1：删除RHEL原有的YUM
rpm -qa|grep yum|xargs rpm -e --nodeps
2：下载centos的YUM包
wget http://mirror.centos.org/centos-6/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
wget http://mirror.centos.org/centos-6/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirror.centos.org/centos-6/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm
wget http://mirror.centos.org/centos-6/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm
wget http://mirror.centos.org/centos-6/6/os/x86_64/RPM-GPG-KEY-CentOS-6
wget http://mirror.centos.org/centos-6/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm
3：安装centos YUM包
rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm --import RPM-GPG-KEY-CentOS-6
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
rpm -Uvh python-urlgrabber-3.9.1-11.el6.noarch.rpm
rpm -ivh yum-3.2.29-81.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm
4：配置国内的YUM源
cd /etc/yum.repos.d
mv redhat.repo redhat.repo.bak
mv rhel-source.repo rhel-source.repo.bak
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
5：修改repo文件内容：
#----------------------------------------------------------------------------------------
# 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-6 - Base - 163.com
baseurl=http://mirrors.163.com/centos/6/os/x86_64/
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-6 - Updates - 163.com
baseurl=http://mirrors.163.com/centos/6/updates/x86_64
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=updates
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-6 - Extras - 163.com
baseurl=http://mirrors.163.com/centos/6/extras/x86_64/
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=extras
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6 - Plus - 163.com
baseurl=http://mirrors.163.com/centos/6/centosplus/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6 - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#----------------------------------------------------------------------------------------