This article brings you an introduction to the method of creating users and authorization in MySQl (code examples). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Permission management:
How to create a user and password
Authorize the current user
Remove the permissions of the current user
First go to the mysql database:
mysql> use mysql Database changed
Secondly, add, delete, and modify the new user:
1.创建用户: # 指定ip:192.118.1.1的chao用户登录 create user 'chao'@'192.118.1.1' identified by '123'; # 指定ip:192.118.1.开头的chao用户登录 create user 'chao'@'192.118.1.%' identified by '123'; # 指定任何ip的chao用户登录 create user 'chao'@'%' identified by '123'; 2.删除用户 drop user '用户名'@'IP地址'; 3.修改用户 rename user '用户名'@'IP地址' to '新用户名'@'IP地址'; 4.修改密码 set password for '用户名'@'IP地址'=Password('新密码');
Then, authorize the current user
#查看权限 show grants for '用户'@'IP地址' #授权 chao用户仅对db1.t1文件有查询、插入和更新的操作 grant select ,insert,update on db1.t1 to "chao"@'%'; # 表示有所有的权限,除了grant这个命令,这个命令是root才有的。chao用户对db1下的t1文件有任意操作 grant all privileges on db1.t1 to "chao"@'%'; #chao用户对db1数据库中的文件执行任何操作 grant all privileges on db1.* to "chao"@'%'; #chao用户对所有数据库中文件有任何操作 grant all privileges on *.* to "chao"@'%'; #取消权限 # 取消chao用户对db1的t1文件的任意操作 revoke all on db1.t1 from 'chao'@"%"; # 取消来自远程服务器的chao用户对数据库db1的所有表的所有权限 revoke all on db1.* from 'chao'@"%"; 取消来自远程服务器的chao用户所有数据库的所有的表的权限 revoke all privileges on *.* from 'chao'@'%';
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