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CentOS解决Error: Failed to download metadata for repo ‘appstream‘: Cannot prepare internal mirrorlist

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修改源文件

进入yum.repos.d 目录下
cd /etc/yum.repos.d/
修改源文件
sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

centos