1、刪除redhat原有的yum源# rpm -aq | grep yum|xargs rpm -e --nodeps2、下載新的yum安裝包
這裏我們使用CentOS的yum源
# wget http://mirror.centos.org/centos/6.0/os/i386/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm# wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-metadata-parser-1.1.2-14.1.el6.i686.rpm
# wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-3.2.27-14.el6.centos.noarch.rpm
# wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-plugin-fastestmirror-1.1.26-1.el6.noarch.rpm
有些包的版本號可能已經改變，如果下載不了，直接上網站查找rpm列表。
3、安裝yum軟件包# rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
# rpm -ivh yum-metadata-parser-1.1.2-14.1.el6.i686.rpm
# rpm -ivh yum-3.2.27-14.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm
注意：最後兩個安裝包要放在一起同時安裝，否則會提示相互依賴，安裝失敗。
4、更改yum源 #我們使用網易的CentOS鏡像源# cd /etc/yum.repos.d/# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo