Centos6.10 yum和python被卸载后重新安装

  最近安装python3.x版本将Centos6.10中自带的低版本python通过yum卸载后，导致yum功能无法正常使用，后来才知道yum的功能是通过python编写，需要依赖python的低版本，高版本的python与yum功能无法兼容，此时就需要安装Centos系统自带的python版本。无法使用的yum如下图所示：

1.环境重现

卸载yum

rpm -qa|grep yum|xargs rpm -e --allmatches --nodeps
rm -rf /etc/yum.repos.d/*
whereis yum|xargs rm -rf

卸载python

rpm -qa|grep python|xargs rpm -e --allmatches --nodeps
whereis python|xargs rm -rf

3.系统查看

查看系统版本
 cat /etc/centos-release
查看位数
 uname -a

4.安装python

在镜像站中找到系统版本和位数所对应的python rpm包，在这里采用的是阿里云的镜像（https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/），系统版本：centos 6.10 64位

创建python目录，存放rpm包

mkdir /usr/local/src/python

切换到python目录下

cd /usr/local/src/python

下载python相关rpm包

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-2.6.6-66.el6_8.x86_64.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-pycurl-7.19.0-9.el6.x86_64.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-devel-2.6.6-66.el6_8.x86_64.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-libs-2.6.6-66.el6_8.x86_64.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/rpm-python-4.8.0-59.el6.x86_64.rpm

rpm安装python

rpm -ivh python-* rpm-python-*

5.安装yum
与安装python一样需要找到对应系统版本的rpm包下载到本地，通过rpm安装]

创建yum目录，存放rpm包

mkdir /usr/local/src/yum

切换到yum目录

cd /usr/local/src/yum/

下载rpm包

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

wget https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm

rpm安装yum

rpm -ivh yum-*

6.测试安装结果

yum

python -V

 由于前面将yum.repos.d文件删除了，需要重新安装yum仓库源，不然yum找不到yum源导致功能无法正常使用，可参照我博文中：https://blog.csdn.net/cen50958/article/details/88964298 中10.设置yum源，将yum源设置为阿里云。