mysql - 我无法再以 root 身份访问 mysql

Question

我运行 Ubuntu 16.04 和 MYSQL 5.7。

更改localhost中root用户的访问权限后，我无法再进入MySQL，在互联网上搜索但没有找到解决方案。

我没有选择，有人有想法吗？ 当我看到服务器正在运行时，完全删除 MySQL 并重新安装似乎很奇怪。

我做了什么

mysqld stopped with
sudo /etc/init.d/mysql stop

startet with
sudo mysqld_safe --skip-grant-tables

jan@Linux01:~$ sudo mysql -uroot
[sudo] Passwort für jan: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
jan@Linux01:~$ service mysql status
● mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
   Active: active (running) since Don 2018-01-04 22:24:15 CET; 5min ago
  Process: 9021 ExecStartPost=/usr/share/mysql/mysql-systemd-start post (code=exited, status=0/SUCCESS)
  Process: 9010 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
 Main PID: 9020 (mysqld)
   CGroup: /system.slice/mysql.service
           └─9020 /usr/sbin/mysqld

Jän 04 22:24:14 Linux01 mysqld[9020]: 2018-01-04T21:24:14.847017Z 0 [Note] Event Scheduler: Loaded 0 events
Jän 04 22:24:14 Linux01 mysqld[9020]: 2018-01-04T21:24:14.847351Z 0 [Note] /usr/sbin/mysqld: ready for connections.
Jän 04 22:24:14 Linux01 mysqld[9020]: Version: '5.7.20-0ubuntu0.16.04.1'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  (Ubuntu)
Jän 04 22:24:14 Linux01 mysqld[9020]: 2018-01-04T21:24:14.847384Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '-
Jän 04 22:24:14 Linux01 mysqld[9020]: 2018-01-04T21:24:14.847388Z 0 [Note] Beginning of list of non-natively partitioned tables
Jän 04 22:24:14 Linux01 mysqld[9020]: 2018-01-04T21:24:14.904105Z 0 [Note] End of list of non-natively partitioned tables
Jän 04 22:24:15 Linux01 mysqld[9020]: 2018-01-04T21:24:15.429487Z 3 [Note] Access denied for user 'root'@'localhost' (using password: NO)
Jän 04 22:24:15 Linux01 systemd[1]: Started MySQL Community Server.

Answer 1

我不认为以这种方式停止 mysql 是真正的问题，但是输入 mysql 时有一个拼写错误 mysql -uroot 是完全，什么时候是 mysql -u root -p 加上你的密码。

正如你所见，我也是 Ubuntu 16.04 和 mysql 5.7:

mysql -u root -p

返回这个

mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 21
Server version: 5.7.20-0ubuntu0.16.04.1 (Ubuntu)

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mysql>

编辑添加

如果你尝试一下

mysql -uroot

是的，您收到错误 1045(28000):访问被拒绝...