ユーザ追加方法
grant all privileges on *.* to monty@localhost identified by 'password' with grant option; grant all privileges on *.* to monty@'%' identified by 'password' with grant option;
- パスワード変更
# mysqladmin -u root -p12345 -hlocalhost password "56789"
mysql> SET PASSWORD FOR 'jeffrey'@'%' = PASSWORD('biscuit');