在Ubuntu 14.04上安装mysql的问题
输入mysql“root”密码后，我很快就遇到了以下错误：
An error occurred while setting the password for the MySQL administrative user. This may have happened because the account already has a password, or because of a communication problem with the MySQL server. 以下是apt-get install mysql-server的完整输出：
Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libaio1 libdbd-mysql-perl libdbi-perl libmysqlclient18 libterm-readkey-perl mysql-client-5.5 mysql-client-core-5.5 mysql-common mysql-server-5.5 mysql-server-core-5.5 Suggested packages: libclone-perl libmldbm-perl libnet-daemon-perl libplrpc-perl libsql-statement-perl tinyca mailx The following NEW packages will be installed: libaio1 libdbd-mysql-perl libdbi-perl libmysqlclient18 libterm-readkey-perl mysql-client-5.5 mysql-client-core-5.5 mysql-common mysql-server mysql-server-5.5 mysql-server-core-5.5 0 upgraded, 11 newly installed, 0 to remove and 49 not upgraded. Need to get 0 B/8,797 kB of archives. After this operation, 93.5 MB of additional disk space will be used. Do you want to continue? [Y/n] y Preconfiguring packages ... Selecting previously unselected package libaio1:i386. (Reading database ... 88930 files and directories currently installed.) Preparing to unpack .../libaio1_0.3.109-4_i386.deb ... Unpacking libaio1:i386 (0.3.109-4) ... Selecting previously unselected package mysql-common. Preparing to unpack .../mysql-common_5.5.40-0ubuntu0.14.04.1_all.deb ... Unpacking mysql-common (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package libmysqlclient18:i386. Preparing to unpack .../libmysqlclient18_5.5.40-0ubuntu0.14.04.1_i386.deb ... Unpacking libmysqlclient18:i386 (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package libdbi-perl. Preparing to unpack .../libdbi-perl_1.630-1_i386.deb ... Unpacking libdbi-perl (1.630-1) ... Selecting previously unselected package libdbd-mysql-perl. Preparing to unpack .../libdbd-mysql-perl_4.025-1_i386.deb ... Unpacking libdbd-mysql-perl (4.025-1) ... Selecting previously unselected package libterm-readkey-perl. Preparing to unpack .../libterm-readkey-perl_2.31-1_i386.deb ... Unpacking libterm-readkey-perl (2.31-1) ... Selecting previously unselected package mysql-client-core-5.5. Preparing to unpack .../mysql-client-core-5.5_5.5.40-0ubuntu0.14.04.1_i386.deb ... Unpacking mysql-client-core-5.5 (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package mysql-client-5.5. Preparing to unpack .../mysql-client-5.5_5.5.40-0ubuntu0.14.04.1_i386.deb ... Unpacking mysql-client-5.5 (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package mysql-server-core-5.5. Preparing to unpack .../mysql-server-core-5.5_5.5.40-0ubuntu0.14.04.1_i386.deb ... Unpacking mysql-server-core-5.5 (5.5.40-0ubuntu0.14.04.1) ... Processing triggers for man-db (2.6.7.1-1) ... Setting up mysql-common (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package mysql-server-5.5. (Reading database ... 89293 files and directories currently installed.) Preparing to unpack .../mysql-server-5.5_5.5.40-0ubuntu0.14.04.1_i386.deb ... Unpacking mysql-server-5.5 (5.5.40-0ubuntu0.14.04.1) ... Selecting previously unselected package mysql-server. Preparing to unpack .../mysql-server_5.5.40-0ubuntu0.14.04.1_all.deb ... Unpacking mysql-server (5.5.40-0ubuntu0.14.04.1) ... Processing triggers for man-db (2.6.7.1-1) ... Processing triggers for ureadahead (0.100.0-16) ... Setting up libaio1:i386 (0.3.109-4) ... Setting up libmysqlclient18:i386 (5.5.40-0ubuntu0.14.04.1) ... Setting up libdbi-perl (1.630-1) ... Setting up libdbd-mysql-perl (4.025-1) ... Setting up libterm-readkey-perl (2.31-1) ... Setting up mysql-client-core-5.5 (5.5.40-0ubuntu0.14.04.1) ... Setting up mysql-client-5.5 (5.5.40-0ubuntu0.14.04.1) ... Setting up mysql-server-core-5.5 (5.5.40-0ubuntu0.14.04.1) ... Setting up mysql-server-5.5 (5.5.40-0ubuntu0.14.04.1) ... 141117 20:53:10 [Warning] Using unique option prefix key_buffer instead of key_buffer_size is deprecated and will be removed in a future release. Please use the full name instead. start: Job failed to start invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing package mysql-server-5.5 (--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-5.5; however: Package mysql-server-5.5 is not configured yet. dpkg: error processing package mysql-server (--configure): dependency problems - leaving unconfigured Processing triggers for libc-bin (2.19-0ubuntu6.3) ... No apport report written because the error message indicates its a followup error from a previous failure. Processing triggers for ureadahead (0.100.0-16) ... Errors were encountered while processing: mysql-server-5.5 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1)
要完全卸载mysql，我已经完成了以下步骤：
sudo apt-get remove --purge mysql-server mysql-client mysql-common sudo apt-get remove --purge mysql-server-core-5.5 mysql-client-core-5.5 sudo apt-get autoremove sudo apt-get autoclean sudo deluser mysql sudo rm -rf /var/lib/mysql sudo rm -rf /etc/mysql
这似乎完全删除了所有内容，但后续安装尝试会产生同样的问题。
我还在/ tmp上设置了权限。
可能会注意到Postgres安装在这台机器上，但据我所知，这应该不是问题。
在此先感谢您的任何帮助/建议。
关键线索可能是输出中的这一行：
dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.5; however: Package mysql-server-5.5 is not configured yet.
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确保完全删除/清除MySQL
sudo apt-get remove --purge mysql-server mysql-client mysql-common mysql-server-5.5 mysql-client-5.5 mysql-server-core-5.5 mysql-client-core-5.5 sudo apt-get autoremove sudo apt-get autoclean sudo rm -rf /var/lib/mysql /etc/mysql sudo deluser mysql sudo apt-get dist-upgrade sudo reboot sudo apt-get install mysql-server-5.5 sudo apt-get install mysql-server
我有类似的问题。 我尝试将MariaDB 10.0与MySQL Workbench一起使用，这是一些问题，关键是我最终安装和卸载MySQL和MariaDB软件包，直到我破坏了所有，我无法安装MariaDB或MySQL。我有一个不好的时间尝试解决它，最后我找到了一个解决方案，我从与此问题相关的类似问题以及dpkg和apt问题中找到了解决方案。 对于MariaDB或MySQL，这是相同的。 所以……这是解决方案：
我做的和你一样：
sudo aptitude purge mysql-server mysql-client mysql-common sudo apt-get autoremove sudo aptitude autoclean sudo deluser mysql sudo rm -rf /var/lib/mysql sudo rm -rf /etc/mysql
从现在开始，我根据dpkg问题的答案做了这个。 我不知道这是否最安全但很好，它有效：
cd /var/lib/dpkg/info/ sudo rm -rf mysql*
这就是全部，我再次安装并且工作正常。 我希望这对某人有用。
从您的问题看来，您似乎已经使用了该命令
sudo rm -rf /ver/lib/mysql而不是sudo rm -rf /var/lib/mysql
确保my.cnf已从/etc/my.cnf位置删除。
sudo rm /etc/my.cnf sudo apt-get remove mysql-server mysql-client mysql-common
完成后，再次尝试重新安装mysql服务器。