# yum repolistLoaded plugins: product-id, refresh-packagekit, security, subscription-managerThis system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.repolist: 0解决方法：
1、卸载原有YUM及相关软件包。# rpm -qa | grep yum | xargs rpm -e --nodeps# rpm -qa |grep python-urlgrabber|xargs rpm -e --nodeps# rpm -qa |grep python-iniparse|xargs rpm -e --nodeps2、下载centos6的相关软件包。# wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-73.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-1.1.30-37.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
*注释:这些软件包的具体的版本，请到http://mirrors.163.com/centos/6/os/x86_64/Packages/ 目录下，选择下载上述软件包。网上很多文章没法直接使用就是因为软件包的版本问题。3、安装软件包。# rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm# rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm# rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm# rpm -ivh yum-plugin-fastestmirror-1.1.30-37.el6.noarch.rpm yum-3.2.29-73.el6.centos.noarch.rpm
*注释 yum-plugin-fastestmirror 和 yum-3.2.29 要一起安装，否则会报错。4、替换新的repo文件。# cd /etc/yum.repos.d/# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo# sed -i "s;\$releasever;6;g" CentOS6-Base-163.repo# mv rhel-source.repo rhel-source.repo.bak5、使用yum安装软件包测试。# yum install -y sl