Mysql Fails on MAC

Mysql Fails on MAC

Today, I plan to use mysql database. But I find it does not start. I am facing the Error Message as follow:

Error Message:
sudo /usr/local/mysql/support-files/mysql.server start
Starting MySQL
..................................................................................................... ERROR! The server quit without updating PID file (/usr/local/mysql/data/ip-10-10-21-204.ec2.internal.pid).

Solution:
I tried some other things to change the configuration, permission and etc.

But I finally succeed by upgrading the version of MySQL.

References:
http://stackoverflow.com/questions/25954230/mysql-does-not-start-in-osx-yosemite-10-10