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?
当您登录MySQL终端时,请尝试执行FLUSH PRIVILEGES命令。如果这不起作用,请在MySQL终端中尝试以下命令集
mysql -u root
mysql> USE mysql;
mysql> UPDATE user SET password=PASSWORD("NEWPASSWORD") WHERE User='root';
mysql> FLUSH PRIVILEGES;
mysql> quit
用你想要的任何密码更改NEWPASSWORD。应该都准备好了!
更新:从MySQL 5.7开始,密码字段被重命名为authentication_string。修改密码时,使用以下查询来修改密码。所有其他命令保持不变:
mysql> UPDATE user SET authentication_string=PASSWORD("NEWPASSWORD") WHERE User='root';
请不要使用MySQL 8.0+
mysql> UPDATE mysql.user SET authentication_string='password' WHERE User='root';
因为它覆盖了authentication_string,它应该是一个哈希而不是纯文本,而是使用:
mysql> `ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';`
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。