RHEL 6.0使用CentOS yum源
1、删除RHEL原有的yum
      rpm -aq|grep yum|xargs rpm -e --nodeps  #删除
2、下载新的yum安装包  #这里我们使用CentOS的yum源
    wget mirrors.163/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.arch.rpm
wget mirrors.163/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget mirrors.163/centos/6/os/x86_64/Packages/yum-3.2.s.noarch.rpm
wget mirrors.163/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.arch.rpm
3、安装yum软件包
rpm -ivh  python-iniparse-0.3.1-2.arch.rpm
rpm -ivh  yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
      rpm -ivh  yum-3.2.s.noarch.rpm  yum-plugin-fastestmirror-1.1.arch.rpm
      (这里要注意的是：最后两个安装包要放在一起同时安装，否则会提示相互依赖，安装失败。)
4、更改yum源  #我们使用网易的CentOS镜像源
cd /pos.d/
wget  mirrors.163/.po
po  #编辑文件
把文件里面的$releasever全部替换为版本号，即6 centos vim命令最后保存！
或者直接把下面的内存拷贝到po文件中即可
（已经修改好，不用下载直接新建po 也    可以）
# po
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[base]
name=CentOS-6 - Base - 163
baseurl=mirrors.163/centos/6/os/$basearch/
#mirrorlist=/?release=6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-6 - Updates - 163
baseurl=mirrors.163/centos/6/updates/$basearch/
#mirrorlist=/?release=6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-6 - Extras - 163
baseurl=mirrors.163/centos/6/extras/$basearch/
#mirrorlist=/?release=6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6 - Plus - 163
baseurl=mirrors.163/centos/6/centosplus/$basearch/
#mirrorlist=/?release=6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6 - Contrib - 163
baseurl=mirrors.163/centos/6/contrib/$basearch/
#mirrorlist=/?release=6&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=/centos/RPM-GPG-KEY-CentOS-6
5、收尾，测试YUM 是否可用
yum clean all    #清理yum缓存
yum makecache    #将服务器上的软件包信息缓存到本地,以提高搜索安装软件的速度
yum install vim*  #测试yum是否可用
PS:本文章参考
RHEL 6.0使用CentOS yum源 www.osyunwei/archives/162.html
Centos6.0 使用 网易源

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