好的，我决定从 MySQL Server 5.5.37 迁移到 Percona Server 5.6。我最终通过以下方式删除了 MySQL Server：
sudo apt-get --purge remove mysql-server mysql-server-5.5 mysql-server-core-5.5 mysql-client mysql-client-core-5.5 mysql-common
sudo apt-get autoremove
sudo apt-get autoclean
rm -rf /var/lib/mysql
rm -rf /etc/mysql
现在我的问题来了，当我尝试安装 MySQL Server 5.6 时，它会执行其流程，当它要求我输入密码时，它会显示无法设置 MySQL“root”密码。“安装”后，MySQL 无法启动，并且我被拒绝权限？
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 35 not upgraded.
brandon@brandon-DB:~$ sudo apt-get install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
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:
libmldbm-perl libnet-daemon-perl libplrpc-perl libsql-statement-perl tinyca mailx
The following NEW packages will be installed:
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, 10 newly installed, 0 to remove and 35 not upgraded.
Need to get 0 B/8,955 kB of archives.
After this operation, 96.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Preconfiguring packages ...
Selecting previously unselected package mysql-common.
(Reading database ... 167760 files and directories currently installed.)
Preparing to unpack .../mysql-common_5.5.37-0ubuntu0.14.04.1_all.deb ...
Unpacking mysql-common (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package libmysqlclient18:amd64.
Preparing to unpack .../libmysqlclient18_5.5.37-0ubuntu0.14.04.1_amd64.deb ...
Unpacking libmysqlclient18:amd64 (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package libdbi-perl.
Preparing to unpack .../libdbi-perl_1.630-1_amd64.deb ...
Unpacking libdbi-perl (1.630-1) ...
Selecting previously unselected package libdbd-mysql-perl.
Preparing to unpack .../libdbd-mysql-perl_4.025-1_amd64.deb ...
Unpacking libdbd-mysql-perl (4.025-1) ...
Selecting previously unselected package libterm-readkey-perl.
Preparing to unpack .../libterm-readkey-perl_2.31-1_amd64.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_5.5.37-0ubuntu0.14.04.1_amd64.deb ...
Unpacking mysql-client-core-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package mysql-client-5.5.
Preparing to unpack .../mysql-client-5.5_5.5.37-0ubuntu0.14.04.1_amd64.deb ...
Unpacking mysql-client-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package mysql-server-core-5.5.
Preparing to unpack .../mysql-server-core-5.5_5.5.37-0ubuntu0.14.04.1_amd64.deb ...
Unpacking mysql-server-core-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Processing triggers for man-db (2.6.7.1-1) ...
Setting up mysql-common (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package mysql-server-5.5.
(Reading database ... 168116 files and directories currently installed.)
Preparing to unpack .../mysql-server-5.5_5.5.37-0ubuntu0.14.04.1_amd64.deb ...
Unpacking mysql-server-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Selecting previously unselected package mysql-server.
Preparing to unpack .../mysql-server_5.5.37-0ubuntu0.14.04.1_all.deb ...
Unpacking mysql-server (5.5.37-0ubuntu0.14.04.1) ...
Processing triggers for ureadahead (0.100.0-16) ...
Processing triggers for man-db (2.6.7.1-1) ...
Setting up libmysqlclient18:amd64 (5.5.37-0ubuntu0.14.04.1) ...
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 (5.5.37-0ubuntu0.14.04.1) ...
Setting up mysql-client-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Setting up mysql-server-core-5.5 (5.5.37-0ubuntu0.14.04.1) ...
Setting up mysql-server-5.5 (5.5.37-0ubuntu0.14.04.1) ...
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) ...
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)
我已将所有数据库/表转储到单独的硬盘上。这也是一台开发机器，而不是我的主要生产机器。我还备份了 MySQL_Config 和 MySQL_Data。
编辑：我能够在我的计算机上安装 MySQL Server 5.6！
答案1
配置mysql-server-5.5然后安装mysql-server。
sudo dpkg --configure mysql-server-5.5