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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Change with the command iptables not reflected in the output of the command netstat

Scenario: A virtual machine UU (abbrev for Ubuntu) is serving a web-page. The web-page is accessible on CO (abbrev. for CentOS) which has the Virtual Box on which UU is running. However the web-page ...
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1answer
204 views

openSUSE Leap 42.1 won't boot install as dual boot (works fine in VM)

I have a Leap 42.1 ISO which I have imaged to a USB drive using USBImage on Windows 10. When I tried to boot from USB the first time I got the following message: Trust openSUSE Certificate Do you ...
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24 views

Unable to ssh to virtual machine, yet sshd running and firewall port is open

I'm testing a VM provider's service, and I'm unable to ssh to the VMs I created yesterday. I am able to get in via their web interface shell. The connection just times out: ssh: connect to host xx.xx....
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3answers
134 views

Solaris 10 - Is zone isolation sufficient for segregating high and low security servers?

Let's consider the typical scenario of a Web application that has a web server, application server and database server. All servers are located in different network zones separated by firewalls. From ...
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1answer
41 views

Increase virtual HDD space on VMWare for Ubuntu

I am having an issue following instructions on how to increase from here I cannot get the unallocated space, to merge with the sda1, no matter what I try, I allocate the 30GB, then try it that way, ...
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2answers
25 views

Does 32-Bit OS need hardware virtualization to run o KVM?

I have a 64-bit CPU that doesn't support virtualization. My understanding is Whonix is a 32 bit OS. Will I be able to run Whonix on KVM?
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88 views

CentOS 7, KVM.. auth failed: no agent available

So like the subject suggests.. CentOS 7.2 minimal + KVM install. I had the VMM working via X11Forwarding last night. After a reboot though I get this: authentication failed: no agent is available ...
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1answer
45 views

/etc/issue file does not get reflect without login logout

I changed my /etc/issue file to display IP and system info with background color, and built a system which run on CentOS 7, but problem is when i deploy my machine on ESX it display regular /etc/issue ...
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0answers
60 views

qemu-system-arm problems adding second NIC/bridge

I am running Qemu under a host with two bridge interfaces and would simply like to bridge them to guest NICs. All of this works fine when bridging one NIC either by creating a bridge manually or using ...
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1answer
78 views

trouble installing Oracle Virtual Box Guest Addition in freeBSD 10.2

I am following a procedure on freeBSD wiki to install Guest Additions in freeBSD. pkg install emulators/virtualbox-ose-additions I was able to install emulators/virtualbox-ose-additions without ...
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161 views

GPU Passthrough with qemu - no video output (AMD 7970)

I am trying to setup GPU passthrough on Arch. I followed the PCI passthrough via OVMF wiki along with some other resources online. I substituted a few steps as needed, for example I am using systemd-...
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0answers
64 views

Fedora 23 Server 64-bit install fails to complete on virtual machine in Windows 10

While attempting to install Fedora SERVER from an iso: Fedora-Server-netinst-x86_64-23.iso the installation stalls completely on Creating ext4 on /dev/sda1. I am using VMware Workstation 12 Player ...
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0answers
18 views

What are the consequences of adding a network interface to a bridge?

Context: I have a headless computer/server with 2 network interfaces (e.g. eth0, eth1) running CentOS 7. eth0 faces the world/Internet. A laptop is connected to eth1, and accessing the internet ...
4
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2answers
83 views

Syntax error unexpected end of file [closed]

I have written a shell script which allows me to create a user and assign them to a group but I keep getting the error line 19: syntax error: unexpected end to file What am I doing wrong? Would it ...
1
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1answer
28 views

Virtual machines in a LVM partition or not?

When you create a virtual machine on Debian (with kvm-qemu), the .img file is placed in /var/lib/libvirt/images by default. Do you advise creating an LVM partition specifically for the vm's? Lets ...
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2answers
42 views

Allowing a restricted user (rbash) and to run virsh

We have a virtual win7 machine that needs to be rebooted remotely from time to time. We created a restricted user account with the shell set to rbash so a user can ssh in and reboot the virtual ...
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0answers
79 views

Can't install Virtualbox Xubuntu “Running VMs found”

I'm trying to install Virtualbox5.0 on my xubuntu. On my first installation, virtualBox wasn't working fine so I try to re install it. Now VirtualBox is uninstalling and I can't reinstall it, when i ...
0
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1answer
45 views

Can't Compile Hyperion1.2 with g++ Ming Compiler

Hey all I'm trying to compile Hyperion 1.2 and am getting errors. Here is the command I am using: x86_64-w64-mingw32-g++ Hyperion-1.2/Src/Crypter/hyperion.cpp -o Hyperion.exe And here is a ...
1
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1answer
101 views

MacBook Pro Parallels (Kali) Linux Limited Screen Resolution

I installed Kali Linux 2.0 in a virtual machine running Parallels on my 15-inch MacBook Pro with Retina display. For some reason the max resolution is 1920x1200. I have Parallels graphics set to '...
0
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1answer
94 views

KVM virtualization for CentOS 7

I am having an absolute devil of a time with KVM. It seems every HOWTO out there offers a different list of packages, and I've installed them all: [me@tarantula ~]$ rpm -qa | egrep 'kvm|qemu|virt' ...
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0answers
27 views

Booting from copy of Linux directory structure

I have a folder containing the folder structure of a Linux machine from /. Is there anyway that I can boot from that folder? Ideally I would create a vmdk so I can get a virtual machine out of it. The ...
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0answers
40 views

Installing npm on Mint 17 without using curl or the GUI file-manager

I'm trying to install npm in a Mint VM running on Windows 10 on which I can only use sudo to install and modify directories and have no ability to create directories via the visual file manager. I ...
0
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0answers
40 views

How do I give a gnome boxes install access to the optical drive?

I am running windows 10 in gnome boxes. There is a tab for devices but the selection for cd/dvd appears to be looking for an iso file. I de-selected the .iso file used to install the instance, and the ...
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0answers
19 views

Setup for host and vm ,vm to vm connection

How do I setup network of my oracle virtual box so that below possibility is achieved Setup : 1)Oracle virtual box is setup on windows host 2)Virtual box has two vm's (Vm1,Vm2) Goal: 1)Host ...
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3answers
728 views

Is it possible to install KVM on bare metal?

I have gone through many sites and tutorials for KVM installation and every tutorial says "install KVM under XYZ OS". KVM is a type 1 (bare metal) hypervisor. So shouldn't KVM be installed directly ...
0
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1answer
21 views

Connect VM from Internet

I'm new to Linux and I have created a RedHat6 VM using Oracle VirtualBox. For testing purpose, I have set it up so that I can connect to it from my local/host Windows machine (and those of my friends ...
0
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0answers
121 views

How do I install Remix OS in GNOME Boxes?

Remix OS is an interesting desktopification of Android. It can run off a read-write-able USB stick but it doesn’t have an installer. I can boot it up in GNOME Boxes just fine, but as I’m just running ...
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0answers
20 views

Image artifacts on virtual machine

I have installed windows 7 as a virtual machine on my Ubuntu set up. I have 2 monitors, one for Windows and one for Ubuntu. When I open Windows as a full screen I get these strange artifacts after ...
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1answer
70 views

Allocating VLAN to partition

Forgive me if my terminology if off, here -- I'm fairly new to AIX. I have an AIX server (6.1) running VIO, with two client partitions (e.g. CLIENTA and CLIENTB). The two partitions are running on ...
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0answers
54 views

Python installation fails in chroot

I tried to install Miniconda Python in a chroot: chroot $1 wget -q https://repo.continuum.io/miniconda/Miniconda3-3.19.0-Linux-x86_64.sh -O /tmp/miniconda.sh ...
0
votes
1answer
93 views

Unable to boot a kvm guest via qemu/kvm-tools

I am using ARM Foundation Model to emulate a arm-v8 environment(I need both TrustZone and KVM), and I run a kvm-enabled linux on it as the Host OS, the kernel version is 3.14.0(I clone it following ...
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0answers
43 views

How does Ubuntu's indexation work on a virtual machine?

I have read on https://help.ubuntu.com/community/FindingFiles the following sentence: Thankfully my computer indexes all my files every night while I sleep and I can search just the index, which ...
1
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1answer
82 views

virt-install automatic Debian installation with preseed.cfg

I am trying to script a Debian installation using virt-install and a preseed.cfg file. I am installing into a virtual machine. Currently, I am using an ISO file rather than a network installation. I ...
1
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1answer
193 views

iostat - What does the 'steal' field mean?

In output of iostat there is a steal field, according to man page the field is used to: Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while the hypervisor was ...
0
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1answer
29 views

How to combine several partitions into one virtual drive?

I have 3 partitions sda4 10 Gb ; sda5 15 Gb and sda6 20 Gb . How to create and mount a virtual hard drive to join several filesystems together under debian8?
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27 views

Linux Ubuntu stops responding when specific website is opened

Virtual machine ubuntu would just stop responding once this site is opened >> http://www.webupd8.org/2014/03/oracle-java-8-stable-released-install.html I have to totally shut down the machine and ...
2
votes
0answers
65 views

Setting umask of libvirt/virt-manager for proper permissions in a directory shared by host and guest

I'm attempting to create a directory that is fully available to both the host and guest systems of a virt-manager/libvirt/QEMU/KVM virtual machine, with read, write and execute permissions for non-...
1
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0answers
29 views

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 ...
1
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3answers
118 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 ...
1
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0answers
93 views

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

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 ...
0
votes
1answer
133 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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0answers
61 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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votes
1answer
188 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 ...
1
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0answers
11 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 ...
0
votes
1answer
54 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 ...
0
votes
2answers
43 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 ...
0
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2answers
240 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?
0
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0answers
118 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 ...
0
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0answers
18 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 ...
0
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1answer
294 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 ...