1.删除redhat原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps

2.下载yum安装文件

wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-[3.2.27-14.el6].centos.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-Metadata-parser-1.1.2-14.1.el6.x86_64].rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.26-11.el6].noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6].noarch.rpm

3.进行安装yum

rpm -ivh --nodepspython-iniparse-[0.3.1-2.1.el6].noarch.rpm
rpm -ivh --nodepsyum-Metadata-parser---nodepsyum-3.2.27-14.el6].centos.noarch.rpm

--nodepsyum-plugin-fastestmirror-].noarch.rpm

#注：【】表示变化内容，具体版本根据镜像源内容进行替换

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/CentOS-Base.repo

内容为：

[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6

#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
#packages used/produced in the build but not released
#[addons]
#name=CentOS-$releasever - Addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirrors.163.com/centos/6/extras/$basearch/#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/
enabled=0

5.

yum clean all

yum install vim#测试一下可不可以用

---------------------------------------------------------

安装EPEL源

1.https://fedoraproject.org/wiki/EPEL/zh-cn

图片20160626111259.png" alt="wKioL1dvSHGROP98AAKWm-JHX8c327.png-wh_50" src="http://s1.51cto.com/wyfs02/M00/83/48/wKioL1dvSHGROP98AAKWm-JHX8c327.png-wh_500x0-wm_3-wmp_4-s_679089546.png">

进去之后下载epel-release-6-8.noarch

2.安装epel

rpm -ivh epel-release-6-8.noarch.rpm

3.执行 yum clean all 清理yum缓存

4. 执行 yum repolist

上面可以看到EPEL源已经成功添加到源列表中去了，并且显示已经提供了上万个软件包！

如果出现这样的错误：

Error: Cannot retrieve Metalink for repository: epel. Please verify its path and try again

编辑：vi /etc/yum.repos.d/epel.repo 将baseurl启用，mirrorlist注释

如下：

baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch

#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch

再执行 yum repolist

……OK!……