proxmox ve 6 换国内源

国内镜像找到两个，把apt源里的http://download.proxmox.com/换成下面之一即可

1. https://mirrors.ustc.edu.cn/proxmox/
2. http://download.proxmox.wiki/

nano /etc/apt/sources.list

# pve6 <--> debian buster

#deb http://ftp.debian.org/debian buster main contrib
#deb http://ftp.debian.org/debian buster-updates main contrib
# security updates
#deb http://security.debian.org buster/updates main contrib

# https needs(apt install apt-transport-https -y)
deb https://mirrors.aliyun.com/debian buster main contrib non-free
deb https://mirrors.aliyun.com/debian buster-updates main contrib non-free
deb https://mirrors.aliyun.com/debian-security buster/updates main contrib non-free

# pve6 repository: pve-no-subscription
#deb http://download.proxmox.com/debian/pve buster pve-no-subscription
#deb https://mirrors.ustc.edu.cn/proxmox/debian/pve buster pve-no-subscription
deb http://download.proxmox.wiki/debian/pve buster pve-no-subscription