1.打开nano / vim，创建一个包含以下内容的文件，并将文件保存为~/mysql-pwd

ALTER USER 'root'@'localhost' IDENTIFIED BY 'NEWPASSWORD';

停止mysql sudo systemctl停止mysql 执行sudo mysqld -init-file=~/mysql-pwd命令 重启mysql sudo systemctl start mysql 现在登录mysql -u root -p。password将是你的NEWPASSWORD

Instead of resetting the password there is a work around on the local machine if you have setup phpmyadmin to connect without giving the password or username. Check this out by starting mysql, apache etc. I have xampp installed in my local machine. So starting the xampp will start all the necessary services. Now going to http://localhost/phpmyadmin shows me all the databases. This confirms that you have saved the username and passsword in the config file of phpmyadmin which can be found in the phpmyadmin install location. If you have xampp installed the phpmyadmin folder can be found in the root folder of xampp installation. Search for the word password in the config.inc.php file. There you will find the password and username.

如果你知道“root”用户密码，请使用该凭证登录mysql。然后执行以下查询以更新密码。

ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_passowrd';

下面的步骤对我很有效。我使用MySQL 8。*在Ubuntu上

停止MySQL服务，检查状态确认服务已停止

Sudo systemctl停止mysql Sudo systemctl status mysql

编辑systemd配置文件，这样您就可以在没有权限检查的情况下访问MySQL Sudo systemctl编辑mysql 复制并粘贴以下3行

(服务) ExecStart = ExecStart=/usr/sbin/mysqld——skip-grant-tables——skip-networking

粘贴行后按CTRL+0保存，然后按CTRL+X退出

重新加载mysql服务并启动它(使用——skip-grant-table启动服务)

Sudo systemctl daemon-reload Sudo systemctl启动mysql

5.现在无需密码即可连接MySQL服务器

sudo mysql -u root

6.通过运行加载授权表

mysql> FLUSH PRIVILEGES;

重置root密码

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YourPasswordHere';

关闭mysql连接

mysql >退出

恢复对mysql systemd文件所做的修改

Sudo systemctl恢复mysql

重新加载mysql守护进程以进行更改。

Sudo systemctl daemon-reload

最后重新启动MySQL服务

Sudo systemctl restart mysql

现在用第7步设置的新密码连接mysql

你可以访问这个链接重置mysql 8的根密码了解更多细节。

唯一对我有效的方法是这里描述的(我运行的是ubuntu 14.04)。为了清晰起见，以下是我遵循的步骤:

sudo vim /etc/mysql/my.cnf Add the following lines at the end: [mysqld] skip-grant-tables sudo service mysql restart mysql -u root use mysql select * from mysql.user where user = 'root'; - Look at the top to determine whether the password column is called password or authentication_string UPDATE mysql.user set *password_field from above* = PASSWORD('your_new_password') where user = 'root' and host = 'localhost'; - Use the proper password column from above FLUSH PRIVILEGES; exit sudo vim /etc/mysql/my.cnf Remove the lines added in step 2 if you want to keep your security standards. sudo service mysql restart

参考:https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html

如果你想修改MySQL root密码，在终端输入:

Sudo dpkg-reconfigure mysql-server-5.5

MySQL守护进程将被停止，并提示您输入新密码。