We've published already beta version of our CentOS 7 -> VzLinux 8 upgrade utility which can be used inside VMs or on bare-metal servers. You can try it from GitHub: vzlinux/vzupgrade
We've released the RTM version of VzLinux 8 last week, fully supported to run on bare-metal, inside virtual machines, system containers and applications containers (available in Docker Hub).
Main links:
Website: VzLinux
ISO Download: Index of /vzlinux/8/iso
Docker Hub: Docker Hub
Repositories...
Actually that is the final goal. :) What we are currently building already is a tool to convert CentOS 7 -> VzLinux 8 and becoming available in Virtuozzo Hybrid Server and OpenVZ in July/August. Once it is more mature, we will probably show it during a live webinar. And hopefully Plesk will...
Actually the conversion utility for OpenVz is already available via:
yum install https://repo.virtuozzo.com/vzlinux/7/x86_64/os/Packages/v/vzdeploy8-1.0.13-1.vl7.x86_64.rpm
It will become available in our commercial product Virtuozzo Hybrid Server 7.5 Update1 in second half of April 2021...