安装python2.7需要与centos内核版本保持一致,否则会出现冲突
1、查看centos内核版本
[root@067mqtt2]# cat /etc/redhat-release cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)
2、卸载
卸载python:
#rpm -qa|grep python|xargs rpm -e --allmatches --nodeps
#whereis python|xargs rm -fr
卸载yum:
#rpm -qa|grep yum|xargs rpm -e --allmatches --nodeps
#rm -rf /etc/yum.repos.d/*
#whereis yum|xargs rm -fr
3.创建目录python和yum用以存放rpm包:
#mkdir /usr/local/src/python
#mkdir /usr/local/src/yum
4.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)
(1)下载python的rpm包:
#cd /usr/local/src/python 进入目录
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-2.7.5-48.el7.x86_64.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-devel-2.7.5-48.el7.x86_64.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-libs-2.7.5-48.el7.x86_64.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/rpm-python-4.11.3-21.el7.x86_64.rpm
(2)下载yum的rpm包:
#cd /usr/local/src/yum
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
#wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm
5.安装python以及yum的rpm包
(1)安装python:
#cd /usr/local/src/python
#rpm -ivh python-* rpm-python-*
出现安装包的依赖问题,此时如下解决即可:
rpm -ivh python-* rpm-python-* –nodeps –force
--nodeps --force为不考虑依赖包,强制安装。
安装完后即可运行python:
(2)安装yum:
#cd /usr/local/src/yum
#rpm -ivh yum-*
至此yum重新安装成功!