#Tạo user
mysql>
CREATE USER 'admin'@'%' IDENTIFIED BY 'admin';
# Gán quyền
mysql>
GRANT ALL PRIVILEGES ON * . * TO 'admin'@'%';
#gan toàn quyền
UPDATE mysql.user SET Grant_priv = 'Y', Super_priv = 'Y' WHERE User = 'admin';
# reload
flush privileges;