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    2022-07-10 15:58:45问题解决:Failed to download metadata for repo ‘appstream‘: Cannot prepare internal mirrorlist:...

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    Centos8于2021年年底停止了服务,大家再在使用yum源安装时候,出现下面错误“错误:Failed to download metadata for repo ‘AppStream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist”


    解决命令:

    // 1. 进入yum的repos目录
    cd /etc/yum.repos.d/

    //2. 修改所有的CentOS文件内容
    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-*

    // 3. 更新yum源为阿里镜像
    wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

    yum clean all

    yum makecache

    // 4. yum安装
    yum -y install screen


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