目前Proxmox中文社区源已正式提供镜像服务，镜像更新频率为每10小时，镜像站机房存放在法国巴黎online机房使用阿里云、华为云融合提供国内CDN加速服务。
地址
http://download.proxmox.wiki
#删除企业源
rm -rf /etc/apt/sources.list.d/pve-enterprise.list
##下载秘钥
wget http://download.proxmox.com/debian/proxmox-ve-release-5.x.gpg -O /etc/apt/trusted.gpg.d/proxmox-ve-release-5.x.gpg
#添加社区源
echo "deb http://download.proxmox.wiki/debian/pve stretch pve-no-subscription" >/etc/apt/sources.list.d/pve-install-repo.list
建议同时使用国内debian源
vim /etc/apt/sources.list
deb http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch main non-free contrib
deb http://mirrors.aliyun.com/debian-security stretch/updates main
deb-src http://mirrors.aliyun.com/debian-security stretch/updates main
deb http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
最后执行
apt update
#apt update&&apt dist-upgrade #如需升级pve，则执行该命令