Some alternatives:
-
Incus - After canonicals takeover of LXD a fork of it called Incus was created. Supporting both virtual machines and linux containers. Free open-source with paid support.
https://github.com/lxc/incus -
virt-manager - For home usage without clusters and the like a simple Linux host with kvm/qemu/libvirt/virt-manager usually works just fine.
https://github.com/virt-manager/virt-manager -
Cockpit Project - Cockpit can be used to manage both virtual machines and podman. Personally I use it in tandem with virt-manager.
https://github.com/cockpit-project/cockpit https://github.com/cockpit-project/cockpit-machines https://github.com/cockpit-project/cockpit-podman https://github.com/oVirt/cockpit-ovirt -
Proxmox - KVM/LXC Hypervisor based on Debian. Supports clustering and High-Availability. Free open-source with paid support. https://github.com/proxmox
I used to think a lot about up-gradability before but often find that when a cpu is too slow then it is also so old that I have to change the motherboard and ram too for compatibility reasons.
Same thing with the motherboard, if it fails I’ve never had it be new enough that I can bring my cpu and ram with me to my next motherboard (unless buying an older motherboard second hand).
And many of my disks will be old enough that I want to replace them too, at least if they have anything important on them.
Only things I’ve brought with me when upgrading desktops have been my case (including fans), psu, gpu and (some) disks.
Having a quiet and dust proof case that is easy to build in and a good psu that https://cultists.network/140/psu-tier-list/ endorses has become higher priority to me since then, as I know they might last me more than one build.