centos7.6.1810 重装python与yum

可能你会在工作中、学习等过程中遇到服务器因为某些原因,从而导致需要安装或者重新安装pyton和yum的情况.但是网上各路鬼神说法各异甚至根本就无法执行等问题.Ok,不要着急,清晰的解决方案来了.好吧,我们进入正题.

第一步:卸载和清理

rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps

whereis python |xargs rm -frv

rpm -qa|grep yum|xargs rpm -ev --allmatches --nodeps

whereis yum |xargs rm -frv

  ok,到这里为止呢已经清理完成.接下来就是下载安装包(注意:务必根据自己服务器的版本来下载依赖和包)!
第二步:下载安装包
查看server版本(我这里是 Centos 7.6.1810 )

cat /etc/redhat-release

首先,进入http://mirrors.ustc.edu.cn/centos/查找相对应的版本
我自己的server版本对应的路径为.这里我要提一下.很多童鞋们会在这里踩坑.centos7.0到centos7.8之前版本所有软件包,现在镜像站都将通用centos7版路径下的包.

官方是这样描述的:

This directory (and version of CentOS) is deprecated.  For normal users,
you should use /7/ and not /7.0.1406~7.7.1908/ in your path. Please see this FAQ
concerning the CentOS release scheme:

https://wiki.centos.org/FAQ/General

If you know what you are doing, and absolutely want to remain at the 7.0.1406~7.7.1908
level, go to http://vault.centos.org/ for packages. 

Please keep in mind that 7.0.1406~7.7.1908 no longer gets any updates, nor
any security fix's.

,所以centos7路径地址:http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/

为了清晰和方便安装,先创建一个软件的安装目录
mkdir /opt/install

然后wget以下软件包(如果你网络不是很好,或者担心会断掉.可以加上断点续传):

wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/libxml2-python-2.9.1-6.el7.4.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-backports-1.0-8.el7.x86_64.rpm  
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-chardet-2.2.1-3.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-devel-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-ipaddress-1.0.16-2.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-kitchen-1.1.1-5.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-libs-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-setuptools-0.9.8-7.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-10.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/python-virtualenv-15.1.0-2.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-build-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-build-libs-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-libs-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-python-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/rpm-sign-4.11.3-43.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-3.4.3-167.el7.centos.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-plugin-aliases-1.1.31-53.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-53.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-plugin-protectbase-1.1.31-53.el7.noarch.rpm
wget http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/yum-utils-1.1.31-53.el7.noarch.rpm

第三步:安装

接下来,就是安装上面下载的软件

rpm -ivh --force --nodeps libxml2-python-2.9.1-6.el7.4.x86_64.rpm
rpm -ivh --force --nodeps python-2.7.5-88.el7.x86_64.rpm
rpm -ivh --force --nodeps python-backports-1.0-8.el7.x86_64.rpm  
rpm -ivh --force --nodeps python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch.rpm
rpm -ivh --force --nodeps python-chardet-2.2.1-3.el7.noarch.rpm
rpm -ivh --force --nodeps python-devel-2.7.5-88.el7.x86_64.rpm
rpm -ivh --force --nodeps python-iniparse-0.4-9.el7.noarch.rpm
rpm -ivh --force --nodeps python-ipaddress-1.0.16-2.el7.noarch.rpm
rpm -ivh --force --nodeps python-kitchen-1.1.1-5.el7.noarch.rpm
rpm -ivh --force --nodeps python-libs-2.7.5-88.el7.x86_64.rpm
rpm -ivh --force --nodeps python-pycurl-7.19.0-19.el7.x86_64.rpm
rpm -ivh --force --nodeps python-setuptools-0.9.8-7.el7.noarch.rpm
rpm -ivh --force --nodeps python-urlgrabber-3.10-10.el7.noarch.rpm
rpm -ivh --force --nodeps python-virtualenv-15.1.0-2.el7.noarch.rpm
rpm -ivh --force --nodeps rpm-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps rpm-build-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps rpm-build-libs-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps rpm-libs-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps rpm-python-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps rpm-sign-4.11.3-43.el7.x86_64.rpm
rpm -ivh --force --nodeps yum-3.4.3-167.el7.centos.noarch.rpm
rpm -ivh --force --nodeps yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
rpm -ivh --force --nodeps yum-plugin-aliases-1.1.31-53.el7.noarch.rpm
rpm -ivh --force --nodeps yum-plugin-fastestmirror-1.1.31-53.el7.noarch.rpm
rpm -ivh --force --nodeps yum-plugin-protectbase-1.1.31-53.el7.noarch.rpm
rpm -ivh --force --nodeps yum-utils-1.1.31-53.el7.noarch.rpm

  Ok,到这里基本上就已经卸载和重装完成了.

第四步:更新
最后,我们来更新以下源数据.

yum clean all

yum makecache

yum --skip-broken update

是的,没错!现在你就可以输入

python -v

和

yum

查看相应版本信息了.到此,圆满完成!如果你喜欢的话,请持续关注vahoa.ma的ITeye.