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 menufind Proxmox VE GNU/Linux and press e to edit boot entry.

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

Add at the end: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: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