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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240 views

SSH using Agent Forwarding with Windows Host OS, Vagrant Ubuntu Guest OS, and Keepass/Keeagent

Intent: To be able to deploy to lan-example.com from any dev environment; whether it be directly from the virtual OS, or any single-OS system, or even over the internet using ONE SSH key stored in ...
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120 views

Configuring Proxmox Cluster Storage

We are configuring proxmox on our servers at two locations each location has; 1 x hp c7000 enclosures with 16 blades 1 x hp proliant dl585 We also plan to add a 24TB SAN to each location. We are ...
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1answer
240 views

Pfsense edge firewall .. DMZ … pfsense internal firewall + squid

i want to setup Pfsense on edge .. DMZ .. Internal PFSENSE with squid + squid Guard + lighttp for reporting... Internal Network. edge firewall will have 2 wans on loadbalancing & failover. ...
3
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1answer
605 views

GPU support on OpenStack/CloudStack

I'm wondering if anyone here has had success with any of the cloud orchestration layers using a GPU (preferably vGPU)? I've been able to get XenServer 6.2 to successfully see our nvidia GRID K1 card ...
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1answer
65 views

My server boots a kernel I don't recognize

On my dedicated server I'm running Debian 7.5 as an OS. I have installed OpenVZ for amd64 architecture to use the benefits of virtualization but after successfully installing it (following these ...
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67 views

Is it possible to virtualize a Genband/Broadsoft M6 voip telephony system?

I work with a company that runs a hosted VOIP platform originally known as the Genband M6 acquired by Broadsoft a few years back. This system is going end of life March 2016 and will no longer be ...
0
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1answer
49 views

Managing disk space with > 500 virtual windows servers (strategy ?)

I'm working as an admin in a medium sized company. Over the last 10 years our amount of servers increased from less than 90 physics to more than 500 virtual machines including a few physics as host ...
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1answer
667 views

Promiscuous mode in KVM

I have cloud system based on Openstack Icehouse-version. Now I want to test newer version of Openstack (Juno) inside my existing cloud. All hosts and guests use Ubuntu 14.04 as their OS. KVM is ...
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560 views

XenServer 6.5 upgrade: NVIDIA GRID K1 gives “PAT Configuration unsupported”

We have two Supermicro SYS2027GR-TR2 servers that were running XenServer 6.2 SP1. Each system has one NVIDIA GRID K1 video card installed. We just upgraded the servers to XenServer 6.5 by doing a ...
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1answer
168 views

Anyway to create a single bootable image from Windows Server Backup vhd files

So I have a Window Server 2008 machine that I need to restore. The machine is on, but will not boot into the OS. I really don't need the machine anymore. I have Windows Server Backup vhd files. Is ...
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1answer
286 views

Major Issues with Sysprep, server now has a installation prompt

So yesterday I asked this question: How to create a single image of Windows Server 2008 R2 to use on a Azure Virtual machine I was told by multiple sources I need to run sysprep against the machine, ...
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58 views

server 2008, SMB issues after changing to virtual network

I have a windows 2008 server that I use as AD, DNS, and mostly for file sharing. I wanted to use hyper-V to add a virtual Linux box for some network monitoring software. So I added the external ...
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0answers
20 views

Opposite answers, which is true: Can a vCPU be mapped to more than one physical CPU? [duplicate]

I have a 32 bit optimization software (CPU intensive) which can use only one cpu core. If a virtual operation system in VMware is set to be one vCPU, can this system use more than one physical cpu of ...
0
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1answer
81 views

Server virtual processors and processing units

I am using PowerVM hypervisor with AIX operating system, and having troubles understanding the difference between virtual processors vs processing units. Here is an example: I have got a server with ...
0
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1answer
107 views

How to create a single image of Windows Server 2008 R2 to use on a Azure Virtual machine

I am trying to migrate from a colocation where I own the servers to Azure. I have been following this article: ...
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2answers
49 views

When to use virtual or regular users exim/dovecot?

I'm setting up an exim/dovecot server but i'm looking into when to use virtual users and when to use regulars. Is there a proper use case? I guess i just have to use real users because most of them ...
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1answer
92 views

ls SCVMM 2008 R2 supported on Server 2012?

We currently have SCVMM 2008 R2 on a Server 2008 R2 PC. We are looking to upgrade the server to Server 2012 (possibly R2). Is Server 2012/Server 2012 R2 a supported or compatible operating system to ...
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1answer
189 views

VirtualBox Networking Lab Configuration [closed]

I'm creating a lab for a project that will test a network security defense product's effectiveness in detecting various attacks. I have a physical server with 32GB of RAM and VirtualBox to create the ...
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1answer
133 views

Virtualizing branch office servers

I have several branch offices with a single server at each site. These servers each functions as domain controller, DNS, DHCP, file and print server, and ConfigMgr distribution point. They currently ...
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1answer
41 views

Possible to create a Hyper-V VM with a unique IP address? What are my options? [closed]

I'm testing IP throttling on my site and want to spawn a VM that has a different IP address from the one on my local machine. This seems impossible but I want to ask the community - is the only way to ...
2
votes
2answers
43 views

Samba filesharing to Win7

I'm a novice network admin tasked with setting up a pretty simple file share structure for a small non-profit I volunteer for. I wanted to test this in-house because I've only ever worked with Windows ...
1
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2answers
175 views

KVM bridged network like in virtualbox

I have a server with 3 NIC's with OpenSUSE 13.2 and KVM installed. I have installed Debian as guest. My network is 192.168.88.0/24, DHCP server is at 192.168.88.1. Now I want my guest to also get a ...
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2answers
463 views

internal error: unable to execute QEMU command 'cont': Resetting the Virtual Machine is required

I try to install a kvm img in my vps, but after i install it, it show root@wz:~# virsh list Id Name State ---------------------------------------------------- 12 ...
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0answers
137 views

When i use virt-install --import, virsh vol-list --pool default return null

I upload my guaji.img file to server, and use following code: sudo virt-install -n guaji -r 512 --os-type=windows --os-variant=winxp --disk #{to_rmt},device=disk,bus=virtio --noautoconsole --import ...
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0answers
23 views

mounting logical volume attached to vm while vm is running

i am experimenting lvm2 and qemu-kvm. and I want to share and ask some questions. at the end of there is appendix what i am doing. a logical volume on host is attached on guest host (vm) as vda. this ...
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0answers
558 views

How to convert clonezilla backup image to virtual machine?

I have a 30gB tar.gz disk image of a physical debian machine, created by clonezilla - what's the easiest list of steps to follow to convert it to a virtual machine? Do i have to necessarily make .iso? ...
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1answer
104 views

Secondary IPs on DMZ machines not working

I am moving some virtual machines from my DMZ in a bladecenter over to my new cisco UCS. We are using Hyper-V, and are running Server 2012 on the old bladecenter, and Server 2012r2 on the new UCS. ...
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0answers
89 views

CoreOs VM getting deleted after shutdown on libvirt

I installed CoreOs on libvirt using link https://coreos.com/docs/running-coreos/platforms/libvirt/. The VM is also showing inside Virtual Machine Manager and working fine. The problem is once I ...
1
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1answer
322 views

Unable to ping between ESXi host and Netapp storage on the same switch

I am unable to ping between ESXi host and Netapp controller that are both connected on the same switch and configured for private IP addresses. Yet I CAN ping between 2 Esxi hosts and between 2 ...
2
votes
1answer
788 views

Nginx Virtual host 403 Forbidden

I have just brought a domain name (example.com) and have setup a URL frame redirection to my server's IP XXX.XXX.XXX.XXX, however I am getting a 403 forbidden error. I can access pages fine via the ...
16
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2answers
1k views

Is running permanently in a VMWare snapshot bad for performance?

I understand that the VMWare KB frowns upon long running snapshots mainly due to two things (In my opinion) Taking tons of snapshots can fill up the data store. Snapshots are simply delta files. ...
0
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1answer
168 views

cloned windows 2003 Domain Controller wont let me add windows 2012 as member

I did a P2V of my Windows 2003 Domain Controller. I'm trying to add a Windows Server 2012 VM (Computer name: SQL-SERVER) as a member of the domain but I can't. I can ping to both VMs. I can do a ...
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1answer
135 views

Git a Windows file system as an alternative to virtual machine snapshots

I am a software developer and I want to test several versions of my software, with different configuration files and different contents in the database (everything running on Windows). For example, I ...
3
votes
3answers
543 views

Amazon AWS EC2 instance Exported to local machine

I have several Amazon AWS EC2 virtual machines that I created on AWS EC2. They were not imported, they were created there. I would like to export these machines in order to achieve local backups, ...
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0answers
50 views

Bootstrapping an EC2 HVM Instance Store Image

I currently have a process where I dd a disk, install CentOS onto it and upload to AWS. This works great for PV based images. I'm trying to use this same process to bootstrap HVM instances, but I'm ...
1
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1answer
471 views

What is causing `skb rides the rocket` errors?

On one of our busy (virtual) Debian 6 servers we are seeing a lot of messages in the syslog like this: kernel: xen_netfront: xennet: skb rides the rocket: 19 slots We are seeing some connectivity ...
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3answers
240 views

Long running VMWare snapshots are bad… but what about VMDKs on a ZFS\LVM snapshot?

The VMWare KB and multiple blogs state that long running snapshots are bad for both performance reasons and integrity. They have valid points. Granted this is not with ESXi but rather ...
3
votes
2answers
288 views

Postfix won't accept submitted email for other users on virtual domain

My employer has given me an email address, me@myemployersdomain.com. My employer's outgoing mail server only allows connections from inside their network (rather like an ISP who insists you connect ...
3
votes
2answers
240 views

Virtualized Storage for other VMs on ESXi host [duplicate]

This question is two fold. Part 1: Is it a bad idea to virtualize a storage solution and run VMDKs off of that as opposed to the original VMFS datastore. Essentially lets assume I have 2 TB worth ...
5
votes
3answers
288 views

Converting VMware VMs to Hyper-V

Our company is looking to try out Hyper-V as a server virtualization solution so I am looking for the most efficient way to test everything out safely. My plan is to make a snapshot backup of each of ...
0
votes
1answer
330 views

Preparing CentOS 7 as a virtual machine

I've removed the HWADDR from ifcfg-eth0 and touched /.unconfigured, but when I restart the virtual machine, HWADDR is not added back to the ifcfg-eth0. Is there something else we should be doing?
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0answers
41 views

Can't Create Win 7 VM with RHEL 6.5 VMM

I have a server running RHEL 6.5 that I primarily run VMs on it. The VMs I run on it are all Linux, with the exception of one that runs Server 2008 R2. Yesterday, I attempted to install Windows 7 as ...
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2answers
615 views

ESXi Hypervisor - Cannot get multiple VMs to connect to Internet

Pulling my hair for past few days over this. Can some VMWare ESXi expert help out? I recently decided to give ESXi 5.5 a try. Installed it, got connected through vSphere client, and created few ...
7
votes
1answer
400 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, ...
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0answers
42 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
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1answer
155 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 ...
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2answers
43 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
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1answer
339 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 ...
2
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1answer
118 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 ...
4
votes
1answer
367 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 ...