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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Max CPU load in *nix

I am running an Ubuntu 12.04 server via a virtual machine (it is running on vmware's ESXi hypervisor) but I am not convinced it has full access to the 8 CPUs that I have assigned to it. My physical ...
2
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2answers
753 views

Virtualizing Firewalls/UTM

So Sophos UTM (Astaro Gateway UTM) can be virtualized in Hyper-V, VMWare, vSphere etc. Now I'm new to virtualization, so am wondering how the networking would be configured in this situation. ...
2
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2answers
2k views

How to set up internal routing between virtual interfaces and real ethernet interface (Linux)

I have a Linux box with one real (as opposes to virtual, a.k.a. aliased) Ethernet interface I can use (eth0 is used for other purposes - can't use it, nor can I add more NICs). Say it's eth1 I need ...
2
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3answers
708 views

How do I host multiple servers on Hyper-V with only a few public IP addresses?

I have a dedicated server, which is currently running Windows 2008 R2 Web edition and VMWare Server. I am upgrading to Windows Server 2008 R2 Standard with Hyper-V. Once upgraded, it will have 24GB of ...
2
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2answers
345 views

Manage Hyper-V Server 2008 R2 from same machine

Is there a way to manage Windows Hyper-V Server 2008 R2 from within itself? E.g. not remotely. I'd like to be able to manage VMs as well as connect to and work with a a VM in full screen mode. This ...
2
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2answers
490 views

Can I safely create new Virtual Machines from copies of VHD without sysprep?

I have VHDs of Web Servers (IIS) and Database Servers (SQL). Can I safely copy/paste the VHDs and create new Virtual Machines from those without a sysprep? Questions: The machines will have ...
2
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3answers
4k views

Convert directory to QEMU/KVM virtual disk image

I have a directory filled with data at /var/backups/disk1 that I want to convert into a virtual disk image which I'll then be able to boot using QEMU or KVM (the directory contains the file system for ...
2
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4answers
3k views

VMware NAS/iSCSI recommendations - smallish organization

I have two VMware servers - ESX + ESXi. Two backup NAS boxes. The current NAS boxes are low-cost and unsuitable for running VMs from. Support NFS only. Slow. My plan is to have a dedicated iSCSI/NAS ...
2
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2answers
935 views

What does Linux Server Virtualization mean?

Today, I went for an interview and I was told that for a few months, I will be doing Linux server virtualization. I kind of know what virtualization means since I use Virtualbox but I'm not entirely ...
2
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1answer
66 views

Which Hyperviser Solution for Java Applications?

Do you have any comment which of the available hypervisor solutions is best suited for Java applications? i.e. provides higher performance along with Java virtual machine? Our machines are mid-level ...
2
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4answers
2k views

CentOS or OpenSolaris for Xen dom0?

I would like to play around with Xen with the intention of eventually running a bunch of different services on separate virtual machines (partly just because I can), and have the possibility of trying ...
2
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4answers
2k views

Recommendation for RAID in Virtual Server

We’re planning on going virtual from this point forward and our plan will be 1 server, 1 task, so while we are a small company we're going to have a high number of servers for our size, but this ...
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5answers
2k views

Virtual PC - Display Issue with Ubuntu Server

I just did a clean install of Ubuntu Server 9.04 in Virtual PC on the Windows 7 RC, and it seems to be having a bit of an issue with the virtual machine's display adapter. I've tried setting a VGA ...
2
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3answers
2k views

DRBD / Heartbeat on Virtual Machines

Does anyone have experience configuring drbd with heartbeat between 2 virtual linux machines (VMWare Infrastructure)? The problem I am running into is that heartbeat likes multiple data paths to see ...
2
votes
6answers
6k views

How to improve Hyper-V performance

I have a windows 2008 (RC2) server running Hyper-V with all of my company's virtual machines. Most of the machines are used to run Continues integration and test environment. Although each machine ...
1
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1answer
70 views

VPN SSTP windows client can not ping or connect to VPN server but it can talk to every other PC on the local LAN that VPN server is on

So I have an SSTP (with native Windows client) working fine in a sense. My windows client's local IP is 192.168.10.11 , so its local network is: 192.168.10.x The Remote VPN server is behind a router ...
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2answers
4k views

Can not boot CentOS VM using VirtIO in KVM

I converted qcow2 image to raw and changed I/O bus to VirtIO for a VM. now I can't boot that VM. I Installed VirtIO driver with following command: mkinitrd --with virtio_pci --with virtio_blk -f ...
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1answer
566 views

How do I measure and compare disk performance of my Hyper-V Windows VM?

I'm not sure whether this sounds stupid or lazy, but I'm really not sure. I have a problem with the performance of a VM setup (2008R2-64bit Hyper-V running a 2003R2-32bit Windows server) and I'd like ...
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2answers
613 views

virt-manager doesn't show list of local KVMs but virsh does

When I open virt-manager GUI it doesn't show list of KVMs but virsh does. how can fix it?
1
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1answer
585 views

Difference between Intel-VT and AMD-V

What is the difference in hardware between Intel-VT and AMD-V? I am currently reading Virtual Machines: Versatile Platforms for Systems and Processes chapter eight and Intel-VT is mentioned there but ...
1
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1answer
713 views

OpenVPN routing for OpenVZ containers

I am trying to make OpenVPN tunnel accessible for all OVZ CT's running on the host. I have initialized the tunnel devise on the host server to remote VPN server. Although I have PING response from the ...
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1answer
1k views

setting up a high speed load balancing server cluster - web/db/NFS

I'm looking for advice on the best way (mainly in terms of hardware) to set up a high speed load balancing server cluster on a budget (say £2,000 - £ 3,000) to host web services behind a single ip ...
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2answers
131 views

Running 2 virtual hosts side by side interactively - no guests, just hosts

Are there any virtualisation products out there that let me run Windows XP and Linux side by side and interact with both of them at the same time without logging into them from another computer. i.e. ...
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2answers
238 views

Is the # of CPUs on a virtual machine always meaningful?

On a virtual machine, if cat /proc/cpuinfo tells me that there are 4 CPUs, is this just as meaningful as if it were bare metal? Should I configure my server (for example, # of Nginx or Apache workers) ...
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4answers
509 views

OpenVZ Host is the source IP address rather than actual web surfers?

I have a problem with my VPS. Simple example: <?php $ip = $_SERVER['REMOTE_ADDR']; Echo "User IP : " . $ip; ?> That code should display the user IP address, but it's showing the HN IP ...
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2answers
3k views

How do I know if my Xeon Processor supports hardware virtualisation?

I've been scouring the net (mainly the wikipaedia lists and intel's site. I even pulled out the datasheet for my processor) but I can't seem to answer this question. Does my Xeon support hardware ...
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2answers
181 views

What would be the best virtualization solution for this particular use-case?

I do software (mostly web) development, and I work alone, so I have to cope with a lot of sysadmin-type work, in order to setup different stacks of web/application/database/source-control servers, let ...
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2answers
632 views

Configure Windows Routes for VPN

I have a Virtual PC/VMWare machine that runs Windows Server 2003. This virtual machine uses an IPSec VPN client program to connect to a remote network. I configured the virtual machine to have 2 NICs: ...
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1answer
1k views

ZFS virtualized on an LVM volume

We've got some large SATA disks kicking around, and I've been toying with the idea of throwing them in a KVM host and installing a FreeNAS VM to manage them. I'd be adding these via LVM to the host, ...
0
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1answer
41 views

Two IP addresses one network interface and virtualization

I have a Debian [H] host server with one network interface, configured like this (/etc/network/interfaces): auto lo iface lo inet loopback auto eth0 iface eth0 inet static address xxx.yyy.zzz.77 ...
0
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1answer
98 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: ...
0
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3answers
649 views

How to find out the virtualization type of an linux VPS?

Having access to an VPS, i need to know which type of virtualization it is running from the terminal. How can i know if it is OpenVZ, Xen, KVM, etc?
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0answers
115 views

opensm reports - Invalid requested MGID. What does it mean?

I've been working on a virtualized SR-IOV infiniband interface under Xen. If I run the OpenSM daemon under Dom0 IPoIB appears to work in the passed through VF. However, opensm starts using a lot of ...
0
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1answer
475 views

How can I connect two virtual machines in vSphere ESXi 4.1?

There is documentation available for version 5 (I am running 4.1 per the title), but following the directions raises the error: Incompatible device backing specified for device '0'. upon ...
0
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3answers
145 views

What is the purpose of a Physical Standalone Server

What is the purpose of a physical standalone server Vs a server which hosts several logical servers? I am from a development background and constantly build sever client - server systems. However, I ...
0
votes
2answers
479 views

Which hardware to VM ratio for Build-Server virtualization?

After a few comments and answers and thinking, I hope I can now add a TL;DR : If I want full performance(a) and (simple) HW failure redundancy, does it make any sense to go for a virtualization ...
0
votes
1answer
394 views

Can I set noatime for my XEN guest OS partition? Will it work?

I have a VPS in cloud environment based on XEN Virtualization platform. /etc/fstab looks like that: LABEL=PRGMRDISK1 / ext3 errors=remount-ro 0 0 As far as I know IO can pretty ...
0
votes
1answer
100 views

Need help configuring apache with 3 different hostnames that support wildcard subdomains

I have a single physical server. I need to set it up so i can have 3 different domains on it. Each one of these domains needs to be able to support wildcard sub-domains. ...
0
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3answers
165 views

I have some questions regarding VPS and what I should order? [closed]

I have a classifieds website, with around 50thousand ads put in every month. I don't have any more statistics than this. I use PHP and MySql currently, and I am about to install Sphinx or SOLR on ...
0
votes
2answers
231 views

Why does my Fedora HD come up as 124GB when it was created to be 700GB in Hyper-V?

Any ideas? How can I tell fedora to use 700GB, and do I have reformat to do this? Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_computer-lv_root 124G ...
0
votes
2answers
2k views

Converting a live server to XEN domU

What are the steps of converting a live server as a XEN guest? Here's my understanding of the process, please comment if you see any flaws with such thinking. Install a xen guest kernel that would ...
0
votes
2answers
3k views

Cannot communicate between two VM on the same physical machine using NAT IP Addressing

I have one physical machine, on it there are 2 virtual machines. One of the VM is the application machine, another is the db machine. All are running Windows XP. I am using Sun Virtual Box for ...
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1answer
41 views

KVM Server error

I have installed KVM server in Centos 6.4 and i have created gluster storage pool in that gluster storage pool i have installed some linux and window VM's i have assigned 1GB RAM and 20 GD virtual ...
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votes
1answer
120 views

Where can I learn fundamentals about hypervisors in context of other hardware virtualization solutions? [closed]

I am interested in learning more about hardware virtualization, with a specific focus on hypervisors. I am competent to manage a server and would be able to configure an environment to work using ...