VirtualBox is ridiculously simple to set up and get virtual machines going. Shared folders, shared clipboard and much more are no issue.
But.
It eats resources. The installed virtual machines (VM) run relatively slow. What have you found to be feature comparable - and most importantly more resource-efficient - alternatives for running VMs under Linux?
Under Linux, the recommended route is KVM/Qemu, with Virt-Manager as the GUI front-end for them. You will need to follow tutorials to install it correctly, as it requires special steps, e.g. adding them to specific usergroups. But once it works, it works well.
definitely not as easy as virtualbox
Gnome Boxes is about as easy as virtual box, and wont break your kernel.
Not for the faint of heart, but I’ll keep it in mind.
Definitely if you’re on Linux, use Qemu (and the best is to install a GUI to use it after)
I’ve looked at it. It comes up a lot. Thank you.
Did you use virt-manager with it?
I use Quickemu for mine, makes it really quick and easy to get a new system up and running.
Really wish we could get in the habit of recommending GUIs first, not last.
Really wish we wouldn’t have to separate the two. This adds a complication layer for exiting Windows users.
Ideally: install app (insert name). Run and enjoy.
Without any kind of software behind GUI this is almost useless and I think that CLI (or even TUI) are today so underrated that we should give more and more power to them instead of GUI
Virt-manager with qemu-system, although if you use the kvm driver for both performance should be about the same I think.
Don’t forget virtualbox has a lot of configuration options that may improve performance, Ive never had a problem with it but also never need high performance from a VM.
virt-manager is my go-to. There’s also Gnome Boxes, but I’ve never used it myself. virt-manager is the best I’ve tried, personally. Both use KVM, so they should be much more resource efficient
https://virt-manager.org/ is a no brainer. Built upon libvirt/Qemu/KVM it’s way more powerful and pretty much just as easy to use. There is zero reasons to use anything else.
How easy is it to convert a VirtualBox machine+hdd to Virt Manager?
Pretty damn easy.
qemu-img convert -f vdi -O qcow2 Windows10.vdi Windows10.qcow2Here’s a more complete guide: https://cubiclenate.com/2024/05/30/converting-vdi-to-qcow2-step-by-step-guide-for-virt-manager-migration/
You can specify the virtualization engine in VirtualBox, including KVM.
A couple of easy virtualization tools that allow you to create VMs in a few clicks are Gnome Boxes and QuickEmu, which leverages Qemu and KVM
Good tip. Thanks.
Vagrant by Hashicorp.
Edit: if the news of IBM acquiring them goes through, I will cry. And we live in the worst timeline, so it’ll happen.
While it wasn’t a requirement, be aware that Vagrant (along with all Hashicorp products) are no longer free software and are instead under the Business Software Licence.
ibm is going to buy the entire ansible-verse; so be ready.
i will weep with you in solidarity. 😉
works decently enough for me is https://virt-manager.org/ to deal with libvirt. its not quite as nice in some ways but way less resource intensive.
I agree. The only feature where I’d say it’s weaker feature-wise is it doesn’t have any form of virtual GPU acceleration - either you deal with software rendering or have to pass through a graphics card (I’ve done it, but it’s not easy.).
Otherwise, I’d say it tends to run better than VirtualBox, though it’s been years since I last used Vbox anyhow. A plus is Virt Manager comes in most distro repos, whereas VirtualBox doesn’t. Also, it allows you to directly edit the XML, so you can do some cool stuff that would be really annoying (not impossible) to do in VirtualBox.
That’s my struggle with this solution as well.
Still, a solid choice.
actually, you can do vulkan passthrough if the guest machine is also linux
You can also run VirtualBox with KVM as a backend.
This has been mentioned a few times here. Didn’t know that. Thank you.
Especially on Linux, libvirt/qemu on kvm is a no-brainer. It works, it’s fast, the setup is practically effortless
Surprised no one is saying Xen
This “Beginners Guide” they have there is a serious turnoff. They might want to consider a more lightweight and friendly intro to their software. 😄
Still, if I find the time to go through this massive wall of text, I will.
As jet points out, QEMU for actual hardware virtualisation.
There is one relevant thing, which is not exactly in the same category, but does somewhat similar thing:
containers
most popular example being Docker
https://en.wikipedia.org/wiki/Containerization_(computing)
containers don’t emulate whole hardware stack like virtual machines do, they just run the guest OS on top of host OS.
so because they don’t put resources towards emulating hardware, they are much more resource efficient.
so if your problem is “I’m running Fedora but I want to run something that for some reason runs just on Ubuntu”, then you could use containers for that.
containers are mostly used in headless environments (as in servers, no GUI), so running and displaying desktop Linux inside them is a bit tricky, but it can be done.they emulate just the OS
Containers don’t emulate anything. They have an OS installed within them. Typically you use Alpine Linux which super minimalistic and lightweight.
yes, valid point, thank you for the correction
Might be that you really don’t need VMs but just lightweight namespace containers. If so, you can use docker/podman, systemd-nspawn or various other tools. The overhead will be less than 1% if you stay within the same architecture as your host.
