redhat默認自帶的yum源需要註冊付費才能更新,而centos的yum源是免費的,爲了使用方便我們把red hat的yum源改成centos的網易的yum源。
1、卸載red hat的yum
rpm -qa|grep yum|xargs rpm -e --nodeps
2、下載centos的yum
64位
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
32位
wget http://mirrors.163.com/centos/6/os/i386/Packages/yum-3.2.29-81.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6/os/i386/Packages/yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/i386/Packages/yum-metadata-parser-1.1.2-16.el6.i686.rpm
3、安裝centos yum
64位
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm yum-3.2.29-81.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm --force --nodeps
32位
rpm -ivh yum-metadata-parser-1.1.2-16.el6.i686.rpm yum-3.2.29-81.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm --force --nodeps
cd /etc/yum.repos.d/ #進入到yum配置文件目錄
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo #下載CentOS配置文件
vi CentOS6-Base-163.repo #編輯配置文件
:%s/$releasever/6/g #把$releasever替換成現有系統的版本號(6)
yum clean all #清除yum緩存
yum makecache #更新yum緩存
yum update #更新系統
5、驗證