概述
由于版权的问题，RedHat6不能直接使用yum一些指令，需要配置yum源为网易镜像，但是网上谈到很多；整理一下，将有用的信息整理如下，以便于能够为其他的配置服务配置使用；需要卸载掉原理系统自带的yum指令，下载安装新的yum；
操作步骤：
1.删除redhat原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps
2.下载yum安装文件
注意，如果下载时找不到文件，就登录到：http://mirrors.163.com/centos/6/os/x86_64/ 上查找相应的文件。然后再下载,部分rpm包版本可能有所不同，如果报404可到http://mirrors.163.com/centos/6/os/x86_64/Packages/搜索包名即可。
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm
如果网易地址下载失败，可以通过这链接下载
3.进行安装yum
rpm -ivh python-iniparse-0.3.-2.1.el6.noarch.rpm rpm -ivh yum-metadata-parser-1.1.-.el6.x86_64.rpm rpm -ivh --force python-urlgrabber-3.9.-.el6.noarch.rpm rpm -ivh yum-3.2.-.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.-.el6.noarch.rpm
注意最后两个包必需同时安装，否则会相互依赖
4.更新repo文件
mv /etc/yum.repos.d/rhel-source.repo /etc/yum.repos.d/rhel-source.repo.bak
vi /etc/yum.repos.d/rhel-debuginfo.repo
[base] name=CentOS-$releasever - Base baseurl=http://mirrors.163.com/centos/6/os/$basearch/ gpgcheck= gpgkey=http://mirrors.163.com/centos/6/os/x86_64/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-$releasever - Updates baseurl=http://mirrors.163.com/centos/6/updates/$basearch/ gpgcheck= gpgkey=http://mirrors.163.com/centos/6/os/x86_64/RPM-GPG-KEY-CentOS-6 #packages used/produced in the build but not released #[addons] #name=CentOS-$releasever - Addons #baseurl=http://mirrors.163.com/centos/6/addons/$basearch/ #gpgcheck= #gpgkey=http://mirrors.163.com/centos/6/os/x86_64/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras baseurl=http://mirrors.163.com/centos/6/extras/$basearch/ gpgcheck= gpgkey=http://mirrors.163.com/centos/6/os/x86_64/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus baseurl=http://mirrors.163.com/centos/6./centosplus/$basearch/ gpgcheck= enabled=
5、yum clean all
6、yum install vim #测试一下可不可以用，以下为部署成功后的运行界面；
7、安装gcc
yum -y install gcc
参考网站
http://blog.csdn.net/liuhuoxingkong/article/details/75949704（很好的网址）
https://www.jianshu.com/p/446e3fe7d710（不错哇，但是内容不全，可以查看上一个网址一起看）