1、强制删除已安装python和yum及其关联
rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps whereis python |xargs rm -frv whereis python ##验证删除,返回无结果 删除YUM rpm -qa|grep yum|xargs rpm -e --allmatches --nodeps rm -rf /etc/yum.repos.d/* whereis yum|xargs rm -fr
2、使用wget分别下载python以及yum的rpm包(注意:一定要和系统的版本号对应)
wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-2.7.5-34.el7.x86_64.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-pycurl-7.19.0-17.el7.x86_64.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-devel-2.7.5-34.el7.x86_64.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-libs-2.7.5-34.el7.x86_64.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/python-urlgrabber-3.10-7.el7.noarch.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/rpm-python-4.11.3-17.el7.x86_64.rpm
wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/yum-3.4.3-132.el7.centos.0.1.noarch.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget http://vault.centos.org/7.2.1511/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-34.el7.noarch.rpm
3、安装python以及yum的rpm包
rpm -ivh python-* rpm-python-* --nodeps --force rpm -ivh yum-*
4、验证
python -V yum
至此yum重新安装成功!