Redhat7 更换 centos7 yum源

概述错误描述 This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. 解决步骤 删除redhat原有的yum rpm -aq|grep yum|xargs rpm -e --nodeps 下载yum安装文件 #到这个网站去下载如下RPM 错误描述

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. 

解决步骤 删除redhat原有的yum

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

下载yum安装文件

#到这个网站去下载如下RPM包http://mirrors.163.com/centos/7/os/x86_64/Packages/

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-163.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-fastestmirror-1.1.31-52.el7.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
ll

进行安装yum

rpm -ivh --force --nodeps python-iniparse-0.4-9.el7.noarch.rpm; rpm -ivh --force --nodeps yum-Metadata-parser-1.1.4-10.el7.x86_64.rpmrpm -ivh --force --nodeps yum-3.4.3-163.el7.centos.noarch.rpm yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

注意:最后两个包必需同时安装，否则会相互依赖 设置源

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

清除原有缓存

yum clean all

重建缓存，以提高搜索安装软件的速度

yum makecache

如果有提示错误，运行下面的命令：[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"   

sed -i ‘s/$releasever/7/‘ CentOS-Base.repo

 备注：把文件里的$releasever替换为7 最后：重新生成缓存，数字不为0，就OK了

yum clean all; yum makecache

更新系统

yum update

总结

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