http://www.kancloud.cn/digest/mysqlsummary/132842
http://crazy123.blog.51cto.com/1029610/1611887/
http://blog.chinaunix.net/uid-20639775-id-3438560.html
http://crazy123.blog.51cto.com/1029610/1611887/
/data/usr/local/mysql/bin/mysqladmin -uroot -p123456 -S /data/dbdata/mysql/3307/mysql.sock shutdown
/bin/sh /data/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata/mysql/3307/my.cnf 2>&1 > /dev/null &
/data/usr/local/mysql/bin/mysql -uroot -p --socket=/data/dbdata/mysql/3307/mysql3307.sock