CDH installation cannot be activated

I just removed the host name in the first line of the hosts file! ! ! ! !

#127.0.0.1这一行不能有其他东西！
127.0.0.1    localhost
192.168.0.128    csuthdfs128vl
192.168.0.129    csuthdfs129vl
192.168.0.130    csuthdfs130vl
192.168.0.131    csuthdfs131vl
192.168.0.132    csut2pgs132vl

Do not know the specific reason!