centos修改yum为国内源

步骤

1.备份原始源文件: mv /etc/yum.repos.d/CentOS-Linux-BaseOS.repo /etc/yum.repos.d/CentOS-Linux-BaseOS.repo.backup
2.获取阿里源: wget -O /etc/yum.repos.d/CentOS-Linux-BaseOS.repo http://mirrors.aliyun.com/repo/Centos-8.repo

问题

1.error: 为 repo 'appstream' 下载元数据失败 : Cannot prepare internal mirrorlist: No URLs in mirrorlist

• sudo sed -i -e "s|mirrorlist=|#mirrorlist=|g" /etc/yum.repos.d/CentOS-*
• sudo sed -i -e "s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g" /etc/yum.repos.d/CentOS-*
• reference

参考

1.https://www.4spaces.org/centos-modify-yum-repos/