由於redhat 的更新包只對注冊的用戶生效，所以需要自己手動更改成CentOS 的更新包，
CentOS幾乎和redhat是一樣的，所以無需擔心軟件包是否可安裝，下面是安裝步驟。
1、首先查看redhat 7.0系統本身所安裝的那些yum 軟件包： [root@pan ~]# rpm -qa | grep yum yum-utils-1.1.31-24.el7.noarch yum-langpacks-0.4.2-3.el7.noarch yum-metadata-parser-1.1.4-10.el7.x86_64 yum-rhn-plugin-2.0.1-4.el7.noarch PackageKit-yum-0.8.9-11.el7.x86_64 yum-3.4.3-118.el7.noarch 2、卸載這些軟件包； [root@pan ~]# rpm -e yum-3.4.3-118.el7.noarch --nodeps [root@pan ~]# rpm -e yum-utils-1.1.31-24.el7.noarch --nodeps [root@pan ~]# rpm -e yum-rhn-plugin-2.0.1-4.el7.noarch --nodeps [root@pan ~]# rpm -e yum-metadata-parser-1.1.4-10.el7.x86_64 --nodeps [root@pan ~]# rpm -e yum-langpacks-0.4.2-3.el7.noarch --nodeps [root@pan ~]# rpm -e PackageKit-yum-0.8.9-11.el7.x86_64 --nodeps 3、保證本機電腦能上網； [root@pan ~]# ping www.baidu.com PING www.a.shifen.com (163.177.151.110) 56(84) bytes of data. 64 bytes from 163.177.151.110: icmp_seq=1 ttl=49 time=13.1 ms 64 bytes from 163.177.151.110: icmp_seq=2 ttl=49 time=6.80 ms 64 bytes from 163.177.151.110: icmp_seq=3 ttl=49 time=6.77 ms ^C --- www.a.shifen.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2007ms rtt min/avg/max/mdev = 6.777/8.917/13.168/3.006 ms 4、進入以下網站上面查看軟件包的版本是否升級或者找到自己系統所對應的文件包版本更新； 網易163網絡源地址：http://mirrors.163.com/ CentOS網絡源地址：http://centos.ustc.edu.cn/centos/ 5、找到自己所需要的版本下載： wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-40.el7.noarch.rpm wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-updateonboot-1.1.31-40.el7.noarch.rpm wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm 6、查看下載完成結果； [root@pan ~]# ls anaconda-ks.cfg yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm initial-setup-ks.cfg yum-updateonboot-1.1.31-40.el7.noarch.rpm yum-3.4.3-150.el7.centos.noarch.rpm yum-utils-1.1.31-40.el7.noarch.rpm yum-metadata-parser-1.1.4-10.el7.x86_64.rpm 7、安裝軟件包： [root@pan ~]# rpm -ivh yum-* warning: yum-3.4.3-150.el7.centos.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY error: Failed dependencies: python-urlgrabber >= 3.10-8 is needed by yum-3.4.3-150.el7.centos.noarch 這里出現了一個小問題~~~：安裝的python-urlgrabber版本不符合您嘗試安裝的RPM的依賴關系，我目前沒有能力解決這個問題的辦法，
后來想了一個折中的辦法，翻牆去一個國外的yum源網站下載上面這五個較低版本的安裝包，在來安裝就不會有問題了 在這里附上鏈接各位可以翻牆出去下載對應版本的rpm包 鏈接：http://rpm.pbone.net/ 不報錯版本安裝包： yum-3.4.3-132.el7.centos.0.1.noarch.rpm yum-metadata-parser-1.1.4-10.el7.x86_64.rpm yum-plugin-fastestmirror-1.1.31-34.el7.noarch.rpm yum-updateonboot-1.1.31-34.el7.noarch.rpm yum-utils-1.1.31-34.el7.noarch.rpm
我把這五個rpm包下載到我的windows電腦里，然后用WinSCP這個軟件上傳到redhat 7 系統里，WinSCP這個軟件的使用方法就不在這里贅述了
8、下載好后重新安裝： [root@pan ~]# ls yum-3.4.3-132.el7.centos.0.1.noarch.rpm yum-updateonboot-1.1.31-34.el7.noarch.rpm yum-metadata-parser-1.1.4-10.el7.x86_64.rpm yum-utils-1.1.31-34.el7.noarch.rpm yum-plugin-fastestmirror-1.1.31-34.el7.noarch.rpm [root@pan ~]# rpm -ivh yum-* warning: yum-3.4.3-132.el7.centos.0.1.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:yum-metadata-parser-1.1.4-10.el7 ################################# [ 20%] 2:yum-plugin-fastestmirror-1.1.31-3################################# [ 40%] 3:yum-3.4.3-132.el7.centos.0.1 ################################# [ 60%] 4:yum-updateonboot-1.1.31-34.el7 ################################# [ 80%] 5:yum-utils-1.1.31-34.el7 ################################# [100%] [root@pan ~]# 這次沒有報錯了，安裝完成！！！ 9、新建repo 配置文件； [root@pan ~]# vim /etc/yum.repos.d/CentOS-Base.repo #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-$7 - Base - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=os baseurl=http://mirrors.163.com/centos/7/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$7 - Updates - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=updates baseurl=http://mirrors.163.com/centos/7/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$7 - Extras - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=extras baseurl=http://mirrors.163.com/centos/7/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$7 - Plus - 163.com baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7 10、清除緩存： [root@pan ~]# yum clean all Loaded plugins: fastestmirror, product-id, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Cleaning repos: base extras updates Cleaning up everything 11、測試安裝是否正常； [root@pan ~]# yum -y install lftp Loaded plugins: fastestmirror, product-id, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. base | 3.6 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/4): extras/x86_64/primary_db | 139 kB 00:00:00 (2/4): base/x86_64/group_gz | 155 kB 00:00:00 (3/4): updates/x86_64/primary_db | 3.9 MB 00:00:01 (4/4): base/x86_64/primary_db | 5.6 MB 00:00:02 Determining fastest mirrors Resolving Dependencies --> Running transaction check ---> Package lftp.x86_64 0:4.4.8-8.el7_3.2 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================= Package Arch Version Repository Size ======================================================================================================================= Installing: lftp x86_64 4.4.8-8.el7_3.2 updates 751 k Transaction Summary ======================================================================================================================= Install 1 Package ~~~~~此處省略安裝輸出內容~~~~ Installed: lftp.x86_64 0:4.4.8-8.el7_3.2 Complete! 到這里安裝完成，以后安裝所需包，可以不用本地yum源了，直接使用網絡yum源。