A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.

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Why I can not update Linux core in dockers?

When I run apt-get update && apt-get upgrade in container, the core is not starting to update. Yes, I know, containers use the kernel of host machine and can not execute some ...
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3answers
57 views

Process scheduling data on linux

I am doing a project on OS and require the process scheduling data for an operating system. The data has to include the list of all processes in short-term-scheduler and long-term-scheduler along with ...
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14 views

Setting up bridged adapter for Arch guest, Windows host [on hold]

I've tried many things that I've found online but I'm stumped. I'm using VirtualBox, my guest OS is Arch, kernel version 4.4.1-2, my host is Windows 10. When I set it to have NAT adapter, I get it ...
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1answer
12 views

How to add public key to QCOW2 image via virt-sysprep

I am trying to add my public key to the root account on a qcow2 disk image (CentOS 7 Cloud Image). The documentation from virt-sysprep says that it supports adding keys, but I cannot seem to ...
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26 views

Virtual CPU utilization(multi core CPU)- Identify the process

I am in a road block and trying to understand the below. Red hat Linux has been installed in a Intel Xeon CPU. We have a 6 core virtual CPU's. I am trying to find out which job is consuming more of ...
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1answer
26 views

as small as possible linux for virtual machine with firefox 37 and up [closed]

I have unused machine with Intel T5500 (2cores), 2GB RAM. Now need to pick as small as possible linux distro for running as virtual machine. I just need to save as much CPU as possible and be able to ...
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1answer
45 views

Sharing a harddisk partition with a linux VM on virtualbox [closed]

Let me just paint the picture so you can all understand. My host OS is Windows 10. I have virtualbox installed on my windows OS, and in virtualbox I have an kali distro running. This distro and its ...
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9 views

Remotely use a platform device

I have a linux/android device with a certain hardware module (lets call this pc A), and a driver which uses the hardware as a platform device. Because of testing/os restrictions I'd like to be able ...
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1answer
26 views

What is the different between qcow2 format vs img format?

I want to back up a virtual machine image when I went to the directory where the images are stored /var/lib/libvirt/images/ I found one .img file, the rest were .qcow2, unlucky the virtual machine I ...
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2answers
38 views

Linux beginner. What OS should I use? [closed]

I recently started JAVA programming and I would like to start learning Linux programming simultaneously. I run a mac and I am planning to use Oracle VM VirtualBox to boot linux. What kind of Linux OS ...
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2answers
41 views

Running 64-bit Virtual Linux on any AMD/Intel Chip without VT-X support

Am I correct in assuming that a 32-bit virtual machine will run on any AMD/Intel chips, but if I want to run 64-bit. The host machine has to be VT-X enabled for AMD and Intel?
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41 views

Unable to log in to any user accounts on a fresh install of Arch linux

Has anyone run into the issue of not being able to log into their root account after a fresh install of Arch Linux? I have tried setting the root password twice with the passwd command within the ...
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0answers
12 views

How to extend a windows volume on xen xm virtual server

I have inherited a Xen virtual server running debian 2.6.32. I have two windows hosts and one of them needs more disk space. I am thinking I should be able to rob a few GB from one of the windows ...
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1answer
51 views

Ubuntu 15.10 Network Interfaces Name

I have just installed (fresh-installation) over VMware Workstation 10 an Ubuntu 15.10 64-bit virtual machine. Here, network interfaces names have been changed from 'ethX' to 'enXXXX'. My target is ...
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0answers
35 views

Rolling Release Kali Linux repositories

My question is whether anyone using Kali Linux installed in a Virtual Box or VMware, using Windows 10 as host operating system, has fully upgraded using the Rolling Release repositories and still had ...
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1answer
23 views

How to access KVM windows guest bios

How to access KVM windows guest bios: As I want to check guest bios virtuliazation options to enable nested virtuliazation, like vm inside vm.
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0answers
12 views

Create Network Interface That Redirects All Traffic to Actual Interface

I would like to create a network interface on my Arch Linux host for a VM to use (probably QEMU) so I can use iptables to firewall all network traffic in/out of the VM. The interface should send all ...
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1answer
23 views

Gnome Boxes: proper network configuration?

I've got a problem with Gnome Boxes: I've 2 machines, cloned 1 from other, with CentOS. Both machines get same IP addr on Gnome Boxes, so when I boot 2nd, 1st gets disconnected from network, and ...
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0answers
38 views

Why does NetworkManager explicitly support tun/tap devices?

Apparently NetworkManager recently gained support for macvlan interfaces. I notice it also supports macvtap, and the patch shows it already had some support for tun/tap devices. I thought tap ...
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1answer
83 views

List of VBox Machines Help?

So, I'm writing up a bash script to list out the VM's on my host, so I can make sure they are fired up when the host machine restarts... no problem here... my issue is getting the list of the ...
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1answer
17 views

Personal VM Station setup

In a previous question, i was looking for a way to execute VMware without installing a window manager or desktop environment. It proved difficult and I was curious if I am over complicating a solution ...
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1answer
17 views

What are all the places http_proxy can be set?

I am trying to install a Centos 7 VM imported from another LAN environment. I have reconfigured the network in /etc/sysconfig/network-scripts/ifcfg-eth0. So now I can ssh to the machine and ping ...
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0answers
65 views

Easiest *non-networking* method of communication between Linux host and Windows guest [closed]

I'm writing application software for Ubuntu which needs to communicate with another application running in a Windows Virtual Machine via Qemu on the same machine. I have full control over the source ...
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1answer
38 views

Power 7/8 - LPAR has null desired_proc and desired_mem

I am querying the HMC via commands to get the memory and cpu of the logical partitions. I am using the command lssyscfg. For many lpars which are in Running or Not Activated status, the command ...
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0answers
23 views

Virtualization and SCSI passthrough

Is there a way to do SCSI passthrough in a virtualized environnement under Linux (Linux being the host OS, and MacOSX being the guest OS) ? My goal is to drive a high end scanner for which no driver ...
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2answers
31 views

adding a virtual NIC to linux

I'm using CentOS 6.5 on oracle VirtualBox. In order to gain access to the internet, I've added a second network card connected to the physical network card of my pc. I rebooted the virtual server ...
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1answer
35 views

Light distro for VM-Ware guest running under Windows [closed]

I am forced to work under Windows but I need to access to a Linux environment for multi-platform programming tests. I need a fully functional desktop environment, ready to use, git, emacs and classic ...
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83 views

CentOS update from 7.1 to 7.2 with 2.6 OpenVZ kernel?

We are using CentOS 7.1: $ cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) We deferred the 7.2 upgrade. It looks like it did not cause any problems so we are planning an upgrade. The ...
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0answers
17 views

Mouse not appearing for linux in virtual box on mac

I have just set up Kali linux on Virtualbox on my mac but when I try to enable the mouse on the virtual machine the cursor doesn't show and I'm not sure why i do see a message that states "You ...
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1answer
30 views

Access folder created in windows

Is it possible to access the folder created in windows, through unix operating system (Ubuntu 14.04 LTS) that is installed on a virtual machine on windows? If yes, what is the process to access the ...
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1answer
234 views

Qemu USB passthrough (windows guest)

I have a USB ADC/DAC and a HASP protected proprietary data acquisition system for it, both of which do not work in linux. I am trying to make it work in Windows virtual machine using qemu. Here are ...
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2answers
62 views

NTP works but clock is not the same

I'm trying to sync multiple machines (9 machines that are cloned from one machine so they have exactly same config) on a LAN using NTP. All machines are running FreeBSD 10.2 on VirtualBox with Ubuntu ...
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0answers
65 views

Why don't I have networking connectivity on my virtual machine?

I have a virtual machine called vnet208. I used to be able to ssh into it, but I made some changes a while ago and then we had some power outages and now I don't have network connectivity. I can get ...
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9 views

Connecting a Redhat virtual machine to the host NIC that uses network bonds

I'm running Redhat 6.6 on severs with multiple interfaces. And I am successfully using network bonds on the interfaces to connect with the different VLANs on the existing network. The servers are ...
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1answer
13 views

Virtualizing OSX partition on MacBook running Linux

I have a Macbook Pro with a partitioned drive that hosts Arch linux and OSX. Linux is my main development environment but occasionally a need arises to test some code on OSX. This doesn't happen ...
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/dev/kvm is missing from system supporting kvm-virtualization

I'm trying to enable kvm-virtualization for Android virtual devices. In order to do so, I followed this guide and did the following: Checked, if kvm-virtualization is available: user $ grep --color ...
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76 views

Running QEMU inside XEN virtual machine

Is it possible to run QEMU inside XEN virtual machine? I tried to enable the XEN nested virtualization for with following options to virtual machine configuration file in /etc/xen/vm1.cfg: hap=1 ...
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1answer
58 views

Forward code.domain.com to specific server?

I have the classic Multiple Servers 1 IP trouble Except I am using ESXi (s1) to host to Server VMs (VM1, VM2). What I'm trying to accomplish is this: When Someone Goes to mydomain.com they get S1-VM1 ...
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0answers
24 views

Booting EFI on KVM

I'm on Ubuntu 14.04 running kernel 3.19. I'm trying to use virt-manager to start a virtual machine. I have installed ovmf for EFI firmware and booted the machine with a Gentoo ISO in the CD slot. I ...
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1answer
30 views

How to check connectivity between opensuse vm client and server and how to remotely log in

I am new to openSUSE, I created an openSUSE VM acting as the server(Server_VM) where I enabled secure shell server and created a user account client_01 that is going to be used to access Server_VM ...
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1answer
49 views

How to run a gui client os in a virtual machine on non gui linux host?

Is it possible to run a windows gui client in a virtual machine hosted in a non gui linux? How to set this up? and how to connect to such a machine?
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Docker(-like virtualization) for non-ephemeral VMs/isolation? [closed]

Until now I used KVM/Xen for virtualization. I heared about docker beeing a light-weight alternative to it. But the official best practices of docker state that docker-container should be ephemeral. ...
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37 views

VirtualBox linked clones - does updating parent automatically update children?

I have tried linked clones, immutable, multiattach everything but I am not sure if I am doing something wrong. I have the following scenario - (parent) - base install, updates as of Monday (child ...
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2answers
111 views

Can't mount shared folder on Linux VM

Host machine: OS X El Capitan Virtual machine: Linux Red Hat(64-bit) through Virtual Box Goal: share folder on Mac, so when I change files on host machine, they will be changed on the virtual ...
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0answers
27 views

Manual IP configuration on RHEL 7 KVM guest installation

I have KVM set up on a RHEL 7 server with the installation media for guests being served via FTP. Whenever I kick off a new VM installation via Virtual Machine Manager (I'm doing graphical ...
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0answers
39 views

create an image that can be mounted in vmware from existing xubuntu 14.04 install using free software

I have spent 2 days researching/testing this and come up empty. I have 2 physical computers: 1) main pc is windows 7 with VMware. 2) other PC with xubuntu 14.04 (want to back this one up). I wish ...
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0answers
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testing open vswitch

I've been fooling around with open vswitch and trying to understand it. I have a simple setup that is not working as I expect it to. I feel like I'm probably missing something simple, but I don't know ...
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1answer
24 views

How can you write to a file system before booting using VirtualBox?

I'm reading the TurnKey Linux 14 documentation and it states that in order to preseed values for an appliance, you have to write them to the file system before the machine boots for the first time. ...
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1answer
45 views

Encrypt partition and allow qemu to use it as the guest drive

I am trying to encrypt a 25gb partition on my SSD with cryptsetup in such a way that will allow QEMU-KVM to use it as the guests drive. I have tried luksformatting the drive: cryptsetup luksFormat ...
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0answers
21 views

How do I copy a Genymobile Android virtual machine from one computer to another?

I have a Genymotion Android virtual machine on one computer, and I've tried copying the entire .Genymobile directory to another computer, and Genymotion on the second computer does not seem to be able ...