Proxmox VE 5.4 fix updates / upgrades

Proxmox VE 5.4 has been released, this version is based on Debian 9. (Linux Kernel 4.15) It includes allot of new features, but sadly updates are still pointing to the enterprise repository for updates. This results in ugly error message when trying

apt-get update

such as:

[email protected]:~# apt-get update
Hit:1 http://security.debian.org stretch/updates InRelease
Ign:2 http://ftp.debian.org/debian stretch InRelease     
Hit:3 http://ftp.debian.org/debian stretch-updates InRelease
Hit:4 http://ftp.debian.org/debian stretch Release 
Ign:5 https://enterprise.proxmox.com/debian/pve stretch InRelease
Ign:6 https://enterprise.proxmox.com/debian/pve stretch Release
Ign:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Ign:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Ign:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Ign:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Ign:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Err:7 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise amd64 Packages
  401  Unauthorized
Ign:8 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise all Packages
Ign:10 https://enterprise.proxmox.com/debian/pve stretch/pve-enterprise Translation-en
Reading package lists... Done
W: The repository 'https://enterprise.proxmox.com/debian/pve stretch Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch https://enterprise.proxmox.com/debian/pve/dists/stretch/pve-enterprise/binary-amd64/Packages  401  Unauthorized
E: Some index files failed to download. They have been ignored, or old ones used instead.

To fix this, its similar to V3.X and V4.X. We need to add one repository:

nano /etc/apt/sources.list

add:

deb http://download.proxmox.com/debian stretch pve-no-subscription

Then disable or remove

rm -f /etc/apt/sources.list.d/pve-enterprise.list

(for disable add a # in front of the first line starting with deb)

Now you can run those updates take note only

apt-get update

and

apt-get dist-upgrade

are supported by Proxmox!