CentOS7 重装 yum

首先安装 wget

//下载rpm文件,上传服务器,然后使用 rpm 安装
http://mirrors.163.com/centos/7/os/x86_64/Packages/wget-1.14-18.el7_6.1.x86_64.rpm

rpm -ivh wget-1.14-18.el7_6.1.x86_64.rpm

　　

https://www.cnblogs.com/DiZhang/p/12544744.html

第一步: 卸载

rpm -aq|grep yum|xargs rpm -e --nodeps

第二部,到该地址 http://mirrors.163.com/centos/7/os/x86_64/Packages/ 查找以下包,并下载到同一个目录,例如如下

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-libs-2.7.5-89.el7.x86_64.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/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm &&
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-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

所有包下载完之后,有的可能版本会不一样,选择相近的版本即可

-rw-r--r-- 1 root root   98100 10月 15 02:59 python-2.7.5-89.el7.x86_64.rpm
-rw-r--r-- 1 root root   39800 7月   4 2014 python-iniparse-0.4-9.el7.noarch.rpm
-rw-r--r-- 1 root root 5919140 10月 15 02:59 python-libs-2.7.5-89.el7.x86_64.rpm
-rw-r--r-- 1 root root   82396 11月 21 2016 python-pycurl-7.19.0-19.el7.x86_64.rpm
-rw-r--r-- 1 root root  111048 4月   4 2020 python-urlgrabber-3.10-10.el7.noarch.rpm
-rw-r--r-- 1 root root 1298856 10月 15 03:21 yum-3.4.3-168.el7.centos.noarch.rpm
-rw-r--r-- 1 root root   28348 7月   4 2014 yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
-rw-r--r-- 1 root root   35216 5月  14 2020 yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm

 第三步: 安装下载的包和依赖, 需要用

rpm -ivh python-*
rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm 
rpm -ivh yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm yum-3.4.3-168.el7.centos.noarch.rpm

第四步:修改源

cd /etc/yum.repos.d/
wget http://mirrors.aliyun.com/repo/Centos-7.repo
mv Centos-7.repo CentOS-Base.repo 

第五步: 验证

yum -y install yum-utils