【保姆级喂饭教程】MySQL修改用户对应IP范围

前言

之前创建了一个本地MySQL用户，后续需要分享给同事，所以就需要修改对应ip限制，做个小总结

一、创建用户

-- 创建本地用户
CREATE USER 'python'@'localhost' IDENTIFIED BY 'password';

权限相关表介绍：
MySQL中有三张用户权限相关表，都在基本的mysql数据库中

• user：用户权限表
• db：数据库权限表
• tables_priv：数据表权限表

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二、设置权限

设置访问某个数据库的权限

-- 授权常用权限
GRANT CREATE, DROP, ALTER, INDEX, SELECT, INSERT, UPDATE, DELETE ON mydatabase.* TO 'python'@'localhost';
-- 刷新权限
FLUSH PRIVILEGES;

所有权限：MySQL官网权限列表

Privilege	Grant Table Column	Context
ALL [PRIVILEGES]	Synonym for “all privileges”	Server administration
ALTER	Alter_priv	Tables
ALTER ROUTINE	Alter_routine_priv	Stored routines
CREATE	Create_priv	Databases, tables, or indexes
CREATE ROUTINE	Create_routine_priv	Stored routines
CREATE TABLESPACE	Create_tablespace_priv	Server administration
CREATE TEMPORARY TABLES	Create_tmp_table_priv	Tables
CREATE USER	Create_user_priv	Server administration
CREATE VIEW	Create_view_priv	Views
DELETE	Delete_priv	Tables
DROP	Drop_priv	Databases, tables, or views
EVENT	Event_priv	Databases
EXECUTE	Execute_priv	Stored routines
FILE	File_priv	File access on server host
GRANT OPTION	Grant_priv	Databases, tables, or stored routines
INDEX	Index_priv	Tables
INSERT	Insert_priv	Tables or columns
LOCK TABLES	Lock_tables_priv	Databases
PROCESS	Process_priv	Server administration
PROXY	See proxies_priv table	Server administration
REFERENCES	References_priv	Databases or tables
RELOAD	Reload_priv	Server administration
REPLICATION CLIENT	Repl_client_priv	Server administration
REPLICATION SLAVE	Repl_slave_priv	Server administration
SELECT	Select_priv	Tables or columns
SHOW DATABASES	Show_db_priv	Server administration
SHOW VIEW	Show_view_priv	Views
SHUTDOWN	Shutdown_priv	Server administration
SUPER	Super_priv	Server administration
TRIGGER	Trigger_priv	Tables
UPDATE	Update_priv	Tables or columns
USAGE	Synonym for “no privileges”	Server administration

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三、修改IP

1. 直接更新权限表

UPDATE mysql.user SET host='%' WHERE user='python' AND host='localhost';
FLUSH PRIVILEGES;

这样更新完以后，同事进行登录，只能看到一个information_schema数据库，看不到其他数据库，因为db表中python的host还是localhost
需要再修改db表：

UPDATE mysql.db SET host='%' WHERE user='python' AND host='localhost';
FLUSH PRIVILEGES;

如果设置了单张表的权限还需要再修改tables_priv表

UPDATE mysql.tables_priv SET host='%' WHERE user='python' AND host='localhost';
FLUSH PRIVILEGES;

2. 使用 RENAME USER 命令

-- 更规范的修改方式（MySQL 5.0.2+支持）
RENAME USER 'python'@'localhost' TO 'python'@'%';

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参考文献

• mysql grant 用户权限总结
• MySQL指定IP登录配置方法的完整步骤

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