Questions tagged [kvm-virtualization]

KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream.

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How to set up VirtualBox Guest as Server on Different Subnets? [closed]

First, my server only has two public IP addresses. eth1 188.138.124.244 netmask 255.255.255.192 eth1:0 85.25.110.198 netmask 255.255.255.192 default gateway: 188.138.124.193 How can I set up ...
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How to decide between Xen or KVM? [closed]

I am going to set up a high availability hosting server (load balancer, mysql, apache, php, memcached, apc, possibly a distributed/network file system of some kind) with two nodes. I want to isolate ...
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How to find out Hosting KVM Server IP address from Virtual Machine

I have got large number of virtual machines running on 3 KVM servers.I would like to identify the host's server IP address/hostname from a guest machine.
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virtualization platform: Ubuntu + KVM/Xen

performance and feature set offered by the latest Ubuntu 11.04? while it works best as virtual workstation with direct attached storage, what is the tool-stack offered for server virtualization ...
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1answer
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KVM guest cant fetch packages thus it's reachable from ssh

I am a bit lost regarding my kvm setup. I rented a root server at hetzner.de and now wanted to setup virtualization using libvirt & kvm. I created a bridge br0 which now holds the static server ...
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1answer
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Can't access Apache installed on virtual machine (KVM) running Ubuntu 18.04

VPS: KVM (SolusVM), VM OS: Ubuntu 18.04, Network card: Virtio / Intel Pro 1000, I can ping VM IP 21X.XXX.XXX.XXX from my machine(at home). But cannot access Apache port 80 using 21X.XXX.XXX.XXX or ...
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Cannot create VPS virtualizer

I have installed Virtualizor (KVM) on a CentOS server and I'm trying to create a VPS I have added storage and an IP pool for my VMs for creating storage I followed this guide https://www.virtualizor....
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Usage of libvirt rpc protocol

Where libvirt rpc protocol is used? Is it used inside remote connection communication? I have read that it used between libvirt library and libvirt daemon.
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kvm tcp vnc connection

Do someone have correct tcp vnc configuration for kvm? I have tried various ways correcting lines in libvirt.conf, qemu.conf, but they do not help (changing listen address, changing flags, changing ...
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Cloudstack VM use more CPU than restricted

I have a private cloudstack cloud with the following configuration: host server: ubuntu 14.04 KVM hypervisor 2x 2400 MHz CPU (amd athlon 64 X2 Dual Core Processor 4600+) virtual machines: 1x 500 ...
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1answer
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KVM/libvirt: Guest monopolizes bridge

I'm having a problem in which the first guest started on a VM host can send traffic through both of its assigned interfaces, but subsequent guests can only send traffic through one interface. My VM ...
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1answer
924 views

KVM unix socket file permission for VNC

I'm using kvm-qemu/libvirtd for a bunch of kvms. I'm using vnc for the graphical interface. By default, it listens on a tcp socket. I want to have it listen on a unix socket instead. Looking at some ...
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KVM Server error

I have installed KVM server in Centos 6.4 and i have created gluster storage pool in that gluster storage pool i have installed some linux and window VM's i have assigned 1GB RAM and 20 GD virtual ...
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1answer
345 views

Implementing hardware virtualization for custom hardware

When using QEMU/KVM there are certain network adapters that are supported and emulated. If one wanted to emulate the guest OS's original network adapter (e.g - a Broadcom interface that was present on ...
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1answer
2k views

Import virtualBox appliance to KVM

Im new using KVM as a virtualization solution. Currently I'm using VirtualBox to manage my virtual machines in my personal computer, but I'm moving my virtualization to a Server, so I set up a Linux ...
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1answer
898 views

We have Solaris 10 VM in KVM (ProxmoxVE) how to check if Solaris is using all cores?

I'm trying to figure out is VM Solaris 10 (which is virtualized with KVM on ProxmoxVE) using all allocated CPUs? Host HW is Dell poweredge r720. And find a way how to check that for example gzip on ...
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1answer
967 views

Kvm poor cpu performance

I have running some Minecraft Servers in a Qemu VM over Libvirt, and the performance is only half good than on real hardware. Libvirt started the vm over: /usr/bin/kvm -S -M pc-1.1 -cpu SandyBridge,+...
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2answers
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How to mount disk on centos 6.4 KVM server

I have Centos 6.4 on KVM server already up running with couple of sites, now i am almost run out with space so i decide buy from the server provider more gb in order to increase the HDD. I contact the ...
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1answer
632 views

Cannot access Qemu/KVM virtual using console, VNC, or SSH, or access via network (IP range no longer valid) [closed]

I have the host sitting here next to me, so you'd think I'd have decent control of the guest. I should add that I have already attempted various other means, such as mounting the drive, but I have ...
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2answers
787 views

VM running perfectly when its disk image is deleted? [closed]

Does anyone has such experience that you accidentally delete the used disk image when virtual machine is running? I would expect that the virtual machine will fail immediate, but, surprisingly, it ...
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3answers
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QEmu-KVM: How to configure VMs without libvirt stuff? [closed]

In order to fully understand and learn more about the KVM technology, I need to manage and run VMs with just the command line stuff, that's the kvm command. So far I've done everything I need, but ...
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2answers
187 views

Turning physical linux server into several virtual servers [closed]

I'd like to create several virtual servers (all running linux) on my physical server. All of them will be used as headless servers - ie. they'd be the equivalent of an EC2 instance but running on my ...
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1answer
154 views

Should I use FAT or NTFS when using Windows XP as a KVM guest? [closed]

I am installing 32-bit Windows XP as a KVM guest on CentOS 6. Should I be using FAT or NTFS filesystem and why?
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1answer
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KVM vCPU: Creating VPS with more GHz

I was trying to find a suitable answer to my question about if it is possible to create 2 x 3 GHz guest on a host server that has 6 cores running at 2 GHz. As I understood I would have 12 GHz total ...
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1answer
107 views

Live migration without stopping source VM after migration

Is there any possible way to perform live migration using KVM/QEMU/libvirt without stopping source VM after migration? I want to make full consistent backup of VM under KVM hypervisor without stopping ...
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1answer
143 views

CLI vs GUI on a Linux Server in this day and age, what's the downside of GUI?

I'm starting to look into KVM for virtualization because I can't afford vSphere. I'm "OK" at command line and use it often but no pro. I prefer a GUI, but for a server bare minimum has always been the ...
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2answers
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Why is Windows 7 64 bit not recognising my IDE HDD in KVM?

I'm trying to run Windows 7 64 bit on KVM on Ubuntu 14.04.3 LTS (GNU/Linux 3.16.0-46-generic x86_64). If I install Windows 7 32 bit, the windows installer recognizes the IDE HDD, but the 64 bit ...
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1answer
46 views

RHEL6 undo virtual client rhel6 [closed]

I am running rhel6 on my laptop. I was playing with the Open Client Go Virtual and accidently installed a KVM image of RHEL6. It runs the full virtual machine. I want to unregister, delete and reclaim ...
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1answer
924 views

How do i find the overcommit ratio for CPU on a KVM host or for that matter on any hypervisor?

I have a host and I have installed KVM on it.Now I need to know how much overcommiting of resources it allows, CPU, memory. Is there some command to get the ratios or it all exists in theory and no ...
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1answer
2k views

KVM vs Hyper-V. Which hypervisor is best for windows guests? [closed]

I am currently testing openstack for windows guests (XP and 7). I have deployed openstack "all in one" on system with following specs Processor corei5. (4 physical cores and 8 Threads with HT ...
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3answers
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Why is Qemu Virtual CPU on my kvm guests [closed]

can some one please clarify this. I am new to kvm and created two guest instances one linux and one windows. On both Guests, CPU is showing as QEMU virtual CPU,why is it so? if kvm utilizes ...
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1answer
99 views

Difficulty in assigning resources to KVM virtual machines leading to extremely sluggish performance on VM

Physical Server Setup: OS: Ubuntu 16.04 RAM: 384GB CPU: Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz with 2 sockets, 8 cores per socket, and 2 threads per core, so the system reports it has 32 ...
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1answer
170 views

Provision a virtual server within CentOS 7? [closed]

This may be a really silly question, but I currently have a dedicated server and I have an incredible amount of redundant hardware. I'd like to be able to provision virtual servers running various ...
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1answer
29 views

KVM and external multiple external IPs [closed]

I want to have KVM with several VMs on it. I have several external IPs connected via one interface. As I understand I cannot use bridging if I want to have each VM with external IP. Am I wrong? Is ...
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1answer
93 views

live migration on KVM

I knew that the KVM can be run in ATOM server processor ( because ATOM server processor support intel-VTx ). But I'm wondering it is possible "live migration" in ATOM server. Who know about this ?
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1answer
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how to know linux server reboot reason

I've a linux server previously it was on physical machine. Physical machine was getting stuck and i had to reboot it. I shifted it to xen vm. After shifting to Xen vm its now rebooting. Its doing the ...
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2answers
427 views

is it possible to load virtual machine to memory like that of a live cd

Can we create and run a virtual machine that uses RAM only or minimized HDD usage. That is same as the working concept as that of live CD. I know It is possible,but still confused,whether it can ...
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2answers
2k views

Knowing when a qemu vm shutdown (initiated via telnet using QMP) is finished

When I start a qemu (Windows Server 2003) virtual machine with -qmp tcp:127.0.0.1:4444,server,nowait I can make it shutdown with the following script #!/bin/bash telnet 127.0.0.1 4444 <<JSON ...
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0answers
17 views

Where to buy no oversold, no speed limit,GDPR compliance for CN2 GIA VPS? [closed]

Where to buy Chinatelecom Next Carrier Network Global Internet Access KVM VPS? (Where to buy no oversold, no speed limit, strict compliance GDPR Policy,Support cryptocurrency payments CN2 GIA VPS?) ...
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1answer
786 views

virtual machine manager window shows no fonts on ubuntu 12.04 remote client [closed]

I am connecting via ssh to virtual machine manager on remote CentOS 6.2 serverand the virtual machine manager window opens but shows no fonts. The text is just little Squares, cannot read anything on ...
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5answers
569 views

Can't telnet a server from vps

i try to understand why i can't telnet this server 213.132.48.107 from any of my VPSs. Well this ip is for a mail server i don't own but our emails are not received by this server. when i checked the ...
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1answer
988 views

Install ProxMox AND cPanel [closed]

I'm in the process of upgrading our server to something much larger. This new server has CentOS and cPanel/WHM installed by default. My question is, is it possible to install a VM solution like ...
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1answer
228 views

Consolidating a server and a desktop on one machine [closed]

What is the best way to have a server and a desktop OS on one machine, with the desktop being displayed on a monitor directly connected? Visualization, with each having a separate guest, seems ideal (...
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1answer
3k views

Share a Linux Host's Folder With a Windows Guest Without Networking [closed]

I need to share a linux host's folder with a Windows guest, however this Windows machine will not be allowed to have internet support so no NIC will be added to the device. How do I share a folder ...

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