Enter MYSQL database
use mysql
Add authorized 192.168.*.* user root to access all server databases;
grant all privileges on *.* to'root'@'192.168.%.%' identified by'pure111@111' with grant option;
Refresh execution
flush privileges;
Check the information (is it OK)
select Host,User from user;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'120.111.%.%' IDENTIFIED BY 'pure111@1119' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'202.111.%.%' IDENTIFIED BY 'pure111@111' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'202.111.111.111' IDENTIFIED BY 'pure111@111' WITH GRANT OPTION;
Show database name
show databases;
show tables；
MySQL authorizes user login ip segment
172.16.1.0/24
GRANT ALL PRIVILEGES ON *.* TO test@'172.16.1.%' identified by 'test123456' 即可。172.16.0.0/16
GRANT ALL PRIVILEGES ON *.* TO test@'172.16.%' identified by 'test123456' 即可。MySQL authorization method for a certain type (a certain field opened) database
Databases beginning with bbs_
grant all on `bbs_%`.* to test@'172.16.1.3' identified by 'test123456';