linux centos yum报错 To address this issue please refer to the below wiki article 解决方法

报错原因：国外yum镜像源 国内下载不了 修改为国内阿里yum镜像源

解决方法：

cd /etc/yum.repos.d/
mkdir repo_bak
mv *.repo repo_bak/
wget http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache

详细参考：《centos7 配置国内yum源和epel源》https://blog.youkuaiyun.com/whatday/article/details/106107168