???? redhat默認不支持第三方的yum源，要求有rhn賬號，下面就rhel5和rhel6改為centos源

一、rhel5.5 X86_64更改為centos的yum源

查看系統自帶的yum相關的rpm包

?rpm?-qa|grep?yum

刪掉系統自帶的yum相關的包

rpm?-e?--nodeps?yum-updatesd-0
rpm?-e?--nodeps?yum-security??
rpm?-e?--nodeps?yum-metadata-p
rpm?-e?--nodeps?yum-rhn-plugin

安裝163yum包,三個yum包有依賴關系，需要一起安裝

wget??http://mirrors.163.com/centos/5/os/x86_64/CentOS/python-iniparse-0.2.3-6.el5.noarch.rpm????
wget?http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm
wget??????????
wget?
rpm?-ivh?python-iniparse-0.2.3-6.el5.noarch.rpm??
rpm?-ivh??yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm?yum-3.2.22-40.el5.centos.noarch.rpm?yum-metadata-parser-1.1.2-4.el5.x86_64.rpm

在/etc/yum.repos.d下將原有的repo文件重命名，新建一個Base.repo

[base]
name=Red?Hat?Enterprise?Linux?$releasever?-?Base
baseurl=http://mirror.centos.org/centos/5/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5#released?updates
[updates]
name=Red?Hat?Enterprise?Linux?$releasever?-?Updates
baseurl=http://mirror.centos.org/centos/5/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5#packages?used/produced?in?the?build?but?not?released
[addons]
name=Red?Hat?Enterprise?Linux?$releasever?-?Addons
baseurl=http://mirror.centos.org/centos/5/addons/$basearch/
pgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5#additional?packages?that?may?be?useful
[extras]
name=Red?Hat?Enterprise?Linux?$releasever?-?Extras
baseurl=http://mirror.centos.org/centos/5/extras/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5#additional?packages?that?extend?functionality?of?existing?packages
[centosplus]
name=Red?Hat?Enterprise?Linux?$releasever?-?Plus
baseurl=http://mirror.centos.org/centos/5/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5#contrib?-?packages?by?Centos?Users
[contrib]
name=Red?Hat?Enterprise?Linux?$releasever?-?Contrib
baseurl=http://mirror.centos.org/centos/5/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

這里也可以使用mirrors.163.com或者mirrors.aliyun.com的yum源， rhel6則以163yum源為例，導入key

rpm?--import?http://mirror.centos.org/centos/5/os/x86_64/RPM-GPG-KEY-CentOS-5

生成緩存

yum?clean?all
yum?makecache

如果配置成功則會提示加載成功


二、redhat6.4 X86_64更改為centos的yum源

刪除原有的yum相關的rpm包

?rpm?-qa|grep?yumrpm?-e?--nodeps?yum-rhn-pluginrpm?-e?--nodeps?yum-metadata-parserrpm?-e?--nodeps?yum-utilsrpm?-e?--nodeps?yum-plugin-securityrpm?-e?--nodeps?rhn-check

下載安裝包并安裝

mkdir?-p?/server/toolscd?/server/tools/wget?http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpmwget?http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-69.el6.centos.noarch.rpmwget?http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpmwget?http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpmrpm?-ivh?python-iniparse-0.3.1-2.1.el6.noarch.rpm?rpm?-ivh?yum-3.2.29-69.el6.centos.noarch.rpm?yum-metadata-parser-1.1.2-16.el6.x86_64.rpm?yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm

重命名原有自帶的repo文件，并下載163的repo文件

?cd?/etc/yum.repos.d/mv?rhel-source.repo?rhel-source.repo.bakwget?http://mirrors.163.com/.help/CentOS6-Base-163.reporpm?--import?http://mirrors.163.com/centos/6/os/x86_64/RPM-GPG-KEY-CentOS-6sed?-i?'s#$releasever#6#g'?CentOS6-Base-163.repo

清空緩存，并重新生成

?yum?clean?allyum?makecache

如果配置阿里的yum源，則可以加入如下命令

wget?-O?/etc/yum.repos.d/CentOS-Base.repo?http://mirrors.aliyun.com/repo/Centos-6.repo

至此rhel6配置centos源配置完成