Centos7卸载并重新安装yum源

Linux Centos7卸载并重新安装yum源

在使用 yum install 命令时遇到如下问题：

Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager

This system is not registered with an entitlement server. You can use subscription-manager to register.

通过百度知悉，可以通过重新安装yum源来解决上述问题。

一、卸载现有的yum源

// 查看现有的yum源
[[email protected] ~]# rpm -qa yum | grep yum
yum-3.4.3-168.el7.centos.noarch
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-utils-1.1.31-54.el7_8.noarch
yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch
// 卸载：rpm –e 
// 强制：--nodeps
 [[email protected] ~]# rpm –qa | grep yum | xargs rpm –e --nodeps

二、下载yum源相关的rpm包

[[email protected] ~]# wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm
[[email protected] ~]# wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-54.el7_8.noarch.rpm
[[email protected] ~]# wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm
[[email protected] ~]# wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
// 查看下载好的rpm包
[[email protected] ~]# ls
yum-3.4.3-168.el7.centos.noarch.rpm          yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm
yum-metadata-parser-1.1.4-10.el7.x86_64.rpm  yum-utils-1.1.31-54.el7_8.noarch.rpm

三、重新安装yum源

// 强制安装，安装完成后即可正常使用
[[email protected] ~]# rpm -ivh yum-* --nodeps
Preparing...                          ################################# [100%]
Updating / installing...
   1:yum-metadata-parser-1.1.4-10.el7 ################################# [ 25%]
   2:yum-plugin-fastestmirror-1.1.31-5################################# [ 50%]
   3:yum-3.4.3-168.el7.centos         ################################# [ 75%]
   4:yum-utils-1.1.31-54.el7_8        ################################# [100%]
// 查看重新安装后的yum源
[[email protected] ~]# rpm -qa yum
yum-3.4.3-168.el7.centos.noarch