Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
我第一次用sudo mysqld start啓動的時候，報錯是上面那個，我查了一下stackoverflow發現，mac下的啓動要用mysql.server 那個命令
但是我之後使用sudo mysql.server那個命令，又報錯
[ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
2014-01-31 00:03:03 13223 [Note] InnoDB: The InnoDB memory heap is disabled
查了一下，發現是文件權限問題具體回答見http://stackoverflow.com/questions/21470193/mysql-server-start-issues-on-mavericks
這個