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

Cannot install third party software on azure windows virtual desktop

I have deployed a standalone cloud-only Azure windows virtual desktop and I can connect to it using remote desktop client app. I have copied the installation file (which is an exe file) of our app to ...
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preventing ipv6 packets from being generated when creating a gre tunnel

I have a veth device, each side of it is in a different network namespace on the same machine. I am creating a gretap tunnel over this veth. when setting the gretap device to up state I can see a lot ...
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Soft quota on GPT partition

I have a GPT partition on Windows server which is shared over the network and works with raid controller. i want it to be extended automatically when reach to it's limit and users are adding files to ...
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Sizing a Server Build [duplicate]

I run an online training business. I am in the process of building out the specs for a server to host 12-16 Windows 10 virtual machines running configuration software for our students. The software ...
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1answer
48 views

How can I configure a server with multiple IP addresses *without* using virtualization?

If I want to set up multiple IPv6 addresses on a web server, can I do this without using virtualization/VMs? How would I do this on modern Linux kernels (5.x) or Windows Server 2016/2019? Relatedly, ...
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How to migrate physical server to VMware VM

Using vSphere Client version 6.7, I need to create a new VM that will replace physical server. I'm not sure where to start, I mean, should I create a new virtual switch? Newtork Interface Card? what ...
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Nested Virtualization on Azure [closed]

I wanted to know , if anyone has tried nested virtualization in Azure. Going by the experience I had in the last few weeks regarding nested virtualization it looks like : VMware is not at all ...
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24 views

Failed to connect socket to 'var/run/libvirt/virtxend-sock': file or directory not found

I want to boot a physical installation of windows 10,so I need to run xen HVM version. Do u have a tutorial that I can follow ? I'm trying to create a new connection inside virt-manager,with xen,on ...
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93 views

Should a unified bare metal application suite outperform multiple VMs on the same hardware?

Assuming one single-socket Xeon D server, 8 cores, 16 threads, two 10G SFP+ interfaces, 64 GB of RAM, two SSDs... An application bundle that includes a nginx, MariaDB, some app logic, and maybe Redis. ...
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AWS Workstations for temporary users [closed]

I would like to setup an array of about 100 workstations with the following requirements: Workstations will run Windows Workstations will be easily deployed from an images Workstations will have no ...
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Google cloud VPC alias range

I have created 2 vms with two Ethernet(nic 0 & nic1) , nic0 is default range and for nic1 i created vpc 192.168.1.0/24 and 192.168.2.0/24 for alias ip . now form vm1 nic1 primary ip is 192.168.1....
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Windows Virtual Desktop Spring 2020 - Internal Server Error

I have a WVD - Windows Virtual Desktop setup using the Spring 2020 update. I have setup a new DC, New domain, New o365, new AD connect. I have setup a session host pool, application group and ...
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pcie SR-IOV driver howto

I am trying to know how linux PCIE NIC SR-IOV work. I am using a Unbuntu with Intel 82599 NIC as a host. Under NIC driver directory(ixgbe) in linux Kernel, there is a file named "ixgbe_sriov.c&...
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Hyper-V Virtual Switch High Network Usage When Idle

Using Windows Server 2019, I have an External Virtual Switch created in Hyper-V Manager with physical Ethernet adapter selected. Problem is that the adapter is constantly showing high network usage ...
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1answer
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How would you (incrementally) backup KVM VMs based on LVM storage?

I'm running a set of KVM hypervisors on LVM storage (unfortunately I can't use QCOW2, because the virtualization platform I'm using is strictly LVM-based). The virtualization platform has a very poor ...
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Docker in unprivileged LXC container freezes host system

I am running docker in an unprivileged LXC container (alpine) on a proxmox host system. The container has nesting enabled. What i discover is that on high memory consumption in the container, the ...
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How hypervisor updates lead to changes in dmidecode?

For licensing purposes our application (running on CentOS) uses the output of dmidecode to generate a system ID. Recently, with more of our customers using the software in virtual machines, we are ...
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1answer
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Hyper-V Server VM stuck at boot and I cannot delete it

I am using Microsoft Hyper-V server with Admin center. Admin center says: VM Status: Paused-Critical Powershell says: VM status : In service. After server restart one of the virtual machines is stuck ...
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66 views

Docker-compose // OCI runtime create failed // pthread_create failed

Recently I have rent a VPS as private playground and for learning docker. I want to host a few webservices behind nginx-proxy together with docker-letsencrypt-nginx-proxy-companion. Setup The Server ...
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Running android image directly on a VPS

I have a VPS server which uses KVM . I can run android using a emulator but I want to run androidx86 directly on the VPS and not through emulation. Is thi possible ?
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1answer
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ubuntu KVM guest with no network connection after configuring network bridge

I am trying to add KVM guest (Ubuntu 18.04) to local network like other real servers in the network. I configured KVM bridge interface in the host system (Ubuntu 18.04) and it works fine with ...
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1answer
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Is it a good idea to use a virtual machine as an external facing code repository server [closed]

I've already asked this question here but it died out with no conclusive answer. Original question: I've set up (installed git/configured certs (disabled password login)/synced repos) a debian box ...
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VLAN trunking on Linux Bridge

Local Lab Design This is the network diagram I am trying to implement. I have 3 VLANs whose description is given in the image and I am using Proxmox to create and configure virtual machines. When I ...
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27 views

Proxmox for enterprise environment

I'm in a process of upgrading existing server infrastructure witch consists of couple of self-built servers running XEN. For management reasons XEN is not ideal, because requires advance console ...
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memory ballooning kvm virt-install maxmemory

Been doing a bit of reading on this and worked out it means the VM starts with --memeory and can hotplug extra memory up to MaxMemory if needed. I.e. use --memory 512,MaxMemory=1536 But reading up ...
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How to find the bottleneck on a virtual server?

I have purchased a cheap virtual server (running with Ubuntu, with 4 virtual? CPUs and guaranteed 8GB RAM, SSD). I started Tomcat8 with my web application (with -Xmx4096m). The startup time is very, ...
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virt-install: error: unrecognized arguments: (but no arguments listed)

Been trying to create my first VM with KVM but getting a cryptic error from virt-install. It's saying I have a 'unrecognized arguments' but does not say which argument: $ sudo virt-install \ >    ...
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libvirt: ERROR Host does not support any virtualization

That's when I run the command 'virt-install' virt-install --connect=qemu:///system --name=mymachine --ram=4096 --vcpus=2 --check-cpu --os-type=ubuntu --vnc --accelerate --disk=/home/myuser/mymachine/...
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Use additional IP in a KVM vps

How can I use an IP in a KVM vps when my provider states "The additional IPs we provide are forwarded. It means they have to be forwarded through the main IP of the server" I have a bridge created on ...
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62 views

Add Network Adapter to VM in vCloud Director using PowerCLI

I am using the PowerCLI version 12 and have a VM which currently has no network adapter. There is the Cmdlet Get-CINetworkAdapter but that returns null (because there is no adapter) And there is Set-...
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Fixing a Network adapter in a VM

I have an old Windows server 2008 r2 that was a bare metal server converted to a vhd using Microsoft's Systernals's disk2vhd utility before the server was sunsetted. Fast forward to today, using ...
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The same IP on physical and virtual interfaces Proxmox

look i have old working Proxmox server which have this network config: auto lo iface lo inet loopback auto enp3s0f0 iface enp3s0f0 inet manual auto vmbr200 iface vmbr200 inet static address ...
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Differential Hyper-V backups with max file limit [closed]

I am looking for a product that can take incremental or differential backups of running VMs on a hyper-v host and importantly can chunk or span the backups across multiple individual files no larger ...
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1answer
89 views

Virtualizor Hetzner IPV6 subnets

I am trying to configure a Virtualizor instance on a Hetzner machine but I can't make it to work since I need to "nat" the IPV6 subnets. I divided my /64 subnet by multiple /80 subnets and I added a ...
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81 views

How to prevent an ESXi VM from syncing the time zone setting from a VMware Horizon client PC

I have some VMs running on ESXi, and users connecting via Horizon. I have a "Global Time Policy" GPO which is working correctly, but when users connect to their VMs via Horizon from another time zone, ...
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1answer
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Disk provison for new vSphere enviroment

I'm deploying a vsphere environment with more than 200 new vm on 20TB datastore and stuck with disk provisioning. Eager zeroed was used before, but for 100 vm it will take a lot of time and i'm ...
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60 views

how many virtual machines (servers) can I run at the same time? [duplicate]

Let's leave the memory issue for a moment, aside. If I have two 64-cores AMD EPYC processors each, how many virtual machines (servers) can I run at the same time? Is that right that I can run 64 VMs ...
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77 views

Running virtualbox vm inside openstack vm

I'm trying to run virtualbox vm (virtualbox 6.1.4, vm iso image is ubuntu 16.04) inside openstack instance for some tests ( openstack is ocata, and instance image is ubuntu 14.04), when i start vm in ...
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1answer
40 views

VirtualBox Ubuntu VM (Windows host) stops resolving names after connecting to VPN on host

I am running a Lubuntu guest VM on my Windows 10 host using VirtualBox (6.0.10r132072). Everything works fine network wise. When I connect to my company VPN, in most cases the VM loses ability to ...
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50 views

iptables port forward not working with libvirtd VM

For some reason, I'm unable to connect to my server inside a VM from the outside world, but I can definitely connect to my server from the hypervisor. The server application runs on ports 27500 and ...
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192 views

Nested VM in XenServer

I am new to XenServer. I am having problems getting nested VM to work in my environment. Here is my scenario: I got XenServer 7.6.0 (Free version) running on a bare metal box (SuperServer 1028R-WC1R)....
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Virtual machine memory space forensics

in spite of the fact that the main point of virtualization is having "containerized" environments for every instanced OS without sharing memory space, are there techniques to make forensics on either ...
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52 views

Virutal Hosting using XAMPP in AWS EC2 INSTANCE

Trying to host 2 or more domains in a single aws ec2 instance. my configuration is: host: 18.219.39.37 [my domain] httpd.conf: Listen 80 <Directory /> AllowOverride none Require ...
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139 views

How can I enable 2D/3D Acceleration with QEMU?

I have a KVM Server running Virtualizor on CentOS 7.6 . When I try to enable 2d/3d acceleration I'm getting the below error message. There was an error while starting the new VPS error: Failed to ...
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39 views

VIP create by user-instance cannot access from same network in Openstack network?

I have this example 2 instance in an Openstack network call VM1 and VM2 Both instance use keepalived to create VIP jump between 2 nodes Keepalived config: global_defs { router_id ...
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18 views

Access deployed self-hosted engine ovirt

I have configured a self-hosted engine following options shown on ovirt UI. Now I do not know how to access this self-hosted engine. This is what I see on the UI. However, I'm not able to type ...
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730 views

QEMU - incorrect real disk size of a virtual drive

df and ls report different sizes on my host machine because of the difference between the allocated size and the amount of space that's actually used in the EXT4 filesystem. The problem is that both ...
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85 views

Setup Virtual Machines with GPU with Intel GVT-g

I'm planning a setup of small office Virtualization that will allow multiple Virtual Machines access to the single GPU. I've learned that this is possible with Intel GVT-g My question is would these ...
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1answer
34 views

Static IP addresses for host and guest VMs on RHEL 7

I have RHEL 7 installed on a development server of ours that hosts two virtual machines, both RHEL 7. I've set up a static IP address for the host that can access our network - I can SSH to the server ...
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1answer
195 views

Windows Virtual Desktop Max Disconnection Time

We created some new virtual desktop pools on azure. Now we want to configure that every session which is disconnected ends immediately. We configured this registry key: Registry Hive: ...

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