redhat 6.0

1、卸载rhel的默认安装的yum包

查看yum包

rpm -qa|grep yum

卸载之

rpm -qa|grep yum|xargs rpm -e --nodeps


2、下载新的yum包

64位linux系统下载安装包

wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm

wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm

wget http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/yum-metadata-parser-1.1.2-4.el5.x86_64.rpm

32位linux系统下载安装包

wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm

wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm

wget http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-metadata-parser-1.1.2-4.el5.i386.rpm


注意：安装包可能会升级，最后的文件名可以通过最新路径下查看得到，例如：

http://centos.ustc.edu.cn/centos/5/os/x86_64/CentOS/

http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/


然后进行安装

rpm -ivh yum-*

注意：yum和yum-fastestmirror相互依赖，所以同时安装即可。

3、下载yum的配置源

wget http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo 下载到 /etc/yum.repos.d/ 目录下面


4、运行yum makecache生成缓存


redhat 6.5

1）首先，需要移除系统注册相关软件

° 查看相关软件：rpm -qa | grep subscription-manager

° 移除相关软件：yum remove subscription-manager

2）为了使用CentOS提供的yum源，需要删除系统自带的yum

° rpm -aq | grep yum | xargs rpm -e --nodeps

3）从Centos上下载安装yum

° wget http://vault.centos.org/6.0/os/x86_64/Packages/Python-iniparse-0.3.1-2.1.el6.noarch.rpm

° wget http://vault.centos.org/6.0/os/x86_64/Packages/yum-metadata-parser-1.1.2-14.1.el6.x86_64.rpm

° wget http://vault.centos.org/6.0/os/x86_64/Packages/yum-3.2.27-14.el6.centos.noarch.rpm

° wget http://vault.centos.org/6.0/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm

° rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm

° rpm -ivh yum-metadata-parser-1.1.2-14.1.el6.x86_64.rpm

° rpm -ivh yum-3.2.27-14.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm

° 注意： yum-3.2.27-14.el6.centos.noarch.rpm和yum-plugin-fastestmirror-1.1.26-11.el6.noarch.rpm相互依赖，需要同时安装

4） 使用Centos的yum源更新

° cd /etc/yum.repos.d/

° wget  http://mirrors.163.com/.help/CentOS6-Base-163.repo

° 编辑CentOS6-Base-163.repo，将$releasever字段全部替换为6

° yum makecache

° yum vim*   ===> 仅用作测试，观察yum是否可用