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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 ...

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12 views

ESXi management freezes [on hold]

I've been running an environment at home running ESXi 6.7 for some of my school projects and to learn more about virtualization. Currently, there is a Plex VM and a webserver VM. The host specs are: ...
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2answers
51 views

How many VMs can I install on Windows Server 2016 standard?

With 1 Windows Server 2016 Standard (WS2016s) license (running Hyper-V) installed as host on a physical machine, how many VMs can I install on that machine? Is there a limit? Could I install 10 ...
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0answers
8 views

libvirt virsh attach-interface error

I have a VM nsyedVM1 and I have created a network in bridge mode whose configuration file is displayed in the image. When I use net-list it is getting displayed, but using brctl, I am not able to find ...
2
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2answers
42 views

Are other services (like MSSQL) next HyperV on the host system a normal approach?

First of all, I'm not very experienced with HyperV, Microsoft stuff and this could be an opinionated question. Nevertheless I wonder since I've learned about the following situation, if it's really ...
1
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1answer
30 views

Google Cloud - Monitor running on Microsoft Display Driver instead of NVIDIA K80 GPU

My Google Cloud Instance is running on Microsoft Display Driver,instead of the GPU.I tried to install Hyper-V,but Google Cloud Processors don't support it.Please help,i need to run Unity,but can't ...
1
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1answer
33 views

LVM or not for KVM storage?

Is there any issue with using LVM for your host server's storage pools or raw devices that are used by KVM guest? Eg. say I want to add storage to the /home directory on my KVM guest. I have a Volume ...
5
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1answer
87 views

backup/restore ec2 instance before o.s. update

I have an EC2 instance with an EBS backed root volume. The OS hasn't been updated in some time and I'd like to remedy that, but I need a rollback plan in case the updates cause issues. I think I ...
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0answers
25 views

Hardware for virtualization [duplicate]

I need to choose appropriate hardware for virtualize with vmware - 1 windows server 2016 (active directory, wsus, centralized antivirus software...) - 1 windows server 2008 (run 2 server software) - 1 ...
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0answers
46 views

How secure is qubes os? [on hold]

How secure is qubes os? Lets say i have bought dedicated bare metal (NOT VPS) server in some country. Installed qubes os, LUKS encrypt disk and run some PROCESS in security qube. Now, lets say ...
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1answer
45 views

What is hypervisor? examples for type1 and type2 [closed]

What is hypervisor, and what are the differences between type1 and type2? Examples for type1 and type2 ? Most questions out there are about the difference between type1 and type2, and the definitions ...
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2answers
53 views

Lightweight way to graphically connect to guest VMs on “headless” hypervisor

Running a Fedora Server 28 hypervisor (QEMU/KVM with libvirt tools) with Windows- and Fedora-based guest VMs. Normally, the hypervisor runs headless with minimal packages installed, and guest VMs are ...
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0answers
42 views

On VirtualBox, is there a way to set 'Reinitialize MAC address' as default?

When cloning a VirtualBox instance, is there a way to set the "Reinitialize the MAC address of all network cards" as the default? Humans sometimes forget to tick this box, with the resulting horror ...
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1answer
40 views

SSH into Xen Virtual Machine connection refused

While practicing for SysAdmin certification, I spun up a virtual machine. I could not SSH into it from my laptop on my LAN. I could SSH into the VM from within the host OS. After some reading and ...
4
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3answers
235 views

What's so great about App-V? [closed]

App-V is one of those technologies that has a small but extremely enthusiastic fan base. And thinking it might be useful at my company, I decided to give it a try. After doing a 2-week deep dive ...
0
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1answer
55 views

System load on OpenVZ hardware node - is it reliable?

I discovered something that surprised me. On OpenVZ hardware node there is a big load, let's say the load is 210 (it have many CPU cores available but 210 is still high as for this server). But the ...
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0answers
3 views

are there any way to remount group folder from virtualbox?

I would like to know if there are any way to remount my group folder from VirtualBox VMs folder with its configuration as before? I had to format my / partition , and I Have my vms on my home folder , ...
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0answers
31 views

Bridge networking in ubuntu guest on freebsd host using vm-bhyve

i'm a little less learned on bridging thus need help in guest networking. I've setup 2 ubuntu guest on a freebsd vm-bhyve. created a single switch public which has 2 tap insterfaces namely tap0 and ...
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2answers
73 views

Error in enbling SR-IOV with Ubuntu 18.04 on Intel ixgbe - Intel X550 - Dell R640

I'm having issues on creating VF with ubuntu 18.04. SR-IOV is enabled from BIOS, the NIC are Intel X550, I added intel_iommu=on to /etc/default/grub and also tried using modprobe.d by adding options ...
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2answers
32 views

Shared OS VM vs. environment sandboxing?

If I need N virtual machines running the same OS, this simply means I need to install these N machines and then also have to take care of their updates etc etc... Is it possible to have only one ...
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0answers
11 views

serial0 failure when building ubuntu VM on esxi host

I am using packer to build an virtual machine on ESXI 6 host. At some point the process halts and I can see several repetitions of the following message: 2018-09-13T12:48:53.747Z| vcpu-2| I120: ...
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0answers
14 views

amd_iommu=force_isolation.what does it mean?

When I use iommu to passthrough sriov device,I find all VFs and PF are in a same iommu group. Can I use “amd_iommu=force_isolation”? Does it mean every device will have a single IOMMU Group? Does it ...
1
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1answer
37 views

Running VMWare Workstation 14 on a VM [closed]

I have set up VMWare Workstation on a esxi 6.0 hosted VM. (Ubuntu 16.04.05) I am trying to run some packer builds that use the specific (VMWare Workstation) hypervisor. The builds get stuck ...
1
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4answers
100 views

Do not show all docker containers to a particular user

I want to use one server to host multiple docker-containers. I want to give another user a possibility to manage new docker-containers, but I do not want to give him access to all other containers, ...
2
votes
1answer
126 views

ESXi Passthrough hard drive to use ZFS on VM

I have ESXI 6.7 installed on my r710. I have 1 2TB drive that's being used as the boot drive for ESXi and the VMs. I have 3 4TB drives that will be large storage. I want to send the 4TB disks ...
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0answers
37 views

Bridging Wireless interface on Linux

Someone told they actually bridged a wifi interface on Linux, others says this is not possible. I would like to bridge a virtual-machine (kvm+qemu) interface to the host wifi network, is this ...
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2answers
43 views

Is there any performance benefit to Bond Virtual Adapters?

I am using XenServer and wondering if there are any performance benefits to bonding two "virtual" network adapters on a virtual machine? I am certain it would benefit a bare metal server (make one ...
1
vote
1answer
312 views

Failed to get an SSL thumbprint of the target server certificate, when trying to install vCenter 6.5

I am trying to install vCenter 6.5 on windows as a standalone server and I am getting that error message. Does vCenter 6.5 need to be deployed as a VM on an ESXi host? If it can be installed on a ...
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votes
1answer
92 views

How to set up pfSense/OPNSense on virtual host?

I'm a little confused as how to to host a *Sense box as a VM and have it provide routing for the host. Internet -> Modem/Router (bridge mode) -> en1 on Dell r710 -> OPNSense in a VM Then ...
0
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0answers
29 views

How to enable swap in OpenVZ container?

The problem Recently I decided to rent a $1.00/month VPS. I knew there was going to be a catch for the price and the specs and I think I've found it... I cannot create swap files as they VPS provider ...
0
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0answers
43 views

Vagrant ubuntu box configure keyboard layout

I am deploying a vagrant ubuntu 18.04 box, using the default bionic64 box. Installing the gui with these deb packages, via apt install: gnome language-pack-de language-pack-gnome-de even setting ...
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0answers
24 views

Is it possible to allow users to change resolution after logon?

I'm a system admin with a system running on some VMs that were setup with VMware vSphere (I don't manage vSphere). I need for my users to be able to remote in to the VMs and change the screen ...
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0answers
35 views

2nd VMDK disk never appears in linux when deploying via ova

I started with a qcow2 CentOS image that I converted to disk1-vmdk1. The qcow2 downloaded from CentOS website already had Linux on it. Now when I try to add a new disk, it never appears when the VM ...
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0answers
55 views

How to isolate IOMMU device for PCI passthrough?

One Ubuntu 18.04 host system has below IOMMU groups and devices. $ for a in /sys/kernel/iommu_groups/*; do find $a -type l; done | sort --version-sort /sys/kernel/iommu_groups/0/devices/0000:00:00.0 /...
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0answers
35 views

How to implement redundancy with VM Ware + connecting remote office?

We have a company with 20 workstations in NY and 6 in a remote location in Europe. The server in NY is the domain controller, NVR for the security cameras, file server and stores profiles and user ...
3
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0answers
74 views

Erase GPU memory

We have Nvidia GPU cards that can be used by different users in an OpenStack environment. A first user creates a VM with access to a GPU card, then deletes the VM when done. Another user then creates ...
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2answers
148 views

Hypervisor type of Hyper-V on Windows 10 vs Hyper-V on Windows Server

Hyper-V on Windows 10 differs from Hyper-V on Windows Server in features and memory management, as stated in Microsoft docs for Hyper-V: There are some features that work differently in Hyper-V on ...
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1answer
76 views

KVM and restoring VM without the XML files [closed]

I have recently experienced a server outage that was hosting a couple VM's. This server is irreparable. I have since installed a new server with Centos 7 and installed KVM. I was able to connect and ...
2
votes
1answer
38 views

Is there a command to scan an existing XenServer storage repository for VMs?

Question: Is it possible to scan for and then re-import XenServer virtual machines from an old storage repository disk after connecting it to a new install? Background: A client had a XenServer 7.3 ...
2
votes
1answer
114 views

Find why a disk is at 100% utilization in linux

I have a virtual machine running an application. After some time, its load starts increasing and the machine becomes unresponsive to commands. After monitoring the disks usage, I found out a mounted ...
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0answers
44 views

Vm connect to everywhere but the host

I have the following issue. Vms in virsh net2 are fine. Vms in net1 connect everywhere but the host. They can ping and connect to each other including vms in net1. Vms in net2 can only connect to ...
0
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1answer
193 views

Get Latest OS Variant dictionary definitions for KVM

I have a Debian 9.4 host running KVM. I need to deploy a Windows Server 2016 guest. However, the current osinfo definitions only cover up to Windows Server 2012 R2. I am aware that the definitions ...
3
votes
6answers
2k views

How do I set a password on an Ubuntu cloud image?

I'm trying to start on .ova with VirtualBox and want to import the same image later in vSphere. Ubuntu cloud images don't have a standard password anymore. I'd like to edit the .ova to configure a ...
0
votes
0answers
28 views

Cant connect to vms

I am unable to ping or connect to vms using virbr1. It works fine for the ones using virbr2. I am able to connect to vms in virbr1 using the internal ips (192.168.100.x) , but they dont respond to ...
-1
votes
1answer
46 views

migration HP-UX to Hyper-V [closed]

I would like to ask about possibility to migrate phisically server (HP RP3440) with installed HP-UX v11.1 to Hyper-V/VirtualBox/VMware. Thanks for Your effort to explain me how to do it.
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2answers
1k views

Server 2016 Running Hyper-V Stuck in “Shutting down service: Hyper-V Virtual Machine Management”

I recently did some updates to a Server 2016 box which acts as a Hyper-V Hypervisor. After performing the updates the server was hanging at "Shutting down service: Hyper-V Virtual Machine Management". ...
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2answers
47 views

Xenserver 6.5 Passtrough from HASP [USB] to Windows Server 8 SP2

Due to an accidental update on VM with Windows Server 2008 SP2, the HASP USB key is no longer recognised. The key works on my laptop, so it looks fine. I have a pool of VMs built on XenServer 6.5. The ...
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0answers
100 views

max speed for virtio?

if i set up VIRTIO as a model type for a physical interface(supports max speed of 100Gb/s) ; Here how much max banwidth can i achieved, is it only up to 10Gb/s?? When i try to setup back to back ...
0
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1answer
237 views

VMWare Converter standalone gives a “cannot find source file” error at 98% when reconfiguring the destination virtual machine

I'm trying to convert a recently updated physical Debian to a virtual machine, but the process halts at 98% giving me an error that I'll include at the end of the post. From the error I deduced that ...
0
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0answers
41 views

Openstack Mitaka: Unable to Boot VM Instance - OSUtils Error

I installed Openstack Mitaka on a fresh Ubuntu 14.04 Trusty system. Trying to get an all-in-one cluster up and running. Everything seems to be up and running from the outside. I tried booting a ...
2
votes
2answers
37 views

Creating a virtual drive in windows server that ,maps to a CentOS server folder in same network

Is it possible to creating a virtual drive (E.g. drive D) in windows server that ,maps to a CentOS (linux based) server folder in same network? Thanks in advance