RHEL 6.0使用CentOS yum源

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引言：由于RHEL的yum在线更新是收费的，如果没有注册的话是不能使用的，即不能在线安装软件。在这种情况下，想使用RHEL系统，还想用yum源来在线安装软件，有没有办法？答案是有办法，请往下看！

1、删除RHEL原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps #删除

2、下载新的yum安装包 #这里我们使用CentOS的yum源

wget http://mirror.centos.org/centos/6.0/os/i386/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-metadata-parser-1.1.2-14.1.el6.i686.rpm
wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-3.2.27-14.el6.centos.noarch.rpm
wget http://mirror.centos.org/centos/6.0/os/i386/Packages/yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm

3、安装yum软件包

rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-14.1.el6.i686.rpm
rpm -ivh yum-3.2.27-14.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm

注意：最后两个安装包要放在一起同时安装，否则会提示相互依赖，安装失败。

4、更改yum源 #我们使用网易的CentOS镜像源
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
vi CentOS6-Base-163.repo #编辑文件
把文件里面的$releasever全部替换为版本号，即6 最后保存！

或者直接把下面的内存拷贝到CentOS6-Base-163.repo文件中即可（已经修改好）

1 # CentOS-Base.repo
2 #
3 # The mirror system uses the connecting IP address of the client and the
4 # update status of each mirror to pick mirrors that are updated to and
5 # geographically close to the client. You should use this for CentOS updates
6 # unless you are manually picking other mirrors.
7 #
8 # If the mirrorlist= does not work for you, as a fall back you can try the
9 # remarked out baseurl= line instead.
10 #
11 #
12
13 [base]
14 name=CentOS-6 - Base - 163.com
15 baseurl=http://mirrors.163.com/centos/6/os/$basearch/
16 #mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
17 gpgcheck=1
18 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
19
20 #released updates
21 [updates]
22 name=CentOS-6 - Updates - 163.com
23 baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
24 #mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
25 gpgcheck=1
26 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
27
28 #additional packages that may be useful
29 [extras]
30 name=CentOS-6 - Extras - 163.com
31 baseurl=http://mirrors.163.com/centos/6/extras/$basearch/
32 #mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras
33 gpgcheck=1
34 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
35
36 #additional packages that extend functionality of existing packages
37 [centosplus]
38 name=CentOS-6 - Plus - 163.com
39 baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/
40 #mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus
41 gpgcheck=1
42 enabled=0
43 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
44
45 #contrib - packages by Centos Users
46 [contrib]
47 name=CentOS-6 - Contrib - 163.com
48 baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/
49 #mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contrib
50 gpgcheck=1
51 enabled=0
52 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6