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通过grant [aɪ'dɛntɪfaɪd] 命令创建用户并授权

  • grant命令简单语法

grant all privileges on dbname.* to username@localhost identified by ‘password’; # 创建用户并授权

列表说明参数:

grant all privileges on dbname.* to username@localhost identified by ‘password’
授权命令 对应权限 目标:库和表 用户名和客户端主机 用户密码

说明:上述命令是授权localhost主机上通过username管理dbname数据库的所有权限,密码为password。其中username,dbname,password根据业务情况自行修改。

  • create和grant配合方法创建用户并授权

CREATE USER 'jeffrey'@'localhost' IDENTIFIED BY 'password'; # 创建用户 grant all privileges on test.* to 'jeffrey'@'localhost'; # 给用户授权 show grants for 'jeffrey'@'localhost'; # 查看用户权限明细
  • 授权局域网内主机远程连接数据库:


    根据grant命令语法,我们知道'jeffrey'@'localhost'位置为授权访问数据库的主机,localhost可以使用域名,IP地址或者IP段来替代,因此,要授权局域网内主机可以通过如下方法实现:

grant all on *.* to username@'192.168.1.%' identified by 'password'; # 百分号匹配 grant all on *.* to username@'192.168.1.0/255.255.255.0' identified by 'password'; # 子网掩码配置
  • 删除MySQL用户

DROP USER 'jeffrey'@'localhost';

MySQL用户可以授权的权限有哪些?

insert, select, update, delete, create, drop, references, index, alter, create temporary tables, lock tables, execute, create view, show view, create routine, alter routine, event, trigger

创建一个数据库备份用户权限

grant SELECT, RELOAD, SHOW DATABASES, LOCK TABLES, REPLICATION CLIENT, EVENT,TRIGGER ON *.* TO 'back_user'@'Host' IDENTIFIED BY 'Password'; flush privileges;

权限列表

  1. SELECT 读取

  2. SHOW DATABASES 允许访问完整的数据库列表

  3. LOCK TABLES 允许锁定表

  4. RELOAD 允许载入和刷新服务器缓存

  5. REPLICATION CLIENT 允许用户询问从属服务器或主服务器的地址

  6. EVENT 允许执行事务

  7. TRIGGER 触发器相关的权限


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