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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19 views

Xenserver Virtual Adapter Limit

My understanding is that as of Xenserver 6.5 and earlier versions, you can only have 7 virtual network adapters per VM. Is there any known (probably unsupported) way around this limitation? My use ...
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13 views

Set custom cpu string for qemu/kvm

I have some virtual machines with software, which licensing check depends on cpu string. They're running on kvm - with default cpu string value - which is QEMU Virtual CPU version 1.7.1 After ...
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32 views

Azure VM - can't connect after ipconfig /release

I was having some intermittent trouble connecting from my Azure VM to an on premise SQL Server instance and, without really thinking about the consequences, I ran ipconfig /release.. Now I can't ...
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0answers
10 views

Virtualized IIS 7 Intranet page is slow when querying against SQL database

OK… I’ve been tasked to figure out why an intranet site is running slow for a small to medium sized company (less than 200 people). After three days of looking on the web. I’ve decided to post what ...
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1answer
22 views

Can I migrate a VM between vCenter servers in linked mode?

Right now I have two separate vCenter servers (one older, one brand new), each managing 3 clusters of hosts. I will eventually need to get 300-500 VM's from the old clusters to the new. If I put the ...
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2answers
28 views

No Internet access after importing virtual machine image to a new host-machine [on hold]

I am on Centos 7 with KVM virtualization, imported a guest machine from .img file with virt-manager, and set up a default NAT network also with virt-manager. Guest machine pings, it is in local ...
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0answers
11 views

How to access infected virtual machine from host vm [closed]

I am using windows xp machine and I want to do root cause analysis of an infected malware machine from my virtual machine. I pinged the compromised machine and I'm able to do it successfully. But I'm ...
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1answer
28 views

Share SSL certificate between VM

I have a SSL certificate for example.com, and I want to protect with it: My home page (example.com) running on a VM in Azure My servlet (servlet.example.com) which is running on a different VM (but ...
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2answers
34 views

Migrating Vmware to Hyper-V - number of Virtual CPU

I'm performing a migration from VmWare to Hyper-V and the Virtual CPU that you are assigning to a Virtual Machine is different and I'd like to know what should be the equivalent values when we move a ...
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2answers
34 views

How to automatic reset linux vm at every boot time [on hold]

I am working on virtual linux based penetration testing lab. I have configured debian linux according to my requirements and lab (like apache, mysql, firewall, network, permissions, etc), I just want ...
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0answers
32 views

Fault Tolerance in Virtual Servers [closed]

I have read about virtualization though I don't have real life experience. One of the ways to achieve is by installing Hypervisor in a server machine and have management software in admin's machine to ...
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0answers
13 views

Why does Vagrant occasionally 'forget' that there is already a VM running when I try to SSH into Vagrant machine? [closed]

I keep running into an issue where when I try to SSH into my vagrant environment, it gives me the following error to the console: $ vagrant ssh VM must be created before running this command. Run ...
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1answer
20 views

Can't install .msu file in windows running in VM

This is to record a fix I found. The issue: running windows 7 in VMware player, when trying to install a .msu file from command line z:\myFilename.msu, got error message: Here Z drive is mapped ...
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1answer
20 views

What rules do I need to remote desktop to a virtual machine where the host has iptables running?

I am attempting to remote desktop to a virtual Ubuntu install (headless on VirtualBox) that resides on a Linux host (Centos 6.6). I can reach it with no issue if I turn iptables off. I feel like I ...
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1answer
33 views

Remote Desktop to KVM Virtual Machine on Centos 7

I have a virtual machine created on centos7. I want to remote connect to it via another computer besides the host. I can not seem find how to access it. I have it set up with a username and password. ...
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2answers
56 views

Can a virtual machine act as a business server? [closed]

I'm new to server setup and have read a bit about the basics of a business server. What I've read is about having physical server rooms with Tower/Rack/Blade servers. My question is, is a physical ...
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3answers
33 views

can plain old Remote Desktop be used to connect to Azure VM?

Am new to Azure. Added new VM. To connect to it, have to open https://manage.windowsazure.com and then do connect command. Would like to save time and use good old Remote Desktop command from my ...
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1answer
10 views

can't remote desktop to new Azure virtual machine

How can I remote desktop to a virtual windows machine that I just created on Azure? ..because I want to move a VisualBasic web app and VisualBasic windows app from my old physical Windows server2008 ...
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0answers
16 views

KVM Virtual Machines and Public IPs

I currently have some Virtual Machines on my business dedicated server using the KVM layer as apposed to Xen or other virtualization methods. I was wondering if I could get a "best practice" on ...
0
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1answer
32 views

Azure VM and Web App in VNET VPN, changing IP and automatic start of vpn

To connect Web App to VM I created a Vnet (point 2 site). Web app can see VM now, but: it can access it just through an IP and not the host name. To use host name, I found info that I have to setup ...
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votes
1answer
32 views

website uses an invalid security certificate

I have website on ubuntu with apache server. Domain is from godaddy. When I type example.com it's running file under SSL (with https). But, for www.example.com it's giving me below error. ...
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0answers
25 views

Hyper-V doesn't recognize when a DVD is swapped

I'm running a Windows Server 2012 Host with five Windows Server 2012 guests. All have the latest updates installed. Whenever I add the Host's DVD drive to one of the guests, the guest will recognize ...
1
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1answer
56 views

Console Developer instance not working by ssh

I have two VM instances in google console developer. I can able to open by ssh for instance-1.At the same time i can't able to connect instance-2 through the browser. I got the following error. ...
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0answers
28 views

kernel panic with “iommu=on” on Centos 6.6

I have problem with virtualization passthrough. I want to enable iommu=on in the grub.conf . but after reboot , kernel panic occur . I don't know how to solve this problem . Am I miss something at ...
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1answer
30 views

nic configuration on a linux virtual machine (rackspace)

I am trying to check my nic speed and duplex setting on a vm I have at rackspace. It is centos 6.4. When I run: # ethtool eth0 Settings for eth0: Link detected: yes This is all I get back. ...
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1answer
36 views

Can I install Windows Server 2012 R2 Essentials on 1 VM and 1 Physical Server?

Anyone with experience with this, can I do this to create a secondary backup Active Directory Domain Controller? We only have 1 Server, and I hear it's best to have at least (2) Active Directory ...
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0answers
10 views

Virtualbox: deleted snapshot, vm won't boot [migrated]

The problem I accidentally deleted the snapshot file located at <virtualbox-folder>/vms/<vm-name>/Snapshots. When I try to start the VM (which the .vdi file is intact), the following ...
1
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2answers
65 views

Why does a Hyper-V, Windows Server 2008 R2 server occasionally stall?

I'm running a Virtual Machine server on Hyper-V that stalls about once a week, effectively rendering certain services it is running to be useless. -The physical host machine CPU: 6-core Xeon ...
1
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1answer
26 views

Can't connect to azure vm's through network discovery

Can't connect to azure vm's through network discovery. I have enabled: Function Discovery Resource publication SSDP Discovery Upnp Device host and DNS client I have turned off all of the firewalls, ...
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0answers
5 views

Share Ubuntu VM folder with Windows to use Visual Studio with Docker Volume [migrated]

I've been using Docker for nearly a year, running it on a Ubuntu 14.04 VM, with Sublime Text 3 for programming in Javascript/php. I would like to be able to also use visual studio for editing the ...
0
votes
1answer
34 views

Virtual web server configuration dmz [closed]

I have 2 rx300 server with Esxi and I want to use one of these as web virtual server with 2 VM running: - Mail server - WEB server for enterprise website and ecommerce. the esxi server has an iscsi ...
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0answers
17 views

How to prevent virt-viewer from asking a password

I am aware of what file I need to create, in order to prevent virt-manager from prompting me for a password. However, I'd like to create a shortcut on my desktop that opens directly the virtual image ...
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1answer
26 views

Azure VMs and load balancing

am new to windows azure. I recently set up a vm and host a website, according to the SLA i need to have 2 VMs in the availability set. Now i did set up the second VM. My questions what do i need to ...
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votes
1answer
19 views

How to edit the XML config file of a domain with virsh? [closed]

How to easily edit the XML config file of a domain with virsh?
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0answers
53 views

something wrong with ftp connection in linux VM and windows host

I use preconfigured and set-up ubuntu minimal with wordpress on vmware. Everything is good, but FTP connection does not work as expected. I try to connect to the FTP server from windows but this gives ...
0
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1answer
32 views

Unlock Azure VM Local Administrator Password

I have been looking at this question and most of it makes sense but a lot of it is going over my head. I'm a software developer and my I.T Admin' has left leaving me with hard job of unlocking a ...
1
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1answer
50 views

Creating a virtual network for KVM guests spanning multiple host machines

I have 5 physical machines running Ubuntu 14.04, all of them are together in a network. These all have static IP addresses. Each of these machines has 1 to 4 virtual machines via KVM/QEMU running ...
0
votes
1answer
31 views

vagrant virtual machine making macbook run extremely hot [closed]

Everytime I run vagrant up to start my Vagrant box for development work my Macbook Pro fan kicks on and churns endlessly. The vagrant box is a Linux virtual server (CentOS) running Railo, Tomcat, ...
1
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1answer
45 views

how do I clone a disk that is represented by a vmdk file?

I have VirtualBox installed on Windows 8.1. I have created a CentOS 7 virtual machine that loads the contents of a detached hard drive that is connected to the PC via a SATA Wire. The virtual ...
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0answers
21 views

Unable to create VM from Azure CLI

When I try to create a new VM from Azure CLI, I get the error: "VM has been created, but there was an error during provisioning. Error: OS Provisioning failed for VM 'testvm' due to an internal ...
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0answers
40 views

Best practices for scaling and capacity planning : VM only ? VM+Container ? Container only ? Cluster ? Something else?

(I can't find a similar question which has been already answered but maybe I do not use the good words as I'm a french student ;)) The closest answer to what I'm looking for is : Scalable Web ...
2
votes
2answers
78 views

How to get public IPs on ESXi VMs?

We have a dedicated server with a hosting provider. We are running ESXi 6.0. The server has a single public IP which is currently being used for the management interface. The provider has also ...
1
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1answer
35 views

KVM Bridged connection not forwarding ports?

Host and guest are both CentOS 6. Guest has an admin panel listening on port 15672 that I am unable to access from the outside. From the guest, curl localhost:15672 and curl vm1:15672 give me the ...
0
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0answers
19 views

Apache returning cached version when modified from Windows

We are running Windows 8 with VirtualBox running Centos with Apache. We have a Windows path mounted in the VM so we can edit content and when we save it in a Windows application the change doesn't ...
0
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0answers
108 views

View PHP error logs on VM - Vagrant CentOS via Puphpet

I have a Vagrant VM running CentOS, which was built from a puphpet file (config.yaml), and I'm trying to get the PHP error logs setup and accessible. config.yaml - PHP section: php: install: '1' ...
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0answers
45 views

Optimizing Performance for a Reverse Proxy Apache Server Hosted on a Virtual Machine

I am relatively new to web hosting, and I'd like to learn how to go about optimizing a server setup. Let me start off by describing my setup. I have an apache server, which sits on a vmware virtual ...
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1answer
32 views

Setting Email Notification for Virtual machine whic are down or services that are stopped in Azure Cloud

We have more than 10 virtual machines in our cloud environment.there are some duration during which our virtual machine get stopped or the services get automatically stopped. We tried with creating ...
3
votes
1answer
107 views

Qemu+libvirt+kvm significant performance lag in VM's

I am troubleshooting poor performance on our new VM host machine which is a Dell PowerEdge R415 with hardware RAID. We've got about 20 VM's running like this: qemu-system-x86_64 \ -enable-kvm \ ...
1
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1answer
30 views

Using query string to redirect/rewrite to different internal IIS sites

I have an Azure VM that is hosting a web application. The application will be accessible via the VM's IP address: http://191.238.112.62 I want to be able to use query strings to redirect to ...
0
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0answers
23 views

MySQL Master migration

I've run into an unforeseen issue regarding a MySQL Master node: The cloud instance on which it's installed is soon to be retired. I've not needed to perform a migration like this before, so I'm ...