wget http://download.proxmox.com/debian/proxmox-ve-release-6.x.gpg

mv proxmox-ve-release-6.x.gpg /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg

chmod +r /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg

echo "deb http://download.proxmox.com/debian/pve buster pve-no-subscription" | tee /etc/apt/sources.list.d/pve-install-repo.list

apt update && apt dist-upgrade -y

echo "deb http://download.proxmox.com/debian/ceph-nautilus buster main" | tee /etc/apt/sources.list.d/ceph.list

apt install proxmox-ve  open-iscsi ifupdown2 postfix -y