更换PVE的source源(尤其是PVE升级需要用)：

# 删除企业源
rm -rf /etc/apt/sources.list.d/pve-enterprise.list

# 屏蔽企业源
mv /etc/apt/sources.list.d/pve-enterprise.list /etc/apt/sources.list.d/pve-enterprise.list.bak

# 更换中科大的源
echo "deb https://mirrors.ustc.edu.cn/proxmox/debian/pve bookworm pve-no-subscription" > /etc/apt/sources.list.d/pve-no-subscription.list

# 更换ceph源
echo "deb https://mirrors.ustc.edu.cn/proxmox/debian/ceph-quincy bookworm no-subscription" > /etc/apt/sources.list.d/ceph.list

sed -i.bak "s#http://download.proxmox.com/debian#https://mirrors.ustc.edu.cn/proxmox/debian#g" /usr/share/perl5/PVE/CLI/pveceph.pm

PVE升级(参考文档：https://pve.proxmox.com/wiki/Downloads#Update_a_running_Proxmox_Virtual_Environment_8.x_to_latest_8.4)：

sudo apt update
apt dist-upgrade

# 重启
reboot

# 重启之后查看版本
pveversion -v

PVE删除节点：

pvecm delnode truenas-pve