我刚刚在Mac OS x上安装了MySQL,下一步是设置root用户密码,所以我接下来这样做:

启动终端应用程序以访问Unix命令行。 在Unix提示符下,我执行了以下命令: cd /usr/local/mysql/bin ./mysqladmin -u root password' password'

但是,当我执行命令时

./mysql -u root,这是答案:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 224
Server version: 5.5.13 MySQL Community Server (GPL)

Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

我不需要密码就能进入mysql命令行!

为什么会这样?


当前回答

这就是对我有效的方法:

Make sure no other MySQL process is running. To check this do the following: From the terminal, run this command: lsof -i:3306 If any PID is returned, kill it using kill -9 PID Go to System Preferences → MySQL → check if any MySQL instances are running, stop them. Start MySQL with the command: sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables The password for every user is stored in the mysql.user table under columns User and authentication_string respectively. We can update the table as: UPDATE mysql.user SET authentication_string='your_password' where User='root'

其他回答

要引用MySQL 8.0.15 +, password()函数不可用。使用下面的命令。

请使用

UPDATE mysql.user SET authentication_string='password' WHERE User='root';

MySQL 8

关闭MySQL服务器

进入系统首选项-> MySQL 单击停止MySQL服务器按钮

打开两个终端[命令行]窗口 在第一个终端窗口中运行以下命令:

mysqld_safe --skip-grant-tables

在第二个终端窗口中执行以下操作:

4.1. 登录MySQL

mysql -u root

4.2. 在MySQL提示符中执行如下命令:

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

4.3. 退出MySQL

exit;

回到第一个终端窗口并关闭mysqld_safe

5.1. 按CTRL + Z

5.2. 运行以下命令

mysqladmin -u root -p shutdown

5.3. 输入在4.2中设置的新密码。当提示。

启动MySQL服务器[见1.]

您可以手动关闭Mac上的MySQL,通过点击Apple菜单并打开系统首选项。选择“MySQL”首选项面板,然后点击“停止MySQL服务器”按钮停止Mac上的MySQL服务器。

停止MySQL后,需要执行以下步骤。

你需要在skip-grant-tables模式下启动MySQL sudo /usr/local/mysql/support-files / mysql。服务器启动——skip-grant-tables 在您的终端中,输入此命令以刷新现有权限 /usr/local/mysql/bin/mysql 现在需要修改用户密码 mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword' mysql >退出

然后,您可以转到Apple菜单并打开系统首选项。选择“MySQL”首选项面板,然后点击“停止MySQL服务器”按钮来停止Mac上的MySQL服务器。

最后,您可以再次进入Apple菜单并打开系统首选项。选择“MySQL”首选项面板,然后单击“启动MySQL服务器”按钮启动Mac上的MySQL服务器。

如果您不记得设置的root密码,需要重置密码,请执行以下步骤:

Stop the mysqld server, this varies per install Run the server in safe mode with privilege bypass sudo mysqld_safe --skip-grant-tables; In a new window connect to the database, set a new password and flush the permissions & quit: mysql -u root For MySQL older than MySQL 5.7 use: UPDATE mysql.user SET Password=PASSWORD('your-password') WHERE User='root'; For MySQL 5.7+ use: USE mysql; UPDATE mysql.user SET authentication_string=PASSWORD("your-password") WHERE User='root'; Refresh and quit: FLUSH PRIVILEGES; \q Stop the safe mode server and start your regular server back. The new password should work now. It worked like a charm for me :)


Note

运行 更新mysql。SET authentication_string=null WHERE user ='root'; 如果您不想为root用户设置密码。或者PASSWORD()函数不适合您。

mysqld_safe --skip-grant-tables
mysql -u root
UPDATE mysql.user SET authentication_string='yourpasswd' WHERE User='root';
FLUSH PRIVILEGES;
ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';

每次我的MacBook重启时,我都需要这样做。