报错Access denied for user 'root'@'localhost' (using password: YES) 参考一 参考二
登陆mysql时，root密码的修改
参考帖子http://blog.csdn.net/jiedushi/article/details/6663177
crontab定时任务不执行，原因查找 http://www.linuxeye.com/Linux/2248.html