1、刪除rhel自帶的yum源
# rpm -aq | grep yum|xargs rpm -e --nodeps
2、下載新的yum安裝包
wget http://mirrors.163.com/CentOS/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-69.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
3、安裝yum包,注意的是標紅的必須一起裝,有依賴關系
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm yum-3.2.29-69.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
4、更改成163的yum源
# cd /etc/yum.repos.d/
# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
# ls
CentOS6-Base-163.repo
把文件裡面的$releasever全部替換為版本號,即6
# sed -i 's#$releasever#6#g' CentOS6-Base-163.repo
5、清除yum緩存
# yum clean all
# yum makecache #將服務器上的軟件包信息緩存到本地,以提高搜索安裝軟件的速度