CentOS7.5卸载python2.7及yum后，重新安装环境

朴灿烈づ我的快乐病毒、 2022-12-22 09:45 324阅读 0赞

#### 1、删除已有的Python ####

rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps
    
    whereis python |xargs rm -frv
    
    whereis python

## 2、删除已有的yum ##

rpm -qa|grep yum|xargs rpm -ev --allmatches --nodeps
    
    whereis yum |xargs rm -frv

## 3、 创建目录用于存放Python和yum的rpm包 ##

mkdir /usr/local/src/python

## 4. 查看centOS的版本并下载相应的rpm包 ##

对应的rpm包下载网址：[http://mirrors.163.com/centos/7/os/x86\_64/Packages/][http_mirrors.163.com_centos_7_os_x86_64_Packages]

## 5、进入到python目录下 ##

cd /usr/local/src/python

下载相应的包到python目录

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/lvm2-python-libs-2.02.187-6.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/libxml2-static-2.9.1-6.el7.5.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-libs-2.7.5-89.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-ipaddress-1.0.16-2.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-backports-1.0-8.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-backports-ssl_match_hostname-3.5.0.1-1.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-2.7.5-89.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-10.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-setuptools-0.9.8-7.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-kitchen-1.1.1-5.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-chardet-2.2.1-3.el7.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/rpm-python-4.11.3-45.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-54.el7_8.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-aliases-1.1.31-54.el7_8.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-protectbase-1.1.31-54.el7_8.noarch.rpm
    wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm

## 6、下载完成后执行 ##

rpm -Uvh --replacepkgs lvm2-python-libs*.rpm --nodeps --force
    rpm -Uvh --replacepkgs libxml2-python*.rpm --nodeps --force
    rpm -Uvh --replacepkgs python*.rpm --nodeps --force
    rpm -Uvh --replacepkgs rpm-python*.rpm yum*.rpm --nodeps --force

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvbmd6aG91ZmVuZw_size_16_color_FFFFFF_t_70_pic_left]

## 7、如果将python换成python3的话，运行yum会报错 ##

[root@iz2ze3ogy01eqvjs99e8nez python]# yum
      File "/usr/bin/yum", line 30
        except KeyboardInterrupt, e:
                                ^
    SyntaxError: invalid syntax

将第一行 vi /etc/usr/yum 修改为

#!/usr/bin/python2

[http_mirrors.163.com_centos_7_os_x86_64_Packages]: http://mirrors.163.com/centos/7/os/x86_64/Packages/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvbmd6aG91ZmVuZw_size_16_color_FFFFFF_t_70_pic_left]: /images/20221120/09d9e21a07fb44b284952e467dbf997b.png