我在mysql服务器上添加记录，然后发生了一些事情。我重新启动了我的树莓pi，意识到我不能启动mysql。
使用phpmyadmin时出错：

Connection for controluser as defined in your configuration failed.

mysql服务状态：

● mysql.service - LSB: Start and stop the mysql database server daemon
   Loaded: loaded (/etc/init.d/mysql)
   Active: failed (Result: exit-code) since Thu 2018-01-11 00:27:52 MSK; 45s ago
  Process: 2186 ExecStart=/etc/init.d/mysql start (code=exited, status=1/FAILURE)

Jan 11 00:37:38 svs /etc/init.d/mysql[6188]: 0 processes alive and '/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian...ted in
Jan 11 00:37:38 svs /etc/init.d/mysql[6188]: [61B blob data]
Jan 11 00:37:38 svs /etc/init.d/mysql[6188]: error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/...' (2)'
Jan 11 00:37:38 svs /etc/init.d/mysql[6188]: Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.so...xists!
Jan 11 00:37:38 svs /etc/init.d/mysql[6188]:
Jan 11 00:37:38 svs mysql[5450]: Starting MySQL database server: mysqld . . . . . . . . . . . . . . . . . . . . . . . . ...failed!
Jan 11 00:37:38 svs systemd[1]: mysql.service: control process exited, code=exited status=1
Jan 11 00:37:38 svs systemd[1]: Failed to start LSB: Start and stop the mysql database server daemon.
Jan 11 00:37:38 svs systemd[1]: Unit mysql.service entered failed state.

mysql-u-p返回

Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'

感谢您的帮助：））
编辑：解决了重新安装mysql的问题。