VIRTUALBOX INTERFACE FOR QEMU HOW TO
VIRTUALBOX INTERFACE FOR QEMU MANUAL

I will do some examples using KCLI in this post since It is already shipped with my nested vagrant build.Īll these 3 are a set of GUI based management tools to manage VM Guests. See details in the official Github repository. It even interacts with other virtualization providers (KubeVirt, oVirt, OpenStack, VMware vSphere, GCP and AWS) and easily deploys and customize VMs from cloud images. This is a wonderful CLI tool that’s created by karmab and interacts with libvirt API to manage KVM environments from configuring to managing the guest VMs. Which is why I won’t talk about it today. > see CheatsheetĪlthough this tool is a reference in terms of VM creation, it has never succeeded to create qemu VMS on my VM. Virsh is a command-line interface that can be used to create, destroy, stop-start and edit virtual machines and configure the virtual environment (such as virtual networks etc). Start the VM (make sure you have 2Cores and 4GB RAM to spare before the launch).Sharing is good, but live labs are even better. Please note that it’s actually qemu-kvm that’s available using nested virtualization here, which is a type 2 hypervisor ( virtual hardware emulation).Ĭan’t afford a dedicated host for KVM? I’ve got you covered – you can start exploring KVM right now on your laptop with my vagrant build.

VIRTUALBOX INTERFACE FOR QEMU HOW TO

More on how to enable it in my previous blog. So how to make a Hypervisor (KVM) aware of the Host hardware when it’s itself installed under another Hypervisor layer (VirtualBox)? Well, this is now possible thanks to the nested virtualization feature available in the latest version of VirtualBox and it is very simple to enable even after your VM has been provisioned. I instantly thought of the benefit for customers that were struggling with Oracle licensing under Vmware farms.Īnyway, today Oracle Cloud Infrastructure (OCI) and Engineered Systems are relying hugely on KVM and the old OVM is slowly being replaced by OLVM manager which orchestrates VM administration on top of KVM hosts. KVM (Kernel-based Virtual Machine) started to interest me as soon as I learned that Oracle allowed for hard partitioning on KVM boxes if installed on top of Oracle Linux.

It seems perfectly fine to me for doing just a simple NAT (and in fact it seems to be the trivial if not only way that avoids the iptables modifications).It has been a while since I wanted to blog about nested virtualization, but the good news is I now have a vagrant build to share with you so you can vagrant it up:).

Is QEMU/KVM's usermode networking inferior in any way to VirtualBox's NAT mode networking? According to the libvirt FAQ, usermode networking 'has nonobvious limitations, so its usage is discouraged', but I could not find what those limitations are (other than being restricted to NAT). Is this the result of a user-space implementation of various networking protocols similar to QEMU/KVM's usermode networking (just with more options) or are there privileged operations executed behind the scenes, allowed by the user's membership in the vboxusers group? VirtualBox's networking solution seemingly requires less privileges. A few specific questions that come to my mind: I would like to understand the underlying reasons behind these differences and their implications. Probably related to the above, in non-root user sessions, QEMU/KVM only allows usermode (or manual) networking, while VirtualBox supports most/all of the various networking modes even without root privileges. VirtualBox, on the other hand, can operate both in NAT and bridged modes without touching iptables or creating any network interfaces.

VIRTUALBOX INTERFACE FOR QEMU MANUAL

I noticed the following differences in the networking experience between QEMU/KVM (used through libvirt) and VirtualBox:įor anything else than usermode or manual networking, QEMU/KVM needs a virbr0 network interface to be created and it adds a bunch of rules to iptables.

Virtualbox interface for qemu