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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13 views

Network issue with VMs mixing dedicated public IP and port forwarding

I already have a virtual machine with its own public ip address and I would like to set up a new VM using port forwarding from the host. I have two public addresses: X.X.X.146 for the host Y.Y.Y.99 ...
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74 views

LXD 2.0 on Debian 8.4

I'm running Debian 8.4 and would like to set-up recently released LXD 2.0. Is this feasible, or should I stick with LXC? It seems all focus is on using LXD with Ubuntu.
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49 views

Hyper-V Windows Server 2012 R2 “Cannot create virtual switch” General Access Denied Error 0x8007005

After an ip change on the network adapter connected to a previous hyper-v switch we ran into some issues so I uninstalled the existing virtual switch and attempted to add a new external. I get the ...
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15 views

Errors after unmounting qcow2 image with LVM

I successfully mounted a qcow2 image on my machine (the guest image uses LVM) using: qemu-nbd -c /dev/nbd0 /path/to/qcow2/file mount -o rw /dev/nbd0p1 /mnt/<mountpoint> vgchange -ay VolGroup ...
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18 views

What are the Resilient Overlay Network (RON) downsides?

What are the RON downsides? How this type of network handle with security questions? There are vulnerabilities? The RON's performance is good? Thanks in advance!
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70 views

Where are network namespaces in lxc / lxd?

I am trying to understand namespaces in the context of lxd / lxc. I have two containers which respective eth0 is bridged to br1 and br2 on the host. This is done via a Virtual Ethernet interfaces ...
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6 views

Azure Cost Estimator Tool hung clicking “View Report” after running for 6 days - can I still extract the report?

I'm running the Microsoft Azure Cost Estimator Tool for a length of 6 days with 2HR intervals. This ran successfully and there were no signs of system instability, nothing else has crashed. Hoenter ...
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21 views

internet connection sharing Hyper-v virtual machine switch

I am running hyper-v. I created a virtual external switch and configured it to be shared with the host and the VMs. However the VMs obtain dhcp information just like the host does: same gateway, same ...
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22 views

Without tcpdump running, Linux bridge works selectively

Architecture: Ubuntu 14.04 as a libvirt/KVM host with one VM. There is bridge bri17 on the host, with two interfaces: eth2.17 (uplink to the Internet) and vnet0 (to the VM). Symptoms: all tests ...
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15 views

Are changes since snapshots still stored as changelogs?

It's been four years. Is the accepted answer of this question about VMWare still accurate? In other words (in case for some reason that link ever breaks), is this still true? When you create a ...
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87 views

What's the FreeBSD equivalent for the Linux pointopoint

What's the BSD (FreeBSD) equivalent of pointopoint used in /etc/network/interfaces on Linux (Debian)? I'm following this (Network configuration host system KVM/Routed) guide for how to use Hetzner's ...
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62 views

Libvirt & USB Hub Passthrough

I have a virtual machine which I wish to have a USB Hub and all of its devices allocated to a virtual machine. The Hub in question is a USB hub which itself is plugged into one of the ports on the ...
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19 views

Xen+Libvirt: How to use PVH mode with Libvirt?

PVH mode is an hybrid of PVHVM and PV modes, where you use both virtualization and paravirtualization techniques for improved guest performance. It's been introduced around Xen 4.4. I'm using Xen 4.6 ...
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30 views

Migrate Virtual Machine from KVM to Xen

I'm trying to migrate a Virtual Machine from Qemu KVM to Xen Hypervisor 4.1, but have problems with it. What is the best and simplest way to do it? What I've done so far: I have installed ...
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15 views

Virtual Switch Stack connections to Edge Network

I have a pair of Cisco SG500 switches stacked together as a part of my collapsed core design. I would like to connect this stack to the edge network which is comprised of two Dell Firewall/SonicWall ...
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19 views

Do I need acpid daemon in virtualization guest?

I get VPS with KVM virtualisation (server for hosting services). I remove most of desktop services (like dbus, consolekit, xorg) because of security and stability concern. Guest run on virtualised ...
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14 views

Is host process listening on virtual interface added to virtual switch possible?

I have a working setup of three virtual machines (on VirtualBox) bridged to tap devices added as ports to Open vSwitch. They are able to communicate. Now, I would like to make a host process (one ...
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57 views

Verifying VT-D / IOMMU Support (VGA Passthrough)

I have a 4790K I'd like to use VT-D with for hardware acceleration in a Windows guest VM (Dom0 = Ubuntu 14.04) using Xen. Intel's website CLAIMS the processor supports this: "Intel® Virtualization ...
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20 views

Assign a large subnet of IPs to KVM Guest VM

I have KVM host node running a few VMs. I create them using SolusVM panel, however they don't have an option to add bulk IPs in one shot to a guest VM which is silly. I'd like to know how I can add a ...
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14 views

OpenStack Swift: PID files don't correspond to running processes' PIDs; can't restart services - port already bound

I am running a Docker container with Swift ("Swift all-in-one") on a CentOS 7 host. I noticed that the PIDs in /var/run/swift/*.pid files differ from the actual PIDs running in the system: ...
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9 views

Virtual Host Issue on 1&1 with Debian Server

I'm running a Debian 8 LAMP server with Apache Virtual Hosts configured. I've had it running for a couple years. I recently added a second site and config. When I modified my remote system on local ...
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17 views

VHD from live running (CentOS) linux?

my setup: I have a XenServer and on it run a virtualized CentOS. For some reason I can't move/export/edit the disk inside XenServer. So my idea was to create inside CentOS a vhd and directly export ...
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24 views

how to integrate sendmail virtual users + dovecot + full email address as username

I need to build an email server to process virtual users for several different domains using ssl on a single server. I know how to do that with a single domain using system users + sendmail + ssl + ...
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17 views

Database on Virtual Machine getting corrupt

Primary Domain Controller - Windows Server 2008 R2 Standard (installed on Physical Server) Secondary Domain Controller - Windows Server 2008 R2 Standard (installed on Virtual Machine i.e Vmware EXSi ...
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8 views

configure burst ram for openvz container

Can somebody help me out as to how can we set the burst ram for OpenVZ container using proxmox API. I tried using the following command but with no success: pvesh set /nodes/pve/openvz/{vmid}/config/ ...
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32 views

Cant set extra option to VPS in proxmox 3.4

I am using Proxmox VE 3.4 to create an openvz container...i was able to create a vz container but i want to know are the advanced option like VNC, ppp, tun tap feature available in proxmox VE on any ...
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60 views

VMware Horizon View 6 Connections Fail w/ Changing Server Names

One of our Horizon View machines has intermittent issues connecting to its host via PCoIP. I do not have extensive Horizon View experience, but when looking through connection logs, I noticed that ...
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36 views

How to alias default gateway IP address

The problem is the following: I have got two dedicated servers at OVH. I have got few virtual servers (KVM+libvirt) and I want to migrate them between two hosts. I already managed to make live ...
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76 views

Proxmox safely remove node from cluster without deleting vms

I have 2 nodes, each of them on a separate device. I joined the second node to the cluster to migrate a copy of one of the VM's to it. Now I can't login to the web manager of it, just can login to ...
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11 views

Get direct block addresses - Sleuth kit - XEN

I am using sleuth kit library in order to write an introspection tool for XEN hypervisor and my question is if we have the inode number of a file on a disk [ guest VM - ext4 filesystem], for example ...
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26 views

Virtualizing physical Windows Server 2003 R2

I have a HDD that seves as dead data archive. I want to virtualize the HDD in XenServer in atempt of evade some problems (like losing the HDD itself). I tried the VMconverter from VMware (to futher ...
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8 views

hostd.log shows only last few hours

I was trying to look at the hostd.log to see an alarm that was issued for a VM. The alarm happened at 8:30am which is 12:30 UTC in vmware log time. However, when I view the log it starts at 16:47. ...
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120 views

Issues Importing Virtual Box(VDI) images into Google Compute Engine

I've attempted to import/migrate an Ubuntu 14.04 LTS Server image I made in Virtual Box into GCE. However, after I upload the image into cloud storage and try to make an image from it, I receive a ...
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91 views

What is the most recommended way for lightweight virtualization on Debian 8 Jessie?

When Debian 6 was launched, I used a virtualization tool called OpenVZ, when Debian 7 was launched, OpenVZ was deprecated and people were advised to use LXC instead. On Debian 8, I saw Docker and ...
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60 views

File not found while running docker

I am new to docker and need some help. I had a working docker image which I created using root file system archive by following these steps:- 1. cat file.tar.gz | docker import - docker_name 2. ...
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100 views

xend is not found - Xen 4.5 on Odroid XU3 ARM

I am trying to set up Xen virtualization on Odroid XU3 ARM platform. I have done all steps from http://forum.odroid.com/viewtopic.php?f=98&t=6643 to be able to boot into Odroid XU3 with ...
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341 views

Creating a XenServer VM from the Command-line

I have an issue in which I cannot understand how to create a XenServer Virtual Machine from the command-line. I have installed XenServer on an unused Tower unit, and currently SSH into it from my ...
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73 views

On debian, removing one virtual interface eth0:0 removes other virtual interfaces. Why?

Tried searching for the answer a lot of times. I have two virtual interfaces eth0:0(10.0.0.1) and eth0:1(10.0.0.2). I am trying to remove only eth0:0 interface. If I execute the command "ifconfig ...
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11 views

KVM Error While Deploying Existing Image

I have KVM running with 2 VM's. I tried backing up one of the images by copying it and then deploying using virtual machine manager using that existing image, that fired up fine. Now the second backup ...
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264 views

How to use vhost-scsi with Intel P3700 NVME SSD in KVM

I am using proxmox beta 4 in my HP DL 380 server with KVM. I configured Intel P3700 NVME - nvme0n1 as Virtio and on windows server 2008 r2 with virtio-scsi driver. I am getting 100 K random IOPS ...
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23 views

Need Help Connecting Two VOIP Devices?

I have two Motorola XPR 8400 two way radio repeaters. These repeaters are capable of voice over ip. These two repeaters will be placed at two different sites with different ip addresses. I need to ...
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21 views

migrate xen server to new HDD

I have a Xen Server with multiple VMs that are mirrored with DRBD to a Backup Server, and it's running out of space. I want to migrate it to a bigger Harddisk, but I'm not sure about how to go about ...
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32 views

libvirt: can it provision network interfaces where the network backend is running in a domU rather than dom0?

Thanks to a great blog post, only slightly out of date [1] I've managed to configure a dom0 which has no networking at all: physical network interfaces are passed through to dedicated domU guests ...
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144 views

Enabling SSLv3 in vCloud Director 5.6.x

We have some legacy systems that use SSLv3 but vCloud Director disabled SSLv3 by default from version 5.5.3, see: ...
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2k views

Server 2012 R2 Hyper-V Virtual Switch host mac address conflict 331FLR

I have 3 new HP DL360G9 servers all running Server 2012 R2 standard with the Hyper-V role installed. All the servers have the built in Intel 331FLR 4 port gigabit nic. I have the ports teamed into 2 ...
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50 views

How to hot add a new disk with virsh attach-disk?

I'm trying to add a new LVM disk to my guest machine (Ubuntu 14.04.1) by doing the following on the host: lvcreate -L 14G -n vm_vm005_data3 vg00 virsh attach-disk vm005 /dev/vg00/vm_vm005_data3 ...
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44 views

Can I install openstack shared services on a compute node?

I am currently evaluating Openstack as an alternative to VMWare for our company. I would like to install Openstack on a Dell FX2 chassis with three physical servers in it. I was wondering if it was ...
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101 views

Stucking qemu-kvm process

What i have: CentOS 7.1 as KVM host - Xeon E3-1200 v2, 32GB RAM, with and without dedicated raid controller (i tried both options) 3x Ubuntu 14.04.2 as quest VM (3 CPU, 512MB RAM on each VM) host ...
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142 views

How to pass boot paremeters to a XenServer HVM? Is it even supported?

I'm willing to build up a fully automated installation of CentOS 7 over XenServer 6.5 using kickstart. According to XenServer 6.5 Documentation, CentOS 7 is now supported in HVM mode: In XenServer ...
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26 views

OpenSUSE Xen Multiple Apache VM's

I am attempting to set up an OpenSUSE 13.2 server with Xen Hypervisor installed. The problem I have now encountered, is how do I route the correct requests to the correct VM instances. Lets say I ...