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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92 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 ...
0
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1answer
142 views

Number of CPU cores versus frequency of cores in hypervisor

I plan to build a server mainly for running virtual machines. I will use mainly Qemu(with KVM support) and Virtualbox as hypervisors. There will be dozens of virtual machines and they do not execute ...
1
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0answers
118 views

Cant connect to server in Hyper-V Manager

I'm trying to connect to my server (running Hyper-V Core) with Hyper-V Manager in windows 10 and it will not connect, putting out the error: You do not have the required permission to complete ...
0
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0answers
304 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 ...
1
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0answers
85 views

Hyper-V Host Requirements [closed]

We are considering consolidating three lightweight physical servers onto one machine using Hyper-V. I've received a quote for an HP ML310e Gen8 with the following specs: 1 Intel Xeon E3-1220V3 ...
1
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0answers
95 views

How to configure HW, OS, network for virtualization with VMDq and SR-IOV features [closed]

I have: SUN X4100 M2 Intel Ethernet Adapter E1G42ET (VMDq and SR-IOV supported) Linux Ubuntu 14.04 Server (host machine) May setup 15 KVM as hypervisor I want some virtual guest machines (linux) ...
1
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1answer
31 views

Virtual hosts instead of separate IPs?

I've been wondering if it's possible to host multiple applications using a single port on one IP address. I'm meaning a similar method to Apache Virtual Hosts where you can assign domains/subdomains ...
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1answer
34 views

Config differents external proxy to every VM with iptables

I have a virtualization server with one IP and 5 VM. To get internet access and ssh access in every VM I do this in -------------/etc/network/interfaces------- auto vmbr2 iface vmbr2 inet static ...
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0answers
68 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 ...
0
votes
1answer
34 views

Lean virtualization solutions [closed]

I am looking for a lightweight way to run a linux kernel guest under an OSX host. I need only to be able to boot a very minimal linux kernel, start a single process under it, and communicate with that ...
4
votes
1answer
207 views

ESXi 5.5 CPU Sanity Check

In the BIOS of my server I have 2 X 2.26 quad cores, however in VMware I only see 2 cores per CPU ? Surely this isn't right? Processor Cores and Processor sockets should show as below: ...
11
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4answers
2k views

What happens when a physical machine fails in a virtual environment? [closed]

I'm getting started with virtualization so bear with me. In virtual environments applications run in a hypervisor's layer. So a single physical machine could have many virtual machines on it running ...
1
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0answers
67 views

ESXi 5.5: more than one hour to power up a Win2K VM

Around one year ago I installed an ESXi 5.5 to virtualize an old physical Windows 2000 server that, unfortunately, cannot be easily upgraded/migrated/replaced. Main ESXi datastore was created on top ...
0
votes
1answer
199 views

Use graphical DomU (X11 for Linux, regular UI for Windows) from Dom0 without any GUI on Dom0

I am creating a Xen (para)virtualization setup, with two DomU's: a Windows 10 client install, on HVM, and an Linux client install with X11, on PV. Dom0 is a non-graphical Debian install. So far I have ...
1
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1answer
528 views

Best options for KVM/qemu/libvirt VM migrations without shared storage

My team has recently been tasked with improving the virtualization infrastructure at the company and one thing we're looking into doing is speeding up migrations. We use local storage only on all VM ...
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1answer
280 views

VMware ESXi 6.0 DirectPath I/O PCIe Device Not Working

I'm attempting to attach a NIC to a specific VM on my basic ESXi 6.0 setup. DirectPath I/O should allow me to do this, and the machine I'm running ESXi on does support VT-d (Dell Optiplex 990 with an ...
1
vote
1answer
259 views

Salt minions keep losing connection to master

I'm testing Salt. I have a simple test setup of 3 VirtualBox VM's -- with salt-master running on one of the machines and salt-minions running on the other 2 VM's. I can start either of the salt ...
0
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0answers
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 ...
0
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1answer
36 views

request ip from dhcp

I'm automating a deployment on a vmware esxi host using some custom shell scripts and I would need to know in advance the IP this VM is going to get from a DHCP prior to it being installed. I know ...
1
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2answers
358 views

Can't connect to a Vagrant/VirtualBox virtual machine

My ultimate goal is to install Puppet on a Vagrant CentOS box. The installer is tells me to connect to https://localhost:3000. My host is Windows. To troubleshoot why I can't connect I started ...
0
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1answer
32 views

VMware esxi bandwitch monitoring per VM

is there a way to monitor monthly bandwitch usage per VM on VMware ESXi. My server is in colocation and unfortunetly i can't use SNMP on virtual machines or network equipment to do that.
1
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0answers
35 views

Hyper-V Replication Failures

I have 2 sites with failover clusters running Hyper-V 2012. When I started this job the production website (site A) was on Server 2008 running Coldfusion 9, SQL 2008 all on one machine. I upgraded ...
2
votes
1answer
175 views

What benefit is there to using Vagrant for AWS resource management when using Ansible for provisioning?

I understand that Vagrant is a tool to create and manage virtual machines; and that Ansible is a tool to configure one's machines (virtual or otherwise). However, Ansible's AWS modules are capable of ...
0
votes
0answers
251 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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0answers
22 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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votes
2answers
93 views

Trouble with NTP Sync between ntp servers and VMs

I have many VMs on production that run vmware, with vmtools running and the sync between ESXI and hosts is disabled. I run ntp client on all hosts, the OS of hosts is RHEL. The problem I have is that ...
0
votes
1answer
259 views

Fedora 22 Server on Hyper-V: Cannot reach httpd

I have created a WinS2012 Hyper-V Guest running Fedora 22 Server. HTTPD is running on the guest and listening on ports 80 + 8008. I have checked selinux - both ports are allowed for httpd. I can get ...
1
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2answers
192 views

How to upgrade Xen with minimal risk and downtime?

I've recently noticed that one of my server is running on a pretty old version of Xen: $ dpkg-query -l | grep xen ii libc6-xen 2.11.3-4 Embedded GNU C ...
1
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1answer
22 views

Checking for disk failures and issues in a VM

If you host with a provider who runs a RAID 10 or another RAID based system and your in a VM. Are you able to check for disk failures or RAID failures from within the VM or does it require host based ...
1
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0answers
75 views

Hyper-v virtual machine acting as two separate vm's

I have a Hyper-V virtual machine (vm1) that has two separate instances of itself. I can log into what should be the same VM (vm1) through Hyper-v and RDP (Remote Desktop Connection) with the same ip ...
0
votes
1answer
130 views

Linux virtual server, direct routing (LVS/DR) on VPN

Is it possible to set up Linux Virtual Server on VPN? The real servers should lie on the same LAN segment. I want the real server to be a non-LAN server connected to the Internet. Could it be ...
0
votes
1answer
300 views

Finding correct IOPS to set limit with ESXi 5.5u2 and vSphere

We're running an ESXi 5.5u2 hypervisor that has a mirror of 2 15k SAS drives with a couple of VMs inside and we noticed some services become briefly unreachable if another VM is using all the IO. So ...
1
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1answer
448 views

Is a single instance VM with a SLA possible in Azure with 3rd party software?

I understand that single instance VMs aren't eligible for an SLA in Azure. For the SMB customers who have important applications that weren't built well enough (Sage 50 in my case) to allow you to ...
0
votes
1answer
43 views

Bloomfield CPU without Intel VT-x

According to my research an Intel Bloomfield CPU (more specific: a i7-920) should support Intel VT-x technology ...
1
vote
1answer
625 views

Can I migrate a VM between vCenter servers in linked mode?

Right now I have two separate vCenter servers (one older, one brand new), each managing 3 clusters of hosts. I will eventually need to get 300-500 VM's from the old clusters to the new. If I put the ...
26
votes
8answers
5k views

Consumer (or prosumer) SSD's vs. fast HDD in a server environment

What are the pro's and con's of consumer SSDs vs. fast 10-15k spinning drives in a server environment? We cannot use enterprise SSDs in our case as they are prohibitively expensive. Here's some notes ...
2
votes
1answer
1k views

Migrating AWS EC2 m3.large to m4.large

New m4 instances look much better than previous m3 instances (regarding performance and pice), so I'm going to make them as default instances for our cloud services. These services ran before on m3 ...
7
votes
1answer
691 views

Hardware requirements for 100 virtualized high performance Windows 7 desktops?

We are debating whether to add Client Hyper-V or VMWare Player Pro to new Windows 10 desktops later this year and have our developers run their developer tools in a Windows 7 VM on their local ...
1
vote
2answers
509 views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
0
votes
1answer
23 views

Is it possible to transfer OpenVZ VPS image to XEN platform?

I'm having a memory related issue with my vps on openvz platform and I guess that my hosting provider is overselling RAM. So, I'm thinking to move on a xen platform since ram cannot be oversold but I ...
0
votes
0answers
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 ...
0
votes
0answers
31 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 ...
2
votes
0answers
33 views

Security concerns w/ physical vs virtual network gateways [closed]

I am in the process of setting up a private network that uses a gateway system for access to certain services on systems behind the network, e.g. ssh, ftp. I have some experience using virtualized ...
0
votes
3answers
165 views

Booting hypervisor and network stacks using PXE Server

I am trying configure server using PXE boot. I successfully installed ESXi hypervisor using PXE and would like to know if there is a way by which I can specify Virtual machines at the time of PXE ...
0
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0answers
137 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: ...
0
votes
1answer
482 views

How do I safely clone a Linux VM in Hyper-V?

This is a home lab, so nothing critical. I have a base Linux ISO I'm installing for all my VMs, but the install takes a long time, and even once it's done, I still have to go install a ton of updates ...
1
vote
2answers
153 views

Setting up emergency console access with xen

On Gandi (or other providers) you can activate an emergency console to your VM. It binds a SSH channel to a temporary IP and port. I have my own server running on xen. I would like to implement an ...
3
votes
2answers
4k views

Install windows 2012 R2 over KVM-virtualizaton

I'm trying to install Windows Server 2012 R2 over linux KVM-virtualization. The installation process stops and requires drivers to continue. I'm trying with virtio drivers from fedora but doesn't ...
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votes
1answer
170 views

How do i find the overcommit ratio for CPU on a KVM host or for that matter on any hypervisor?

I have a host and I have installed KVM on it.Now I need to know how much overcommiting of resources it allows, CPU, memory. Is there some command to get the ratios or it all exists in theory and no ...
1
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0answers
83 views

Datastores Occasionally Disappear on vSphere Client

I'm currently running several virtual servers and connecting to the vCenter using the vSphere Windows client. We're connecting with to a datastore on another server which has a separate folder for ...