redhat6.5 配置使用centos的yum源

er2121e

新安装了redhat6.5.安装后，登录系统，使用yum update 更新系统。提示：
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
无法更新。
redhat 默认自带的 yum 源需要注册，才能更新。我们想不花钱也可以更新，需要替换掉redhat的yum源。

1.检查是否安装yum包
查看RHEL是否安装了yum，若是安装了，那么又有哪些yum包：
[iyunv@localhost ~]# rpm -qa |grep yum
yum-metadata-parser-1.0-8.fc6
yum-3.0.1-5.el5
yum-rhn-plugin-0.4.3-1.el5
yum-updatesd-3.0.1-5.el5
2 删除redhat自带的yum包
卸载上面显示的所有yum包：
[iyunv@localhost ~]# rpm -qa|grep yum|xargs rpm -e --nodeps（不检查依赖，直接删除rpm包）
再用
[iyunv@localhost ~]# rpm -qa |grep yum
[iyunv@localhost ~]#
查看，无信息显示表示已经卸载完成。
3.下载新的yum包。使用Centos6.5的yum包

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# wget http://mirrors.163.com/centos/6. ... 1.2-16.el6.i686.rpm # wget http://mirrors.163.com/centos/6. ... 6.centos.noarch.rpm # wget http://mirrors.163.com/centos/6. ... 0-14.el6.noarch.rpm

安装yum软件包

注意:单个的安装包可能会依赖其它包（例如yum和yum-fastestmirror会相互依赖），所以我们可以把所有这些包放在一起，用一行命令将它们同时安装即可：

1	# rpm -ivh yum-metadata-parser-1.1.2-16.el6.i686.rpm yum-3.2.29-40.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

4.更换yum源。使用163的源

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# cd /etc/yum.repos.d/ # wget  http://mirrors.163.com/.help/CentOS6-Base-163.repo # vi CentOS6-Base-163.repo

编辑文件，把文件里面的$releasever全部替换为版本号，即6.5 最后保存！或者直接把下面的内存拷贝到CentOS6-Base-163.repo文件中即可（已经修改好）

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# 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-6.5 - Base - 163.com baseurl=http://mirrors.163.com/centos/6.5/os/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=os gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-6.5 - Updates - 163.com baseurl=http://mirrors.163.com/centos/6.5/updates/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=updates gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-6.5 - Extras - 163.com baseurl=http://mirrors.163.com/centos/6.5/extras/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=extras gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-6.5 - Plus - 163.com baseurl=http://mirrors.163.com/centos/6.5/centosplus/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=centosplus gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #contrib - packages by Centos Users [contrib] name=CentOS-6.5 - Contrib - 163.com baseurl=http://mirrors.163.com/centos/6.5/contrib/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=contrib gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

5.清除原有缓存

1	# yum clean all

重建缓存，以提高搜索安装软件的速度

1	# yum makecache

6.更新系统

1	# yum update