转自http://blog.sina.com.cn/s/blog_50f908410101cto6.html

思路:卸载redhat自带yum,然后下载centosyum,安装后修改配置文件

 

1、首先到http://mirrors.163.com/centos下载软件包

 

x86 地址:http://mirrors.163.com/centos/6/os/i386/Packages/

x86_64 地址:http://mirrors.163.com/centos/6/os/x86_64/Packages/

必要下载的软件包有(以64位系统为例):

a  python-iniparse-0.3.1-2.1.el6.noarch.rpm

b  yum-3.2.29-40.el6.centos.noarch.rpm

c  yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

d  yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

下载命令:

wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.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

wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-40.el6.centos.noarch.rpm

wget  http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

[] :版本不一定要最新的

2、卸载RedHat自带的yum

 

      rpm -qa| grep yum | xargs rpm -e --nodeps

      注:axargs是一条Unix和类Unix操作系统的常用命令。它的作用是将参数列表转换成小块分段传递给其他命令,以避免参数列表过长的问题

          b--nodeps  强制卸载,不管依赖性

 

3、安装下载的centosyum包:

 

rpm -ivhpython-iniparse-0.3.1-2.1.el6.noarch.rpm

rpm -ivhyum-metadata-parser-1.1.2-16.el6.x86_64.rpm

rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpmyum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

 

[] :最后2个需要一起安装,否则会出现依赖性错误

 

4、到http://mirrors.163.com centos帮助文档 中下载CentOS6-Base-163.repo文件,存放到/etc/yum.repo.d

 

wgethttp://mirrors.163.com/.help/CentOS6-Base-163.repo

 

5、编辑CentOS6-Base-163.repo文件,将其中的$releasever更改为6,更改好

# CentOS-Base.repo

#

# 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.com

baseurl=http://mirrors.163.com/centos/6/os/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

 

#released updates

[updates]

name=CentOS-6 - Updates - 163.com

baseurl=http://mirrors.163.com/centos/6/updates/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

 

#additional packages that may be useful

[extras]

name=CentOS-6 - Extras - 163.com

baseurl=http://mirrors.163.com/centos/6/extras/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras

gpgcheck=1

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

 

#additional packages that extend functionality of existing packages

[centosplus]

name=CentOS-6 - Plus - 163.com

baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus

gpgcheck=1

enabled=0

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

 

#contrib - packages by Centos Users

[contrib]

name=CentOS-6 - Contrib - 163.com

baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contrib

gpgcheck=1

enabled=0

gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6


6yum clean all 清除原有缓存

7yum makecache  获取yum列表

出现下面提示,表示yum更改完成:

Metadata Cache Created