centos7设置国内repo地址mirror

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解决

1.查看系统ID
cat /etc/os-release

2.修改repo
sed -e "s|^mirrorlist=|#mirrorlist=|g" \
    -e "s|^#baseurl=http://mirror.centos.org/centos/\$releasever|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/7.9.2009|g" \
    -e "s|^#baseurl=http://mirror.centos.org/\$contentdir/\$releasever|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/7.9.2009|g" \
    -i.bak \
    /etc/yum.repos.d/CentOS-*.repo