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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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 ...
7
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1answer
164 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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92 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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29 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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180 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
6k views
+50

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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0answers
128 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
43 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
4k 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
95 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
1k 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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22 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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54 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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2answers
389 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
13k 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
107 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
1k 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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369 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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62 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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0answers
35 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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56 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
301 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
56 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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31 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
129 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 ...
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1answer
2k views

Failed to load VMMR0.r0 (VERR_SUPLIB_OWNER_NOT_ROOT)

when I try to start a vm in Virtualbox, I get the error in the title message. I have already checked /usr/lib/virtualbox/VMMR0.r0 and the permissions are -rw-r--r-- 1 root root 785K Sep 21 2013 ...
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1answer
955 views

How do I setup an IP address on my virtualbox VM?

I have a VM which I run on VirtualBox like so ... $ VBoxManage startvm --type headless dev-006 ... and I can see that NIC1 is "Bridged" and setup like so ... $ VBoxManage showvminfo ...
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2answers
2k views

virtmanager- Unable to locate libvirtd daemon

I tried starting Virt-manager but get this error Unable to connect to libvirt. internal error: Unable to locate libvirtd daemon in /usr/sbin (to override, set $LIBVIRTD_PATH to the name of the ...
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0answers
167 views

How do I install Arch using an older kernel? No ISOs seem to exist

This is my first time in Arch, and I'm following this tutorial: http://www.youtube.com/watch?v=KSGWiFOp_7o&list=PLj97-HQdMXyZSvMD1xRTqPEeh4nSA6dpC which is great, except that I can't go any ...
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2answers
63 views

LiveCD “Remembers” Earlier Partitioning

Whenever I use VirtualBox to install a Linux distro, I usually install the LiveISO onto the hard drive instead of just using it as a live CD. However, sometimes the ISO doesn't install fully (usually ...
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486 views

kvm/qemu linux guest vm wont boot

host linux (kvm/qemu/libvirt) guest linux (slackware) the slack vm pauses just after Loading Linux-virtio...... message. it's stuck in paused state. i think i shutdown the host without shutting the vm ...
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2answers
406 views

Which strategy suits best a user with a scientific background like me? (Linux Desktop, Dual Boot, Virtualization)/ (Fedora? Arch? Win?) [closed]

First of all, I've a scientific background and my professional work involves scientific computation: Lots of Python, Matlab, C/C++, TeX, Git, Java apps and some Julia, Parallel computing, web ...
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1answer
151 views

Using a minimal linux host for OSX and W7 VMs

I am a 3d artist (animation/modeling/sculpting) and I have a dream. I have licenses of zBrush the Autodesk and Adobe suites. My zBrush is a mac only licence; maya is both (I think), Adobe is for ...
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1answer
193 views

How to determine if and which linux security module (LSM) is available?

Is there a way to find out if and in case which linux security LSM (apparmor, selinux, grsecurity) is used by the kernel? To be more specific let's assume I am a legimate root user of the machine? ...
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1answer
98 views

Testing a Linux router on Laptop with one NIC [closed]

So, I have these instructions on converting my Linux machine to a router using (enable IP forwarding, NAT). Now my laptop has only one NIC and I want to test this setup. Any ideas how I can do this? ...
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88 views

Scripting vmware-player with Windows in Linux

I have a Windows XP virtual machine, that I run with vmware-player on Linux. In the virtual machine, I have a .bat script that reads some input from a given place (insite the machine's virtual disk), ...
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1answer
473 views

Where are my emails stored on CentOS 5.6

I have a CentOS 5.6 VM installation and currently have a handful of emails that I would like to get access to. When I run mail as root, I get: [root@dev mail]# mail Mail version 8.1 6/6/93. Type ? ...
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0answers
207 views

Pentesting from a virtual machine, hiding the host

I want to install Kali Linux as a virtual machine in VirtualBox for pentesting wireless routers and network hosts. I want to hide my host OS, which is Windows 8, so that other machines see my computer ...
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0answers
119 views

sharing folders in virtual box

I'm trying to run a Linux Mint guest inside a Linux Mint host(both 64-bit). I've installed Guest Additions etc. But I'm not able to access the shared folder. sudo mount -t vboxsf kernel ...
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1answer
128 views

VirtualBox Package to DL for Linux Mint

I am trying to decide which edition of VirtualBox to download. I am currently running Linux Mint 16 Petra MATE and am wanting to install Windows 8.1 to a VM to use Visual Studio for some of my course ...
3
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1answer
262 views

Creating a private network for internal VMs

I am trying to configure a private network for use with my Xen VMs, in addition to the public network in use by another of the VMs (VM1, which has its own public IP). So far, I have the public side ...
0
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1answer
192 views

Install a basic CentOS VM on Fedora 19 with libvirt

I would like to install a CentOS 6.5 virtual machine on my machine, only with command line tools and basic networking capabilities, i.e a way to have http and ssh connections between the host (Fedora ...
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0answers
2k views

Connecting to a serial port with VMWare ESXi and Ubuntu

Using VMWare ESXi 5.0.0, having a guest OS Ubuntu 12.04.3, upgraded to the date 05 january 2014. I've added "Serial port 1" to the Ubuntu 12.04 guest OS (let's call it "MyUbuntuPC"). Serial port 1 is ...
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3answers
2k views

Having issues installing Kali Linux in Virtualbox

Trying to install Kali Linux in VB and it freezes. I believe I have the correct version and a good ISO because it comes up and allows me to navigate to "install" Once I press enter, all that happens ...
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0answers
167 views

Xubuntu 13.10 on Dropbox

I have a Mac OS X 10.5.8, and I would like to use Linux on a virtual machine. I use Dropbox, and the most modern version I can run on my PC is Version 4.1.8. I created a virtual machine running ...
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1answer
150 views

Run a GUI OS via a hypervisor from a Linux server terminal?

Is there a way to run a VM hypervisor, such as VirtualBox directly, from say, CentOS? Let's suppose that I want a high-efficiency server, but it can host guests with GUI-enabled OS's. Additionally, ...
2
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1answer
2k views

Mounting another VM's .vdi in VirtualBox

I have two VMs in VirtualBox. For exmaple, VM 1 runs Red Hat, and VM 2 runs Ubuntu. For the Red Hat VM I have redhat.vdi and redhat2.vdi, and for the Ubuntu VM I have ubuntu.vdi and unbuntu2.vdi. ...
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1answer
2k views

How may I Obtain a RHEL/CentOS in OVA Format?

My company has an internal cloud that provisions VMs either in an OpenStack (KVM) or a VMware (ESX) hypervisor. It already provides RHEL 6.4 on the KVM, but I've used up the max number of VMs from ...
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1answer
146 views

Why PowerVM LPAR CPU utilization is negative

For a specific case I compute an PowerVM LPAR CPU utilization to be a large number less than zero. I am fetching the lpar sample event using: lslparutil -r lpar -m P750 --filter "lpar_names=i5lp5" ...