新搭建的服务器, 先在 Ubuntu 上安装 mariadb, 后来由于很多权限问题, 决定安装 MySQL, 由于在卸载过程中未卸载干净, 导致 MySQL 重新安装过程中出现了很多问题.
- Reading package lists...Done
- Building dependency tree
- Reading state information ... Done
mysql-server is already the newest version(5.7.21-0ubuntu0.16.04.1).
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
mysql-server: depends: mysql-server-5.7 but it is not going to be installed
E: Unmet dependencies.Try 'apt-get -f install' with no packages(or specify a solution).
通过阅读错误信息可知, 主要是因为依赖关系出现问题, 主要思路是重建依赖关系, 然后干净卸载, 最后重装.
首先, 更新系统
sudo apt-get update
然后, 修复安装错误, 会提示输入 mysql 用户名密码
sudo apt-get --fix-broken install
然后, 检索 mysql 安装包, 并删除检索出的依赖包, 然后是删除 / var/lib/mysql, 最后重装 mysql.
下面我把检索到的解决方法展示给大家:
We excute the following commands to solve the above problem:
1.Get the list of MySQL packages installed on the system by executing the command sudo dpkg -l grep mysql
2.Remove the packages shown above by executing the command
- sudo apt-get --purge autoremove <packages from the step 1>
- 3. Delete /var/lib/mysql
4.Try to install mysql again.It should solve your problem.
第二步中的 packages 如下图所示:
最后就是更新系统并重装 mysql
- sudo apt-get update
- sudo apt-get install mysql-server mysql-client
总结:
整体思路还是重建依赖关系, 干净卸载, 更新安装. 希望对遇到相同问题不知所措的小伙伴有所启发, 帮助. 谢谢.
来源: http://www.linuxidc.com/Linux/2018-04/151989.htm