RedRat Enterprise Linux 5.4用CentOS 5.5 yum源替换

要使用CentOS的源，就得将RHEL的更新源移除，或是禁用掉，并且需要将RHEL5自带的YUM工具删除。

#cd /etc/yum.repos.d

#mv rhel-debuginfo.repo rhel-debuginfo.repo.bak

此处将其备份起来，供意外恢复时使用，删除?rhel-debuginfo.repo。如有其他的相关的源设置，都要删除，

或是采用以上方法备份。删除RHEL5自带的YUM及YUM组件：

使用rpm -qa | grep yum列出所有相关的包，把它们都删掉，如果因依赖性不能删除，就使用–nodeps参数删除。

用rpm -qa | grep yum再次查看，如果都没有，就说明都卸载完毕。

下面就可以来进行CentOS源的设置了：

首先，我们需要下载安装CentOS的YUM工具：

yum-3.2.22-26.el5.centos.noarch.rpm 下载地址：?http://centos.ustc.edu.cn/centos/5.5/os/i386/CentOS/yum-3.2.22-26.el5.centos.noarch.rpm

??yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm 下载地址： http://centos.ustc.edu.cn/centos/5.5/os/i386/CentOS/yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm

??yum-metadata-parser-1.1.2-3.el5.centos.i386.rpm 下载地址： ?http://centos.ustc.edu.cn/centos/5.5/os/i386/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.i386.rpm

以上三个都要加?–nodeps 安装。?

然后复制CentOS5.5的/etc/yum.repos.d下的有且仅有两个的CentOS-Media.repo和CentOS-Base.repo到RedHat Enterprise 5.4相同的目录下。

省的大家再去装CentOS5.5我把这两个文件的内容复制出来，只要保存为同名文件放到/etc/yum.repos.d即可。

?CentOS-Base.repo的内容：

?# 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-$releasever – Base
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#released updates
[updates]
name=CentOS-$releasever – Updates
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#packages used/produced in the build but not released
[addons]
name=CentOS-$releasever – Addons
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=addons
#baseurl=http://mirror.centos.org/centos/$releasever/addons/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

#additional packages that may be useful
[extras]
name=CentOS-$releasever – Extras
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
#baseurl=http://mirror.centos.org/centos/$releasever/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-$releasever – Plus
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
#baseurl=http://mirror.centos.org/centos/$releasever/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-$releasever – Contrib
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
#baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

CentOS-Media.repo的内容如下：

# CentOS-Media.repo
#
# This repo is used to mount the default locations for a CDROM / DVD on
# CentOS-5. You can use this repo and yum to install items directly off the
# DVD ISO that we release.
#
# To use this repo, put in your DVD and use it with the other repos too:
# yum –enablerepo=c5-media [command]
#
# or for ONLY the media repo, do this:
#
# yum –disablerepo=\* –enablerepo=c5-media [command]

[c5-media]
name=CentOS-$releasever – Media
baseurl=file:///media/CentOS/
        file:///media/cdrom/
        file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

在保存完到相应的目录下后：

替换?CentOS-Base.repo中的$releasever为5.5,保存，运行yum -y update就可以更新了。简单吧(*^__^*) 嘻嘻……
以下是我更新的解图：

??

warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897

?

这是由于yum没有安装相应版本的GPG keys造成的。

必须要从CentOS5.5的?/etc/pki/rpm-gpg/下所有文件替换掉RedHat的/etc/pki/rpm-gpg/所有文件。

CentOS的/?etc/pki/rpm-gpg/下只有RPM-GPG-KEY-beta和RPM-GPG-KEY-CentOS-5

?RPM-GPG-KEY-beta的内容是：

?

—–BEGIN PGP PUBLIC KEY BLOCK—–
Version: GnuPG v1.2.6 (GNU/Linux)
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=mH0S
—–END PGP PUBLIC KEY BLOCK—–

RPM-GPG-KEY-CentOS-5的内容是：

?—–BEGIN PGP PUBLIC KEY BLOCK—–
Version: GnuPG v1.2.6 (GNU/Linux)
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=o/Mx
—–END PGP PUBLIC KEY BLOCK—–

拷到RedHat的相应目录下后，终端运行?#rpm –import /etc/pki/rpm-gpg/RPM*

再运行yum -y update，?就OK了。

?

可以看到采用CentOS的yum源，全部更新完后桌面也变成的CentOS默认的壁纸o(╯□╰)o