Linux 解決This system is not registered with RHN問題

RHEL下yum更新出現This system is not registered with RHN解決辦法

    說一下如何改用CentOS的yum軟體來升級未註冊的RHEL系統：

    首先 rpm -qa|grep yum  查看 yum 服務相關的包

    # rpm -qa|grep yum

    yum-security-1.1.16-13.el5_4.1

    yum-3.2.22-33.el5

    yum-updatesd-0.9-2.el5

    yum-metadata-parser-1.1.2-3.el5

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

    強制移除這一些包

    下載CentOS yum 服務相關的 rpm 包

    wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-3.2.22-39.el5.centos.noarch.rpm

    wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm

    wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.x86_64.rpm

    # rpm -ivh yum-*

    warning: yum-3.2.22-39.el5.centos.noarch.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

    Preparing…                ########################################### [100%]

    1:yum-metadata-parser    ########################################### [ 33%]

    2:yum-fastestmirror      ########################################### [ 67%]

    3:yum                    ########################################### [100%]

    哦了，安裝完畢，現在進入系統的yum目錄

    # cd /etc/yum.repos.d/

    # mv rhel-debuginfo.repo rhel-debuginfo.repo.bakup

    # mv rhel-source.repo rhel-source.repo.bakup

    # wget linuxtone.org/soft/lemp/CentOS-Base.repo">http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo   
（下載CentOS的repo包）

    # yum makecache

    等待 yum 庫更新完畢，就可以 yum 安裝軟體了