RedHat not registered yum Solution

Solution 1. uninstall the yum component rpm-qa | grep yum | xargs rpm-e -- nodeps 2. install centos yum package 32-bit # wget http://centos.ustc.edu.cn/centos/5/ OS /i386/CentOS/yum-metadata-parser-1.1.2-4.el5.centos.i386.rpm # wget http://centos.ustc.edu.cn/centos/5/ OS /i386/CentOS/yum-fastestmirror-1.1.16-16.el5.centos.noarch.rpm # wget http://centos.ustc.edu.cn/centos/5/ OS /i386/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm 64-bit # wget http://centos.ustc.edu.cn/centos/5/ OS /x86_64/CentOS/yum-metadata-parser-1.1.2-4.el5.centos.x86_64.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-3.2.22-40.el5.centos.noarch.rpm 3. download the update source and place it in the system directory wget http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo mv CentOS-Base.repo/etc/yum. repos. d/CentOS-Base.repo 4. update yum resource library yum makecache