KVM is a Linux kernel-based virtual machine. It is not a program itself, it's a kernel system that exposes /dev/kvm to be used by userland emulators and virtualisation like Qemu. KVM provides access to the VM address space, IO and other functionalities. The VMs using KVM run as processes on Linux, ...
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10 views
iptables and virtual machines of KVM, no ping, no ssh from VMs
Hi everyone :) I have two virtual machines KVM. I did two alias to eth0 - eth0:0 and eth0:1 and put them on an external IPs (eth0:0 - 89.114.122.3, eth0:1 - 89.114.122.4). Now the problem is: ...
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1answer
13 views
error: internal error process exited while connecting to monitor: Supported machines are:
I'm moving Ubuntu Server guest machines from an Ubuntu Server Host to a CentOS 6 Host machine. My intent is to keep the guests as Ubuntu Servers and just change the OS of the Host.
I've moved the ...
0
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1answer
23 views
iptables and virtual machines of KVM, external ip
Hi everyone :) In general, I'm still struggling with the virtual machine KVM. I did two alias to eth0 - eth0:0 and eth0:1 and put them on an external IPs (eth0:0 - 89.114.122.3, eth0:1 - ...
1
vote
1answer
43 views
KVM VMs and virtual network, how to assign external IP addresses?
So, my question is: there is a remote server on Red-Hat with an external IP-address, eth0: inet addr: 87.112.140.53 Bcast: 87.112.140.255 Mask: 255.255.252.0, and is a virtual interface, which raises ...
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0answers
20 views
Ocfs2 volume sharing between hostOS and VM with KVM on Ubuntu
I'm trying to setup ocfs2 on Ubuntu Oneiric Server (3.0 kernel). I'm sharing a LV from a VG on the host. The HostOS is Ubuntu Lucid (also on a 3.0 kernel).
I can share the ocfs2 partition on the ...
0
votes
1answer
35 views
configuration of bridge to send traffic to external switch
I created 3 VM on top of KVM/QEMU (RHEL 6.0) using bridged networking. Created one bridge for eth1 and all the VM's are using that bridge for networking. All these VM's have the same subnet address. ...
0
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0answers
25 views
OpenNebula install OS on VM
I have tried it many times, but can't seem to get it working.
What I am doing is creating two images, one of a 10GB disk and one of a net install ISO of Debian.
I set everything up (x86_64, boot ...
1
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0answers
36 views
View Desktop of all currently logged in Users on Windows Server
Were running Windows Server 2008 R2 Enterprise in a small research project at home. We need multiple users running Software in the background. For Monitoring purposes I'd like to have the ability to ...
1
vote
1answer
61 views
Opennebula KVM onevnet
I am experimenting with Open Nebula and KVM and so far I have a frontend and a few hosts (all hosts have two NICs for redundancy).
I know that KVM makes on the hosts a virtual interface virbr0.
...
0
votes
0answers
38 views
KVM network problems
I use ConVirt as virtualization platform. pbr1 works as gateway. When I try to ping any IP from the VM, it says, that destination host is unreachable. When I try to ping the gateway, it does. Packets ...
2
votes
2answers
37 views
Managing a QEMU guest from the host's CLI
Can I manage a QEMU guest from the host's CLI? I'm coming from Xen and I liked the xm command. I'd like to shutdown the guest, attach PCI devices to it and so on. Is there a way?
There's the QEMU ...
0
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0answers
14 views
Error when using “ubuntu-vm-builder” command to create Ubuntu11.10 guest on Ubuntu11.10 host
I want to create guest os(Ubuntu11.10) on host(Ubuntu11.10)
with "ubuntu-vm-builder" command.
some error is occured
do you know how to diagnose to this case ?
please Give me a piece of advice.
My log ...
0
votes
2answers
84 views
KVM - disk performance
I have VM and attach physical disk to it:
<pool type='disk'>
<name>X</name>
<uuid>0119698d-d28a-fbc8-6ca3-40c485957e49</uuid>
...
2
votes
0answers
41 views
TCP/IP performance tuning under KVM/Qemu
With more and more companies switching to public cloud services, I'm curious what you guys' thoughts are on TCP/IP tuning in the cloud. Is it worth bothering with? Given that you don't have access to ...
0
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0answers
16 views
How can I use the host's lvm VG as a kvm pool?
I have a machine setup with Centos6 as a virtualisation host. It has a single 250G hard drive that is configured as a single lvm volume group(vg_fluke). Now I would like to use the host's lvm as a ...
0
votes
1answer
54 views
How to permanently attach USB devices to a KVM vserver?
I run a Server using KVM and virt-manager (over SSH). Currently I have the following devices which I want/need in a KVm virtual machine:
+----USB-HUB
+- USB Smartcard Reader #1
+- USB ...
-1
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0answers
23 views
Does anyone have experiences with Tripp Lite NetCommander KVMs? [closed]
I'm considering purchasing an IP-KVM for my organization and came across Tripp Lite NetCommander products. The specific model is B072-016-1-IP for reference. One the features I like most on this is ...
0
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0answers
15 views
How can I log network starting failures, or perhaps reinstall it?
I have 2 disk images on a KVM system. One boots okay, the other does not.
Is there a way of logging the networking to monitor what is going wrong, or perhaps reset it to get it working again, perhaps ...
0
votes
1answer
128 views
Linux storing arp cache entries using wrong interface
I'm trying to get two virtual machines (running CentOS) to talk to host (Ubuntu 10.04) using VDE and the outside network.
So far I'm running into an ARP issue.
On Host I have a physical eth0 and a ...
1
vote
1answer
58 views
Mapping USB drive direct to libvirt KVM virtual machine?
I am searching for information on mapping an existing drive (USB drive) to a KVM virtual machine using libvirt. I have been going over http://libvirt.org/formatstorage.html#StoragePoolTarget. But I ...
0
votes
1answer
56 views
Can't see traffic in my guest OS with tcpdump
I've created a virtual machine (Centos 6.0) using QEMU/KVM, which is also running on a Centos 6.0. The virtual machine is configured to have two NICs. The first NIC is using a bridged network (eth0 of ...
1
vote
0answers
52 views
Virtual networks connected to a computer acting as firewall (KVM)
I have successfully created a schema like this with VirtualBox, but now I have to do a final project and I would like to do it with KVM and Virtual Machine Manager (virt-manager).
I am having some ...
0
votes
1answer
105 views
How to increase video memory in libvirt/KVM gui?
In the 'Virtual Hardware details', it lists the model as 'cirrus' with 9MB of RAM. The RAM field cannot be changed, but how to increate the video RAM? My host OS is RH6 and gust OS is Fedora16.
EDIT: ...
0
votes
1answer
51 views
Shared Hosting using Linux [closed]
I am planning to set up a server hosting multiple websites on a single high-end Linux server on Virtualization-enabled Hardware using a LAMP stack.
I have decided to go with Centos 6.2 as a KVM host ...
1
vote
3answers
62 views
Forward requests to one of several guests on KVM host?
I have an Ubuntu host machine with 3 guests. All of them have different webservices running on port 80. How can I tell the host to forward the request to the appropriate guest based on the hostname?
...
0
votes
3answers
60 views
KVM bridging for virtual machines not working?
I'm currently setting up a KVM with several VM guests. I created the first one but I ran into the first problem already:
root@vm1:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From ...
2
votes
3answers
90 views
KVM: maximum number of cores and amount of memory for VMs
I have a new 8 core machine with 16GB of RAM. I want to run VMs on it using Ubuntu and KVM. Nothing else but SSH will be running on the host.
My question is what is the maximum amount of cores and of ...
2
votes
0answers
98 views
virt-install kept on adding --no-reboot - even though I don't want it to
I have a bit of a problem getting my guests to reboot after the OS installation using virt-install.
For whatever reason, virt-install insists on inserting "--no-reboot" when you create a VM:
...
2
votes
1answer
96 views
KVM and bridge_stp setting
In which situation one should enable the bridge_stp for the host bridge when using KVM?
Is it worth keeping it disabled when not needed?
0
votes
1answer
55 views
Add Two Bridged Interfaces on Ubuntu for KVM
I have ran the following;
sudo /usr/sbin/brctl addbr br0
sudo /usr/sbin/brctl addif br0 eth0
And added the following to /etc/network/interfaces;
auto br0 # for XPProxx86 KVM
iface br0 inet dhcp
...
1
vote
2answers
149 views
Downloads stuck from a VM run by libvirt (kvm) on Ubuntu 10.04 LTS
I first wrote my problem on stackoverflow thinking it was a Maven proxy software problem.
But I realised it was more a problem with my virtualization stack (libvirt 0.7.5-5ubuntu27.19 / kvm ...
4
votes
2answers
153 views
Is there a way to run virt-manager on Windows?
We've been using KVM for almost a year strictly on CentOS 5.x as the KVM host, with Fedora and Ubuntu workstations accessing the KVM host and its guests using virt-manager, virt-viewer, and ssh.
Is ...
4
votes
2answers
56 views
How to prevent ubuntu installation from ejecting cd-rom?
I'm installing ubuntu server 10.04 over kvm switch. I have no physical access to the server. The server has ubuntu installation cd inserted. How to prevent setup from ejecting it after completion?
5
votes
2answers
139 views
How to quit QEMU monitor?
I launched KVM VM with this command:
kvm /kvm/hdd/v1/v1-1.raw -m 512 -daemonize -smp 2 -nographic -net nic,model=virtio,macaddr=aa:aa:aa:aa:aa:01 -net tap,ifname=tap0 -monitor ...
0
votes
1answer
61 views
installation error in kvm
after installimg kvm ,i can't load guest guest operating system
it shows the following error
Unable to complete install: 'internal error Process exited while
reading console log output: chardev: ...
1
vote
2answers
129 views
What is the name of the cable (RJ45 to RJ45) that can be used to connect from a KVM to Cisco serial port?
As everybody knows Cisco's console ports are RJ45. However, the cable they come bundled with is DB9 to RJ45. We have a KVM that allows managing network devices via a serial port but the port on the ...
-1
votes
3answers
84 views
Windows/Linux HDD benchmark
I'm going to compare, how windows virtual machines are working in QEMU/KVM environment and IO performance loss. So I want to measure HDD performance in Linux host and Windows VM. Is there any ...
0
votes
1answer
60 views
How to attribute process time into individual CPU in Linux
I'd like to analyze how the processing time are distributed to individual CPU for a process ( KVM actually). In Linux a task can be migrated to other CPU during its life-cycle, the process may run in ...
0
votes
1answer
113 views
More than one clone of xp qcow2 base image using kvm gives missing hal.dll error
I am running linux mint debian edition.
I have kvm installed and working, using virt-manager as the manager. I have a qcow2 disk file with windows xp pro installed that I used as a base to clone a new ...
0
votes
1answer
160 views
apt-get update can not connect
i run a dedicated ubuntu 10.04 server.
i use kvm/libvirt/virsh to run a virtual machine that's also ubuntu 10.04.
i bridged the network (1 of 2 IPs is routed via NAT to the LAN, where my VM ...
2
votes
2answers
138 views
KVM on Ubuntu: console connection displays nothing
I've created a KVM virtual machine using the following command:
sudo ubuntu-vm-builder kvm oneiric \
--domain xpstage \
--dest xpstage \
--arch ...
-1
votes
2answers
75 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 ...
4
votes
2answers
99 views
Ganeti KVM settings
When I have played with KVM using libvirtd/virsh, I disabled section in libvirt's xml configs for VMs an this gives me CPU usage from 7-8% in idle mode per VM to 1-2% for windows guests. This was a ...
2
votes
1answer
62 views
Can someone recommend a single-port IP-KVM? [closed]
I'm looking for a small rock solid device I can configure with a static IP or DHCP and ship somewhere where a moron can hook it up to a server and I can access the box.
Quality software with quick ...
0
votes
1answer
117 views
Fault-tolerant KVM hosts
I'm going to create a simple virtual hosts infrastructure using QEMU+KVM. It is expected to be very simple, without clouds or any other cool things. Right now the only requirement is the ...
0
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0answers
304 views
AMD Fusion GPU passthrough to KVM or Xen
Has anyone successfully gotten a passthrough working with the GPU portion of AMD's Fusion APUs (the E-350 is my target) on top of a Linux hypervisor? IE, I want to dedicate the GPU to one VM only, ...
2
votes
1answer
603 views
KVM on Illumos (OpenIndiana vs. SmartOS)
I'm considering virtualizing a number of guests onto a single server running a recent port of KVM to Illumos. It sounds like my two primary options will be OpenIndiana and SmartOS. The distribution ...
1
vote
1answer
43 views
Cgroups vs Tasksets in KVM
I have a CentOS 6 host for several KVM VMs with FreeBSD as guest.
I want to bind each VM to use no more than one core at once. What would you suggest to use, Cgroups or Tasksets?
3
votes
3answers
109 views
Getting more database performance - postgresql
There is a django "web application" (from hell) we are hosting on a dedicated server. After some benchmarking I found that the "Application" is amazingly bad at database operations (refactoring is not ...
0
votes
1answer
59 views
Software for managing a cluster of KVM physical hosts?
I am looking for software recommendations for managing a cluster of KVM physical hosts. We are currently using virsh and doing just about everything by hand, and I would like to find a slightly more ...
