根据MySql版本的不同，该过程有所不同。按照您的版本所描述的步骤进行操作:

HINTS - Read before the instructions page for your version of MySql* In step 5: Instead of run CMD, create a shortcut on your desktop calling CDM.exe. Then right-click on the shortcut and select "Execute as Administrator". In step 6: Skip the first proposed version of the command and execute the second one, the one with the --defaults-file parameter Once you execute the command, if everything is ok, the CMD window remains open and the command of step 6 continues executing. Simply close the window (click 'x'), and then force close MySQl from the Task Manager. Delete the file with the SQL commands, and start again MySQL. The password must be changed now.

5.0 http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html

5.1 http://dev.mysql.com/doc/refman/5.1/en/resetting-permissions.html

…只需在链接中更改版本(5.5,5.6,5.7)

多亏了@thusharaK，我可以在不知道旧密码的情况下重置根密码。

在ubuntu上，我做了以下操作:

sudo service mysql stop
sudo mysqld_safe --skip-grant-tables --skip-syslog --skip-networking

然后在新的终端运行mysql:

mysql -u root

并执行如下命令修改密码:

UPDATE mysql.user SET authentication_string=PASSWORD('password') WHERE User='root';
FLUSH PRIVILEGES;

在MySQL 5.7中，MySQL中的password字段。用户表字段被删除，现在字段名是'authentication_string'。

退出mysql安全模式，启动mysql服务:

mysqladmin shutdown
sudo service mysql start

有一件事绊倒了我在一个新的MySQL安装，并想知道为什么我不能得到默认密码工作，为什么甚至重置方法不起作用。 在Ubuntu 18上，MySQL服务器的最新版本在默认情况下根本不使用root用户的密码认证。这意味着不管你设置它为什么，它都不会让你使用它。它期望您从特权套接字登录。

mysql -u root -p

即使您使用了正确的密码，这也不起作用。

相反，你需要使用:

sudo mysql

这将适用于任何密码。 然后输入

 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'Password you want to use';

然后登出，现在它将接受您的密码。

这招对我很管用:

在终端类型上执行如下操作

$ sudo mysql -u root -p

Enter password://直接按Enter

mysql >

系统:

中佐的Linux 7 位于华盛顿市郊1414区

过程:

Open two shell sessions, logging in to one as the Linux root user and the other as a nonroot user with access to the mysql command. In your root session, stop the normal mysqld listener and start a listener which bypasses password authentication (note: this is a significant security risk as anyone with access to the mysql command may access your databases without a password. You may want to close active shell sessions and/or disable shell access before doing this): # systemctl stop mysqld # /usr/sbin/mysqld --skip-grant-tables -u mysql & In your nonroot session, log in to mysql and set the mysql root password: $ mysql mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPass'); Query OK, 0 rows affected, 1 warning (0.01 sec) mysql> quit; In your root session, kill the passwordless instance of mysqld and restore the normal mysqld listener to service: # kill %1 # systemctl start mysqld In your nonroot session, test the new root password you configured above: $ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql>

我用另一种方法解决了这个问题，这对一些人来说可能更简单。

我这样做是因为我尝试在安全模式下启动，但无法连接到错误: ERROR 2002 (HY000):无法通过socket '/var/run/mysqld/mysqld连接到本地MySQL服务器。袜子”(2)

我所做的就是以root用户正常连接:

$ sudo mysql -u root

然后我创建了一个新的超级用户:

mysql> grant all privileges on *.* to 'myuser'@'%' identified by 'mypassword' with grant option;
mysql> quit

然后以myuser身份登录

$ mysql -u myuser -p -h localhost

尝试更改密码没有给我任何错误，但对我没有任何帮助，所以我放弃并重新创建根用户

mysql> drop user 'root'@'localhost;
mysql> mysql> grant all privileges on *.* to 'root'@'localhost' identified by 'mypassword' with grant option;

根用户现在正在使用新密码