2021 CentOS YUM Couldn't resolve host 'mirrors.cloud.aliyuncs.com' 解决方案

错误

Couldn't resolve host 'mirrors.cloud.aliyuncs.com'

原因

非阿里云服务器使用阿里云镜像源需要特殊调整

解决方案

阿里开源镜像站：https://developer.aliyun.com/mirror/

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

sed -i  's/http/https/g' /etc/yum.repos.d/CentOS-Base.repo

#替换版本，$releasever替换6.8, 6.8是我用的版本
sed -i  's/$releasever/6.8/g' /etc/yum.repos.d/CentOS-Base.repo

sed -i  's/centos/centos-vault/g' /etc/yum.repos.d/CentOS-Base.repo