Ubuntu LXC upgrade from Ubuntu 16.04 to 18.04 for proxmox ve 7.0 compatibility Proxmox 7.0 relies upon cgroups v2 and certain older os's are not supported (Centos7,ubuntu 16.04/16.10) for more info see here [https://dereferer.me/?https%3A//pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0%23Old_Container_and_CGroupv2] Caveat, as is
Ubuntu Ubuntu 16.04 - 18.04 + Owncloud 10.0.3 - 10.0.10 upgrade The Ubuntu upgrade was straight forward as expected. Don't Forget to backup! apt update && apt upgrade -y && apt dist-upgrade -y do-release-upgrade Answer some questions and a reboot later you have a fully updated Ubuntu 18.04.1 install. Now time to focus on Owncloud.