Virtualization is a group of software technologies that allow abstraction between layers of a system. This allows separation between the logical layers of the system, providing isolation, flexibility, and/or the ability to run more than one at a time. This differs from most traditional systems where ...

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VSFTPD does not allow upload with virtual users

I am attempting to setup VSFTPD with virtual users on a server running Ubuntu 12.04. I have configured the server to allow for virtual users to login, but I am having trouble getting it to allow ...
1
vote
2answers
16 views

Samba filesharing to Win7

I'm a novice network admin tasked with setting up a pretty simple file share structure for a small non-profit I volunteer for. I wanted to test this in-house because I've only ever worked with Windows ...
-1
votes
0answers
12 views

VM Requirements for project [duplicate]

I am planning to do a project-part of which-will post digital media content to social networks via OAuth on behalf of users. Since I don't get great speeds in the region where I live, I'm thinking of ...
0
votes
2answers
31 views

internal error: unable to execute QEMU command 'cont': Resetting the Virtual Machine is required

I try to install a kvm img in my vps, but after i install it, it show root@wz:~# virsh list Id Name State ---------------------------------------------------- 12 ...
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votes
1answer
25 views

Unable to init server: Could not connect: Connection refused Gtk couldn't be initialized [on hold]

I try to open virt-manager in ssh session, but get following: -bash-4.2# virt-manager -bash-4.2# Unable to init server: Could not connect: Connection refused Gtk couldn't be initialized this is my ...
5
votes
2answers
106 views

Virtualising a VERY legacy app

Looking for a bit of help on this one. I have a customer who has a VERY old MS DOS application that is written in some 3GL language of unknown origin. The original software vendor went out of business ...
0
votes
1answer
1k views

XenCenter cannot connect to XenServer

I am trying to establish a connection using XenCenter 6.0 to a server where XenServer 6.0 is installed, but it gives me the following error message: Unable to connect to server '192.xxx.xxx.xxx'. ...
1
vote
1answer
35 views

KVM bridged network like in virtualbox

I have a server with 3 NIC's with OpenSUSE 13.2 and KVM installed. I have installed Debian as guest. My network is 192.168.88.0/24, DHCP server is at 192.168.88.1. Now I want my guest to also get a ...
1
vote
1answer
1k views

Cannot connect to Openstack Instance via horizon, but SSH works?

I've got an OpenStack deployment running inside a VM for testing purposes. My setup is as follows: Host Ubuntu x64 with Virtualbox -> Guest Ubuntu x64 with OpenStack -> Ubuntu X64 Server Test ...
2
votes
3answers
887 views

Which hypervisor to play nice with docker.io

I have been running several different virtualisation servers, (ESXi, XenServer, Proxmox/KVM) in the past. I am now in a position where I need to set up a new virtualisation environment that is ...
1
vote
0answers
9 views

When i use virt-install --import, virsh vol-list --pool default return null

I upload my guaji.img file to server, and use following code: sudo virt-install -n guaji -r 512 --os-type=windows --os-variant=winxp --disk #{to_rmt},device=disk,bus=virtio --noautoconsole --import ...
3
votes
1answer
1k views

Blank desktop when logging into a Virtualized Windows 2008 Terminal Server?

We have a Virtualized Terminal Server running Windows Server 2008. When the admin user logs in, everything is fine. When anyone else logs in, their desktop and start menu is blank (they have the ...
0
votes
1answer
956 views

OpenVZ Can't initialize containers after install

I have installed OpenVZ on centos 6 on a dedicated server. I followed quick installation guide on openvz wiki. After installing thru yum, I don't know why, but grub.conf wasn't automatically updated ...
12
votes
3answers
7k views

How much overhead does x86/x64 virtualization have?

How much overhead does x86/x64 virtualization (I'll probably be using VirtualBox, possbly VMWare, definitely not paravirtualization) have for each of the following operations a Win64 host and Linux64 ...
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votes
0answers
11 views

Integrate RHEV 6.5 with OpenStack Juno

Can I use RHEV hypervisor to manage and deploy VMs in openstack environment? I have 4 node setup with 2 compute nodes which one connected to vCenter and Can I configure other node to connect to RHEV.? ...
31
votes
12answers
22k views

Is virtual machine slower than the underlying physical machine?

This question is quite general, but most specifically I'm interested in knowing if virtual machine running Ubuntu Enterprise Cloud will be any slower than the same physical machine without any ...
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votes
0answers
36 views

Centralizing IT infrastructure [closed]

The company I work at decided to start centralizing their IT infrastructure as much as possible. We have different branches (they all have their own AD, DHCP, DNS, Mail, File,... servers) and I have ...
2
votes
1answer
209 views

Can't lock vz with proxmox

I would like to backup my virtual servers to move them away. And when i have started the backup process then i only see this every time: Feb 09 08:40:34 INFO: Starting Backup of VM 101 (openvz) Feb ...
0
votes
0answers
12 views

mounting logical volume attached to vm while vm is running

i am experimenting lvm2 and qemu-kvm. and I want to share and ask some questions. at the end of there is appendix what i am doing. a logical volume on host is attached on guest host (vm) as vda. this ...
1
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1answer
1k views

tap interfaces always disabled in linux bridge

I have a physical interface eth0, and I want to create two virtual interfaces and bridge them with eth0. For this purpose I do: #Create the virtual interfaces tunctl -t tap0 tunctl -t tap1 ifconfig ...
3
votes
1answer
1k views

Adding virtual NIC to HyperV VMs killed my network speed

I have a pretty simple configuration: Windows Server 2012 Hyper V Host, with two VMs (both Server 2012), one for IIS, one for SQL Server. They're all connecting through the physical NIC Last night I ...
10
votes
1answer
13k views

KVM and Libvirt - How do I hotplug a new virtio disk?

I am trying to hot-add a file-based disk to a running KVM virtual server. I've created a new disk from scratch using the command dd of=/home/cloud/vps_59/test.img bs=1 seek=5G count=0 and I was ...
0
votes
1answer
893 views

Error while creating VM using virt-manager on Xen

After a great struggle I got my XEN installed now I am using virt-manager and trying to create a VM. Since my H/W doesnt support full Virtualization using the Para Virtualization installation over ...
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votes
0answers
6 views

Transfer VM without shutting it down? [migrated]

Is it possible to transfer a VirtualBox VM from one server to another without shutting it down? Is there any way to achive this? Does this technology have a name to identify it? As far as I know Xen ...
0
votes
2answers
632 views

xl create doesn't bring up console

I've tryed to run VM in Xen 4.2 using xl command (for what I get this should be standard toolstack, while xm is deprecated). In this case I've the following configuration file kernel = ...
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votes
0answers
22 views

Setting up a template image inside a virtual machine

Providing I have enough system resources is it wise / possible to create a virtual machine and use it as a host for an image deployment? I could use a physical machine, but this way it is easier to ...
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0answers
36 views

Why won't my libvirt VM communicate with apt repositories when wget and ping work?

I'm trying to use Vagrant and Puppet to make it easier to duplicate a multi-server setup for our websites. The recommended workflow is to vagrant up the puppetmaster server specifically first, and ...
0
votes
1answer
1k views

setting CPU cache size and model for KVM guest

Is there any possibility to create a custom CPU model for KVM Linux guests, or at least to modify parameters such as cache size and model name? I know I can set CPU features, topology and pinning and ...
0
votes
1answer
2k views

How do I tunnel an HTTPS proxy through a virtual machine (VMWare)

I have a personal setup at home using VMWare Workstation. I also have a set of Virtual Private Machines that run Squid, and therefore provide me HTTPS proxy tunnels. Using Proxifier, I can tunnel all ...
4
votes
4answers
7k views

Optimising MSSQL 2008 server inside VMWare ESXi

I normally run my MSSQL servers on dedicated servers, but we've taken on a client who is running their SQL Server inside a VMWare ESXi 4 host, and quite frankly it's running like crap. We have ...
1
vote
2answers
865 views

Xen Remus setup

Currently, I'm running the IT for a small organization, and we just purchased a new server to replace our aging Dell poweredge. As the Dell isn't so bad as to be junk, I was hoping to set up Xen on ...
0
votes
1answer
36 views

Secondary IPs on DMZ machines not working

I am moving some virtual machines from my DMZ in a bladecenter over to my new cisco UCS. We are using Hyper-V, and are running Server 2012 on the old bladecenter, and Server 2012r2 on the new UCS. ...
1
vote
3answers
1k views

SmartOS Virtualization with one public IP address

Is it possible? (title of this question) Googling Virtualization with one public IP address yields nothing useful What I have: SmartOS on a dedicated server. Dedicated server has one public IP ...
0
votes
0answers
17 views

How to convert clonezilla backup image to virtual machine?

I have a 30gB tar.gz disk image of a physical debian machine, created by clonezilla - what's the easiest list of steps to follow to convert it to a virtual machine? Do i have to necessarily make .iso? ...
0
votes
1answer
1k views

Can I use XenServer GPU Pass-Through without XenDesktop?

XenServer documentation only covers using GPU Pass-Through ("vGPU") to run XenDesktop's "HDX 3D Pro Graphics." XenServer GPU Pass-Through cannot be used with the XenCenter VNC console and it does not ...
0
votes
0answers
18 views

CoreOs VM getting deleted after shutdown on libvirt

I installed CoreOs on libvirt using link https://coreos.com/docs/running-coreos/platforms/libvirt/. The VM is also showing inside Virtual Machine Manager and working fine. The problem is once I ...
1
vote
1answer
41 views

Unable to ping between ESXi host and Netapp storage on the same switch

I am unable to ping between ESXi host and Netapp controller that are both connected on the same switch and configured for private IP addresses. Yet I CAN ping between 2 Esxi hosts and between 2 ...
0
votes
0answers
5 views

Unable to change IPv4 properties for a VirtualBox Host-Only Adapter [migrated]

Keeps coming up with: In order to configure TCP/IP, you must install and enable a network adapter card. Using Vagrant and ScotchBox if that helps but also tried with a basic Vagrant box and same ...
0
votes
1answer
1k views

How can I set up a VM of Solaris 11 / Sparc on Windows / x86 host? [closed]

I need to test a custom binary that was originally compiled for an earlier version of Solaris on Solaris 11. Being poor, I don't have a spare SPARC server lying around on which I can install Solaris ...
1
vote
3answers
102 views

Long running VMWare snapshots are bad… but what about VMDKs on a ZFS\LVM snapshot?

The VMWare KB and multiple blogs state that long running snapshots are bad for both performance reasons and integrity. They have valid points. Granted this is not with ESXi but rather ...
1
vote
2answers
943 views

Wake-on-lan to trigger virtual-machine with kvm and libvirt

I'm doing virtualization with KVM and managing via the Libvirt daemon. How do I start a virtual machine via wake-on-lan?
14
votes
2answers
800 views

Is running permanently in a VMWare snapshot bad for performance?

I understand that the VMWare KB frowns upon long running snapshots mainly due to two things (In my opinion) Taking tons of snapshots can fill up the data store. Snapshots are simply delta files. ...
0
votes
1answer
36 views

cloned windows 2003 Domain Controller wont let me add windows 2012 as member

I did a P2V of my Windows 2003 Domain Controller. I'm trying to add a Windows Server 2012 VM (Computer name: SQL-SERVER) as a member of the domain but I can't. I can ping to both VMs. I can do a ...
0
votes
1answer
54 views

Preparing CentOS 7 as a virtual machine

I've removed the HWADDR from ifcfg-eth0 and touched /.unconfigured, but when I restart the virtual machine, HWADDR is not added back to the ifcfg-eth0. Is there something else we should be doing?
5
votes
5answers
18k views

How to extend a Linux PV partition online after virtual disk growth

VMware allows to extend the size of a virtual disk online - when the VM is running. The next expected steps for Linux system are: extend the partition: delete and create a larger one with fdisk ...
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votes
1answer
50 views

Git a Windows file system as an alternative to virtual machine snapshots

I am a software developer and I want to test several versions of my software, with different configuration files and different contents in the database (everything running on Windows). For example, I ...
0
votes
0answers
48 views

Amazon AWS EC2 instance Exported to local machine

I have several Amazon AWS EC2 virtual machines that I created on AWS EC2. They were not imported, they were created there. I would like to export these machines in order to achieve local backups, ...
0
votes
2answers
816 views

Getting “Stopped” Hyper-V VM state from PowerShell

I'm using http://pshyperv.codeplex.com/ for managing Hyper-V through PowerShell. OS: Windows Server 2012 This PS module can get VMs which are running and, I guess, should get the ones which are in a ...
0
votes
1answer
1k views

Proxmox: VMs and different public IPs

I have a server which has two NICs and both are directly connected to internet. I have five different public IP addresses available for the VMs. The host machine (Proxmox) doesn't need to use any ...
2
votes
2answers
4k views

How to change boot device on vm installed on Citrix Xen Server to DVD

I have installed Centos 6 on my new Xen Server (XenServer release 6.2.0-70446c). Everything went smooth. System is working fine but now I want to change boot device on that VM to boot from DVD (iso ...