yum源搭建
http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/yum-arch-2.2.2-1.el5.rf.noarch.rpm
http://down.51cto.com/data/412514 （centos-yumconf-4-4.5.noarch.rpm.tar.gz）
# rpm -ivh centos-yumconf-4-4.5.noarch.rpm
# rpm -ivh yum-2.4.3-4.el4.centos.noarch.rpm
# mount /dev/cdrom /media/cdrom
# rpm -ivh /media/cdrom/Server/yum-metadata-parser-1.1.2-3.el5.noarch.rpm
# vi /etc/yum.repos.d/CentOS-Base.repo
[base]
name=Red Hat Enterprise Linux $releasever -Base
mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os
baseurl=http://mirror.centos.org/centos/5/os/$basearch/
gpgcheck=0 （原为1）
[update]
name=Red Hat Enterprise Linux $releasever -Updates
mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os
baseurl=http://mirror.centos.org/centos/5/updates/$basearch/
gpgcheck=0
[extras]
name=Red Hat Enterprise Linux $releasever -Extras
mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os
baseurl=http://mirror.centos.org/centos/5/extras/$basearch/
gpgcheck=0
[addons]
name=Red Hat Enterprise Linux $releasever -Addons
mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os
baseurl=http://mirror.centos.org/centos/5/addons/$basearch/
gpgcheck=0
:wq
# yum clean all 清除缓存及旧的包
# yum install httpd 测试是否能安装软件
注：CentOS-Base.repo中的5为系统版本号，原为$releaseserver,要自己改下
本文转自linux博客51CTO博客，原文链接http://blog.51cto.com/yangzhiming/863667如需转载请自行联系原作者
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