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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6
votes
1answer
3k views

What is the recommended method to prepare Red Hat/CentOS 7 templates?

If I need to deploy Red Hat 7 from template, I would like to take the recommended steps to make my "golden image" clean. It should boot to the first boot prompt and guide the user through the typical ...
2
votes
1answer
79 views

Thought about using my server hardware effectively

I will receive my new server hardware in some days, and of course I am already planning on how to use it the most effective way. My current thoughts are about scaling the web and database server on a ...
0
votes
0answers
25 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 ...
0
votes
1answer
131 views

Troubleshooting SmartOS VM that won't start

I'm running SmartOS 20130405T010449Z with an Ubuntu KVM inside. The Ubuntu VM ran healthily for months, then after a reboot of the physical hardware the vm no longer connects to the network on ...
1
vote
0answers
42 views

Virtual Desktop Setup for Small Team [closed]

We have a 24 GB RAM and Quad core Workstation need to be ready as Virtual desktop Server. The need is the Developer(5 users) must be able to Login from LAN or Internet to the Workstation in order to ...
2
votes
2answers
122 views

ganeti-metad bind address based on cluster configuration

On my machine (debian jessie) ganeti-metad listens on all interfaces: # netstat -lepn | grep metad tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 0 66528 ...
2
votes
0answers
63 views

Best practice for configureing vmware dv uplink port groups?

I'm creating a distributed virtual switch - each host has 2 physical NIC's each of which will map to an uplink port. I want to create uplink port groups so i can set up NIC teaming, I wanted to know ...
4
votes
6answers
704 views

Deploying virtual machines - Windows Guest/Linux Host or vice versa?

I'm looking to deploy several virtual machines for users. They need access to both Windows and Linux. They also need to use the computers graphics card (for Photoshop, modeling, etc) under Windows. ...
0
votes
2answers
423 views

Unable to import Virtuabox VM onto Headless Server

I have a Virtual Image on my Windows Machine. I want to transfer it to my Headless Debian Server. I've installed VirtualBox on the Debian machine. On the windows machine ive exported the file as a ...
1
vote
0answers
16 views

How can I tell which customization specification has been applied to a deployed VMware VM?

I have inherited a load of virtual machines deployed from templates in VMware. Is there a way that I can tell which customization specification was applied to them during the process?
0
votes
2answers
414 views

What is the correct way to activate a Server 2012 Guest in Hyper-V (NOT R2) with a server 2012 host using virtualization rights?

I've done quiet a bit of searching on this and can't seem to find an answer, everything seems to refer to R2 and AVMA or just simply states you are allowed 2 visualization rights and nothing else. ...
2
votes
1answer
38 views

New linux releases on old hypervisor

I have just bought a Proliant DL360 G5 for learning and testing. It's an old machine but it's enough for me. When I looking supported operating systems on HP's support pages, I noticed that the ...
12
votes
8answers
2k views

Free hypervisor for small configuration

I'm building a server for virtualization for a non profit organization. I was planning on employing VMware ESXI free but I'm second guessing my plan because newer ESXI don't seem to be well supported ...
0
votes
1answer
47 views

Persist OVS mirroring on Xen reboot

I'm running Xen on Debian with five guest VM:s. I've used the following command to setup port mirroring to two of the VM:s ovs-vsctl \ -- --id=@m1 create mirror name=detector \ -- add bridge ...
0
votes
1answer
103 views

How do you create a qcow2 file that is small yet commodious on a Linux server?

I believe that there are qcow2 files that displace a small amount of gigabytes on a server (as verified with a df -h on the physical server) yet allow for lots of space when you log into the ...
3
votes
1answer
763 views

vanilla ubuntu-vm-builder on i7 aborts aborts (with PAE?)

host: intel i7-4* cpu, running linux kubuntu 14.04 guest: attempting to create. ubuntu-vm-builder kvm saucy eventually, Get:1 http://archive.ubuntu.com/ubuntu/ saucy-updates/main ...
-1
votes
1answer
107 views

clonehd takes 2 hours for a 100GB disk. Expected? [closed]

I have a VirtualBox image using VDI and flexible size. Right now the physical DVI file 94GB. The host is an Ubuntu server and the guest is a CentOS 6.4 with ext4 partition. The host is using a sata ...
0
votes
1answer
53 views

How do I add storage to a VM so that the added storage is dedicated to a new directory?

I have an Ubuntu server with virt-manager. I have an Ubuntu VM running on this host from a qcow2 file. I don't use separate disk files or img files besides the qcow2 file. I want to allocate 50 GB ...
0
votes
0answers
111 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 ...
0
votes
2answers
38 views

System configuration for virtualized environment hosting many VMs

As a company we are going for a new server that will run hypervisor and host another 3 VMs - Two business systems + VM with Sql Server only (Equivalent of AWS RDS) Operating systems of each VM and ...
3
votes
3answers
11k views

CentOS 6 on Hyper-V - network adapter doesn't work (no checksum feature)

I have installed CentOS 6.0 on Hyper-V Server 2008 R2 SP1. VM has only synthetic network adapter enabled. Installation was successfull (without any network), then I installed Linux Integration ...
6
votes
5answers
48k views

How to extend a Linux PV partition online after virtual disk growth

VMware allows to extend the size of a virtual disk online - when the VM is running. The next expected steps for Linux system are: extend the partition: delete and create a larger one with fdisk ...
0
votes
1answer
58 views

How to tell if VM in KVM is using VT-x

I have a machine running under KVM which is not performing very well. I have been trying to google a way to determine if a VM is using VT-x. I can find plenty of links on how to determine if your ...
0
votes
2answers
567 views

xenserver - xe-toolstack restart - i lost connection from xencenter

After Xencenter-toolstack restart i lost connection from xencenter I try to restart using ssh - putty following message is showing and i lost the browser access also ............ All xe ...
0
votes
1answer
49 views

ESXi create instances of the virtual machines for each user

We set-up an ESXi server at our office not long ago, it works well. The users connect to the server with vmware Workstation to use the vms, but some of the employees are complaining that they don't ...
1
vote
1answer
60 views

Vagrant VirtualBox with many CPUs

I'm running a VirtualBox VM through Vagrant and I've noticed startup time performance decrease when adding more CPUs to the machine (Vagrant would timeout). E.g. there is a big difference in startup ...
4
votes
0answers
54 views

How can I provide services to an internal air-gapped extranet

Background - "Extranet" We have about a dozen users that are on what I would call an Extranet. It is an air-gapped LAN that is physically in the same location as our primary LAN. We share the ...
-2
votes
1answer
202 views

Best Free Hypervisor with HA [closed]

We have been running the free version of Citrix XenServer for about 2 years now and it has worked OK for the most part, but we have also had our issues with it. (problems with bootloaders on various ...
54
votes
10answers
14k views

How to [politely?] tell software vendor they don't know what they're talking about

Not a technical question, but a valid one nonetheless. Scenario: HP ProLiant DL380 Gen 8 with 2 x 8-core Xeon E5-2667 CPUs and 256GB RAM running ESXi 5.5. Eight VMs for a given vendor's system. ...
0
votes
0answers
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. ...
1
vote
2answers
2k views

Postfix virtual setup not delivering root-mails locally

I've got a postfix virtual setup with MySQL and dovecot. Everything is working fine, the only problem currently is that mails to root are not delivered locally as it should be. Instead, postfix ...
3
votes
2answers
4k views

Can ESXi pass video card to VM to do CUDA?

I have an ESXi 4.1 running on hardware that can run 4 16-lane PCI-e cards. I would like to have access to the underlying hardware from a Linux VM, to run some CUDA programs. So far all I can see ...
46
votes
6answers
42k views

What range of MAC addresses can I safely use for my virtual machines?

I want to assign my virtual machines MAC addresses so that I can configure DHCP reservations for them so that they always get the same IP address regardless of which host hypervisor they are running ...
5
votes
3answers
3k views

XenServer Performance

we've got 2 x HP DL360 G5s with Quad Quad Xeons 2.6GHz and 32GB of memory each running XenServer 5.5 and they access an OpenFiler box (with 8 x 320GB SAS 10K drives) via copper CAT5 (1GB) for the ...
4
votes
4answers
198 views

Risk when deploying virtualized production servers without in-house virtualization expertise?

I've been asked to evaluate moving three production servers to a virtualization platform. The servers currently run Windows Server 2003 with a mix of applications that, given a catastrophic failure, ...
1
vote
4answers
973 views

XenServer - on ISCSI?

I have a question about XenServer running on a ISCSI SAN If my XENSERVER dies, would I still be able to purchase a new server, install XENServer and then load up the existing VM's on the new server ...
2
votes
2answers
136 views

hostname case sensitive - different output for getent

[root@GFVM4 ~]# hostname GFVM4 [root@GFVM4 ~]# [root@GFVM4 ~]# [root@GFVM4 ~]# getent hosts gfvm4 192.168.122.151 GFVM4 [root@GFVM4 ~]# getent hosts GFVM4 fe80::5054:ff:feac:787 GFVM4 [root@GFVM4 ...
1
vote
0answers
40 views

Virtualizing some domain controllers in a forest

our company has an AD forest made up of a root domain (domain ROOT) and two child domains (SUB1 and SUB2). The ROOT domain contains 2 DC's. SUB1 has 4 DC's and SUB2 has 3 DC's. Currently all the DC's ...
1
vote
2answers
1k views

Can't RDP to VM over Azure Point to Site VPN

I set up a point to site VPN from my computer to my vnet in Azure. Everything connects normally and even on the portal it says the tunnel is established. When connected to the VPN, I am still unable ...
0
votes
2answers
292 views

VMware ESXi, uploaded virtual machines won't start

We just installed a new ESXi server to our office (LENOVO TS140, ESXi 6.0.0). If I create a new virtual machine on ESXi, it works well, but we have a lots of old virtual machines (not that old though, ...
1
vote
2answers
1k views

seamless mode remote desktop connection from linux to windows

I am a programmer using Linux as my main OS, however sometimes I need to use windows (ie, office, ea). I'm running qemu with kvm to access the windows "machine". I would like to achieve something ...
0
votes
2answers
13k views

Cannot ping a VM from a Hyper-V host

I am facing a weird situation in my network environment. My infrastructure looks like this: I have a D-LINK DIR-635 acting as my default gateway (192.168.0.1) A physical Windows 2012 Server ...
1
vote
2answers
457 views

Building virt-viewer on CentOS failed

When I have attempted to build virt-viewer 0.2.x on CentOS, I had a build problem: virt_viewer-viewer.o: In function `viewer_resize_main_window': /root/virt/virt-viewer-0.2.0/src/viewer.c:285: ...
0
votes
0answers
87 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 ...
0
votes
0answers
12 views

Debian used + available does not equal size (storage) [duplicate]

I'm trying to find out why /dev/sda1 Used+Avail != Size. I ran a df -h and the output I get is this: File system Size Used Avail Use% Mounted on /dev/sda1 320GB 683M 303G 1% ...
0
votes
2answers
722 views

ADO 2.8, VMWare and SQL Server - sudden bulk dropped connections

We have an overworked server currently running a single SQL Server 2000 instance on physical hardware, and about 40 different apps interact with it on a daily basis. Last year, the RAID controller ...
-1
votes
1answer
46 views

Create something like Citrix XenDesktop using Xen [closed]

I am doing an academic project. I want to deploy a Virtual Desktop Infrastructure for my college. So, is there any way/guideline to make something like XenDesktop using Xen on a Linux Distro from ...
0
votes
4answers
3k views

Running VMWare ESXi on Apple Xserve

So we're running VMWare Server running on Windows Server 2008 which we administer via the web interface. However it turns out the machine we're running it on has serious hardware limitations, most ...
-4
votes
2answers
540 views

Apple XServe 2,1 Questions (ESXi, Temp) [closed]

So I have Apple XServe 2, 1 (Earlier 2008 model) I am trying to install ESXi 5.1 on it. I've read it that it's possible. I'be burnt the ESXi ISO to a dvd-r. I am now trying to boot from it but I have ...
4
votes
3answers
203 views

How can a VMware datastore be moved to a different device?

I have two disks physical disks and only one datastore at the moment. I would like to move my datastore from Disk2 to Disk1. I'm sure this is possible but I cannot figure out how to do it from the ...