Gán quyền cho user, host vào

grant all privileges on database.table_name to username@'host' identified by 'password';

List user, host

SELECT User, Host, Password FROM mysql.user;

Xóa bớt user

DROP USER 'user'@'host';

Limit

CREATE USER 'francis'@'localhost' IDENTIFIED BY 'frank';

GRANT ALL ON customer.* TO 'francis'@'localhost'
    ->     WITH MAX_QUERIES_PER_HOUR 20
    ->          MAX_UPDATES_PER_HOUR 10
    ->          MAX_CONNECTIONS_PER_HOUR 5
    ->          MAX_USER_CONNECTIONS 2;

Dump mysql database

mysqldump -uroot -p database > ~/bak/database.sql

Restore mysql database

mysql -uroot -p database < ~/bak/database.sql