新安装的red hat 系统，想使用yum安装一些服务时报错：

Loading "rhnplugin" plugin

Loading "installonlyn" plugin

This system is not registered with RHN.

RHN support will be disabled.

Setting up Install Process

Setting up repositories

No Repositories Available to Set Up

Reading repository metadata in from local files

Parsing package install arguments

Setting up repositories

No Repositories Available to Set Up

Reading repository metadata in from local files

No Match for argument: ssl

Nothing to do

（说什么这个系统没有注册）

如果你系统有wget这个工具，还有网络可以到互联网那就很好解决了。

[root@localhost pake]# cd /etc/yum.repos.d/

[root@localhost yum.repos.d]# ls

rhel-debuginfo.repo

[root@localhost yum.repos.d]# wget

http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo

把red hat的数据包备份起来，使用centos的。

[root@localhost yum.repos.d]# mv rhel-debuginfo.repo rhel-debuginfo.repo.bak

尝试安装成功：

root@localhost yum.repos.d]# yum install ssl

Loading "rhnplugin" plugin

Loading "installonlyn" plugin

This system is not registered with RHN.

RHN support will be disabled.

Setting up Install Process

Setting up repositories

update                    100% |=========================| 1.9 kB    00:00     

base                      100% |=========================| 1.1 kB    00:00     

addons                    100% |=========================| 1.9 kB    00:00     

extras                    100% |=========================| 2.1 kB    00:00     

Reading repository metadata in from local files

primary.xml.gz            100% |=========================| 386 kB    00:01  

本文出自 “龙爱雪琪” 博客，请务必保留此出处http://dragon123.blog.51cto.com/9152073/1559028

yum This system is not registered with RHN. RHN support will be disabled