mysql创建用户以及赋予权限

小熊officer2025-12-02 12:08

1.对单个数据库只读

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CREATE USER 'reader'@'%' IDENTIFIED BY 'secure_password123';
GRANT SELECT ON your_database.* TO 'reader'@'%';
FLUSH PRIVILEGES;

2.对所有数据库只读

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CREATE USER 'global_reader'@'%' IDENTIFIED BY 'secure_password123';
GRANT SELECT ON *.* TO 'global_reader'@'%';
FLUSH PRIVILEGES;

3.对特定表的只读

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CREATE USER 'table_reader'@'%' IDENTIFIED BY 'secure_password123';
GRANT SELECT ON database_name.table_name TO 'table_reader'@'%';
FLUSH PRIVILEGES;

4.限制用户只能从特定IP访问

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CREATE USER 'secure_reader'@'192.168.1.100' IDENTIFIED BY 'secure_password123';
GRANT SELECT ON database_name.* TO 'secure_reader'@'192.168.1.100';
FLUSH PRIVILEGES;

5.修改用户密码

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SET PASSWORD FOR 'username'@'host' = 'new_password';

6.授予权限

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-- 授予所有权限（慎用）
GRANT ALL PRIVILEGES ON *.* TO 'username'@'host' WITH GRANT OPTION;

-- 授予特定数据库的所有权限
GRANT ALL PRIVILEGES ON database_name.* TO 'username'@'host';