step1
【重要】将/etc/apt/sources.list.d/pve-enterprise.list 文件内的唯一一条记录注释掉：
echo "#deb https://enterprise.proxmox.com/debian/pve bullseye pve-enterprise" > /etc/apt/sources.list.d/pve-enterprise.list
科大源
wget https://mirrors.ustc.edu.cn/proxmox/debian/proxmox-release-bullseye.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bullseye.gpg
echo "deb https://mirrors.ustc.edu.cn/proxmox/debian/pve bullseye pve-no-subscription" > /etc/apt/sources.list.d/pve-no-subscription.list #中科大源
echo "deb https://mirrors.ustc.edu.cn/proxmox/debian/ceph-pacific bullseye main" > /etc/apt/sources.list.d/ceph.list #中科大源
sed -i.bak "s#http://download.proxmox.com/debian#https://mirrors.ustc.edu.cn/proxmox/debian#g" /usr/share/perl5/PVE/CLI/pveceph.pm #中科大源
sed -i.bak "s#ftp.debian.org/debian#mirrors.aliyun.com/debian#g" /etc/apt/sources.list #阿里Debian源
sed -i "s#security.debian.org#mirrors.aliyun.com/debian-security#g" /etc/apt/sources.list #阿里Debian源
apt update && apt dist-upgrade
加速CT Templates
如果你需要加速 Proxmox 网页端下载 CT Templates，可以替换 CT Templates 的源为 https://mirrors.tuna.tsinghua.edu.cn。
具体方法：将 /usr/share/perl5/PVE/APLInfo.pm 文件中默认的源地址 http://download.proxmox.com 替换为 https://mirrors.tuna.tsinghua.edu.cn/proxmox 即可。
可以使用如下命令修改：
cp /usr/share/perl5/PVE/APLInfo.pm /usr/share/perl5/PVE/APLInfo.pm_back
sed -i 's|http://download.proxmox.com|https://mirrors.tuna.tsinghua.edu.cn/proxmox|g' /usr/share/perl5/PVE/APLInfo.pm
针对 /usr/share/perl5/PVE/APLInfo.pm 文件的修改，重启后生效。