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Questions tagged [virtualization]

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 the various layers are inherently tied.

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19 views

Infrastructure - different variants. What are the advantages of the virtualization layer? [on hold]

The infrastructure that I see most often: First infrastructure Can I manage the infrastructure equally effectively using only Container-Optimized OS, management and monitoring tools (e.g. Ansible...),...
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18 views

Is a Hyper-V Container somewhere between a docker container and a virtual machine?

We know that Virtual Machines have a full OS with its own memory management installed with the associated overhead of virtual device drivers. In a virtual machine, valuable resources are emulated for ...
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0answers
12 views

Performance of TensorFlow in a virtual machine on old servers [on hold]

I'd like to enlist some old servers (e.g, G5 HP servers) for TensorFlow distributed computation. They're running Windows 2012 r2 on the bare-metal. I'm thinking about creating a Ubuntu virtual machine ...
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2answers
27 views

Performance of Dedicated vs Virtual Server

I have an application that's running in both dedicated and virtual server environments (all Windows Server 2008 R2). Given nearly identical specifications of the servers (memory, processors), the ...
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0answers
9 views

Im running a vagrant file to bring up a CentOS 6 Virtual Box, but when running vagrant up [on hold]

The following SSH command responded with a non-zero exit status. Vagrant assumes that this means the command failed! /sbin/ifup eth2 2> /dev/null Stdout from the command: Determining IP ...
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0answers
45 views

Esxi implementation and vm creation

I have Dell T440 with 2x2tb sas drives and 4x4tb sas drive initially. I will have 2-3 vms later on. But what could be better design to implement esxi 6.7 on this situation? At the same time, the ...
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0answers
34 views

Can I have Type 1 Hypervisor installed in my Laptop, that let me works of Guest Machine on same Machine like a Type 2 hypervisor? [closed]

I want to install a hypervisor on bare metal of my laptop. And the install multiple Guest Operating System on it. And when I boot, I can run multiple Guest OS simultaneously, can use each one of them ...
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1answer
21 views

Cant find much documentation regarding over committing of memory for VM's on a KVM host [duplicate]

Most operating systems do not use 100% of the available RAM all the time, having said that I am unable to find an approximation for this over provisioning. CPU cores is not a constraint for me, I ...
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76 views

Convert Windows 7 system to Qemu with virt-p2v, booting broken

I have a Windows 7 system running on an AMD laptop that I would like to convert to a VM in Qemu under Linux. On booting into Windows, the image produces a BSOD with the standard 0x7B error. I ...
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1answer
46 views

Access Localhost (Ubuntu -VM) from Windows

I use Ubuntu in my virtual machine and start from there my code projects. These project when active can be run under localhost:3000. Now when i execute in Ubuntu ifconfig I get following result: If ...
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1answer
62 views

Got 3 HP Proliant DL365 G1 for really, really cheap. Can I run Hyper-v or ESXI? [closed]

Title. I got them for really cheap, including the rack, and I was thinking of setting them to virtualize stuff for home use and for some labs. First I tried to install Windows Server 2019 (I have ...
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1answer
116 views

How to achieve Host-and-Internet-Only networking within a Debian host and Windows Server guest using KVM/QEMU?

I have a physical/dedicated server which is running Debian 9 (Stretch). The server has enough resources to support its own load and the load of some virtual machines (in this question: Windows Server ...
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0answers
20 views

Hyper-V server 2019 looses connectivity after creating first virtual switch

I have multiple win srv 2019 with HV role. Two nics in a team (switch independant and dynamic) When installing the role of HV it ask to create a the first vswitch. I choose the my nic team ...
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0answers
26 views

AXIS Virtual Camera playback recording input type

AXIS Virtual Camera 3.05.001 I choose "Add > Blank default > (right) camer properties > Basic Settings > Playback > Add > Select Recording" but I do not know the allowed input type. mp4, webm, mjpeg ...
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1answer
24 views

Optimze GPU performance of virtual server

In our company, we have used VMware server virtualization in order to divide a physical server into multiple unique and isolated virtual servers. One of those virtual servers (OS: Windows Server 2016) ...
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0answers
33 views

Will nested virtualised machine be avilable for all the users of a windows server

I want to create a Windows Server VM in Azure Cloud and enable nested virtualization and then install another operating system in it. After that I want to create multiple user accounts on that server....
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1answer
87 views

Getting errors when try to start Debian XEN HVM VM with more than 4 vif's

I've been trying to set up a PfSense firewall on my Debian XEN server for some time now, this works fine until I try to add a fifth (with four it works) interface to the "hvm" VM, then the VM won't ...
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0answers
45 views

Implementing Segment Routing Traffic Engineering (SR-TE) in IOS XR 6.3.1

I'm trying to deploy SR-TE on XRv9000 routers IOS XR 6.3.1 version which are deployed in AWS according to the topology below. I have accomplished the configuration of SR on all routers which is ...
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0answers
36 views

Packer errors with qemu-system-aarch64

I have some success creating Vagrant base boxes with Packer for x86 and x86_64 guests, including VirtualBox, VMware, and qemu hypervisors. Now, I want to start making ARM guests with Packer and qemu, ...
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1answer
35 views

KVM bridge networking: First ARP packet gets answered by wrong host

I have a host (192.168.1.106) Linux server with KVM and one Linux server as virtualized guest (192.168.1.105). The guest uses a network bridge and both host and guest are reachable over the same ...
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1answer
71 views

Enagble Supermicro Virtualization in Bios

my motherboard is a Supermicro x9dri-ln4f+, and I am using dual xeon e5 2690 CPUs. I have been trying to enable Virtualization in order to load VMs in qemu and virtualbox. The motherboard claims to ...
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0answers
11 views

Azure P2S VPN - Require password for connection

I followed these general directions for setting up a P2S VPN gateway in Azure and now I am able to connect to my Azure VNet using VPN. However, I would like the ability to add a password to the ...
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0answers
41 views

Cloning LVM raw volume

I have to clone and manage some LVM RAW volumes that were created without making filesystem ext4. So I tried to mount this volume and linux didn't find any filesystem to mount. Inside this volumes I ...
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0answers
73 views

KVM machines crashing in proxmox

I'm have a domestic proxmox installation which was running fine for a month or two. Recently, I started to have issues with two of the Debian-based virtual machines: the one that I use as router and ...
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0answers
52 views

Windows Server Hyper-V Core 2019 - Host Hogging 100% RAM

I have a server which has Windows Server Data Centre 2019 installed as a core. It is running the Hyper-V role with containers and this is all it does. Now I have 10 VMs with a combined RAM allocation ...
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1answer
38 views

Linux disk expansion error:You must delete some partition and add an extended partition first

I researched the reasons for this error, Can't do more than 4 parts There must be a way to increase disk space disk I want to increase the system virtual linux centos 6 I'm connecting with ssh-putty ...
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1answer
46 views

Howto move “BIOS boot” to another disk in a VM

(how) Is it possible to move a linux system to another disk in a virtual machine? For a client I have to support a VMware ESXi virtual machine that has been set up somewhat clumsily: the whole virtual ...
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1answer
35 views

New virtual data centre design considerations

The situation is like this. The customer has 2 physical servers running 1 ESXi each, running virtual DHCP and DNS windows server on both ESXi as redundancy,he wants to add a 3rd server, and have vCSA ...
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0answers
31 views

Hyper-V - VMs - Migration to native 4k VHDx

I recently switched my hardware to native 4K disks, which means that all virtual machines are now using the hyper-v software emulated 512e hard disk mode, which affects my disk performance. Does ...
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1answer
40 views

Block port 25 for a Kvm VM on server

I need to know how to block port 25 for a VM on a KVM server using ebtables or firewalld service . VM has interface name viifv3035 on the server and brctl shows this: # brctl show bridge name ...
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1answer
32 views

Simple Hypervisor for one OS from boot

I would like to run a hypervisor that will let me install a VM on it where the end result would be such as that when these workstations will be turned on the following will happen: Hypervisor boots ...
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1answer
26 views

What parameters of guest OS can be controlled with hypervisor? [closed]

I know that some hypervisors allow you to control the amount of available RAM and disk size of guest OS. What another parameters of guest OS can be controlled with hypervisor? (I'm asking about type ...
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2answers
449 views

Afer upgrading qemu, “unsupported machine type 'pc-i440fx-3.1”

I recently installed the latest version (3.1.0) of QEMU, and I have been having trouble getting virt-manager to work correctly, presumably because it isn't connected to the right dependencies. Some of ...
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1answer
87 views

Poor man's virtual GPU, using a multiuser OS + GPU, instead of specialist vGPU card?

I've read about this system in a white paper somewhere, but can't remember where, or any details, and haven't found it since. The comment was in regard to GPU virtualisation with Type 1 (bare metal) ...
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0answers
13 views

Hyper-V mount permission issue

So, I have set up Ubuntu18.04 server with Hyper-V and I want to use it for development. I installed apache, all was looking good, I mounted my project from Windows(using SMB and mount -t cifs), but, ...
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1answer
105 views

Assign External/Public IPs to VMs in OpenNebula (Open vSwitch)

I've read multiple posts asking the same question, on KVM and open nebula forums and in general virtualization ones but have only found partial or bogus answers. Some Info: Objective: Be able to ...
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2answers
40 views

Identical Processor - Live Migration Error

I have production problem thats why Im asking for fast help :/ Environment 2 new HyperV Host with Windows 2016 in Failover Cluster Both with CPU: Intel® Xeon® Silver 4116 Processor 2.10 Ghz Live ...
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0answers
35 views

How do you make use of VT-d features other than PCI passthrough?

I did some research and from what I can tell the main feature that VT-d provides is PCI passthrough. https://en.wikipedia.org/wiki/X86_virtualization#Graphics_Virtualization_Technology_(Intel_GVT-d,...
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0answers
42 views

Running a Router Computer Software (i.e. pfSense) on a VM in the Server to Monitor Traffic

It's kind of hard to explain what the title means. I'll explain it. So basically, I have a Server (Dell T710) on our Computer Laboratory in the school, which is running Windows Server 2012. It has 4 ...
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0answers
35 views

Can I make a single computer out of 3 with lxd cluster?

I'm setting up a LXD cluster on 3 machines. Though I'm concerned if a single container (a virtual machine) use all the resources of 3 machine. I mean Does a single container use all 3 machine's CPU?...
3
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0answers
45 views

Hypervisor support for vGPU + VM suspend?

Short version - how well do current hypervisors support vGPU with VM suspend/resume capability? Longer version: I've used VMware Workstation for many years in my home lab, with the GPU (used for ...
2
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1answer
153 views

should multiple threads be spun up by kvm/virtio-scsi on the host during IO workload

I am trying to pass-through a scsi lun to guest for best performance. What I am seeing on the host is that with iodepth=64 - 64 threads of qemu process are spun up for the VM. I believe this causes an ...
2
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1answer
77 views

Is lxd/lxc a suitable replacement to virtual machines (vSphere, for example) for server infrastructure? [closed]

I would like to move my servers to virtual machines. This is because it'll make it easier for me to fire up more machines and back them up in case the physical server is damaged (I'm not aware of ...
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1answer
32 views

Virtualize linux SD-card to xencenter

I have an SD card which contains the root of a physical linux machine. I would like to make a virtual server out of this SD. Preferably without having to run this SD card on a physical linux machine ...
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0answers
146 views

ESXi vmware tools recognises CentOS 7 as CentOS 6

I am using vmware Remote Console (VMRC) to access a virtual machine running CentOS 7 with the included open-vm-tools 10309 which are recognised by the ESXi-host. I am able to shutdown or restart the ...
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1answer
55 views

Distribute Virtual machine supporting multi platform of visualization

I would like to create a virtual machine for distribution, My question is - how can I support all the major virtualization platforms? (VmWare, VirtualBox & HyperV) Is there an easy way to ...
3
votes
1answer
262 views

vmware ESXi keyboard layout in webconsole screwed up

I'm using vmware ESXI 6.7 (also known as vSphere Hypervisor) on a 64-bit Dual Socket server (2x Xeon X5672, 16 GB RAM). I've got two guests running on it, both CentOS 7 machines (64-bit). Problems ...
1
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1answer
48 views

New server to setup, docker or VM? [closed]

I'm a developer and I have some doubts about server configuration. We have a new server with a dual Xeon CPU, 128 GB RAM & 4 TB SAS SSD. We have to run some web application. Rails App ( NGINX, ...
1
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2answers
54 views

Hyper V Virtual Swtich Configurations for single physical network adpater

How does HyperV Virtual Machine > Virtual Switches work? I am installing a Hyper V on Win Server 2012 R2 and it is asking me to select the Network adapter for Virtual Switch. I have only one physical ...
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2answers
149 views

Upgrade windows server HDD without losing any data in RAID1

I have a Windows Server 2012 R2 installed on a system with RAID1 setup which has several services running like Active Directory, etc.. It has 500 GB hard disk as of now. Now we want to upgrade the ...