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Questions tagged [kvm]

Questions about the Kernel-based Virtual Machine, an open source virtualization infrastructure to use the Linux kernel as a hypervisor.

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Suddenly none of my services are starting on bootup

I can't connect to my server using ssh, so I'm using OVH'S KVM. root@vps556019:~# nmap -p 22 127.0.0.1 Starting Nmap 7.01 ( https://nmap.org ) at 2018-10-14 18:09 CEST Nmap scan report for localhost ...
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Problems creating KVM vm in Ubuntu 18.10 [on hold]

I'm trying to create a vm in kvm through virt-install. I inputted the following commands: sudo virt-install / --name clipos / --memory 2296 / --disk=/home/mic/ubuntu-18.04.1-live-server-amd64.iso,...
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8 views

Windows server as a Desktop enviroment for Ubuntu server

i have set up and ubuntu 16.04.5 server. and i have managed to install windows server 2012 r2 on top of it via KVM. Autostart is also enabled. for convenience i did the configuration via the unity ...
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Nested virtualization with KVM is not working in Ubuntu16.04

[If there is a more suitable place to ask this question, let me know !] 1 What am I trying to do ? I want to use libvirt KVM with nested virtualization like described in [1] and [2]. But it does not ...
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1answer
17 views

Emulate NUMA machine with virt-manager

I need to develop a C program which uses libnuma library. But I don't have a NUMA machine at home, and the function numa_avaiable() returns 0. I would like to emulate a NUMA machine. So, I have ...
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1answer
54 views

Ubuntu desktop as a cloud service?

I'm new to linux and to servers. I set up ubuntu 18.04 server on an old macbook to play with. I set up a website on it and then I decided to start again... on a real server. This time I want to ...
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26 views

KVM server upgrade

Firstly I am not an Ubuntu expert and therfore not a KVM wiz either. I have inherited a standalone physical server that is running Ubuntu 16.10 (EOL) that runs KVM with a few Virtual machines running ...
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libguestfs virt-customize install is not working - Ubuntu 18.04

I was trying to use virt-customize to install a package in a disk image before attaching the disk to a VM. $ virt-customize --hostname atotest --uninstall cloud-init --install ifupdown --network -a ...
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136 views

upgrade of ubuntu server fails on hooks/kmod

I got a HP proliant server in a rack (second hand) 16 cores, 2x 1Tb HD and had happily installed ubuntu 16.04 server, used KVM to set up a few VM's running a kubernetes cluster. Also installed ...
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1answer
42 views

virsh shows VM running, but it either doesn't start, or has no network access

I am having a HECK of a time getting virtual machines running on 18.04 (server) LTS. I say running, because it FEELS like virsh REPORTS it running, but that it never starts up. This is a very basic ...
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1answer
31 views

Unable to ping from host to guest in KVM

I have a Windows guest setup using KVM on an Ubuntu host. The problem is that I am able to connect to the internet and ping the host from the guest, but can't seem to ping the guest from the host or ...
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1answer
98 views

Virtual Machine best practices, and RAW vs QCOW2 [closed]

Tl/Dr: rebuilding VMs after OS SSD crash. Looking for best practice tips to see if I am missing anything, and to confirm if RAW vs QCOW2 has performance differences, and if they can be set up with the ...
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28 views

SRIOV + ubuntu bonding in KVM

I have a KVM with Intel SRIOV card. 5: enp4s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 00:0c:bd:05:d9:82 brd ff:ff:ff:...
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38 views

Docker breaks network bridging to virtual machines

After installing docker I can no longer access my VMs running on my Linux machine. The VMs are up and running but other hosts can no longer access them at all. Has anybody already encountered this ...
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qemu windows guest with access to host samba share but blocking external network access?

I am running my qemu virtual windows machine with the command: qemu-system-x86_64 -enable-kvm -m 2048 -boot d disk.qcow2 -net user,smb=/share/ -net nic,model=rtl8139 -localtime -vga std which ...
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1answer
43 views

Traceback error virt-manager : 'module' object has no attribute 'SSL_ST_INIT'

I'm not able to run virt-manager or virt-install on Ubuntu 16.04. Every time I try it a python error occur : ➜ / $ virt-manager Traceback (most recent call last): File "/usr/...
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2answers
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/dev/kvm/ does not exist in ubuntu 16.04

I have installed kvm in ubuntu16.04 OS. WHen I am executing following command: kvm-ok I am getting following error: INFO: /dev/kvm does not exist HINT: sudo modprobe kvm_intel INFO: Your CPU ...
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1answer
271 views

KVM Setting Issue (libvirt-sock not found) on Ubuntu 18.04.1 LTS

I have been following this link https://help.ubuntu.com/community/KVM/Installation to install KVM on Ubuntu 18.04.1 LTS. But I cannot start it properly and encounter the following errors. $ virsh ...
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Package 'bridge-utils' has no installation candidate [duplicate]

I am trying to install KVM in ubuntu 16.04 using following command: sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils and getting following error: Reading package lists... ...
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2answers
224 views

Why doesn't “osinfo-query os” detect Ubuntu 18.04?

OS: Kubuntu 18.04.1 (and Ubuntu 18.04.1 in a virtual machine) When I run osinfo-query os after installing libosinfo-bin, the output doesn't include Ubuntu 18.04: $ osinfo-query os | grep -i ubuntu | ...
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Unable to bridge network to qemu (libvirt) guest

I am running a virtual machine with virt-manager on my Ubuntu 16.04 server and am trying to get the guest into the same network as the host. I have attempted to follow these directions however I ...
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30 views

Configure Netplan for Apache CloudStack

I am following this tutorial on setting up CloudStack on Ubuntu 18.04 LTS: https://rohityadav.cloud/blog/cloudstack-kvm/ there it says to configure your network like so: network: version: 2 ...
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1answer
50 views

Fails to boot Kernels newer than 4.15: LSB: QEMU KVM module loading script

I currently cannot boot any kernels newer than 4.15 because my PC hangs on boot with the following message: https://i.imgur.com/G45PiAO.jpg If I purge QEMU per the instructions found here: Ubuntu 16....
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2answers
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Creating an KVM Virtual Network

I'm new to Ubuntu and I'm a bit confused. I wanted to create a virtual network for one of my virtual machines, so I opened virt-manager and went to edit -> Connection Detail and stopped the default ...
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Defining network interfaces on Ubuntu KVM Kickstart files

I already asked this question on Server Fault but I haven’t gotten any traction. I hope moving it here is not wrong? How does one define static network interfaces in a kickstart file, for Ubuntu KVM ...
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261 views

How to reset netplan to default in 18.04?

I tried creating a network bridge through Virtual Machine Manager for KVM. Now my Ubuntu network connection depends on my Windows KVM being booted. Since creating this bridge when Ubuntu is booted ...
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39 views

Virtualbox guest os from raw windows 10 drive

system windows 10 and Ubuntu 18.04 dual boot. Can I use a bootable windows 10 drive as qemu/kvm guest and not give up the ability to dual boot?
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1answer
61 views

Cannot execute Virsh command through SSH on Ubuntu 18.04

I am using Ubuntu 18.04 for KVM host. On a jumphost, I tried to execute virsh command: ssh user@ip "virsh dominfo vm1" I got an error: failed to get domain 'vm1' But this command worked well on ...
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1answer
22 views

KVM Network Bridge with Static IP getting a second ip via DHCP

I did everything as in this answer, I can connect with to the VM via the static IP but I still get an IP from the DHCP server instead of the static one on the interface, how is it possible? How do I ...
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1answer
51 views

Passthrough of Radeon 5450 to windows cannot allocate resources

I try to passthrough a Radeon 5450 GPU to a Win 7 guest from a Ubuntu 18.04 hots. I'm using machine type q35 when creating the VM with virt-manager because I read that it should be better for ...
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79 views

KVM NAT Port-Forwarding

i have Ubuntu 18.04 with KVM and a Debian VM. The Debian VM should accept the port 8834 from outside. Can anyone explain me how it should works? Thanks
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105 views

Nested Virtualization - ESXi 6.0u3 on KVM - Windows VM on ESXi hangs upon starting server manager

Host - Intel(R) Xeon(R) CPU E5-2630 v4 OS - Ubuntu 16.04.5 with HWE 4.15.0-29-generic. Qemu 2.5.0 Deploy ESXi 6.0u3 VM on KVM ESXi config - hv.assumeEnabled = "TRUE" vmx.allowNested = "TRUE" ...
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1answer
81 views

HTTP port unreachable on KVM guest after upgrade/reboot to KVM host

Problem statement: gitlab VM isn’t reachable via HTTP after upgrade/reboot to KVM host. Topology: Topology Troubleshooting notes: The gitlab VM is reachable via SSH from all hosts in the topology. ...
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1answer
124 views

Anybody managed to run Linux and KVM Windows with a single passthrough graphics card?

I have a Ubuntu system that runs FreeNAS in a KVM with one SATA controller card as passthrough. Because of that I only have one PCIe slot on my motherboard that fits a graphic card. I would now like ...
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152 views

Windows guest's audio choppy in QEMU/KVM with virt-manager

I'm using QEMU with KVM in virt-manager, with a Windows 10 guest. I've noticed the audio to be very choppy, and will cut in and out constantly. After installing most of the virtio drivers for Windows, ...
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1answer
45 views

Accessing Ubuntu via Remote Desktop

More specifically the way it looks via Remote Desktop. I've tinkered with Ubuntu for a long time, but wanted to try something new. I have a Scale HC3 cluster (KVM/qemu) and have Ubuntu installed in ...
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69 views

MAAS - Machine status “failed commissioning”

I have installed KVM and MAAS and I want deploy a machine but continue to get the status Failed commissioning. I think the problem is the subnet configuration but I don't fine a clear error into log, ...
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monitor isn't working

At startup external monitor is blank, and laptop screen need to be used. After singning in, the lid can be closed. I decided using gnome tweaks to solve this problem. Now gnome shell extension is ...
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1answer
434 views

Android Studio not recognising KVM on Ubuntu 18.04

KVM is required to run this AVD. /dev/kvm device: permission denied. Grant current user access to /dev/kvm
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45 views

Virtmanager can't connect to libvirt

I was working with KVM and I had 6 VMs installed on NetFS. The virtmanager suddenly gives an error which I did not exactly read(but I talked about timeouts and connecting) and then it disconnected. I ...
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1answer
55 views

Pass-through of Marvell 88SE9230 to Xen guest with AMD-V iommu

I have a Gigabyte GA-970A-DS3P board with a AMD FX(tm)-8350 cpu. I have IOMMU enabled in the BIOS. For the non-XEN linux boot I pass iommu=pt amd_iommu_dump as a kernel argument and can verify that ...
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44 views

How can I make Gnome pass the super key to desktop viewers?

TLDR: Gnome always eats the Super key. How can I make it stop for certain applications? Long version: I'm running 18.04, but this has been an issue for about five years, and I'm sufficiently fed up ...
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12 views

Creating bridge on Ethernet to USB device while having internet connection

I want to create bridge on ubuntu 16.04 for KVM guests. I can see in many posts how to bridge to an ethernet port. When I create a bridge (in /etc/network/interfaces) and set it up, the bridge is ...
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Issue with ubuntu 16.04 on proxmox vm

I am trying to update before configuring the vm but ubuntu 16.04 vm on proxmox
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Created network bridge in KVM and now I have no internet if my VM isnt running?

Ok guys im not sure what went wrong here, but Ill start at the beginning. I created a Windows 10 VM through Virtual Machine Manager, I needed the Win10 VM on my main network, so I created a bridge ...
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installing ubuntu core on kvm problem whith ssh

I tried to install ubuntu core on kvm but after installation in ubuntu core i have no user that i can insert commands enter image description here and when i want to ssh it shows this. enter image ...
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Apps fail to launch even when clicked on [duplicate]

Multiple apps fail to launch from Ubuntu 17.10. When I click on some of the apps they do not launch. i tried doing sudo apt install unity unity --reset-icons when i open a application for example ...
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0answers
58 views

Command virsh blockcommit in script shell

I'm facing a weird issue... I'm trying to create a shell script to live backup Vms on KVM. To perform this, I need a step with a blockcommit to merge the snapshot created with the base disk. All ...
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1answer
191 views

Ubuntu 16.04 installation hangs due to intel_rapl

I was trying to make a preseeded ubuntu-16.04-server-amd64 install on my KVM. Though the standard server iso install worked perfectly fine but, after preseeding, the vm hangs on the first boot due to: ...
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120 views

Error: No candidate version found for kvm

I'm following this tutorial to install KVM on my machine to make Android Emulators run faster, I have Ubuntu 18.04 LTS installed on my machine. I have done all the steps correctly until this one: ...