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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9 views

How to uninstall Opendaylight controller [on hold]

I have Ubuntu iso image on virtual machine install on VMPlayer. I have installed Mininet and opendaylight controller on it. But now i want to uninstall only opendaylight controller. And I am not ...
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votes
1answer
35 views

Does VMware ESx server run a operation system of its own to manage the the hardware(like a host OS) inside of VMware ESx server

Does VMWare ESXi software run a host operating system in itself (bare metal hypervisor). I know that the vSphere client is used to manage the VM's created inside of the server but what about the ...
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votes
1answer
38 views

Can I configure IO error proof Linux on virtualized environment?

I believe everyone who are working on virtualized environment like Xen has experienced some sort of IO problems which lead to read only mode for guest machine. We experience same issue couple of times ...
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votes
0answers
31 views

the different Virtualization types which is the latest [on hold]

I have been learning about virtualization recently and I came across certain concepts like Full virtulaization , partial virtualization, paravirtualization and Hardware assisted virtualoiation. So, ...
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0answers
18 views

Apache : Dynamic VirtualHosts to host any incoming domain? [on hold]

is this possible ? <VirtualHost *:80> DocumentRoot /1 ServerName * ServerAlias * </VirtualHost> if this is possible.. the next question is.. instead of showing them DocumentRoot ...
0
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0answers
13 views

Building failsafe system [on hold]

As an assignment I have to realize failsafe webserver using Virtual machine. I have been trying it using a separate java program on host to monitor heartbeat of the vm and redirecting the http ...
0
votes
0answers
26 views

Removing Mdadm raid system and boot with a single disk

I have a linux system running a RAID 1 (MDADM) system. For virtualisation purpose, i need to remove this system of RAID and then boot again the machine with just the main hard disk. Now.. I am not ...
0
votes
0answers
4 views

How to use same Snapshot as a base for multiple VMs in VirtualBox [migrated]

I've got a VM with only the OS [Ubuntu] running clean. I'd like to share this OS installation as a base for multiple local VMs I plan to have in order to save disk space/multiple installations. Is ...
0
votes
1answer
21 views

Kerberos in production on virtual machines

At the moment I am investigating the possibility to use Kerberos as the primary authentication protocol for our cloud structure. We'll probably follow through with this idea and for the sake of HA the ...
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votes
2answers
37 views

How many websites per virtual machine? [duplicate]

We are currently hosting about 10 of our own various websites on a virtualised host. Each website is hosted by its own virtual machine with its own apache. Some of the sites connect to a shared ...
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0answers
21 views

Two VM's on the same server: What common ties can be found between the two websites? [on hold]

OVERVIEW: I've got a buddy who's partial-owner of one company, and also has a personal project in a closely related industry. It sounds like the two are completely separate, but if any competitor ...
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votes
1answer
68 views

Why Linux guest VMs performs better than Windows ones in terms of network?

I am testing the network performance of VMs in Xen and Hyper-V using Iperf and Netperf. In both hypervisors I found a Linux guest VM in different modes is having a relatively high performance than a ...
0
votes
1answer
23 views

Backup and restore vCenter 5.5 in a Lab.

I need to take a copy of our production vCenter and run it in a lab for testing purposes. This part isn't my strong point.How do I go about this and is there any official documentation pertaining to ...
0
votes
0answers
7 views

Dynamips Virtual Router not pinging external host after bridging

I have setup a virtual router image with dynamips and setup bridging between tap0 interface of the virtual router and eth0 and br0 with commands [root@cisco_host]# brctl addbr br0 [root@cisco_host]# ...
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votes
0answers
38 views

How to check the OS is running on bare metal and not in virtualized environment created by BIOS? [closed]

Is there any software available as a Linux, *BSD, or Windows program or boot-image to check (or guess with good probability) the environment an operating system is loaded onto is genuine bare metal ...
0
votes
0answers
28 views

clonehd takes 2 hours for a 100GB disk. Expected?

I have a VirtualBox image using VDI and flexible size. Right now the physical DVI file 94GB. The host is an Ubuntu server and the guest is a CentOS 6.4 with ext4 partition. The host is using a sata ...
0
votes
1answer
38 views

How to speed up QEMU on Windows host?

We want to run our Ubuntu 64bit web server virtualized/emulated on a Windows 64bit host. Intended use is to distribute the VM to customers who might not have "elevated" or "admin" rights on the ...
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votes
1answer
20 views

Host CPID, Geast CPUID and UserCPUID / what are they?

i found out that there are some IDs associated to the CPUIDs in vmx file of each virtual machine, these IDs are; hostCPUID.{Num} hostCPUID.80000001 guestCPUID.{Num} guestCPUID.80000001 ...
0
votes
2answers
36 views

Cannot ping a VM from a Hyper-V host

I am facing a weird situation in my network environment. My infrastructure looks like this: I have a D-LINK DIR-635 acting as my default gateway (192.168.0.1) A physical Windows 2012 Server ...
0
votes
1answer
29 views

Virtual guest: NTP sync with host

Is there any way to get a virtual guest to only query it's current host for NTP? I'm not talking about configuring ntp.conf with the host's IP here either as VLAN's & firewalls may block that ...
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votes
1answer
23 views

Bochs and Bios Canonica VirtIO SCSI Disk Device running Windows 2008 R2

I have a Windows 2008 R2 server I can only remote this server so I need to know what type of virtual environment is hosted on, The Bio Manufacturer shows Bochs and hard disk shows: Canonica VirtIO ...
2
votes
2answers
41 views
+50

Setting the noatime flag for filesystems inside an lxc container

My host filesystem is ext4 mounted with the noatime flag. But inside an lxc-container, the flag is absent. Here's the output of mount on the host: /dev/sdb1 on /home type ext4 (rw,noatime) And ...
0
votes
0answers
3 views

network adapter not listed in my virtualbox vm [migrated]

I am trying to SSH into a virtual machine I have set up in virtual box from my Windows 7 host machine. I would like to make several development machines and ssh into them from my host machine, as well ...
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votes
0answers
35 views

Pfsense on intranet ip address

I wish to secure the traffic between ESXi server vms and other physical nodes on my network. What I have: A public IP address on the WAN port of the Wifi router A dedicated server with 2 NIC ...
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votes
1answer
29 views

Can you use CGroups inside an OpenVZ Container?

just a quick question, which i have had trouble finding the answer to: The OpenVZ Authors have been contributing a large amount of code to the linux kernel, in order to get virtualization features ...
1
vote
2answers
44 views

Migrating Hyper-V VM's to CentOS 6

I have tried to search this around in google, but I haven't actually found anyone migrating from Hyper-V (Windows) to CentOS 6, only the other way around. So, I was wondering if there are any pointers ...
1
vote
0answers
35 views

lxc command always “get error 4 in libc-2.12.so”

I've tried several time to find out why suddenly my LXC not working, I use dmesg | tail it shows: lxc-start[2777]: segfault at fffffffffffffffc ip 000000390347b82c sp 00007fffd9046c18 error 4 in ...
0
votes
1answer
22 views

How to add an existing encrypted vHDD to a new virtual machine?

I am using VMware workstation with encrypted virtual hdd-s. I tried to use one of the vmdk files as an hdd on another virtual machine, but when I try to add them as an existing disk, I get the ...
1
vote
2answers
63 views

Can PXE boot of Hyper-V VMs be disabled?

Hyper-V virtual machines have the ability to PXE boot. Obviously, PXE boot raises some security concerns. The problem is, unlike a typical physical machine's firmware, there isn't an obvious way to ...
0
votes
2answers
50 views

How to block a VM from accessing other machines on network - XenServer

This might be a little far fetched and might not be possible. I have a virtual machine that will have files on that I don't want people to be able to transfer off - they are allowed access, I just ...
1
vote
2answers
38 views

vSwap vs Burstable RAM for OpenVZ

What is the big difference between vSwap and Burstable RAM? Does vSwap create and cause I/O by using disk? I know SWAP will use the disk so is vSwap the same as swap just virtualized in the ...
1
vote
2answers
61 views

Xen PV, Xen HVM and KVM

Am I correct that you can boot up any operating system with either of these virtualization types as they act as a bare metal machine and compile your own kernel? I am looking to switch over from ...
1
vote
0answers
45 views

How do I get IPv6 packets to my KVM virtual machine?

My setup is: Debian Wheezy x64 on the host and on the guest. I am using a tun/tap setup to connect a virtual machine to the host. The KVM network options I use are: -net ...
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votes
0answers
27 views

P2V Conversion keep failing

I'm try to convert our Windows 2003 STD server into VM but it keeps failing. I'm doing Online Conversion and get the following error: Error (2916) VMM is unable to complete the request. The ...
-1
votes
0answers
41 views

Different virtualization technologies without VT-d (IMMOU) [closed]

I need access from a vm for a special ISDN pci adapter. Did anybody made PCI cards work with KVM/Virtualbox with hardware which does NOT support vt-d? As of my research shows: 1, KVM In order to ...
0
votes
0answers
54 views

CentOS Host KVM Virtual Machine running a Windows VM - No internet access

I've installed a KVM virtual machine on a CentOS host using libvirt. I've also set up a bridged connection from the interface en0:4 running on IP x.x.x.15 to br0. (The IP is a public one). Running ...
2
votes
0answers
30 views

LXC containers act differently on difrent servers [closed]

I have two physical servers A and B. I wanted to upgrade them from Ubuntu 12.04 to 14.04. Here is my current setup (if I'm left out any info here, let me know and I'll add it): Server A: Ubuntu ...
0
votes
0answers
24 views

Openstack: Starting multiple shutoff intances

I am using Openstack Icehouse running on Ubuntu. After rebooting Compute node all instances that were running there will be in shutoff state. Is there way to restart them all at once? Only thing I ...
0
votes
1answer
65 views

Windows 2012 R2 Hyper-V vs Datacenter edition

We need to deploy a Windows 2012 R2 Hyper-V cluster with 4 physical server. We going to use Datacenter edition licencing, but consider installing the Hyper-V edition on the serveres. Just to install ...
0
votes
0answers
38 views

Error while booting VMDK in VMWare Player; UNMOUNTABLE_BOOT_VOLUME

Hi all and thanks in advance for taking the time to read this. My employer has provided me with three VMDK files, each representing a different hard drive of a VM. My aim is to get these converted to ...
0
votes
1answer
36 views

Image Sharing File Server on Windows Storage Spaces.

I am working on Windows Storage Spaces File server, but I ran into this strange situation when transfer to client systems is aroung 300kb/s. There are two SS servers on the network - the other one is ...
0
votes
1answer
62 views

What is the safest way to convert a Windows Server 2012 Hyper-v system to Linux with KVM?

I have one server running several different virtual machines with Hyper-v for different clients. All of my clients have given the OK to a maintenance window over one day on a weekend in the future. I ...
0
votes
2answers
27 views

unable to connect from other hosts to vm client

I'm building a vm client from a host using the virtual network 'default': NAT setting in virt-manager kvm which makes a bridge (virbr0) using my host's nic. The vm client receives the default ip of ...
0
votes
1answer
102 views

How many VMs per core/vcpu can be run in OpenStack

I'm working on a simulation tool to model VM behavior and migrations on Cloud environments. I deployed a little OpenStack cluster with 4 nodes on cheap regular hardware PCs at the university using ...
2
votes
1answer
170 views

Can a Docker container uses the full CPU power and memory of the host OS?

I am new to Docker, but I have experience of using VM and hypervisor. Referring to Docker introduction and this image, Docker containers are isolated but share the same host OS. If we deploy only 1 ...
1
vote
2answers
71 views

Server 2012R2 Thick Provisioned Disk VSphere

I have a Server 2012R2 VM running on a VSphere ESXi 5.0.0 (1489271) Host. It has been updated and patched to allow support for 2012R2. Within my VM I have several disks (Thick Provisioned). However, ...
0
votes
1answer
96 views

Which hypervisor to play nice with docker.io

I have been running several different virtualisation servers, (ESXi, XenServer, Proxmox/KVM) in the past. I am now in a position where I need to set up a new virtualisation environment that is ...
1
vote
1answer
58 views

Ubuntu LXC 14.04 Error

I had installed LXC in ubuntu 14.04. I had used an existing template and created a VM by executing the below command. /usr/share/lxc-templates/lxc-ubuntu -p /lxc/vm0 After the installation getting ...
2
votes
1answer
99 views

Method of deploying a VB6 app to a Windows server 2012 RDS server

My environment currently has a Windows 2003 server running terminal services. That server has the visual studio 6 IDE installed. It also is responsible for running a very old ( and poorly built ) VB6 ...
1
vote
1answer
28 views

xen project - bridged interface shows 2 MACs

I have a simple xen project 4.1 setup running on debian wheezy dom0. I have noticed during a network scan that a domU gateway returned 2 mac addresses for the same IP. One MAC being the expected, ...