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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Set screen resolution on Boxes

I'm using Boxes to try out Arch Linux in a Virtual Machine. It works fine but the screen resolution is 1024x768 whereas my screen has a resolution of 1366x768. How can I make my virtual machine use ...
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28 views

Keyboard doesn't working in boot menu on VirtualBox

I've just trying use CentOS 6.5 LiveCD on VirtualBox but all my attempts fail. When the system starts I see "Automatic boot in 10 sec ..." - if I do nothing, the message disappears after 10 seconds ...
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2answers
71 views

Why I can't set on the Debian 64 bit on the Virtual Box

I have installed the Virtual Box, and I would like to make a Debian virtual machine but I can't do this because my Virtual Box don't allow me to choose Debian x64. My computer and the .iso file are ...
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30 views

Running centos on a virtual machine as a webserver

I have taken the VM image of our webserver (CentOS/jboss) and would like to run it locally on my mac as a virtual machine so I can use it as a webserver when I am offline - I am using VM Fusion. The ...
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1answer
31 views

How to write shell script on VMDK to derive configuration

I have several VMDK files and I would like to write a shell scripts to derive configuration (i.e. No. of CPUs, RAM, NIC, HDDs Size, No of HDDs, etc.). How can I do this, or where do I start?
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2answers
70 views

systemd-timesyncd.service inactive on Arch on VMWare

On Arch Linux running as a guest OS on VMWare Fusion, I noticed the system time of Arch falls behind when I sleep the host OS and never gets back in sync. It appears systemd-timesyncd is loaded but ...
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49 views

Udev rule not working on Debian

I can detect and mount my USB drive on my Debian VM machine. And the first post here - explained below - works on my Ubuntu machine. Should not it work on Debian too? It doesn't of course. Why is ...
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1answer
34 views

Establish connection between Qemu Raspbian machine and Host

Objective: I would like to install several virtual (emulated) Raspberry machines on the laptop, connect them to each other and to the laptop. Afterwards I would like to send tcp packets from virtual ...
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75 views

No volume groups found after restoring CentOS image to VirtualBox VM

I used Clonezilla to backup an HP Proliant server running CentOS 5.10. I restored the image to a VirtualBox VM but when I try to boot I get an error of "No volume groups found" "Volume Group ...
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1answer
183 views

virt-manager PCI passthrough gives error “No IOMMU Found” even w/ Intel IOMMU enabled

I am trying to set up PCI passthrough in virt-manager to grant my Debian Wheezy guest VM access to my laptop's Intel Centrino N wireless card. The Debian default kernel has Intel IOMMU enabled, and I ...
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38 views

QEMU fullscreen mode on external monitor

I recently purchased an external monitor which I succesfully connected to my Lenovo Thinkpad and the accompanying Lenovo Advanced Dock via a DVI-D cable and it works fine so far. Unfortunately, I'd ...
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2answers
76 views

Can't install right grub on ArchLinux

Trying to instal ArchLinux on a Virtual Machine but I'm getting this error: When I follow the final steps to install grub https://wiki.archlinux.org/index.php/GRUB#Install_to_disk grub-install ...
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55 views

Remote connection to RedHat virtual machine from other PCs in the network

I have installed a virtual machine RHEL 6.1 using Oracle Virtual Box on my Windows 7 Computer. I have set the network options to Bridged adapter mode, my host Computer (Win-7) is connected on my home ...
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1answer
86 views

Where has my RAM gone & how to interpret atop's memory output?

For a while, I encounter RAM-shortages on my Debian webserver (VPS/virtual machine). This would not be unusual, if they happend on a regular basis. But they do not. Here's a chart from Munin: ...
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1answer
435 views

RAM for Kali Linux 1.0.9 VMWare 32 bit (i486)

How much RAM is the Kali Linux 1.0.9 VMWare 32 bit (i486) pre-configured to use. I have been searching on Google and various sites and cannot find the answer. I have limited, slow internet and need to ...
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3answers
155 views

how to disable time sync in VM guest?

I have a desktop (centos 6) that has a VM guest (RedHat 5.5). I just try to set the date to past time in VM guest. And it works. However, after 50 minutes, the time is sync to current time. After I ...
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1answer
253 views

Accessing file from the Windows host in a VirtualBox virtual machine

I am running Ubuntu 14.04 as the guest operating system in a VirtualBox virtual machine. The host runs Windows 8 (24GB). I want to access a folder of the host inside the guest. Since the source is ...
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55 views

Activate iSight in Linux Mint Qiana on a Virtual Machine

I'm trying to get the built-in iSight cam of my MacBook Pro 5,1 (running OS X 10.5.8 ) to run under the just-downloaded Linux Mint Qiana edition, which I have installed in Virtual Box (v.4.1.18, for ...
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1answer
81 views

Run AVD and VirtualBox at the same time

I'm developing for Android so I have the Android SDK installed and in it the program that runs virtual machine. Also, from the same reason, I'm running a oracle virtual box to host myself a redmine ...
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2answers
56 views

how to access the running VMs?

A colleague of a friend of mine established a voluntary project for a gaming union. But the problem now is, that the person is unavailable and I don´t know how I should access the running VMs. I spent ...
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1answer
43 views

How do I create a VM from an existing FreeBSD 8.2 PreRelease server?

I need to create a VM (VirtualBox) out of an existing freebsd 8.2 pre-release i386 machine. I need to replicate the exact same environment and I can't rebuild from scratch because FreeBsd 8.2 ...
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1answer
30 views

Vlan not connected to one network virtual machine to another network virtual machine

I created two ubuntu vm and I installed dhcp server on both the vm's. I configured the interfaces file and geting the ip address for vm1:10.192.1.2 and vm2:10.192.2.3 I have 24ports Switch. Now I ...
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23 views

Need commands to fetch Guest VM OS version from Xen and KVM

I m looking for the commands that can be executed to fetch the OS Version of the VMs running on the below Hypervisors. Xen (Not the citrix Xen server, but the Xen Sever hosted on a ubuntu Machine) ...
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2answers
141 views

Linux: Recover files from .vdi file

Somehow my .vdi (Linux guest OS) file got corrupted. Now I have some files in it (Inside the vdi file) and I want to recover those files. How can I do that?
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21 views

Can we add ports to OVS AFTER the VM is created?

I wanted to write up a program where I can create VMs first using libvirt. Initially they would not be added to any network. Then I want them to be attached to an OVS bridge where I can specify the ...
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1answer
109 views

KVM reports strange CPU usage peaks (bash infinite recursion)

On a KVM machine running Fedora 20 I ran ulimit -s unlimited (this removes limit on stack size) and an experimental torturing testing script. All this script does is just infinite recursion: ...
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74 views

Fresh install of Fedora 20 on a VM, seamless mode seems to be broken

Previously when I installed Fedora, maybe 16 or so, in my VM and did seamless mode on my windows 7 box, I got the gnome 3 bar to show up at the top of my windows machine (so I could use it from ...
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26 views

Shared drive between two Linux virtual machines

Assume I have two virtual machines. How do I share a VMDK drive between them? What solution do you recommend? Outside OS with NFS share? Both of OSes see this drive as: /dev/sdb.
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127 views

Kioptrix Level 1: Determining IP information for eth0 failed

I'm trying to set up a Kioptrix VM in VMware Player, in order to analyze it from a separate VM using Kali Linux. The VM can be found on this page: http://www.kioptrix.com/blog/test-page/ When ...
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1answer
3k views

Oh no! Something went wrong! Installing kali linux

I am trying to install a virtual machine running Kali (Formerly backtrack) 1.0.7 in 64 bit. My host machine is a 64 bit MacBook pro running 10.7.5. I am using Oracle VirtualBox version 4.3.12. The ...
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93 views

Ubuntu no connection after reboot

I cannot connect to my system after a reboot. It's a virtual Ubuntu machine only accessible by SSH. There is a gmrl rescue system installed and I got access to the disk. The only thing I can find in ...
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1answer
32 views

CentOS as an xterminal

I have recently built a new VM on my CentOS 6.5 system. The VM has Ubuntu with ROS, the robotic operating system on it. I just wanted to experiment with ROS and I've been running some of the ...
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1answer
2k views

Can't resize a partition using resize2fs

I recently resized the hard drive of a VM from 150 GB to 500 GB in VMWare ESXi. After doing this, I used Gparted to effectively resize the partition of this image. Now all I have to do is to resize ...
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1answer
61 views

LVS is not accessible from the outside

I'm currently busy setting up a LVS - Linux Virtual Server: root@debian1:~# ipvsadm -L IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port ...
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1answer
433 views

Why does my firewall (iptables) interfere in my bridge (brctl)?

I set up a bridge br0 "attached" to two interfaces: eth0, my physical interface connected to the real LAN, vnet0, a KVM virtual interface (connected to a Windows VM). And I have this single ...
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19 views

Is it possible to install RHEV on el6 clustered computer

Is it possible to use Linux (el6) clustered computer can be used as a hypervisor for RHEV 3.3/Ovirt 3.3? Cause, we can not combine RAM/CPU from two or more hypervisores to be considered as a one ...
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40 views

Copy and Paste between two guests in RHEV and/or VMware ESXi, is possible?

I do have two different setup: setup is with RHEV 3.3 and setup with VMware ESXi Is it possible to copy and paste between the two assigned guests to user, one guest is of Windows 7 and another ...
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1answer
236 views

Nested virtualization: run RHEVH inside KVM

I have laptop with 16GB RAM, trying to install Red Hat Enterprise Virtualization Hypervizor 3.3 on Virtual Machine Manager (KVM) based Guest, but it gives error "Virtualization Hardware not found" ? ...
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2answers
8k views

Wireless connection not figuring in VMware Workstation 10(Kali-Linux)

I just installed kali-linux on my VMware workstation 10. I had to check for the wireless connection in the kali-linux. I tried to check for the wireless-network connection(WiFi);but,it was incorrectly ...
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0answers
81 views

Centos 6.5 laptop with multiple KVM on roaming networks

I have Laptop with CentOS 6.5 with 16GB RAM and many KVMs are created for testing purpose. Situation is I have to move from site to site, and due to that physically connected network eth0 to Host ...
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1answer
2k views

CentOS 6.5 + KVM (Virtual Machine Manager) create shortcut - Laucher for Guest Machine

How can I create a Launcher on my desktop for guests machines inside of KVM on desktop of CentOS 6.5?
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1answer
615 views

USB to Virtual Machine XenServer 6.2

I've been fighting with this for a while and still nothing. So here is the deal, I have a XenServer 6.2 machine with many VM. I'm trying to attach the USB Port to the Virtual Machine, to use it with ...
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0answers
245 views

Distributed video encoding with ffmpeg

I'm in a process of giving form to a very old dream of mine - to create an efficient and cheap video encoding platform. And following the great examples such as SETI@home, BitTorrent and BitCoin, ...
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0answers
50 views

How to load virtualbox video kernel module?

I have a virtual quantal (12.10) Ubuntu machine. Upon starting, it says in it its boot.log Loading VirtualBox video kernel module [fail] What is this component and ...
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29 views

Allow users administrative access to some of the KVM VM's

I am running a KVM virtualization server on CentOS 6. How can I allow certain users administrative access (reboot, reinstall, erase) to only some virtual machines, but not other? I am using buth ...
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48 views

VPS/Cloud configuration management automatization for small environments [closed]

What would be an appropriate tool/approach for configuration management of a relatively small number of VPS/VMs (1-5). Even though it's a small number I'm a big fan of "nuke 'n boot" in case of any ...
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1answer
173 views

What precautions should I take running Windows 7 on a VM on Linux?

I'm thinking of running Windows 7 on a virtual machine on VirtualBox on top of Linux, so that Windows is sort of a "self-contained sandbox" (especially in terms of data storage) for things that ...
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2answers
53 views

simplest way to get an ubuntu virtual machine w/ ssh server on my network

I have an OSX box and I'd like to just get a fresh install of Ubuntu to use remotely over SSH. That's all. But I'd like to get that on the same box without in anyway altering my existing OSX ...
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25 views

A Way Around: Host Accessing Guest in Internal Network?

folks. I have installed a Linux virtual machine in VirtualBox with 2 adapters: vnet0 is a host-only network and vnet1 is an internal network. I am able to get the IP address given by vnet0. ...
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1answer
98 views

Installing Virtual machine on a virtual Machine

I am implementing Oracle RAC using 11.2. For shared disc option and low cost, we are planning to use Virtual Machines. I have installed one virtual machine (PARENT) Specifications: Oracle Linux 5.8 ...