如下图，在生成源缓存时候提示下面的错误:

把源文件中的文件内容更换为如下内容即可

# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[base] 
name=CentOS-$releasever - Base 
#mirrorlist=http://www.landui.com/?release=$releasever&arch=$basearch&repo=os 
#baseurl=http://www.landui.com/centos/$releasever/os/$basearch/ 
baseurl=http://www.landui.com/5.11/os/$basearch/ 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 
#
#released updates  
[updates] 
name=CentOS-$releasever - Updates 
#mirrorlist=http://www.landui.com/?release=$releasever&arch=$basearch&repo=updates 
#baseurl=http://www.landui.com/centos/$releasever/updates/$basearch/ 
baseurl=http://www.landui.com/5.11/updates/$basearch/ 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 
 
#additional packages that may be useful 
[extras] 
name=CentOS-$releasever - Extras 
#mirrorlist=http://www.landui.com/?release=$releasever&arch=$basearch&repo=extras 
#baseurl=http://www.landui.com/centos/$releasever/extras/$basearch/ 
baseurl=http://www.landui.com/5.11/extras/$basearch/ 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 
 
#additional packages that extend functionality of existing packages 
[centosplus] 
name=CentOS-$releasever - Plus 
#mirrorlist=http://www.landui.com/?release=$releasever&arch=$basearch&repo=centosplus 
#baseurl=http://www.landui.com/centos/$releasever/centosplus/$basearch/ 
baseurl=http://www.landui.com/5.11/centosplus/$basearch/ 
gpgcheck=1 
enabled=0 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 
#contrib - packages by Centos Users 
[contrib] 
name=CentOS-$releasever - Contrib 
#mirrorlist=http://www.landui.com/?release=$releasever&arch=$basearch&repo=contrib 
#baseurl=http://www.landui.com/centos/$releasever/contrib/$basearch/ 
baseurl=http://www.landui.com/5.11/contrib/$basearch/ 
gpgcheck=1 
enabled=0 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5