You don’t need a license key to use the Proxmox No-subscription repository. It is suitable for home labs users, testing purpose and non-production use.
To enable Proxmox No-subscription repository, edit /etc/apt/sources.list
file:
# nano /etc/apt/sources.list
And add the following lines:
deb http://ftp.debian.org/debian bullseye main contrib deb http://ftp.debian.org/debian bullseye-updates main contrib # security updates deb http://security.debian.org bullseye-security main contrib # PVE pve-no-subscription repository provided by proxmox.com, # NOT recommended for production use deb http://download.proxmox.com/debian/pve bullseye pve-no-subscription
Finally, update the repository list:
$ sudo apt update $ apt full-upgrade
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