This is just for test,not for the serious situation!
And I just find the solution to my problem yesterday.
The reason is that the selinux on my CentOS prevent httpd from visiting file.
Issus will be fine after I change the file's context label via chcon.May be this can be useful to you!
 
2010-11-17
49163653
发件人： Jussi Hirvi
发送时间： 2010-11-17  16:26:39
收件人： CentOS mailing list
抄送：
主题： Re: [CentOS] easy httpd's problem
On 16.11.2010 10.25, 49163653 wrote:
> <VirtualHost *:80>
>      ServerAdmin gitserver
>      DocumentRoot /
>      <Directory />
>          Options Indexes FollowSymLinks includes
>          order allow,deny
>          AllowOverride None
>          allow from all
>      </Directory>
>      ServerName dummy-host.example.com
>      ErrorLog logs/dummy-host.example.com-error_log
>      CustomLog logs/dummy-host.example.com-access_log common
> </VirtualHost>
You are publishing your entire machine through httpd. Is that really 
what you want?
- Jussi
-- 
Jussi Hirvi * Green Spot
Topeliuksenkatu 15 C * 00250 Helsinki * Finland
Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms)
jussi.hirvi@greenspot.fi * http://www.greenspot.fi
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