A virtual machine (VM) is a completely isolated guest operating system installation within a normal host operating system. It is a software implementation of a machine (i.e. a computer) that executes programs like a physical machine.

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3
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0answers
231 views

ESXi 4.1 VM gone after hard reboot

I have a serious problem here. After I forced a reboot of a freezed ESXi 4.1 server, a VM is literally gone. When I ssh to the host and run ls -lah inside the datastore, it returnes: ...
0
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0answers
58 views

Migrating a VMware ESXi 3.5 image from one server to another

The primary reason we're migrating is to keep all our configuration settings ... php, mysql, Apache Solr ... the same when we change servers. The existing server is behind a firewall and that's all ...
0
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1answer
198 views

How does migrating a running Virtual-Machine from one Hypervisor to another actually work?

How does migrating a running Virtual-Machine from one Hypervisor to another in a cloud environment actually work? I know that it is possible and that this feature exists. But what does actually ...
0
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2answers
124 views

reached the maximum partitions on my virtual machine

I have a virtual machine and I extended the size since I needed more space. Here is what I have and the message I am getting: I was reading up and I saw some references to diskpart.exe and it gave ...
0
votes
1answer
543 views

Proxmox resize failed: exit code 1

How can I resize the hard disk in proxmox? When I have tried, I get the following error. "command '/usr/bin/qemu-img resize ...
-3
votes
1answer
154 views

VM that allows host to communicate with guest while using a VPN [closed]

My goal: Run a VM locally hosted on my Windows 7 box that runs Windows Server with IIS as the guest VM. I want to communicate with with websites on the guest (Windows Server) with my host (Windows ...
2
votes
4answers
535 views

VM Corrupted, what's the next step?

So one of our older VM's, which usually has no issues, is giving this error now when starting. It keeps going in a loop restarting and turning off with this error message. I figure it's probably ...
0
votes
2answers
681 views

v2p migration from microsoft virtual pc to a physical zotac mini using clonezilla possible? [closed]

I want to migrate a microsoft virtual pc running windows xp to a zotac mini. Anyone have any luck doing something like this with modified version of these vmware v2p instructions ? I would prefer to ...
2
votes
2answers
128 views

When to employ server failover in a virtual environment

This question kind of got me thinking about fault tolerance in DHCP, so I did a little digging in my current environment and discovered that we only have 1 DHCP server per major site in our company ...
-1
votes
1answer
787 views

Two NIC (eth0,eth1), two global IP on same subnet. Became unreachable to IP on eth1 after reboot

I configured a CentOS 6.5 virtual server and deployed it to a remote VMware vSphere environment. We needed two IP address, so I added a virtual NIC and assigned a second IP on eth1. I didn't ...
2
votes
2answers
373 views

How do I give label to vSwitches on VMWare?

I've searched extensively trying to name the vSwitches that I create, but all I can name them are "vSwitchX" where x= some number. How do I give these switches names? I'm using the Web Client. ...
0
votes
1answer
427 views

Add more than 10 vmnet in “vmware server” 2 [closed]

I need to create an esxi 5.5 nested environment on win 2k8 and i would want to do it on vmware server instead of workstation. vmServer has "only" 10 vmnet adapters, but i've 15 nic on my physical ...
4
votes
4answers
6k views

Perfmon - Cannot start data collector set

While running perfmon on Windows 2008 server after creating a data collector set and attempting to start I receive the following error: "The Data Collector Set or one of its dependencies is already ...
3
votes
0answers
433 views

Most VMS refuse to start

Setup: Virtual Host, running server 2012, hosting around 10 production VMs Problem: Last night, 2 VMs stopped with no warning, event log notification, or any information. The rest of the VMs on this ...
0
votes
2answers
177 views

Are computations performed in a Docker container exactly repeatable?

I've read the question titled "How is Docker.io different from a normal virtual machine?", but I'm still not certain how "virtual" docker containers are. For example, in a scientific setting, ...
1
vote
1answer
177 views

A Robocopy job to copy files from VM Windows 2003 to a windows 2008 DFS Share over WAN

I have the following in a bat file running as a scheduled task on the VM Windows 2003 server robocopy "d:\Folder\Sub folder" "\\prod.local\shareddata\Loc\Folder\SubFolder" /S /R:0 /W:5 /NP /NS /NFL ...
0
votes
0answers
67 views

Xenserver firewall consideration

We are setting up Xenserver for a production environment with seperate VMs for a website, billing, control panel, mail. My question is, should we rely on each server's IPtables or is it necessary to ...
4
votes
2answers
1k views

Proper Hyper-V Network Configuration for Windows Server 2012?

We just put our first Hyper-V based web solution online about a month ago (Diagram below). We're having intermittent communication issues between Virtual Machines during periods of elevated traffic, ...
0
votes
0answers
577 views

Any disadvantage of running a virtual machine using files for its drives hosted on freenas/zfs?

I recently got tired of the really slow I/O reads and latency (10-30 MB/s read, not sure for latency but very slow) from a provider I rent a virtual machine from. He uses freenas, the virtual machine ...
0
votes
0answers
21 views

Can't use ssh in a VM Centos [duplicate]

When I tried to connect my Ubuntu 13.10 to my VM Centos 6.5 using ssh appear the message "Connection refused" or "No route to host" even than I change the port, noting change. See here I need to use ...
1
vote
1answer
755 views

Which CPU model to set for guest KVM when processor is Ivy Bridge?

For a KVM host with an Ivy Bridge processor, which MODEL should use for CPU>CONFIGURATION in Virtual Machine Manager? Ivy Bridge is not available.
0
votes
1answer
254 views

Move big file from VM to host hypervisor in vmware vsphere

I have a big file (220G) I would like to move from a virtual machine to its host. The file is actually another virtual machine's disk file. for other smaller files, I would have done that with a ...
0
votes
0answers
47 views

Network setup issue with no connection between virtual machines

I have the following network setup: EDIT: NOTE: WARNING: In the above Windows1 should have the ip 192.168.137.1 The issue that i am having is that every machine can ping and connect to every other ...
1
vote
1answer
115 views

Bridging is breaking the server: KVM configuration

I'm pretty new to networking and just can't get my head around this. I'm trying to setup KVM-Qemu so I can run some virtual machines. The instructions I'm following are telling me to use eth0 and ...
1
vote
0answers
598 views

Configure Windows 2012 VHD to boot in Windows 2008 R2 Hyper-V

I have a server running Windows 2008 R2 and Hyper-V. I use this server routinely to create Windows 2008 R2 and Windows 7 VHDs to boot within Hyper-V and natively. I have created a VHD, used imagex to ...
2
votes
1answer
329 views

DAG: Exchange 2010 and 2013

I have a server 2012 box that is now running AD/GC/DC/DHCP/DNS/Hyper-V and exchange 2010. The domain/exchange started on a sbs 2003 box that I recently demoted after transferring all roles to the ...
1
vote
3answers
392 views

Why aren't Azure Linux VM's keeping time sync with host?

Using Ubuntu 12.04 VM's built last year on Azure. They only seem to get proper time on boot, and drift about a second a day. Is this a normal issue for Azure VM's? I know VM time drift is normal but ...
1
vote
2answers
153 views

How to send a snapshot of a VM

This may sound a bit simple and I could have it answered myself already but I just want to be sure in the process of sending someone a snapshot of my VM. So I am running vmware vsphere client version ...
0
votes
0answers
26 views

Jumphost VM not able to communicate with LAN

I have setup a jumphost VM on WinXP. It has 2 NICs. NIC1, which is the LAN, has the following IP settings: IP: 10.0.0.1 /24 (No default/ DNS configured) NIC2, which has external connections, has ...
0
votes
2answers
69 views

How does a hosting company change a file on a vserver without logging in?

In my virtual server, ssh is not on port 22, I don't allow login with passwords, and I don't allow root logins. Recently, the server was not responding. My hosting company told me that my Apache ...
2
votes
2answers
54 views

Azure : VM interference

In Azure, VMs from different services might be co located on the same physical host. Is there any possibility that one might interfere to the other? In other words, is there a guarantee for isolation ...
1
vote
0answers
317 views

Unable to install windows 8.1 on virtual machine

How can I create a Windows 8.1 virtual machine using Proxmox? I downloaded the evaluation copy of Windows 8.1 Enterprise. However when I boot up the virtual machine, it cycles between the two below ...
0
votes
1answer
961 views

Vagrant w/VirtualBox and Multiple Network Interfaces [closed]

What's the right way to configure multiple network interfaces with Vagrant? Here's the simple Vagrant file I'm testing with: . Vagrant.configure("2") do |config| config.vm.provider :virtualbox do ...
1
vote
1answer
62 views

Application upgrade - in-place or new VM?

We have a virtualised Windows infrastructure and generally have dedicated servers (1 app = 1 server). I am about to commence an upgrade project and am trying to decide if there is any benefit in ...
3
votes
1answer
249 views

How to protect an appliance from unauthorized copy?

At the company I work for, we plan to build an appliance to simplify the deployment of our products. We will probably run a VM with docker containers underneath (containing the products) and a web ...
1
vote
1answer
713 views

High CPU% stolen on EC2 instance at extremely regular intervals

I have a m1.small EC2 instance on AWS running some websites. I noticed my CPU usage have peaks at regular interval of times, exactly every 30 minutes (0:06, 0:36, 1:06, ...). I've checked my crons (I ...
25
votes
4answers
722 views

Will virtualizing a server mean another OS layer to patch and update, more work and greater risk?

I've done a search and have not found anything addressing issues regarding patching and system updates. I've got guidelines that say servers need to have necessary patches. If I have a VM host then ...
1
vote
3answers
4k views

Ideal settings for rdesktop?

For connecting to a Windows 7 virtual machine on a LAN, what would be the ideal settings to specify when using rdesktop in linux so that it feels as close as possible to using a regular Windows 7 ...
0
votes
0answers
115 views

Debian on VM has web access but can't be pinged

I have just installed Debian on a Virtual Machine. I have internet access on the VM and installed SSH. I then did a ifconfig and discovered that the IP address is 10.0.2.15 which is strange as the ...
1
vote
1answer
2k views

vmware | virtual machine vmdk hdd error

After power troubleshooting i get this message Reason: 5 (Input/output error). Cannot open the disk '/vmfs/volumes/4d78ed66-47c6d550-de03-0017a4770002/tory/tory-000002.vmdk' or one of the snapshot ...
3
votes
1answer
4k views

Performance issue of Server 2012 VM on ESXi 5.1 U1

I'm having issues with a VM, as stated in the topic, that runs on ESXi U1, build 1065491. The machine is sluggish and i can't figure out why.. Here's the details. It runs on a Dell T420, has ...
1
vote
1answer
1k views

Qemu - Disk Type, SATA Controller Questions

This is not so much of a question asking for an answer as it is just looking for an explanation. Imagine the following scenario. I have a Windows 7 Laptop, Dell Precicion M4500 series, with an SSD ...
0
votes
1answer
180 views

SSH painfully slow on my local network?

I have a CentOS 6-x64 Server running through VirtualBox on Windows Server 2012R2, but whenever I SSH into it, it's painfully slow. This happens for both Putty on Windows, and SSH on OS X. I've read ...
1
vote
1answer
1k views

Azure two VM's in cloud service, can not RDP to one

I am new to Azure and trying to setup our companies testing environment in Azure. As I understand it for two machines to talk to each other in Azure they need to be in the same cloud service, i.e. ...
1
vote
2answers
334 views

Windows XP VMs on ESXis not pinging each other

I'm running a virual environment of this sort. There's a UCS box that has several VMs. I've setup 3 Virtual ESXi VMs and vCenter Server appliance. Using the appliance, I installed 3 WinXP VMs on the ...
3
votes
1answer
2k views

Hyper-V and AD --> recommendations for small site? [closed]

I have a dilemma about how to proceed with new AD / Hyper-V installation and would appreciate your views, experience and advice. Situation: we are a small company with single site (25 users) and few ...
0
votes
1answer
116 views

No IIS Manager on Windows Server 2012 Essentials

I just got Windows Server 2012 Essentials installed on a VM and I would like to set up some web projects in IIS on this VM. But I can't seem to find how to get to it? When I remote to the machine with ...
0
votes
1answer
164 views

Rails 4 app + nginx1.4.4 + passenger4.0.37 on a headless Ubuntu12.x server running on a VM on my local machine

At the moment, it gives me a disapointing blank page. No 500, no 404, no errors on the nginx log file, just a snowstorm of interrogations. And its been hours of googling without success. So if anyone ...
47
votes
9answers
96k views

Creating a virtual machine in VirtualBox from a physical one

Is there any way to create a virtual machine that you can use in VirtualBox from a physical installation that you have? For instance, if I have Windows XP installed on a physical computer and want to ...
-4
votes
3answers
115 views

Ubuntu 12.4 VM Change Static IP [closed]

I am wondering if you have the option to change the static IP on a Ubuntu VM or if you should just spin a new virtual machine up? Has anyone out there every attempted this?