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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1answer
32 views

ESXi5 VMs are not startup in configuration of VMs startup and shutdown

my client site is 6 ESXi5.0, 2ESX for clone servers ..in this two esx configuration one for VMA servers for Plam secure device and one for APC UPS managers.. for this esxi VMs start up and shutdown ...
6
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1answer
4k views

How to use more than 3 virtual disks in Linux using CentOS and XenServer

I've attached 5 virtual disks to a Virtual Machine in Citrix XenServer. The VM has the xs-tools installed. Initially it said that it couldn't add so many disks. After I installed the xs-tools, it ...
0
votes
1answer
721 views

How can I connect two virtual machines in vSphere ESXi 4.1?

There is documentation available for version 5 (I am running 4.1 per the title), but following the directions raises the error: Incompatible device backing specified for device '0'. upon ...
1
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1answer
5k 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 ...
1
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2answers
753 views

Using Puppet to install, initdb and start Postgres database

We are trying to write a Puppet to provision the Virtual Machine. One of the tasks is to install and populate Postgres database with data. We can decompose this task into a few smaller tasks: ...
1
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3answers
329 views

Time Synchronisation of Virtual Machines without connecting to the Internet

I have a setup of 8 VMWare VMs running across 4 EXSi hosts(IBM Blade Server). For some reasons I cannot connect these VMs or the EXSi hosts to the Internet or any other network. Now I want to ...
0
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1answer
154 views

How big is the performance loss in running a Debian server via VM Workstation under Windows Server 2003 [closed]

I have been using VM Workstation for a while, hobby projects mostly. However, now I'd like to build a drupal-based image DB system, and this legacy Win2003 is the only server available. There are ...
0
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1answer
2k views

Auto-Start Virtual Machines from Hyper-V Manager (Windows Server 2012)

My company has 2 server; one is main server and another one is accounting server. At first, both servers use Windows Server 2008 then I upgraded main server OS to Windows Server 2012 and everything ...
0
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1answer
392 views

Can't ping6 a network interface from a different Ubuntu computer

I cannot ping6 the network interface "tun0" on the host computer from a virtual machine. Using vmware, I installed a Ubuntu 12.04 virtual machine, that is connected to the host machine with NAT. ...
1
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0answers
522 views

Update clock on virtualbox virtual machine with cent os from host

I have a virtual machine, with cent os installed, and everytime I sleep the host computer, the clock of the VM goes out of sync. I would like it to pick up the current time from virtualbox - which I ...
1
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1answer
918 views

XenServer - Does the Hypervisor act as a router?

I have a XenServer installed running multiple OS's testing GlusterFS. My Colleague says that the Xen Hyper-visor routes the connectivity inside the Hyper-visor and it never enters the network. That is ...
1
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2answers
1k views

From VMWare Player to VMWare ESXi with Thin Client

currently I've a PC with a Windows Xp on it, there is the VMWare Player installed. In this VMWare Player there is one VM with a Win2000 on it. The Serial Ports (COM1-COM4) from the Host are integrated ...
0
votes
2answers
674 views

How to configure network for Windows server running in Virtualbox

I have dedicated server (OVH) running Debian 6.0. As it is pretty powerful machine and it's not fully utilized, I want to try and run Windows server on it using Virtualbox. I've already installed ...
1
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0answers
71 views

How to configure on which server a VM is created in Oracle Cloud Control & Oracle VM Manager?

The hardware configuration is fine and I can reach my two servers in my serverpool. The problem is that I have to use two different brand of servers on which server 1 has Virtualization Technology and ...
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votes
2answers
169 views

How many core i should give for each VM process [closed]

I have the following on my development environment :- Host Machine:- 1.Windows 7 professional. 2.Core i7 (8 processes). 3.VM workstation. 4.32 GB RAM. 5.700 GB hard disk. On the VM:- 1.Windows ...
0
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1answer
295 views

Fail to configure Windows Server 2008 R2 updates

I have installed Windows Server 2008 R2 on a VM workstation 9.0 machine. then i have enabled the windows updates which installed around 120 updates . but when i shut down the VM to configure the new ...
1
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1answer
268 views

Is it possible to create an equivalent environment of a KVM guest using QEMU for Windows?

I have a KVM guest in a datacenter that is my production server for a service I am developing. I would like to create an equivalent virtual environment on my Windows machine so I can be sure that ...
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1answer
233 views

Azure extra small vm availability set [closed]

My current extra small vm reaches the limits, so I decided to create a second extra small instance and add the two into a availability set so my service is everytime available and through the load ...
1
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1answer
2k views

Creation of Xen VM fails with Error: Creating domain failed: name=buildbox03

Since a few hours, my xen VM does not want to be created. The VM is quite unstable so I need to destroy and create is quite often. This morning I was able to do such a destroy-create cycle. A few ...
0
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1answer
18 views

intervlan within Virtual OS

Is it accepted procedure to create a dedicated VLAN for internal communication of my virtual OS? this hardware is connected to a switch, when an OS needs a specific service from another OS inside the ...
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1answer
156 views

recipient rejected in a SMTP connection from a OpenVz container [closed]

I'm facing a strange problem. I'm getting a recipient rejected on a SMTP server only from inside an OpenVZ container, while from the physical server everything works fine. Here's an example of a ...
2
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2answers
6k views

Hosting multiple domains on seperate servers but only one public IP address

Is there a way to host multiple websites with different domains on the same public IP address, and when the user enters, say example1.com that goes to one server on my private network(192.168.1.20), ...
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votes
1answer
50 views

Which Linux flavor was mosted used in 2012 [closed]

I would like to change to Linux OS. Mostly i am going to use my desktop for Listening Songs, Watching films and sometimes i will edit audio or video. Can i install Windows OS as Virtual OS inside the ...
1
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1answer
122 views

VPS setup for hosting more than one app (via VMs?)

First of all, I’m not an admin, so excuse me if my questions are kinda obvious/lame – I’m just a ruby programmer, which would like to host few apps on his server;) Lets say, that I’ve got 3 ...
1
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0answers
2k views

Puppet agent (v3.0.1) hangs connecting to master (v3.1.1) in VM behind firewall (with NAT based access)

I am using puppet agent v3.0.1 (On FreeBSD), trying to connect to a puppet master v3.1.1 (On Ubuntu) and the puppet agent hangs with the following debug output: puppet agent --debug --no-daemonize ......
0
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1answer
884 views

Hyper-V VM on Windows 8 - No Network Access

I have a VM set up in Hyper-V and 2 virtual switches that SHOULD allow me to RDP to the VM and for the VM to have access to the internet. I can RDP to the VM, but the VM does NOT have access to the ...
0
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1answer
70 views

Moving Windows Server to the Cloud

We have an ageing Windows webserver hosting web applications through IIS and contains an SQL Server 2005 instance. It runs a range of websites from standard HTML, through classic ASP and up to ASP....
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1answer
567 views

dotCloud Docker vs traditional VM [closed]

I am new to Docker. What are the major differences between Docker and traditional VM? Is Docker stable enough for daily use?
2
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1answer
65 views

Need to run windows service and MySQL, what remote/cloud service options do I have? [closed]

As the title suggests, I need to set up MySQL database which can be accessed by two (or more) different sites. The only snag with this is that we need to run a windows service alongside it (this is a ...
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votes
1answer
93 views

Storage virtual machine. LVM or loop devices? [closed]

Actual situation: I'm the administrator of a virtual machine. The virtual machine is a Debian. This machine will be mainly a storage machine with different services (svn, ftp... ), and a webserver. ...
0
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1answer
97 views

How does a Virtual Server handle Firewalling in relation to its host?

I have a host server running Windows Server 2008 and on this I have a Virtual Server (using Hyper-V) running Windows Server 2003. The Virtual server hosts websites specifically. I am trying to use the ...
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1answer
283 views

Find ddos attack on OpenVZ container [duplicate]

How do you figure out which OpenVZ contain is under attack from a dDoS? I know it is an attack because the b/w and incoming traffic shot WAY up. Can this be done with netstat? Are some attacks not ...
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votes
1answer
182 views

Connecting vmware on two computers [closed]

I have a switch and 2 computers, each one has vmware with a running centos 5.8 on. what i am trying to do is ping centos2 from centos 1 through the switch(10\100). please help.
2
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1answer
124 views

Setting up CentOS/RHEL virtual on VirtualBox

I have a physical server running Red Hat Enterprise Linux Server release 5.5 (Tikanga). I would like to create a virtual machine (using VirtualBox) with a binary-compatible version of CentOS server as ...
-1
votes
2answers
404 views

How to over 500000 cpuunits on OpenVZ [closed]

I have a OpenVZ and i would like to allocate more than 500000 cpu units. But the max i can set is 500000. Does he have a solution to give more power to my vm? According to all the sources I read (...
0
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1answer
180 views

Is there a way to specify versions for programs using Vagrant and Hosted Chef?

I am trying to improve my development workflow but am running into some major roadblocks. Currently, we develop on local Windows machines running XAMPP then after tested on an individual machine, push ...
0
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1answer
700 views

Adding bluetooth dongle to vmware server

I need to test some bluetooth code using a VM. Im wondering how to setup the VM (and thus the server) with a bt dongle to access my device. If I simply plug the bt dongle into the server running my ...
0
votes
1answer
598 views

virsh attach-device for serial device

I would like to add a serial device (console) to a guest via the virsh attach-device command. I have a console.xml file containing: <serial type="pty"> <target port="0"/> </serial>...
2
votes
2answers
404 views

VMWare ESXi: to extend a partition or create a new drive?

Is it better to extend an existing partition or to create a new drive in a VMWare ESXi virtual machine? I'll be using LVM to put the drive in an existing volume group on my VM and to extend a SAN ...
0
votes
3answers
291 views

Is it possible to use only 1 SSL certificate across 4 Virtual Machines?

First of all, I'm not handling the servers. My employers are Japanese but my manager can speak English and he want us to research about the possibility of the setup they are thinking. So the way he ...
0
votes
1answer
188 views

Server Hosted at Data center Internal IP address on hyper-v guest OS

I have a hosted server that’s located at a data center that I pay for monthly (www.liquidweb.com). The server is running windows server 2012 standard. The server is used to host a SQL database and a ...
3
votes
3answers
139 views

Virtual Server Memory not a power/multiple of 2

In the old times (before virtualization), memory came in powers/multiples of 2, because that is the way memory is manufactured. Nowadays that we create virtual servers that don't have real physical ...
0
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1answer
639 views

./pox.py log.level --DEBUG forwarding.l2_learning not working as expected

I have installed openvswitch on my PC with runs Ubuntu 12.04.I also have virtual box running on my PC with 3 virtual machines (Ubuntu 12.04) running on them. are named vm-1 vm-2 vm-3 I have ...
0
votes
1answer
834 views

Xen guest - cannot get network connection beyond the host

I've just installed a XenServer 6.1. It came with a standard configuration, network 0 connected to NIC 0. I created a VM but I can't reach any network beyond the host. From the VM (172.18.32.20), I ...
0
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0answers
146 views

Converting Physical machine to Hyper V VM

I'm running a Physical machine with Windows 7 Ultimate mainly as a file server with 2 hard drives with all the file content stored on D drive with C mainly for OS. This file server is accessible by ...
1
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1answer
6k views

converting a Virtualbox to Xenserver

How can I use my virtualbox image in a Xenserver 6 or above? I mean is there a way to import the image to Xenserver? Secondly is there anyway we can import vmware image to Xenserver without using ...
0
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1answer
615 views

Unable to run windows 2008 R2 after Disk2VHD

I want to convert my physical domain control to hyperv, I created the VHD using Microsoft utility Disk2VHD, The VHD was created, I attached it to HyperV and was able to login. After login the Virtual ...
0
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1answer
59 views

CPU Spikes when Untar'ing File on Virtual Server

I have a RHEL 5.5 on VMWARE running with 64GB Memory. When we untar a file (part of a daily process) the CPU Load sometimes spikes - rendering the server essentially nonresponsive. The disks are ...
12
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4answers
5k views

Can a virtual machine (VM) “hack” another VM running on the same physical machine?

Questions: if a VM is corrupted (hacked), what do I risk on others VMs running on the same physical machine? What kind of security issues is there between VMs running on the same physical host? Is ...
4
votes
2answers
755 views

Use SSHFS on XenServer 6.1

On Xen Server 6.1, to backup my VMs, I use a script based on the following tools: xe vm-list to build a list of the VMs to backup xe vm-snapshot to take a snapshot of the VMs xe template-param-set ...