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在 Ubuntu 中安装和删除 MySQL 时遇到问题

tag-icon • tag-icon 14.04 server software-installation mysql webserver
在 Ubuntu 中安装和删除 MySQL 时遇到问题

我在 ubuntu15.04 中安装或删除部分安装的 mysql-server-5.6 时遇到问题。我收到的错误是

$ sudo apt-get -f install 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  mysql-server-5.6
The following packages will be upgraded:
  mysql-server-5.6
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
22 not fully installed or removed.
Need to get 0 B/5,501 kB of archives.
After this operation, 50.8 MB of additional disk space will be used.
Do you want to continue? [Y/n] 
Preconfiguring packages ...
Setting up mysql-common (5.6.24-0ubuntu2) ...
update-alternatives: error: alternative path                 /etc/mysql/my.cnf.fallback doesn't exist
dpkg: error processing package mysql-common (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 mysql-common
localepurge: Disk space freed in /usr/share/locale: 0 KiB
localepurge: Disk space freed in /usr/share/man: 0 KiB
localepurge: Disk space freed in /usr/share/gnome/help: 0 KiB
localepurge: Disk space freed in /usr/share/omf: 0 KiB
localepurge: Disk space freed in /usr/share/doc/kde/HTML: 0 KiB

Total disk space freed by localepurge: 0 KiB

E: Sub-process /usr/bin/dpkg returned an error code (1)

有人能帮我吗？

答案1

尝试清除，然后重新安装。

sudo apt-get remove --purge mysql-\*
sudo apt-get install mysql-server mysql-client

更新 04.09.2018：
如果您因为 MySQL 进程处于活动状态而遇到卸载/安装问题，您可以先尝试此操作，然后尝试上述操作：
sudo kill $(pgrep mysql)

答案2

我（Linux新手）必须挖掘的一个非常简单的解决方案是创建文件。

nano /etc/mysql/my.cnf.fallback

并使用 mysql-common 5.7.11-0ubuntu6 包中的默认内容填充它。

#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
# 
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

!includedir /etc/mysql/conf.d/

成立apt-browse.org

答案3

清除/重新安装对我来说也不起作用。我找到了以下“解决方案”：

mysql.cnf.fallback我在“提供的文件”中找不到该文件mysql-server-5.6，mysql-client-5.6也没有找到有关该文件的任何其他信息。

我复制/etc/mysql/my.cnf到/etc/mysql/my.cnf.fallback（猜测这将是一个相对不太重要的“后备”配置文件）；

/etc/mysql/my.cnf是一个符号链接，因此ls /etc/mysql现在显示：

 my.cnf.fallback -> /etc/alternatives/my.cnf
 my.cnf -> /etc/alternatives/my.cnf

然后软件包的安装就顺利完成了，没有错误（因为大概“不存在”的问题已经“解决”了）。

我还没有发现任何不良影响（迄今为止）。

答案4

已确认。订单很重要。

apt remove mysql-* mariadb-* --purge
apt install mysql-common
apt install mariadb-common
apt install mariadb-server

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