root@pve:~# cat /etc/apt/sources.list
deb
https://mirrors.ustc.edu.cn/debian bookworm main contrib non-free non-free-firmware
deb
https://mirrors.ustc.edu.cn/debian-security/ bookworm-security main contrib non-free non-free-firmware
deb
https://mirrors.ustc.edu.cn/debian bookworm-updates main contrib non-free non-free-firmware
deb
https://mirrors.ustc.edu.cn/debian bookworm-backports main contrib non-free non-free-firmware
deb
https://mirrors.ustc.edu.cn/proxmox/debian/pve bookworm pve-no-subscription
root@pve:~# cat /etc/apt/sources.list.d/ceph.list
deb
http://download.proxmox.com/debian/ceph-quincy bookworm main