/english/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/estonian/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/french/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/german/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/greek/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
file /usr/share/mysql/hungarian/errmsg.sys from install of mysql-community-common-5.7.28-1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.64-1.el7.x86_64
问题分析：日志明确显示 mysql-community-common 包与系统中已安装的 mariadb-libs 包存在文件冲突，涉及多个语言包的 errmsg.sys 文件。这表明必须先清理或替换现有的 MariaDB 依赖库，MySQL 才能正常安装。
