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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0
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2answers
154 views

Can't install Solaris 10 on XenServer 6.5 VM

I have XenServer 6.5 installed on a server, and i have been trying to install Solaris 10 on a VM, it just get into the boot screen of the installation ISO, i proceed with ENTER and then this message ...
1
vote
0answers
148 views

KVM bad IO sync performance in Linux guest

I'm setting up virtualized Ubuntu 15.10 guest inside Ubuntu 15.04 server using libvirt and KVM. Storage in host system: # mount | grep ext4 /dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro,...
4
votes
1answer
91 views

how to configure sendmail with multiple ssl certificates for multiple domains

I need to configure a server to host multiple email domains on a single IP, and thus install multiple ssl certificates. Miraculously, I have been able to get apache and dovecot to work with multiple ...
-2
votes
2answers
54 views

How could I share a dedicated IP amongst multiple servers?

I'm trying to split up a big server for a few people. They aren't going to run a website on it or anything like that but they want to at least connect to the server remotely. My hosting provider is ...
0
votes
3answers
172 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 ...
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votes
2answers
55 views

Methods for installing rpms as a non-root user using apt? [closed]

There is a webpage describes a method for installing rpms as a non-root user using apt. This page describes a simple method for installing the CMS software rpms as a non-root user using apt. A ...
0
votes
0answers
27 views

how to integrate sendmail virtual users + dovecot + full email address as username

I need to build an email server to process virtual users for several different domains using ssl on a single server. I know how to do that with a single domain using system users + sendmail + ssl + ...
0
votes
2answers
40 views

How to limit acess between two Azure VM with ACL?

I have two virtual machines for database and app server and I want the app server and only the app server to connect to the database server. These are in the same vnet. I am trying to do this by ...
2
votes
1answer
821 views

need some way to convert QCOW2 to OVF or open QCOW2 on WINDOWS

is there a way to convert QCOW2 to OVF? or is there a way to open an QCOW2 on WINDOWS (preferably free/open source)? the problem is that ubuntu's virtual machine manager was used to create the image ...
0
votes
1answer
56 views

Hyper-V VM moving went wrong

I had a little project to move our DHCP server from an old host to a new one. It looked dead simple.. but after I moved it manually ( copying vhd to new host and then configuring VM there) the Guest ...
2
votes
2answers
233 views

Virtual Machines in Windows Server 2012 Core Hyper-V going Off-Critical

I have a server running Windows Server 2012 Core Hyper-V. This server currently hosts two virtual machines (one Windows Server 2008 and one Windows Web Server 2008). Occasionally, without any warning, ...
1
vote
1answer
1k views

lighttpd virtual hosting configuration

I need help setting up virtual hosting in lighttpd. i have the lighttpd default webpage in /var/www/lighttpd dir and i have created other dirs for my other websites /var/www/web1.com/public_html and /...
1
vote
2answers
626 views

Openstack: Starting multiple shutoff intances

I am using Openstack Icehouse running on Ubuntu. After rebooting Compute node all instances that were running there will be in shutoff state. Is there way to restart them all at once? Only thing I ...
3
votes
3answers
24k views

Unable to ping between host machines and guest vms running on Vmware

In order to learn a bit about system administration, I've installed a Centos vm using Vmware on my local machine running Windows 7. Everything seems to be working fine since I can access the internet ...
3
votes
0answers
51 views

how to configuring secondary IP subnet that is directly routed to WMware ESXI main IP

I have a ESXI 5.1 which comes with a /29 Block IP (EX. 70.60.50.0/29) and the ESXi management address is frist usable addres 70.60.50.2, also i have a secondary /27 IP block (10.20.30.0/27) which is ...
0
votes
1answer
32 views

Files left over after removing KVM guest

Looking at this post I ran the following commands to remove a VM: sudo rm /var/lib/libvirt/images/centos01.qcow2 sudo virsh undefine centos01 --managed-save --snapshots-metadata But it looks like I ...
5
votes
1answer
1k views

WARNING KVM acceleration not available, using 'qemu'

Running debian (Linux Rick 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6 (2015-11-09) x86_64 GNU/Linux) Looking at my cpuinfo I can see I have vmx support: flags: fpu vme de pse tsc msr pae mce ...
1
vote
1answer
2k views

DCOM Authentication Fails to use Kerberos, Falls back to NTLM

I have a webservice that is written in Classic ASP. In this web service it attempts to create a VirtualServer.Application object on another server via DCOM. This fails with Permission Denied. However ...
1
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2answers
1k views

Running Vagrant/libvirt: trying to establish public/private networks

I'm running Vagrant 1.7 (from their official 1.7 packages) on Ubuntu 14.04 LTS and I'm trying to provision several private VMs and one public one. My Ansible provisioning scripts change all the ...
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votes
1answer
109 views

Can I run VirtualBox with Bridged adapters on EC2 and GCE

I have a Ubuntu 14.04 host on GCE and I want to run a VirtualBox VM on it. The guest is also running Ubuntu 14.04. I want the VM to be visible to other machines in my VPC and bridged adapter seems to ...
3
votes
5answers
3k views

Anybody get Xen/KVM/Virtualbox/VMWare/Hyper-V running on an EC2 instance?

Yes, I know, I would never do this for a production environment, but I'm just wondering if anybody has pulled this off. Google comes up pretty empty.
1
vote
1answer
6k views

VT enabled in BIOS but KVM failed to detect

I Have Dell OPTIPLEX 755 machine with VT enabled in BIOS but when i trying to check using KVM i am getting following error I am missing something? root@nova-controller:~# kvm-ok INFO: /dev/kvm does ...
0
votes
3answers
2k views

LXC container network/routing issues

I have been experimenting with LXC virtualisation in order to run virtual machines on a dedicated server, but am having trouble setting up the networking properly. I am using veth bridged networking, ...
0
votes
0answers
19 views

Database on Virtual Machine getting corrupt

Primary Domain Controller - Windows Server 2008 R2 Standard (installed on Physical Server) Secondary Domain Controller - Windows Server 2008 R2 Standard (installed on Virtual Machine i.e Vmware EXSi ...
0
votes
1answer
55 views

Re-add Machine to domain without Renaming it? Cloned Virtual Machine issue

So I have some old XP machines that are being kept around to run an ancient DOS based database we still need occasional access to. I decided to instead of dealing with all these old buggy machines to ...
0
votes
2answers
649 views

pages_sharing and pages_shared difference in ksm

Can some one please help me understand this. i am running kvm hosts with 5 vms on it. These are ksm driver statistics each page is 4KB cat /sys/kernel/mm/ksm/pages_shared 162221 cat /sys/...
0
votes
0answers
11 views

configure burst ram for openvz container

Can somebody help me out as to how can we set the burst ram for OpenVZ container using proxmox API. I tried using the following command but with no success: pvesh set /nodes/pve/openvz/{vmid}/config/ ...
2
votes
2answers
749 views

Any known fixes for Hyper-V host networking randomly stops responding?

We run several HP DL380 Gen8 servers as Windows 2012 R2 Hyper-V hosts. Randomly, they stop responding on the customer NIC (ie the one connected to the virtual switch). Customers are disconnected from ...
8
votes
2answers
14k views

Why does increasing “Number of logical processors” for a Hyper-V hosted VM increase that VM's performance?

To my understanding, virtual machines (assuming Relative Weight is equal) get an equal share of the processor. When the VM is given some processing time, it shouldn't matter if the VM is seeing a ...
0
votes
1answer
36 views

“eth0 does not seem to be present” on RedHat despite new MAC address

I created a RedHat VM (6.5) on an Ubuntu (14.04) server. I changed the IP address to something unique in /etc/sysconfig/network-scripts/ifcfg-eth0. I changed the MAC address for eth0 /etc/udev/rules....
3
votes
2answers
112 views

How to require all network activity to pass a KVM guest firewall before reaching the host?

Most of the information I've come across tends to set up a KVM firewall using a bridge connection. From my understanding it is a security risk if network traffic can reach the host without having to ...
1
vote
1answer
78 views

pfSense security: is the host of a virtual pfSense firewall accessible via ssh when the network interface has been assigned to pfSense?

Can the host of a virtual pfSense machine be accessed (via ssh) when the WAN interface is assigned to pfSense? Would the drivers need to be installed on the host, guest or both? Would it respond to ...
0
votes
0answers
39 views

Cant set extra option to VPS in proxmox 3.4

I am using Proxmox VE 3.4 to create an openvz container...i was able to create a vz container but i want to know are the advanced option like VNC, ppp, tun tap feature available in proxmox VE on any ...
2
votes
1answer
2k views

What is the host key of Windows 7 Virtual PC and where can you change it?

Does anyone know which key is the host key of Windows 7 Virtual PC and where I could change it to a different one? Before Windows 7 the host key was changed in the option menu of Virtual PC but the ...
1
vote
1answer
24 views

Distribute application as virtual machine but require external storage

I'd like to distribute a Web application as a VM image in order to make distribution, installation and maintenance as easy as possible for customers (virtual appliance). This image should include ...
0
votes
1answer
36 views

Confused about virtual network interfaces needed for network

I am relatively new to networking and have researched a lot about the topic however I am still confused as to what kind of virtual set-up I need. I have linked a diagram of the network over here: ...
1
vote
3answers
224 views

Learning about Running Ubuntu Server

I want to learn about how to run a Ubuntu Linux Server. Nothing too advanced. I simply want to learn about the basic setup and operation of a server to do the following things: SVN Apache Web Server ...
5
votes
4answers
8k views

Possbile to port a KVM VM to Amazon EC2?

We currently have our own servers that have multiple KVM guests. If we ever decide to move to the Amazon EC2, would it possible to simply copy the VM image over or would I need to begin reconfiguring ...
1
vote
1answer
61 views

Windows DHCP MAC-Range to Scope allocation

I wonder if there is any options to map a specific Range of MAC addresses to a specific DHCP address scope. The thing is, I want a specific scope for address allocation to bridged Virtual Machines (...
7
votes
8answers
7k views

Virtual machine image compatibility between VMware Server and VMware Player

I'm trying to minimize the number of different product versions used on my PC's both at work and at home. So far I have a mixture of: VMware Server 1.0.7 VMware Server 2.0.2 VMware Player 2.5.3 ...
4
votes
4answers
249 views

Which VM needs more resources?

I have a physical server which runs 8 virtual machines with virt-manager and kvm. Since one VM is not needed any more, I want to give the remaining virtual machines more resources. I'm looking for ...
-1
votes
1answer
803 views

ovs-vsctl: “eth0” is not a valid UUID

I'm trying to setup an open v-switch inside my Ubuntu 12.04 Server VM. I have created three interfaces for this VM and I want to create a port mirror inside of the VM using these there interfaces and ...
1
vote
3answers
88 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
69 views

VMware Horizon View 6 Connections Fail w/ Changing Server Names

One of our Horizon View machines has intermittent issues connecting to its host via PCoIP. I do not have extensive Horizon View experience, but when looking through connection logs, I noticed that ...
0
votes
1answer
107 views

Is it a bad idea to virtualize DC, DNS and DHCP?

I'm planning to set up a small environment with a Domain Controller, DNS and DHCP using Windows Server. My question is in other words not for a huge world-spanning enterprise network solution (and I ...
1
vote
4answers
195 views

Virtualization that is distributed on workstations or on a big central server for testing and documentation?

We are contemplating a push for employing virutalization for our test and documentation group to help manage consistent test and documentation environments. We were looking at choosing either a couple ...
0
votes
2answers
1k views

setting CPU cache size and model for KVM guest

Is there any possibility to create a custom CPU model for KVM Linux guests, or at least to modify parameters such as cache size and model name? I know I can set CPU features, topology and pinning and ...
3
votes
2answers
1k views

Ubuntu LXC 14.04 Error

I had installed LXC in ubuntu 14.04. I had used an existing template and created a VM by executing the below command. /usr/share/lxc-templates/lxc-ubuntu -p /lxc/vm0 After the installation getting ...
0
votes
1answer
291 views

Do any hypervisors support vTPM?

I am trying to use vtpm to provide remote attestation for VMs, but I do not know what hypervisors support vtpm. Does anyone know?
2
votes
2answers
147 views

Is Server Clustering Right for a 25 Person Business?

Company owner wants high availability as even a 1 hour downtime kills billable revenue for 20 accountants. I've got a one year old Dell PE T110-II running 2012 Standard and an ancient PE 840 running ...