升级到 Ubuntu 16.04 后，我注意到 mysql 出现了令人难以置信的错误。我确信这是一个损坏的设置，于是我尝试运行 mysql 清除。这似乎并没有删除所有内容，所以我尝试自己做：
sudo rm -r /etc/mysql
sudo rm -r /usr/share/mysql-workbench
sudo rm -r /usr/share/mysql
sudo rm -r /usr/share/mysql-common
这是一个错误。永远不要尝试这样做。现在 mysql 甚至无法正确安装。我尝试重新安装依赖项：
sudo apt-get install --reinstall $(apt-cache depends mysql-server | grep -Po 'Depends:\s+\K[^ ]+$' | tr '\n' ' ' )
以及软件包本身：
sudo apt install mysql-workbench mysql-server --reinstall
但我收到各种各样的神秘错误，例如：
sudo apt-get install --reinstall mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
E: Internal Error, No file name for mysql-server:amd64
卸载
sudo apt-get remove mysql-common
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libmysqlclient20 : Depends: mysql-common (>= 5.5) but it is not going to be installed
mariadb-client-core-10.0 : Depends: mariadb-common (>= 10.0.24-7) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
或者如果我重新配置
sudo dpkg --configure -a
Setting up mysql-server-5.7 (5.7.12-0ubuntu1) ...
/var/lib/dpkg/info/mysql-server-5.7.postinst: line 112: /usr/share/mysql-common/configure-symlinks: No such file or directory
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.7; however:
Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server-5.7
mysql-server
或者如果我强制安装：
sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up mysql-server-5.7 (5.7.12-0ubuntu1) ...
/var/lib/dpkg/info/mysql-server-5.7.postinst: line 112: /usr/share/mysql-common/configure-symlinks: No such file or directory
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.7; however:
Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
mysql-server-5.7
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
或者如果我进行清除：
sudo apt-get -f purge mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
mysql-server*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 159 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 348226 files and directories currently installed.)
Removing mysql-server (5.7.12-0ubuntu1) ...
Setting up mysql-server-5.7 (5.7.12-0ubuntu1) ...
/var/lib/dpkg/info/mysql-server-5.7.postinst: line 112: /usr/share/mysql-common/configure-symlinks: No such file or directory
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
mysql-server-5.7
E: Sub-process /usr/bin/dpkg returned an error code (1)
apt 无法从部分安装中恢复吗？我必须重新安装操作系统吗？
答案1
执行以下操作来清除破损的包装：
sudo apt-get clean
sudo apt-get update
sudo dpkg -r mysql-client-5.7
sudo dpkg -r mysql-server-5.7
sudo dpkg -r libmysqlclient20:i386
sudo dpkg -r libmysqlclient20:amd64
sudo dpkg -r libmysqlclient18:amd64
sudo dpkg -r mysql-common
sudo dpkg -r mysql
之后重新安装：
sudo apt-get install mysql mysql-client* mysql-server*
答案2
感谢@Videonauth
sudo dpkg -r mysql-client-5.7
sudo dpkg -r mysql-server-5.7
sudo dpkg -r libmysqlclient20:i386
sudo dpkg -r libmysqlclient20:amd64
sudo dpkg -r libmysqlclient18:amd64
sudo dpkg -r mysql-common
然后运行：
sudo apt-get purge mysql\* mariadb\* libmysql\* libmariadb\*
如果失败，只需运行sudo dpkg -r <failedpackage>，如果失败，只需删除依赖它的包。如果重复，最终 apt-get 将再次工作。
答案3
尝试这个，
运行此命令清除 mysql，将 5.7 版本替换为你安装的版本
sudo apt purge mysql-client-5.7 mysql-client-core-5.7 mysql-common mysql-server-5.7 mysql-server-core-5.7 mysql-server
运行此命令来清理和更新软件包
sudo apt update && sudo apt dist-upgrade && sudo apt autoremove && sudo apt -f install
最后安装mysql
sudo apt install mysql-server
这对我有用。
答案4
我不知道确切的原因，但所有这些方法对我都不起作用。就我而言，解决问题的程序是：
sudo apt-get purge mysql-*
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get dist-upgrade
sudo rm -rf /etc/mysql
sudo rm -rf /var/lib/mysql*
和重启！
终于，我可以跑步了
sudo apt-get install mysql-server！