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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1answer
63 views

Cluster vs Virtualization [closed]

I’m working in releasing a video hosting website (files are from webcams) Each file size will be less than 1 mb. I would like to be able to easily extend my storage capacity and have high ...
1
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7answers
8k views

VMware Workstation guest OS (Windows) resets date/time to host on restart [closed]

Everytime I restart my windows guest machine, it resets the date/time to the host date/time. How can I change it permanently? UPDATE: Time sync is already disabled in VMware tools
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1answer
348 views

Ping (DUP) with Linux bridges and tap devices

http://imgur.com/qPoy2QJ I have two Linux (Ubuntu 12.04) VM (running on KVM) that networked together using two Linux bridges as shown above. The network interfaces are Linux TAP devices. The problem ...
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0answers
15 views

Prevent container from shutting down at console exit

As the manual clearly states, an LXC container automatically destroys (shuts down) itself when you exit the console. However, we're using these machines as servers (sshd, sometimes apache, ...) and I ...
2
votes
1answer
54 views

LinuxContainers arch-linux double login tty

Since upgrading to LXC 1.0 with the new Arch Linux template when I create a new instance I have a double tty when invoking: lxc-console --name <container> This is the output: Arch Linux ...
0
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1answer
1k views

Dell 12G R720 Hyper-V host virtual/physical NIC stops working

On the host 1 physical adapter is plugged into our network, on host itself I have Hyper-V role. I have created a external switch and binded it to the physical Broadcom NetXtreme Gigabit Ethernet, box ...
0
votes
1answer
495 views

Can I run virtualbox 64bit OS in a Azure Virtual Machine?

I installed VirtualBox 4.3.2 in my Azure Virtual Machine, but I can't open a 64 bit VM (Windows Server 2012 R2 64bit). Virtualbox send a message about not having vt-x support Can I configure my ...
18
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10answers
32k views

Running 100 virtual machines on a single VMWare host server

I've been using VMWare for many years, running dozens of production servers with very few issues. But I never tried hosting more than 20 VMs on a single physical host. Here is the idea: A stripped ...
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votes
1answer
110 views

Error when trying to install Ubuntu 14.10 Hyper-v VM from Virtual DVD .iso [closed]

I'm trying to install a Hyper-v Gen 2 Ubuntu 14.10 Virtual Machine via a DVD .iso that I have attached as a virtual DVD on my Windows Server 2012 R2 First, two things that I know will be asked: ...
9
votes
2answers
3k views

Support for virtual IPMI in a VM?

This might be a silly question, but... Is there any hypervisor or other virtualization solution which supports a "virtual IPMI" for virtual machines? I.e. would allow access to something that looks ...
1
vote
1answer
42 views

Windows DHCP MAC-Range to Scope allocation

I wonder if there is any options to map a specific Range of MAC addresses to a specific DHCP address scope. The thing is, I want a specific scope for address allocation to bridged Virtual Machines ...
0
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1answer
193 views

How can I configure multiple tap interfaces for a single KVM virtual machine

I am trying to setup a VM using Linux KVM for a F5 BIG-IP VE deployment (used in a lab) ...
1
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1answer
69 views

hyper-v error manage VM

I have a problem in the management of the machines in Hyper-V, when I try to open the console I get the following error: an error occurred while attempting to launch the Virtual Machine ...
2
votes
1answer
3k views

hyper-v fails when attaching more disk to VM. The VM won't start and generates an error

I'm lost at what to do about this: Hi... System: Windows 2008 R2 Hyper-V farm running with failover cluster with a EVA 4400 as backend. When I attach a new disk to a VM it fails when I try to start ...
0
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0answers
19 views

What is the maximum number of VM which can be used for a single baseimage? [duplicate]

In my current project I am using KVM hypervisor and qcow2 as a base image. On that base image I am creating many VMs, say 100s of VMs. So, my question is that will that baseimage be a bottleneck for ...
0
votes
1answer
49 views

Cannot Properly Manage Server 2012 r2 Hyper V Core

http://i.stack.imgur.com/hYak5.jpg I have just installed the Hyper V 2012 r2 Core system. I was able to name it, add it to the domain, even RDP into it (which is just worthless). However, When I ...
0
votes
1answer
24 views

Native software on dedicated machine vs virtualizing services on dedicated machine

I used to have a VPS, and the benefits of a VPS are pretty obvious: instant snapshots, instant booting, instant and one click changes rollback (so if I mess up really bad, even losing network ...
4
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2answers
177 views

How to interpret values of Perfmon counter Hyper-V Hypervisor Virtual processor\CPU Wait time per dispatch

So there is a lot of guidance on the web that advises tracking the values of the Perfmon counter Hyper-V Hypervisor Virtual processor\CPU Wait time per dispatch as the nearest Hyper-V equivalent of ...
0
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1answer
343 views

“Target the specific user you will be using and assign it user id 0/group 0”

I am trying to virtualize an Ubuntu machine using VMWare vCenter Converter, but ran into permissions issues. I followed the instructions of part 1 and 2 on this page but when I got to "For Ubuntu ...
7
votes
7answers
7k views

Get list of DHCP clients with KVM+libvirt?

I have several VMs running on Ubuntu 9.10 via KVM+libvirt. I want to be able to find out the IP address that has been assigned to each host without physically opening a physical "console" to each ...
18
votes
1answer
537 views

Virtualized MS-DOS computers can't communicate over IPX

I converted 2 MS-Dos 6.22 machines to virtual machines. Both computers have software that communicates over NETBEUI and IPX (I came to that conclusion after inspecting autoexec.bat - It loads IPX ...
2
votes
1answer
364 views

How to retrieve virtual machines from a pool via API in oVirt (RHEV)

In oVirt (Red Hat Enterprise Virtualization) you can create a Virtual Machines Pool to allow your users to retrieve virtual machines from this pool. I found how a user, in the RHEV User Portal, can ...
0
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1answer
92 views

Newbie to KVM/oVirt/ovs looking for clarity

I have some experience with vSphere, but am looking to get up and running with KVM. I've been looking at using oVirt as a VCenter type manager but, being new to all things ...
2
votes
2answers
88 views

How to measure boot time of a VM from host machine?

On both Guest machine and host machine, I am using Ubuntu 12.04. As a hypervisor I am using KVM. I want to perform some experiments related to boot-storm and I have created all other scripts to ...
10
votes
11answers
6k views

Run virtual machines without a host

I know that I can have virtualization software (Virtual Box, Virtual PC) running on Ubuntu or Windows and run guest operating systems in it. Is it possible to run virtual machines without a host OS? ...
1
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0answers
114 views

Access to equally defined VM in different VLANs

I have a working libvirt cluster and in order to perform some paralellization I have duplicated it. At the moment my scenario looks like this: two clusters whose VM definitions are exactly the same, ...
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votes
1answer
508 views

Install ProxMox AND cPanel [closed]

I'm in the process of upgrading our server to something much larger. This new server has CentOS and cPanel/WHM installed by default. My question is, is it possible to install a VM solution like ...
0
votes
0answers
176 views

Backup KVM running machine safely

I read some solutions to make backups of running VMs, but all take offline snapshots that seems difficult that will work if the VM has high I/O load. I have tested but i have doubts about the process ...
0
votes
0answers
106 views

OpenVZ container doesn't start, “unable to read inode block”

I'm having some problems with OpenVZ/Ploop. Installed OpenVZ on a brand new thinkserver today. My /vz/ partition is ~5.2 TB large (4x2TB RAID 5). When I try to create/start containers ploop fails with ...
0
votes
0answers
22 views

VHD to physical disk conversion failed

We have had a happy HyperV running with several VMs until motherboard crashed. On another MB we had to install a new OS, of course HyperV does not see VMs. Tried to use VHD2Disk using a blank ...
1
vote
2answers
39 views

Nginx: possible to use SSL certificates from different authorities on one IP address?

I'd like to know if it's possible to have two Nginx virtual hosts sitting on the same v4 IP address. I know there exist SNI but I have two basic (no SAN, no wildcard) SSL certificates from two ...
1
vote
1answer
148 views

Create a local cluster with Vagrant/CoreOS/Docker

I'm trying to create a local environment for testing purpose composed of: a Vagrant CoreOS Cluster (3 nodes) a Docker container launched with an Nginx image loaded, launched on one node I've ...
0
votes
1answer
52 views

Hyper-v number of Virtual Processor (Virtual CPU) on Virtual Machine

VMware world recommends that you only add one Virtual CPU on each Virtual Machine unless that your application requires detect more than one CPU. Does this recommendation could be applied on ...
2
votes
0answers
79 views

Debian does not shut down interface with ip link set … down

I have a really specific question for a trunk-testing environment. I have this network setup: +------------+ +------------+ | | +-----+ | | | eth0 ...
0
votes
0answers
69 views

Xen server on hetzner with two public up and local virtual network

I use Xen server on my office with a Dell t310 with only one public ip. The public ip is assigned to the router that forward ports to a guestos running endian firewall that route traffic to an apache ...
4
votes
5answers
30k views

How do I resolve a 503 Server Unavailable connection error on VMware ESXi?

I have a VMware ESXi server which has been up and running for nearly 200 days. The past few days, when I try to connect to it using the VMware vSphere Client, I am unable to connect. After entering my ...
4
votes
2answers
376 views

How do I make all Xen guests use their host clock value?

I've set up Xen server under Linux with several guests running, and all was well. After some time I've noticed the clock on the server drifted away, so I installed 'ntpd', and the clock was back to ...
0
votes
0answers
36 views

No connectivity between azure VMs

In my azure environment, I have 4 VMsx running Windows Server 2012 R2 10.0.0.4 (AD, DNS) 10.0.0.5 (ADFS) 10.0.0.6 (MSSQLSERVER) 10.0.0.7 (IIS) All of the machines are connected by an azure virtual ...
0
votes
2answers
45 views

Multiple IP addresses on host and one on kvm

I've recently configured my network using advice from this question but now I need to configure this a little different. I'm using Debian distribution. I have one dedicated server with 3 IP addresses ...
0
votes
1answer
40 views

Ubuntu Subdomains on the Fly

We're a trying to accomplish the following on a Ubuntu Server 13.04 installation. We host SaaS apps for customers are are currently moving off shared hosting environments due to limitations with ...
3
votes
1answer
421 views

Can vSphere PowerCLI cmdlets execute from a PS1 file?

I'm looking to write an admin script that will: Delete a VM from vSphere Delete the VM's DNS entry Release the VM's IP address with our Windows DHCP server I can accomplish the first item via ...
0
votes
0answers
31 views

ISCSI drives suddenly lost partitions

We have a VM host, and each VM is given an ISCSI volume to boot off of. These ISCSI volumes are stored on a second server. Today, we had to reboot the VM host because ISCSI hosts kept going into ...
9
votes
3answers
4k views

use LXC under heavier virtualization (Xen, KVM,Hyper-V,VMVare)

Is it possible to use LXC under heavier virtualization (Xen DomU, KVM, Hyper-V, VMVare) ? I would like to use it as security (isolation) tool, the ability to limit resource consumption is not priority ...
6
votes
5answers
760 views

Can I send clients a pre-configured Virtual Machine?

I am not very well acquainted with VM Ware and Virtualization but I am investigating the feasibility of creating a VM Instance using VMWare, Windows Server 2008 R2, and shipping that VM as a complete ...
0
votes
0answers
75 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
3
votes
6answers
561 views

Build two servers or buy one from manufacturer?

I'm replacing three 7 year old servers with one new one. We are a small k-12 independent school, running AD, exchange, a database, and 3 3rd party apps. From my research it looks like I can build 2 ...
5
votes
9answers
294 views

Why is Virtual PC being bundled with Windows 7 significant? [closed]

As I see it: Microsoft has always provided backward compatibility for legacy applications; As far as the end user is concerned, things won't be behaving any different from what they normally expect. ...
0
votes
1answer
42 views

Virtual PC/Server software intalled on SBS 2011 Essentials that hosts other Windows OS?

I'd like to know if anyone else has successfully installed Oracle Virtual Box, VMware Workstation, or Virtual PC 2007 software on SBS 2011 Essentials that hosts other Windows OS without causing any ...
1
vote
1answer
795 views

How to edit or create roles in Proxmox VE?

How can I create Roles or edit them with specific privileges in Proxmox VE ?
1
vote
1answer
85 views

IBM BladeCenter H networking

I'm new to the IBM BladeCenter H, and I'm trying to figure out the networking side of it. I've installed a windows server OS on one of the blades, and am trying to fiddle with it's network setup ...