由於 redhat的yum在線更新是收費的，如果沒有注冊的話不能使用，如果要使用，需將redhat的yum卸載后，重啟安裝，再配置其他源.
本文包括配置本地源及第三方源。第三方源包括：網易，epel，repoforge，rpmfusion。以下以網易鏡像為例進行着重講解。本案例用到的相關文件見頁面最底部。
剛安裝完RHEL6以后直接yum命令得到如下所示的找不到匹配項的結果：
[root@jxsjtt data]# yum search nginx
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
Warning: No matches found for: nginx
No Matches found
[root@jxsjtt data]#
操作步驟：
1.刪除redhat原有的yum及相關軟件包
rpm -aq|grep yum|xargs rpm -e --nodeps
rpm -qa |grep python-urlgrabber|xargs rpm -e --nodeps
2.下載yum安裝文件
注意，如果下載時找不到文件，就登錄到：http://mirrors.163.com/centos/6/os/x86_64/ 上查找相應的文件。然后再下載,部分rpm包版本可能有所不同，如果報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-3.2.29-69.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-1.1.30-30.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
我的做法是直接到http://mirrors.163.com/centos/6/os/x86_64/Packages/搜索相關的5個包。
3.進行安裝yum
rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm
rpm -ivh yum-3.2.29-60.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
注意最后兩個包必需同時安裝，否則會相互依賴，如果出現“python-urlgrabber >= 3.9.1-10 is needed by”則要安裝python-urlgrabber-3.9.1-11.el6.noarch.rpm
－－－－－－－－－－配置網易源
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
內容為：
[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
gpgcheck=1
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=1
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=1
#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=1
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=1
enabled=0
5、yum clean all
6、yum install vim（測試一下）如果出現
Errno 14] PYCURL ERROR 6 - 'Couldn't resolve host 'mirrors.163.com'錯誤則
修改一下 /etc/resolv.conf
添加一個nameserver 8.8.8.8完成