首先使用root用户登录mysql（或者有操作权限的用户），然后切换到名称为mysql的数据库
> mysql -h192.168.1.1 -uroot -p123456 mysql> use mysql;
添加用户
mysql> create user test_user identified by '123456'; mysql> select host,user,password from user where user = 'test_user'; +------+-----------+-------------------------------------------+| host | user | password |+------+-----------+-------------------------------------------+| % | test_user | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |+------+-----------+-------------------------------------------+
用户授权
mysql> grant all privileges on *.* to test_user@'%' identified by '123456'; mysql> flush privileges; # 如果需要指定限制访问的IP段，或者指定访问的数据库mysql> grant all privileges on test_db.* to root@'10.20.30.%' identified by '123456';mysql> flush privileges;
用户撤权，revoke 跟 grant 的语法差不多，只需要把关键字 “to” 换成 “from” 即可：
mysql> revoke all on test_db.* from root@'10.20.30.%' identified by '123456';
修改密码
mysql> update mysql.user set password = password('654321') where user = 'test_user' and host = '%';
mysql> flush privileges;删除用户
mysql> drop user test_user@'%';
作者：JouyPub
链接：https://www.jianshu.com/p/a1be64fad3bb
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