centos7下yum和python重装

因yum安装存在问题，yum repolist正常，python使用正常，网上找了很多方法，但是安装不成功，一直未找到原因，故重新安装yum和python。

1、查看系统版本： cat /etc/redhat-release2、删除python及yum相关组件：

#强制删除相关程序及关联 #xargs：允许对输出内容执行其他命令 #删除现有python rpm -qa |grep python|xargs rpm -ev --allmatches --nodeps whereis python |xagrs rm -rfv #删除现有yum源 rpm -qa |grep yum|xargs rpm -ev --allmatches --nodeps whereis yum |xagrs rm -rfv

3、http://mirrors.163.com/centos/7.3.1611/下载相关版本的程序及安装包 注意：下载的版本需和系统版本相对应

wget http://vault./7.3.1611/os/x86_64/Packages/lvm2-python-libs-2.02.166-1.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/libxml2-python-2.9.1-6.el7_2.3.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-libs-2.7.5-48.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-ipaddress-1.0.16-2.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-backports-1.0-8.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-backports-ssl_match_hostname-3.4.0.2-4.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-2.7.5-48.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-setuptools-0.9.8-4.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-kitchen-1.1.1-5.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/python-chardet-2.2.1-1.el7_1.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/rpm-python-4.11.3-21.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-utils-1.1.31-40.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-plugin-aliases-1.1.31-40.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-plugin-protectbase-1.1.31-40.el7.noarch.rpmwget http://vault./7.3.1611/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm

4、安装python rpm -Uvh --replacepkgs python*.rpm 注意：安装lvm2的时候报依赖关系：lvm2-libs = 7:2.02.166-1.el7 is needed by lvm2-python-libs-7:2.02.166-1.el7.x86_64，直接--nodeps --force强制安装即可 rpm -Uvh --replacepkgs lvm2-python-libs*.rpm --nodeps --force rpm -Uvh --replacepkgs libxml2-python*.rpm 5、安装yum rpm -Uvh --replacepkgs rpm-python*.rpm yum*.rpm 6、测试python是否可用7、测试yum是否可用测试完成，yum和python安装完成！ 来源：http://www./content-3-211851.html