yum 失败（This system is not registered with RHN.）解决方法（14.11最新)

使用RedHat 系统在线安装时提示This system is not registered with RHN.如下：

[root@localhost ~]# yum install httpd

Loaded plugins: rhnplugin, security

This system is not registered with RHN.

RHN support will be disabled.

Setting up Install Process

No package httpd available.

Nothing to do

解决方案：

1.卸载redhat自带的yum组件

[root@localhost ~]# rpm -qa|grep yum|xargs rpm -e --nodeps

2.安装CentOS的yum包 (新地址)

[root@localhost ~]# wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-metadata-parser-1.1.2-4.el5.i386.rpm
[root@localhost ~]# wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm
[root@localhost ~]# wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm
[root@localhost ~]# rpm -ivh *.rpm

warning: yum-3.2.22-37.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%]

3. 下载更新源，并存放在系统目录中

[root@localhost ~]# wget http://www.linuxidc.com/files/2011/05/06/CentOS-Base.repo
[root@localhost ~]#mv CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo

4.生成缓存并进行安装

[root@localhost ~]# yum makecache

[root@localhost ~]# yum install xxx (你要装的软件名)

附言：对不起大家 我操作上述后还是失败了，linux我不太熟悉. 又补充了下列操作后成功

解决办法：

需要先添加EPEL(Extra Packages for Enterprise Linux) repository:

然后

yum install git

就能安装了。

然后就可以了。大家可以试试