Tagged Questions

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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4
votes
0answers
24 views

PCI-DSS: Virtualization segmentation in ESXi environment

I have already asked this question over on Information Security but so far it has not garnered any comments. I am thinking perhaps it is more of a server infrastructure and configuration question, ...
-3
votes
0answers
34 views

Which is the best OS level container management system [on hold]

I've been researching a bit for the best, securest, easiest to maintain, and easiest to firewall (using software firewalls like iptables) container solutions for a while and I would like to hear some ...
0
votes
0answers
10 views

ssh server stops on ESXi 5.5 for no reason

I have a ESXi host that I have never been able to access via ssh. I have tried every tutorial I can find on enabling ssh via the command line and the vSphere client to no avail. I enable the ssh, ...
0
votes
0answers
11 views

Cloud testing infrastructure - private or existing service [on hold]

We're (a startup company) considering different solutions for the virtual testing infrastructure. We need a variety of operating systems: Windows (including legacy), OS X, Linux, with different ...
-1
votes
0answers
21 views

Trying to understand how SCVMM does networking

I'm having trouble conceptualizing networking in VMM. I thought up the following hypothetical network to try to understand how it would be implemented in VMM: A company with: - Locations in NY and ...
0
votes
0answers
8 views

Making a VDI image bootable for VirtualBox [migrated]

I created a disk image of a Ubuntu (12.04) system by using dd if=/dev/sda of=xxx.img The VDI image was created by using vboxmanage clonehd xxx.img xxx.vdi --format VDI When I create a new VM in ...
0
votes
1answer
28 views

why linux bridge shows 2 mac addresses for one qemu vm?

I am new to qemu networking and pretty confused about the following situation. I launched 5 VMs. Each connects to br0 through a tap device. I also have a dnsmasq listening on br0 for DHCP. The ...
0
votes
0answers
4 views

Existing Win7 machine: Install Ubuntu and convert existing Win7 to VirtualBox VM [migrated]

I have a dev laptop with Windows 7 installed. I want to switch this to Ubuntu and convert the existing Win7 physical installation to use in VirtualBox running under the newly installed Ubuntu. I ...
-1
votes
2answers
28 views

VMware licnesing for vdi and server virtualisation [duplicate]

I am planning to virtualise 50 desktops as thin clients(concurrent users). Well i will need 5 servers where 3 will be used for server virtualisation and 2 for desktop virtualsiation.All the servers ...
0
votes
1answer
27 views

Perfomance of SQL Server on Hyper-V VM

I decided to try server virtualization and I have not had such an experience before. I installed Hyper-V Core 2012, created a virtual machine and installed Windows Server 2008. On this VM I should ...
1
vote
1answer
66 views

VMWare: Are long running snapshots really THAT bad?

This is ESXi 5.5. I know that the VMWare KB is very against long running snapshots, however I do not know of another way to do this. Let's say I have a base Linux system and want to spin up a unique ...
3
votes
1answer
33 views

How can I stop Azure from randomly replacing network cards on VMs?

Azure seem to have the habit of randomly changing the hardware configuration of virtual machines, without telling anything to the user. This is of course mentioned in the documentation, although ...
11
votes
2answers
695 views

Is the gang scheduling employed by VMware a serious drawback?

I was reading some technet articles as well as this one regarding the differences between the way VMware and hyper v doing CPU scheduling. I was wondering if I could get some objective info on this. ...
1
vote
1answer
32 views

Best practice for VMWare Snapshots for lab VMs

I am setting up test\dev machines in VMWare. We have about six users that I would like to give a VM to. They are all going to be based off a single base image (Ubuntu). I could always create six ...
0
votes
0answers
17 views

OpenQRM installation on Centos - database initialisation runs into timeout

I installed OpenQRM on a fresh CentOS 6.5 from the latest source code as described here: ...
0
votes
1answer
54 views

Any solution for redundancy at the server level for small business?

Back in 2009, we have a solution as follow: Physical Server called Server1 with HyperV and has 1 virtual server - Server3 - running file server, web and application Physical Server called Server2 ...
0
votes
0answers
23 views

Guest-VM can only ping CentOS KVM host, cannot access anything else

[root@KVMHOST]# ifconfig br0 Link encap:Ethernet HWaddr 00:1E:67:6B:17:2F inet addr:200.200.100.54 Bcast:220.225.255.255 Mask:255.255.0.0 inet6 addr: fe80::21e:67ff:fe6b:172f/64 ...
0
votes
1answer
73 views

Change KVM boot order with multiple virtio disks in guest

I just started playing with KVM, so learning quite a bit here. I have a guest running, finally got the OS setup the way I want with Virtio SCSI and Net drivers (Win2k3) and am very happy with ...
1
vote
0answers
18 views

Why won't my libvirt VM communicate with apt repositories when wget and ping work?

I'm trying to use Vagrant and Puppet to make it easier to duplicate a multi-server setup for our websites. The recommended workflow is to vagrant up the puppetmaster server specifically first, and ...
-1
votes
0answers
79 views

Warning: Connection timeout. Trying to ssh into a vagrant box [migrated]

I used https://puphpet.com/ to develop a machine, its VagrantFile is http://codepad.org/lSV7EDrC Now after doing vagrant up the machine builds fine, but on vagrant ssh I get this: default: SSH ...
0
votes
1answer
23 views

auto assign ip address to httpd.conf

I am building a cluster of servers in which new virtual machines will spin up as resources are needed. Is it possible in the apache config file to use a variable that will detect the servers ip ...
2
votes
1answer
43 views

Placement of OS and SQL files

we are in process of setting up our SQL server which is clustered across 2 HP DL380p servers using a HP P2000 for the shared storage with 2 raid 10 (8 disks) arrays and raid 1 mirror (2 disks). We ...
-5
votes
1answer
46 views

Layout for virtualisation of 50 desktops [closed]

We are planning to deploy 50 virtual desktops(for normal users) using thin client hardware and VDI solution(using VMware or Citrix).Currently we have'nt virtualised any of the physical servers.I heard ...
1
vote
1answer
21 views

Migrating existing clustered virtual network to a trunk

We have a 3-host VMWare vSphere v4.1 cluster that has a connection to an untagged network (let's call it 192.168.10.0) using two physical adapters, vmnic1 and vmnic2. Both are currently marked as ...
0
votes
1answer
96 views

CentOS 7 (Dracut) - Network boot with gateway in different subnet

I'm trying to auto-setup VM guests with CentOS 7 using network boot and kickstart with external network connectivity based on linux bridge. And I'd like to have solution lightweight, simple and ...
0
votes
1answer
148 views

How can I change Qemu KVM machine architecture from 440fx to q35 with virsh edit or virt-manager

Still trying to get GPU passthrough working and decided to change machine type from older 440fx to q35 ie pc-q35 but if I do virsh edit on the config it refuse to save saying "PCI Bridges not ...
0
votes
0answers
16 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
4
votes
4answers
644 views

vCPU performance between 1 or 2 vCPU's

Within virtualisation (Predominantly VMware) is there a performance advantage using either 1 CPU with 4 cores or 2 CPU's with 2 cores? Let's assume the application running on a VM can use two CPU's.
0
votes
1answer
63 views

Proxmox VE: Multiple shared public IPs with NAT configuration

I have a Proxmox VE (v3.3 @ Debian 7 Wheezy) and got 3 public IPs routed to that server. It is my aim to have multiple VMs sharing those IPs using a NAT configuration so that I can forward single ...
0
votes
1answer
131 views

Debian Jessie Qemu KVM GPU Passthrough to Windows Virtual Machine guest Virt-Manager error Bus PCI not found

I'm having problems with Virt-Manager not wanting to boot a VM and giving error: Error starting domain: internal error: process exited while connecting to monitor: char device redirected to ...
0
votes
0answers
3 views

Archlinux VLAN internet access virtualbox [migrated]

I need to configure Openstack on a Virtual Machine and for that I created an VLAN to support communication between controller and nodes. The problem is that I need internet access on this VLAN to ...
0
votes
0answers
104 views

Convert VHD to use on QEMU KVM

I try to convert a .vhd file (VPC) and get this error. I tried different .vhd files without success. I tried also with a fresh exported VHD with disk2vhd and backup Hyper-V .vhd. qemu-img convert -f ...
0
votes
1answer
24 views

Removing snapshot after removing guest hard disc

I have a server with ESXi 5.5 installed. I recently wanted to add a new hard disk to one of the guests. After adding the virtual disk to it, I took a snapshot just to be sure that nothing would go ...
0
votes
0answers
19 views

Multicasting on guest Operating System

I have 6 guest Operating Systems (windows server 2008) on a vmware 9.0 My host OS is Windows 8.1, And GNS3 installed on the host OS, where I have my topology with 3 routers configure with multicast ...
0
votes
0answers
18 views

Network error when running multiple Virtual Boxes

I have a Ubuntu 14.04 physical desktop that's running some Virtual Box instances (also Ubuntu) through Vagrant. The Virtual Box instances are configured to use static ip and with "natdnshostresolver1" ...
0
votes
1answer
45 views

Is it possible to bridge/join two or more vritual (Hyper-V) switches with the same address range over VPN?

I have several Hyper-V servers which are not in the same LAN. On every server are several Hyper-V guest VMs which are connected via an internal virtual switch. Now I want to to connect these two ...
0
votes
1answer
42 views

live migration of a virtual machine to a different machine

I am trying to do live-migration using KVM (libvirt). VM is called host1 and dest. IP address is 10.81.1.9. However, running the following command gives me an error that I am not sure what this ...
0
votes
1answer
118 views

ESXi550-Update02 missing on host with Dell-ESXi-5.5U2-2068190-A00 Image

I recently deployed a new VMWare ESXi Host with the latest Dell-ESXi-5.5U2-2068190-A00 image. I've just scanned it with Update Manager and it says it has 4 patches available. However 2 of them are ...
0
votes
0answers
30 views

Is it possible to Create a local Virtual Machine (vmWare) from a remote Ubuntu 14.04 installation

I have a bunch of Ubuntu 14.04 machines hosted at a host using their CloudHosting VMWare packages. I have tried to download them but it's not supported. Is there any way to backup my servers and run ...
3
votes
2answers
66 views

How To Monitor And Alert For KVM Hypervisors

We have an environment where we are currently monitoring ~50 VM hosts running esxi. We easily get alerts for hardware events and exceeding performance thresholds via vcenter. We're planning on ...
0
votes
0answers
112 views

Virtualization-(Cluster) with KVM/libvirt on top of a FC SAN

I'd like to set up a 2-node HA-Cluster based on Ubuntu and KVM running about 30 VM's. Both nodes are connected to a HP MSA(5TB) via Fibre Channel. Multipathing's already working and the nodes are able ...
1
vote
1answer
157 views

Is it realistic to host ESXi on a cloud VPS?

We are striving to avoid any on-site infrastructure at our startup. A combination local and cloud-hosted virtual machines have been working for us so far, but now we need an ESXi host as well. ...
-1
votes
2answers
37 views

Finding IP Of Remote Host Machine By IP Of Guest Machine

I am trying to find a way to figure out on which of the servers the virtual machine actually is residing. I know the ip of the virtual machine. It is in a bridged mode on the local network inside one ...
0
votes
0answers
123 views

Is it viable to create CoreOS VMs with Proxmox?

I want to create clusters of CoreOS VMs on our machines. We are already using Proxmox to manage our KVM and OpenVZ containers on these machines, so I am wondering if it is practical to create and ...
1
vote
0answers
39 views

Dealing/Fixing the Ploop issue with OpenVZ — relclaiming lost space

So OpenVZ Ploop has a bug where if users add then delete files the space becomes unclaimed and the disk eventually runs out of space. Now there is a script that fixes that(included below). However, ...
0
votes
1answer
82 views

Is there a way to connect VMWare Workstation / Fusion to non-esx Libvirtd-managed virtual machines?

I'm using KVM virtual machines managed through libvirtd server-side for most of my projects. On my desktop however, I'm using VMWare Fusion Professional which, just like its VMWare Workstation cousin, ...
0
votes
0answers
62 views

Restoring read only domain controller from VM checkpoint

I have several RODC on remote sites, and sometimes power failures corrupts ADDS database which takes some time to recover. I'd like to move RODC to virtual machine (on same server) to be able in case ...
0
votes
2answers
141 views

Guest networking not working on Debian Jessie Host server KVM with br0 bridged network

GUESTS networking not working at all. In other words guest can not ping host or lan gateway. I have br0 bridge already created, also brctl show that vnet0 was properly added by KVM to br0 on guest ...
0
votes
3answers
78 views

Cannot start Virtual Machine

I am trying to setup a Virtual Server using the Windows Server 2008 Hyper-V but each time, when I click start, after creating the Server, I get an error: An error occurred while attempting to start ...
-2
votes
1answer
51 views

VMWare ESXi 4.1.0 - Checking SMART info [closed]

I'd like to know if there's a way to check the SMART info for hard drives on VMWare ESXi 4.1.0? Thank you.