Virtual Machine Manager is one of the best hypervisors available for the Linux desktop. It takes virtualization on your Linux desktop to the next level.
If you run Windows make sure to install the virtio drivers
A bare metal OS is an OS running outside of a hypervisor. Virt-manager is a class 1 hypervisor that allows you to host guest operating systems. ( Run vms )
Technically no, both use kvm virtualization which is included in the Linux kernal, so both are "bare metal hypervisors" other wise know as class 1 hypervisors. Distinctions can be confusing 😂
TL;DR: use what is in the kernel, without strange out of tree kernel modules like for VirtualBox, and use KVM, i.e. on fedora virt-manager qemu qemu-kvm
Virtual manager is a application that connects to libvirtd in the back end. Think of it as a web browser or file manager for VMs.
Proxmox VE is an entire OS built for virtualization on dedicated servers. It also has support for clusters and live VM migrations between hosts. It is in essence a server OS designed to run in a data center (or homelab) of some kind. If is sort of equivalent to vSphere but they charge you per CPU socket for enterprise support and stability
Well this thread clearly established that I neither have technical knowledge and I don't pay attention to spelling...
Jokes aside this is a good explanation. I have seen admins using vSphere and it kind of makes sense. I'm just starting to scratch the surface of homelab, and now started out with a raspberry pie. My dream is a full fledged self sustaining homelab.
What kind of headaches are you having? I've been running two completely different machines in a cluster with a pi as a Qdevice to keep quorum and it's been incredibly stable for years.
It's really just Debian with more packages preinstalled, but yeah, the idea is that you have an OS that has the primary purpose of virtualizing other machines.