mysqladmin -h127.0.0.1 -P3307 -uroot -p shutdown

mysqladmin -h127.0.0.1 -P3307 -uroot -p ping

my_print_defaults mysqld_multi -s

--mysqld=/usr/bin/mysqld_safe
--mysqladmin=/usr/bin/mysqladmin
--user=multi_admin
--password=yy

my_print_defaults mysqld_multi
--mysqld=/usr/bin/mysqld_safe
--mysqladmin=/usr/bin/mysqladmin
--user=multi_admin
--password=*****

[mysqld_multi]
mysqld     = /usr/bin/mysqld_safe
mysqladmin = /usr/bin/mysqladmin
user       = multi_admin
pass       = pass123