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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231 views

Insufficient free space: X extents needed, but only Y available

I'm trying to extend a LVM in a Vmware Workstation 12 Pro CentOS VM. Below are the steps I am following and where I stopped because don't know how to folow from there: Create the primary partition ...
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3answers
50 views

Unable to rdp after fw change

VM Windows Server 2012 r2 I was able to rdp to this VM without issues until today. While logged in via rdp I was in control panel > firewall and I noticed that there was a message saying 'use ...
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0answers
21 views

Remove Hardware Support From Qemu [closed]

I am currently experimenting with Qemu 2.4.1 and I'd like the support for few hardware to be removed. Say like USB/Mouse/SoundCard etc. While I was tinkering with the source code, I was able to ...
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0answers
33 views

Virtual Desktop Setup for Small Team [closed]

We have a 24 GB RAM and Quad core Workstation need to be ready as Virtual desktop Server. The need is the Developer(5 users) must be able to Login from LAN or Internet to the Workstation in order to ...
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0answers
85 views

Using KVM with macvtap and VLANs for VM

I want to use the optimizations given for the ASAv (Page 18) which should run with KVM. I am using Ubuntu 14.04 LTS and I should configure macvtap for an higher performance. It just says the ...
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0answers
314 views

“The location constraint is not valid” When Creating Azure VM

I've just signed up for an Azure account to test it out as a possible hosting solution, but when I try and create a VM from the VM Depot I seem to get the error "The location constraint is not valid", ...
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25 views

Can't access Apache webserver setup from virtual machine [closed]

I have installed Apache Webserver on my CentOS virtual machine along with the mod_security, then I start the apache webserver using the following command, cd /usr/local/apache2/bin ./httpd -k start ...
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1answer
35 views

New linux releases on old hypervisor

I have just bought a Proliant DL360 G5 for learning and testing. It's an old machine but it's enough for me. When I looking supported operating systems on HP's support pages, I noticed that the ...
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1answer
51 views

How do I add storage to a VM so that the added storage is dedicated to a new directory?

I have an Ubuntu server with virt-manager. I have an Ubuntu VM running on this host from a qcow2 file. I don't use separate disk files or img files besides the qcow2 file. I want to allocate 50 GB ...
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1answer
42 views

Why doesn't my Web App deployed in an Application Service Environment which is associated with a VNet see my VM?

Scenario: VNET address range is 10.2.0.0/23 with Default subnet of 10.2.0.0/27 Brand new ASE instance, configured to use the VNET from step 1 and on that same Default subnet MySQL VM joined to VNET ...
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0answers
223 views

Virtualbox keeps aborting

I'm running Windows 7 Enterprise on my host, and a Ubuntu VM on Virtualbox. My VM keeps aborting periodically. This is what I see in my logs: VBox: 00:00:35.201091 supR3HardenedErrorV: ...
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1answer
17 views

VMware shutdown host from a virtual machine

There is any way to shutdown my host from one of my virtual machine? I've an host with 2 VM one with linux and one with windows server and I would stop entire host from one of this. Is it possible?
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25 views

xe vm-disk-list >Error Multiple matches VMs found

Dell equallogic on XEN_VERSION='4.1.3' storage size 2tb usage 96% toal virt. alloc. 500gb there is only one snap shot for each vm I dont know who consumed the space? xe vm-disk-list >Error ...
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1answer
27 views

Azure virtual machine connection issue

We have experienced an unstable connection to our azure virtual ubuntu server for the last week. We are using pingdom and it's reporting that the site goes down randomly a few times per day, but only ...
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0answers
30 views

Virutal Server 2012 R2 on VPN and LAN

I'm running a virtual server 2012 R2, the host has only 1 physical NIC. On the server, I have a VPN app, with a kill-switch option (Kill Internet access if not connected to VPN). The Kill Switch ...
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68 views

Load Balancing , Auto Scaling VMs

I am figuring out on how to setup a network of load balancer and auto scaling options for n web servers( Ubuntu VMs with Apache installed) For load balancer sitting in front of n web servers, I am ...
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1answer
38 views

Vagrant VirtualBox with many CPUs

I'm running a VirtualBox VM through Vagrant and I've noticed startup time performance decrease when adding more CPUs to the machine (Vagrant would timeout). E.g. there is a big difference in startup ...
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1answer
48 views

ESXi create instances of the virtual machines for each user

We set-up an ESXi server at our office not long ago, it works well. The users connect to the server with vmware Workstation to use the vms, but some of the employees are complaining that they don't ...
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0answers
22 views

IIS 7.5 (Win7 Pro x64) AppPool stopping and features mising

i struggle with IIS 7.5. ------Settings------------- Firstly i created a setup of IIS 7.5 on Windows 7 professional, created a website, webservices, databases and so on. On the test machine ...
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1answer
33 views

“eth0 does not seem to be present” on RedHat despite new MAC address

I created a RedHat VM (6.5) on an Ubuntu (14.04) server. I changed the IP address to something unique in /etc/sysconfig/network-scripts/ifcfg-eth0. I changed the MAC address for eth0 ...
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1answer
80 views

Troubleshooting SmartOS VM that won't start

I'm running SmartOS 20130405T010449Z with an Ubuntu KVM inside. The Ubuntu VM ran healthily for months, then after a reboot of the physical hardware the vm no longer connects to the network on ...
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2answers
180 views

How to shrink size of raw virtual machine disk image (kvm)?

Let's say I have image.raw with size of 10GB. Inside is one primary etx4 partition (no LVM used), extending to the entire volume. And the data on that partition is, for example, 7GB. This image is ...
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2answers
145 views

Azure VM CPU utlilization metrics (no data) [closed]

I am running several VM's in Azure. Size DS14 and my cpu metrics look like this. "No Available Data" What am I missing? How can I get it to show the CPU utilization of the box?
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1answer
84 views

Xenserver 6.5 High Availability

I'm running xenserver 6.5 and I just configured high availability. I noticed that there is the option for start order. Is there a best practice for start order when it comes to HA? Obviously the more ...
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2answers
33 views

Why are my VMs displayed incorrectly under a single parent entity?

I've never seen anything like this before. I connected to a vCenter with two hosts. The first host has a single parent entity with 33 VMs. They are all stacked together and I cannot expand the entity. ...
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1answer
26 views

No “duplicate host” warning if different netmask (same gateway)

I experienced the following "strange" behaviour on a virtual machine network setup (bridged): host 1 hostname: server_one ip: 192.168.1.2 netmask: 255.255.255.0 gateway: ...
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0answers
26 views

ASP.NET Performance Counters Temporarily Drop To Zero

Having some performance issues with a VM Image (I do not have access to the VM Host, only the guest OS). Trying to determine why there are periods of time ranging from 10-60 seconds where the server ...
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0answers
71 views

tnsping and lsnrctl hung when about to exit – Oracle 12.1.0.2.0 on virtual Windows 7 VM on Mac [on hold]

I am trying to run an Oracle installation on Windows 7 running in a virtual machine (Parallels or VMware) on a MacBook Pro (Retina, 15-inch, Mid 2015). When executing Oracle utilities like tnsping ...
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1answer
199 views

What is the best way to create a reusable Azure Virtual Machine Image?

We're trying to create a template Windows 2012 R2 image for a virtual machine in Azure. Our goal is to clone it into several instances. Unfortunately, we aren't able to connect via RDP to any of the ...
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86 views

Issues Importing Virtual Box(VDI) images into Google Compute Engine

I've attempted to import/migrate an Ubuntu 14.04 LTS Server image I made in Virtual Box into GCE. However, after I upload the image into cloud storage and try to make an image from it, I receive a ...
5
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2answers
87 views

MCE Error Codes/Pink Screen - Should they be a cause for concern?

So I recently purchased a server grade system along with all server grade peripherals. I'm licensed for ESXi 6 and have all recent patches installed. System has been running around 2 weeks now and ...
3
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1answer
69 views

Can I run two domain controllers within VMware vCenter on one physical server?

Before I go to the main question, I'll explain the current situation: My current employer uses VMware vCenter to run a fully operational, virtual environment (mostly domain controllers and RDP ...
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2answers
148 views

VMware ESXi, uploaded virtual machines won't start

We just installed a new ESXi server to our office (LENOVO TS140, ESXi 6.0.0). If I create a new virtual machine on ESXi, it works well, but we have a lots of old virtual machines (not that old though, ...
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34 views

Selenium Grid - Remote Desktop Services vs Hyper-V VMs

We want to create multiple (say 50) virtual environments to run concurrent Selenium tests in against a certain browser (say Internet Explorer). The most common way to configure this appears to be ...
3
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1answer
60 views

VM-VM only network with KVM

I'm trying to create a VM only network where guests can speak to each other, but not with the host. I want to isolate the host for security reasons, as multiple test users will be using the VMs. ...
2
votes
1answer
639 views

Why is my Azure VM (D3) Disk I/O crazy slow?

I have setup a D3 VM running Windows 10 on my Azure account. Unfortunately the Disk speed, on both the C (200GB) and D (100GB Temp) are EXTREMELY low. Less than 1MB/s when viewed through Task ...
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0answers
20 views

Profiling agent failed to upload log snapshot to Microsoft Azure storage account

I publish Azure Web Role project with CPU profiler on. When I request Profiling Report, I get 19:04:43 - Connecting to the Profiling agent on the VM instance 19:04:44 - The Profiling agent is ...
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0answers
203 views

Docker Container can ping, but cannot telnet from Virutal Machine

I have a host (Ubuntu), a docker container (centOS), a virtual machine (centOS). - My Host has 2 interfaces, one is eth0 "192.168.0.4", one is docker0 "172.17.42.1" - My docker container have IP ...
4
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3answers
191 views

How can a VMware datastore be moved to a different device?

I have two disks physical disks and only one datastore at the moment. I would like to move my datastore from Disk2 to Disk1. I'm sure this is possible but I cannot figure out how to do it from the ...
0
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1answer
62 views

Cannot access supervisor web interface on guest machine from host

I set up an ubuntu virtual machine using Vagrant. In my Vagrantfile, I have configured a private network like in the example: config.vm.network "private_network", ip: "192.168.33.10 In ...
2
votes
1answer
80 views

What memory settings aside from page file size are significant for debugging performance issues on Windows Server 2008

While debugging a problem with slow hg cloning from Windows clients, I found that hg clone performance could be significantly improved (10x faster) on EC2 2012 virtual instances by reducing the ...
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0answers
248 views

Can't connect to the data port with FTP server running in Vagrant (passive mode)

I want to connect to Vagrant via FTP and the data connection is failing. I can actually connect and login, but when trying to enter passive mode and list the remote directory, the DATA connection ...
0
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1answer
28 views

virtualbox - how does default networking works inside virtualbox?

So I am trying to configure a virtual network and all is working fine but what I cannot seem to understand is that how does the virtualbox eth0 interface can by default ping my usb modem IP? I did ...
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0answers
19 views

Xen hypervisor randomly shuts down machines

We have got an ubuntu 14.04 LTS server with XEN software installed. Everything worked fine untill a day ago a Windows server stopped working (Windows server 2012) Now it's shuts down every 30 minutes ...
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1answer
158 views

VM Workstation in azure Hyper-V

I have a Virtual Machine windows server 2008r in Azure, wich I connect with remote desktop. When I'm in the Virtual Machine of Azure, I have a Phisical Virtual Machine of linux, with VM Workstation. ...
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1answer
589 views

The application encountered an error while attempting to change the state of Virtual Machine over windows server 2008 R2 sp1 host

I had to shut down my VM on the Hyper V host and when i tried to start it again. i started to have this Error Application error when you attempt to change the status of Svv-Log01 Did anyone face this ...
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1answer
234 views

Cannot connect to SQL Server from local machine to virtual machine hosted on another PC

I have installed SQL Server Express 2008 R2 on a Windows 7 virtual machine - this virtual machine is hosted on another PC on our network. I would like to connect to the server using SQL Server ...
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2answers
29 views

Is having a network hosted Windows installation on a Virtual Disk Image where approximately 20 users use via VirtualBox a viable idea?

I've been considering an idea for a small business secure workspace where each PC is using a flavor of linux, like Xubuntu, so that people can't easily install applications or modify the workstation ...
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1answer
116 views

Host not responding - vCenter

Few days ago I configured a new vCenter server behind the NAT for my VMware Hosts. Everything is working perfectly on the Management LAN, but the problem is when I'm trying to add a server outside my ...
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2answers
101 views

anything alternative to VMCI technology in ESXi <5.5 for ESXi 6.0?

I have written two applications which I should place them on two different virtual machines. These two apps, need a fast communication between them. as I needed more than 1Gbps, CPU friendly link, I ...