centos 5.8 资源路径：
http://vault.centos.org/5.8/os/x86_64/CentOS/
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/gmp-4.1.4-10.el5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/readline-5.1-3.el5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/python-2.4.3-46.el5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/libxml2-2.6.26-2.1.12.el5_7.2.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/libxml2-python-2.6.26-2.1.12.el5_7.2.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/expat-1.95.8-8.3.el5_5.3.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/python-elementtree-1.2.6-5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/sqlite-3.3.6-5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/python-sqlite-1.1.7-1.2.1.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/elfutils-libelf-0.137-3.el5.x86_64.rpm
rpm --nodeps -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/elfutils-0.137-3.el5.x86_64.rpm
rpm --nodeps -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/rpm-4.4.2.3-27.el5.x86_64.rpm
rpm --nodeps -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/rpm-python-4.4.2.3-27.el5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/m2crypto-0.16-8.el5.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/python-urlgrabber-3.1.0-6.el5.noarch.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.x86_64.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/python-iniparse-0.2.3-4.el5.noarch.rpm
rpm --nodeps -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm
rpm -Uvh http://vault.centos.org/5.8/os/x86_64/CentOS/yum-3.2.22-39.el5.centos.noarch.rpm
yum -y update
总站镜像路径：https://www.centos.org/download/mirrors/