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 views

Keyboard not working on Oracle Virtual Box [on hold]

My Base OS is Windows 8.1 , I have installed Oracle Virtual Box and Create one VM and mounted RHEL7 ISO file. Once I start the VM, keyboard is not working on the host? What might be the cause??
0
votes
0answers
10 views

Cannot find the process locking a Virtual Hard Drive on a Network Share

I have a VHD that is on a network share. Normally all anyone had to do was mount it through Disk Management and they could access it. The last few days though I have been getting the following error....
-1
votes
0answers
14 views

How do I install OpenVZ on remote server?

I have dedicated server which I would like to virtualize (create several VPS via OpenVZ), I dont have physical access to the server, I have Debian Jessie installed on the machine and the machine has ...
-2
votes
0answers
31 views

hyper-v restore to wrong virtual machine [on hold]

I am using hyper-v on windows 8. I created a new virtual machine using the NEW VIRTUAL MACHINE WIZARD. I chose option to "use an existing virtual hard disk file". However I overwrote the wrong vhdx ...
0
votes
0answers
24 views

Best way to avoid server outage for gaming company [closed]

I recently moved to a company that provides gaming solutions for Bingo Halls across the globe. We have handheld game devices that run our gaming apps that connect to Windows Servers (2008). Each bingo ...
0
votes
1answer
21 views

Hyper-V: Virtual machine connected to external network has no access to it [on hold]

Setup: Windows Server 2016 Tech. Preview with enabled nested virtualization (Server 1) runs a VM with another Windows Server 2016 (Server 2) which in turn runs a Windows 10 VM (Workstation). On ...
0
votes
0answers
4 views

VMWare Shared Storage not Syncing File Changes [migrated]

So, I am experimenting with a couple VM's. Both are fresh Ubuntu 16.04 installs, no updates, no vmware tools. Both are able to read and write to this SharedTest.vmdk, while both are running. What I ...
0
votes
0answers
15 views

Direct HTTP packets for an specific domain to a guest virtual machine [duplicate]

I got a situation of a (Windows server 2012 as host) and a (CentOS 6 as guest) using Virtual box. I have 1 Static IP Address assigned to the host. the host is hosting multiple sites using different ...
0
votes
1answer
24 views

How does backup deal with existing snapshots in snapshot based backup

I have a question regarding backups and VM's that contain snapshots. If i have a VM running in vmware with 2 snapshots and a snapshot based backup runs overnight, will it delete all of my snapshots or ...
2
votes
3answers
132 views

KVM-Host lost connection to Storage

I would really appreciate some advice on how to fix this. I have a Debian KVM-Host with 9 Debian VMS running on it. The virtual machines are running on my little Storage via iSCSI. Now, my switch ...
0
votes
1answer
27 views

postfix user unknown in virtual alias table [duplicate]

first of all - i am still on a beginner level. As the Topic say i have problems with my mailserver (postfix 2.11.3) on Debian Jessie. It is a VPS with two domains and each has his own IP. When i ...
5
votes
2answers
320 views

What is the difference between containers and virtual machines?

I want to comprehend all that differ a container from a virtual machine. A filesystem with all operational system can be observed for both of these virtualization methods. But in a Docker container, e....
0
votes
1answer
43 views

Postfix Virtual Domain - mail is send by second server [duplicate]

i setup postfix on a VPS with two domains (each one with own ip) domain1 - 194.xxx.xxx.1 domain2 - 194.xxx.xxx.2 when i send a mail via domain2 - i am getting dmarc reports that the mail uses the ...
1
vote
0answers
29 views

How to limit the block usage on a Thin Provisioned VMs ( VMware)

This question is similar to Best practices for thin-provisioning Linux servers (on VMware) However my question is a touch different. We have P2Ved quite a few servers (win/linux) and we needed to ...
0
votes
1answer
29 views

Xrandr error when accessing Debian VM over VNC

I have Debian 8 with XFCE running on vmware virtualization. If I work on the console of vSphere no problems. If I connect over VNC (thighVNC) using "my-hostname:1" I have some problems (I guess the ...
0
votes
0answers
26 views

Server 2008 R2 Hyper-V VM blinking curser

After installing MS patches, my VM on a Server 2008 R2 Hyper-V boots with a blinking curser. I suspect to have issues with the boot and need to run a boot repair. However, I am unable to boot from the ...
0
votes
0answers
11 views

Create sparse VM image on OSX

I have a VirtualBox image (created by Vagrant) that I would like to convert into a sparse VMDK. libguestfs (virt-sparsify) doesn't support OSX Tried running libguestfs in Docker using libguestfs-...
2
votes
0answers
25 views

Rebuilding VHD RAID array

We have a Dell PowerEdge R420 with a PERC H710 mini RAID controller card. The server has six physical disks split over two arrays; one RAID-1 array for the OS and one RAID-10 array for the data. This ...
1
vote
2answers
53 views

Replacing failed hardware in a hyper-converged cluster node [closed]

Is it possible to replace failed physical components (such as disk, RAM, or power supply) in a hyper-converged node (such as VXrail or Nutanix) without taking the node offline?
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votes
1answer
67 views

Kernel panic - not syncing: Attempted to kill init ( using qemu for a Rasbian ARM image) [closed]

I am using qemu 2.6.0 on my ubuntu 14.04 x86_64 PC. I want to emulate rasbian -- A Linux destro based on ARM Debian for Raspberry Pi. Here's the settings when using qemu /usr/local/src/qemu-2.6.0/...
-1
votes
2answers
52 views

Unable to connect two PC's in a private Network [closed]

I have the following setting: VM1 (VMNET10 - private, without any other connection to the host system or the internet) VM2 (VMNET10 - same here ;)) Now i want to connect each other. I can ping ...
2
votes
0answers
15 views

Why is an unassigned adapter showing up in vSwitch “Teaming and failover” order?

On two out of three ESXi 6 hosts there is an unused adapter showing up in the Teaming and failover section of a vSwitch even though that adapter is not assigned to the vSwitch (see screenshots below). ...
-1
votes
0answers
20 views

Run same virtual machine twice simultaneously from the same base snapshot

I would like to have a base snapshot and then launch several virtual machines from it simultaneously. These machines have a short lifetime and then shutdown, there is no need to save the changed to ...
0
votes
0answers
8 views

Recommended Hardware for a school lab LTSP [duplicate]

currently I'm working on a project for a elementary school's computer room/lab. They have a lot of old computers (AMD Athlon CPU f.e.) with WinXP. The teachers are afraid of using that insecure ...
0
votes
0answers
17 views

How to Monitor all virtual host Web traffic in Real-Time in one console

I want to monitor web traffic from each domain I have installed on my dedicated server. All my domains were added in apache as virtual host. I need each domain Google bot hits only basis, and human ...
1
vote
0answers
65 views

Export or Convert Hyper-V VM to OVA/OVF

I can't find (Google) any documentation on how to export or convert hyper-v VMs to OVA or OVF. The hyper-visor is Windows Server 2012 R2 Standard. The results from Google only point to System Center ...
0
votes
2answers
42 views

How to make a VMware machine to use the proxy of the host?

I am running shadowsocks over my host computer (which is Windows). And I am running a VMware virtual machine with Ubuntu Linux on that. How to set up this Vware/Ubuntu to use the Shadowsocks of my ...
0
votes
0answers
8 views

Windows 10 Activation and VMs [duplicate]

I've just bought a laptop that came with Windows 10 preinstalled. I'd like to reformat it, install Ubuntu, and then reuse the Windows 10 license in a virtual machine. But it seems that you can't ...
1
vote
1answer
29 views

Setting up a virtual server with multiple monitors

We have a client who currently has a server running on old hardware. They want to move this server to another machine and virtualize it to make it more portable in the future (AFAIK, they use a non-...
-1
votes
1answer
34 views

How to mount a block device with no partition table in Windows

The filesystem starts from sector 0. I have an encrypted container on the host and want to pass decrypted media to the windows guest as a single physical device that is intended to be mounted on guest....
0
votes
0answers
86 views

How to install Windows on a OpenVZ SolusVM VM

So I have just installed SolusVM (Master) on a VPS and added a dedicated server as a node to the master. And have also added an IP block to the panel. I have successfully created a CentOS VM through ...
0
votes
1answer
35 views

vcenter isn't seeing open vm tools

Centos 7 DVD is packaged with open vm tools. But this is what I see in vCenter: VMware actually recommends running Open VM tools. When I tried to install vmware tools I got this message: open-vm-...
1
vote
1answer
22 views

Upgrading Debian Squeeze with OpenVZ to Debian 7/8 with LXC

I have a few servers which are running Debian 6 (Squeeze) which uses OpenVZ to run containers. The containers are some Debian 6 and some Debian 7. Squeeze was the last version of Debian to support ...
0
votes
0answers
18 views

No network on XenServer VMs

I'm trying to set up a CloudStack private cloud with advanced networking and I seem to have navigated most of the hard part. The problem now is my system VMs are not able to access the public gateway ...
0
votes
1answer
24 views

virsh command that displays the cpu and memory consumption?

I want to know if there is a command virsh to display the cpu and memory consumption of each machine virtual. I created the virtual machine using KVM in ubuntu system.
0
votes
0answers
60 views

Assign 2 IP addresses to one virtual machine

I would like to assign 2 IP addresses to one virtual machine but cannot make it working. I have IP MAC 151.180.39.138 02:aa:cc:73:b1:39 78.132.120.30 02:cc:aa:79:fb:e7 /etc/...
0
votes
0answers
16 views

Having different two different public IPs or Xen guests

I'm using XenServer and CentOS. I have successfully configured two Windows Server guests and they both work properly. On the host machine, I have xenbr0, xenbr0:0 and xenbr0:1 (for two different IP ...
0
votes
0answers
17 views

QEMU image format

I have an image with .qemu format. I looked here to see QEMU supported formats but there is no .qemu. Is.qemu equal to raw? Thanks
0
votes
0answers
22 views

slow shared folder file append operations (VBox/VMware/CIFS)

The next problem occurs in both Vbox and VMplayer. I am having windows 10 as HOST, and debian 8 as guest. I am developing in both PHP and nodeJs, my plan is to use HOST windows 10 as development ...
1
vote
1answer
28 views

LXC (proxmox) JBD high (100%) IO utilisation

We have a dedicated server running a number of smaller guest VMs containing for example, HTTP server, MySQL and some real-time applications. However we find that JBD inside the guests are often ...
1
vote
2answers
53 views

How to balance elasticsearch (java) on a very powerful machine?

On a 16 core XEON class, 128GB RAM RHEL server I want to deploy elasticsearch. What is preferable performance-wise? Have a huge elasticsearch process to use all resources on the native host? Break ...
-2
votes
1answer
90 views

Provision a virtual server within CentOS 7? [closed]

This may be a really silly question, but I currently have a dedicated server and I have an incredible amount of redundant hardware. I'd like to be able to provision virtual servers running various ...
0
votes
0answers
26 views

Hypervisor vs Virtual Machine Monitor

What is the difference between a Hypervisor and a Virtual Machine Monitor? Mostly it is referred as the same but today I started to read a book in which they are different things. After about two ...
0
votes
0answers
32 views

Virsh cannot connect to Xen server

I have installed the latest version of Xen server 6.5. Now I want to connect to it with virsh (libvirt-bin). When I do this I get the error error:end of file while reading data: sh:nc:command not ...
0
votes
0answers
38 views

Is there a way to clone/template linux VMs on Hyper-V

I've seen how you can do it with System Center but we don't have a System Center license and there is no plans to get one. I guess I could install a trial for the 60 days just for this purpose but I ...
0
votes
0answers
16 views

Virtual Machine to Virtual Machine Speed on Same Host and Network

I have two virtual machines on the same esxi host, the same network and same virtual switch. I am testing bandwidth between the two servers but I can't seem to pull more than 900Mbits. I am using ...
0
votes
2answers
46 views

I need to set up a sftp server, that could use different keys, and use different directories for the same login, depending on the ip used

I got a problem, that I cannot solve myself. I tried to google it, but no satiscactory solution that i could find. I have a server that is available with let's say 3 different IP addresses (A,B,C), ...
1
vote
0answers
25 views

What is the network connection speed between two containers communicating via a virtual bridge running on the same host?

Does a virtual bridge (added to /etc/network/interfaces) limit the transfer speed of data from the memory of one lxc/docker container to another? For example does the memory throughput drop to that ...
2
votes
1answer
28 views

libvirt kvm qemu virtual machine - hard code domain-id?

Is there a way to hard code the domain-id of a virtual machine kvm guest? I tried adding an id attribute to the XML configuration via virsh edit name And I also tried to edit the XML directly ...
1
vote
0answers
50 views

Can't use unallocated space on a Win 2k8 R2 VM

I'm hoping someone can help me with this because after 2 days of googling I've come up with nothing. I have a file server that I have converted from a physical to a virtual on an ESXi 6 host. I have ...