1、卸載自身yum
# rpm -aq|grep yum|xargs rpm -e --nodeps

2、安裝 centos 的YUM
rpm -ivh http://mirrors.163.com/centos/6.2/os/i386/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh ?http://mirrors.163.com/centos/6.2/os/i386/Packages/yum-metadata-parser-1.1.2-16.el6.i686.rpm
rpm -ivh http://mirrors.163.com/centos/6.2/os/i386/Packages/yum-3.2.29-22.el6.centos.noarch.rpm http://mirrors.163.com/centos/6.2/os/i386/Packages/yum-plugin-fastestmirror-1.1.30-10.el6.noarch.rpm
注意后面兩個是相互依賴的，所以要一起裝


3、更新源
cd /etc/yum.repos.d/
新建個文件CentOS-Base.repo
vi CentOS-Base.repo


內容如下：
[base]
name=CentOS-6.2 - Base
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?
#released updates
[updates]
name=CentOS-6.2 - Updates
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?


#packages used/produced in the build but not released
[addons]
name=CentOS-6.2 - Addons
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?


#additional packages that may be useful
[extras]
name=CentOS-6.2 - Extras
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.2 ¨C Plus
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?
#contrib - packages by Centos Users
[contrib]
name=CentOS-6.2 - Contrib
baseurl=http://mirrors.163.com/centos/6.2/os/$basearch/
http://mirrors.163.com/centos/6.2/os/$basearch/
gpgcheck=0
gpgkey=http://mirrors.163.com/centos/6.2/os/i386/RPM-GPG-KEY-CentOS-6?
之后就OK了

或者

重點推薦國內的centos6源
http://mirrors.163.com/centos/6/os/x86_64/
是163的，速度很快，ping的延時基本在30ms以下，完全可以用來直接裝系統了，上面這個是64位的系統，
可以直接用在yum源的baseurl后面
http://mirrors.163.com/centos/6/os/i386/
這個是32位的
其他的linux系統也都有，包括
fedora debian ubuntu openSUSE FreeBSD slackware
已經很全了，國內重點推薦
不過軟件比較少，比如mplayer，rar等等，都不全
下面推薦幾個外網的yum源
速度比較慢，但是軟件全，幾乎所有用到的常用軟件都可以直接yum安裝
奧地利?維也納大學FTP (支持yum install mplayer)
這幾個的延時基本在400ms-800ms，有時連接比較慢，下載速度在20ks左右，可以作為補充

注：其中奧地利 維也納大學ftp 上有mplayer ,支持yum install mplayer.現貼上我的kk.repo文檔設置內容：

[Server] name = Server enabled = 1 gpgcheck = 0 baseurl = file:///mnt/rhel6/Server/ [163Centos6] name = Centos6.0 enabled = 1 gpgcheck = 0 baseurl=http://mirrors.163.com/centos/6/os/i386/[163updates] name = 163Updates enabled = 1 gpgcheck = 0 baseurl=http://mirrors.163.com/centos/6/updates/i386/[ftp] name = univie ftp enabled =1 gpgcheck =0 baseurl=ftp://ftp.univie.ac.at/systems/linux/dag/redhat/el6/en/i386/dag/

每5小時更新一次

http://mirrors.163.com/.help/centos.html

yum地址2

裝xen是用這個好使，

[base]
name=CentOS-5 - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever5&arch=$basearch&
repo=os
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
baseurl=http://ftp.sjtu.edu.cn/centos/5/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#released updates
[update]
name=CentOS-5 - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=updates
baseurl=http://ftp.sjtu.edu.cn/centos/5/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#packages used/produced in the build but not released
[addons]
name=CentOS-5 - Addons
#mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=addons

baseurl=http://ftp.sjtu.edu.cn/centos/5/addons/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#additional packages that may be useful
[extras]
name=CentOS-5 - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=extras

baseurl=http://ftp.sjtu.edu.cn/centos/5/extras/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-5 - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=centosplus
baseurl=http://ftp.sjtu.edu.cn/centos/5/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#contrib - packages by Centos Users
[contrib]
name=CentOS-5 - Contrib
#mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=contrib
baseurl=http://ftp.sjtu.edu.cn/centos/5/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

總結

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