Proxmox Virtual Environment (PVE)

Enabling no-subscription repositories

Prepare

Launch shell from hypervisor

This should provide root shell (priviledged access), if not elevate

sudo su

Ensure Internet connectivity from hypervisor itself (it can resolve and ping the source)

ping download.proxmox.com


apt update
apt install tmux

tmux

On Debian v13 (trixie)

mv /etc/apt/sources.list.d/pve-enterprise.sources  /root
mv /etc/apt/sources.list.d/ceph.sources            /root

Which version of Debian is running?

hostnamectl | grep -i debian

Create new file

nano /etc/apt/sources.list.d/pve-no-subscription.list

repos

# for Debian GNU/Linux 13 (trixie)
deb http://download.proxmox.com/debian/pve trixie pve-no-subscription

close editor, confirm changes (save)

CTRL+X, y

Adjust Debian repos

nano /etc/apt/sources.list.d/debian.sources

verify repos

#
# for Debian GNU/Linux 13 (trixie)
#

Types: deb
URIs: http://deb.debian.org/debian/
Suites: trixie trixie-updates
Components: main contrib non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

Types: deb
URIs: http://security.debian.org/debian-security/
Suites: trixie-security
Components: main contrib non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

Close editor, save

CTRL+X, y

Verify that repositories declared properly

apt policy

another one:

Do APT update

apt update

List packages ready for update, most important that there are new packages from PVE repo.

apt list --upgradable

another one:

Perform upgrade (when needed)

apt upgrade

the another one

Proxmox VE root pass reset (break the glass)

If you forgot the password, it is possible to change passowrd from the machine's console (physical access required):

Reset root password inside rescue shell:

Boot the server.

In GRUB find Proxmox VE GNU/Linux and press e to edit boot entry.

Config file will open, Find the line starting with linux (to load Linux kernel)

Add at the end of the that same line (not to the end of the file):

init=/bin/bash

Boot with

CTRL+X

Remount filesystem in read-write mode:

mount -o remount,rw /

Check the disk (optionally) to verify the disk is re-mounted:

df -hT

Change root's password:

passwd

Reboot

reboot -f

Login with new pass, usually to port 8006

https://nn.nn.nn.nn:8006/

and press [Login]

Change password (top-right, under username and 'Password')

Create admins user group

Create another admin user, add to admin user group created above

Define user's password

Add group permissions

Define permissions