None, I use Docker for Linux, and Proton (Heroic) for Windows.
But if I had to pick a virtual machine: libvirt with virt-manager as a frontend, which uses KVM for virtualization.
this post was submitted on 10 Aug 2024
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From my other comment:
Then I created a Docker image with Linux, Gnome, and novnc so I can spin one up instantly with little resource overhead and control it from any web browser.
Maybe I should release my Dockerfile.
I might actually be interested. It's like a lightweight alternative to Proxmox?
Sort of, Proxmox does use noVNC I think, but it's a lot of overhead. This is just a docker command. I've finally put a page up for it: https://nowsci.com/webbian/
I didn't understand that you ran it without hardware virtualization. This is really convenient, thanks a lot for making it!
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But if I had to pick a virtual machine: libvirt with virt-manager as a frontend, which uses KVM for virtualization.
Its fair bcs vmware workstation does not support gpu passthrough libvirt with virt-manager is the only way
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Correct me I'd I'm wrong, but with docker you're limited to the filesyatems and the image of the OS you're installing. If you need to experiment with the pre-OS boot events, can that even be accomplished with docker? E.g., trying out different GRUB settings, setting up LUKS with dropbear etc. I think those things require a VM.
Yeah, you are correct. Docker shares the kernel with the host operating system, it doesn't use hardware virtualization. That's why it's so fast and simple, but it also means it's not a traditional VM and thus comes with some limitations.
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GNOME Boxes because it doesn't require 5 academic degrees to set up and I'm a GNOME user.
Same.
The lack of graphics acceleration is a bit painful though.
VirtualBox won't work on Fedora 40 AFAICT, and once installed it can't be uninstalled.
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Qemu/KVM and Virt Manager. I have three VMs that I pass my GPU to: a Hackintosh, a Windows 10, and and Windows 7.
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KVM
(VMware is proprietary software)
virtmanager as frontend for qemu/kvm. I tried the commandline but it's too annoying
KVM + Qemu + libvirt + virt-manager = ❤️
Usually VirtualBox. It's easy and free.
a rather odd choice given the alternatives
Besides VMWare it always seemed the easiest for me to quickly make a Windows VM or so. Everything else usually had more configuration steps. But that's been a while ago. There could very well have been easier tools available in the mean time. I never bothered to look.
I only ever used "permanent" virtualization once on my server. I think with Xen. But it didn't give me any benefits for my use case so I dropped it later on. Also probably at least ten years ago.
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I used KVM with virt-manager for a long time. Even ran a gaming VM with GPU pass-through.
Then I created a Docker image with Linux, Gnome, and novnc so I can spin one up instantly with little resource overhead and control it from any web browser.
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I use virt-manager, aka Virtual Machine Manager. Using this specifically because of the winapps for Linux repo has instructions on how to get Windows apps to run through the VM to be integrated in a Linux environment.
How "scriptable" is virt-manager?
My biggest issue with VirtualBox is that I have to install OSes as if I'm actually installing them. There aren't any images (at least that I'm aware of) that can run with a command, like deploying an EC2.
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I'm kinda lazy so when I need one, I just use Gnome Boxes and it's pretty easy to setup.
Virtmanger-kvm-qemu
Proxmox seem powerfull
It's a Type1, not Type2
https://en.wikipedia.org/wiki/Hypervisor#Classification
I use Proxmox for the machine that I use to download all of the Linux ISOs I want. You know, with a VPN, through BitTorrent. Linux ISOs.
Proxmox isn't really its own hypervisor. It combines a few common projects to make a OS. It is pretty much KVM with corosync for clustering.
With that being said it is a solid platform. Just keep in mind it is just standard Linux virtualization and for single nodes you can get the exact same setup easily on any Linux system.
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Gnome boxes.
Based on QEMU+KVM so it's quite robust. It works pretty well, plus it has various little features working out of the box that in some other software is a pain in the arse to configure.
Sticks out a bit on my system due to still being GTK3, but there is a GTK4 prototype out that usually works well.
E: downvoting anybody who says Gnome Boxes because you use a different virtual machine frontend is laughably pathetic lmao. Some people in the Linux community are such losers lol
Does it matter what front end it uses if the underlying environment is QEMU+KVM. Upvote for tha above.
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Virtmanager and qemu/kvm
Virt manager for qemu. I use docker and distrobox for Linux distros
I recently managed to use my windows partition (for dual boot) as a disk for a qemu. I don't use it but really cool trick anyways. Tutorial here
Also it's not very healthy for windows since it is not designed for constant hardware changes. But idc all my apps are installed on D: so I can just reinstall it without thinking about it much
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Virt-Manager, even works remotely via SSH.
Linux: qemu
OpenBSD: vmm, qemu when vmm isn't good enough
So far I’ve been fine with some Oracle Virtualbox and some using the VM Manager that was in my distro or maybe I downloaded it. It’s just called Virtual Machine Manager made by Red Hat. Libvirt.
Between those I’ve been able to do everything I have needed.
Virtualbox
Owned by Oracle. Stay away from Oracle.
It also taints the kernel with a useless module and doesn't really offer much in the way of features over plain old kvm qemu
Raw qemu at the command line for the one I use on a daily basis (not recommended for the average user). VirtualBox if I need to spin something up quickly but don't expect to need to keep it past the current testing cycle.
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