以下为配置文件/etc/yum.repos.d/rhel-media.repo
[base]
name=CentOS-5 - Base
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os
#baseurl=http://mirror.centos.org/centos/5/os/$basearch/
baseurl=http://vault.centos.org/5.11/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#released updates
[updates]
name=CentOS-5 - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/5/updates/$basearch/
baseurl=http://vault.centos.org/5.11/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#additional packages that may be useful
[extras]
name=CentOS-5 - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=extras
#baseurl=http://mirror.centos.org/centos/5/extras/$basearch/
baseurl=http://vault.centos.org/5.11/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-5 - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=centosplus
#baseurl=http://mirror.centos.org/centos/5/centosplus/$basearch/
baseurl=http://vault.centos.org/5.11/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#contrib - packages by Centos Users
[contrib]
name=CentOS-5 - Contrib
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=contrib
#baseurl=http://mirror.centos.org/centos/5/contrib/$basearch/
baseurl=http://vault.centos.org/5.11/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
更新yum源：
yum clean all
yum makecache
若makecache报错，导入新的GPG-KEY再执行一次即可搞定
rpm --import http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
redhat 6.5 配置网络yum源 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo sed -i 's/$releasever/6/g' /etc/yum.repos.d/CentOS-Base.repo yum clean all yum list
内容如下：
[base] name=CentOS-6 - Base - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6/os/$basearch/ http://mirrors.aliyuncs.com/centos/6/os/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/6/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#released updates [updates] name=CentOS-6 - Updates - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6/updates/$basearch/ http://mirrors.aliyuncs.com/centos/6/updates/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/6/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful [extras] name=CentOS-6 - Extras - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6/extras/$basearch/ http://mirrors.aliyuncs.com/centos/6/extras/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/6/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages [centosplus] name=CentOS-6 - Plus - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6/centosplus/$basearch/ http://mirrors.aliyuncs.com/centos/6/centosplus/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/6/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users [contrib] name=CentOS-6 - Contrib - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6/contrib/$basearch/ http://mirrors.aliyuncs.com/centos/6/contrib/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/6/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
