日志：
Version: '5.0.13-rc-nt' socket: '' port: 3306 Official MySQL binary
InnoDB: Error: trying to create a MySQL system table mysql/user of type InnoDB.
InnoDB: MySQL system tables must be of the MyISAM type!
160516 18:53:19 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
