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Questions tagged [virtual-machines]

A virtual machine (VM) is a completely isolated guest operating system installation within a normal host operating system. It is a software implementation of a machine (i.e. a computer) that executes programs like a physical machine.

Modern virtual machines are implemented with either software emulation or hardware virtualization. In most cases, both are implemented together. Usually the term refers to system virtual machines which provide a complete system platform which supports the execution of a complete operating system (OS). Note that process virtual machine exist too, which are designed to run a single program (a single process).

An essential characteristic of a virtual machine is that the software running inside is limited to the resources and abstractions provided by the virtual machine—it cannot break out of its virtual environment.

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How to talk to a virtual host on a guest OS?

Let's say there is a host OS (Mac OS X) and a virtual machine running Ubuntu as guest OS. The guest OS has the IP 192.186.56.101 and some virtual hosts, e.g. ubuntu.server So, how to really map a request to the virtual host ubuntu.server on the…
Bernd
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Azure VM 'goes offline' from time to time and resolves itself, not sure why?

So I have a server running in Northern Europe, it works fine for the most past, but, once or twice a month it goes offline for half an hour so, and I have to wait for it to come back again. SSH not possible during this time. Azure Portal says VM is…
Greg Bengis
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VMs restarted during backup job - due to VM patching

I wonder what will happen when the VMs are restarted while backup is running ? Our backup runs almost 12 hrs at night. And at that time, we are also going to apply the patches and reboot the VMs. I am not sure what will happen if the backup is…
ToreTrygg
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Backup volume and Data on the same raid array?

I have to setup a server with three VMs. It must also act as first backup storage location. The server is equipped with 8x1,8TB HDDs. I'm not sure if it's a good choice to have one big raid10 with both vHDDs and Backup or create two RIAD10 array: 1)…
lu_luca
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Can I launch an image inside lxc as a GUI?

I'm completely new to lxc. I've installed lxc and lxd and created a Linux mint container. I'm getting into and out of mint via the CLI, but as I'm messing around with it I'm wondering: can you, say, launch this and see its desktop environment…
Daniel
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Giving IIS access to files shared from a mac

I'm relatively new when it comes to network administration, but I have put in many hours of research and effort before asking this question. I know my question is similar to many others, but I don't believe it is a duplicate. My apologies if I'm…
Grant
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Google Cloud VMs has dissapeared

This is my problem. I had payed for 3 VMs on google cloud for 2 years. My service has ended 3 months ago and I couldt renovate that services for budget problems. Nowadays I have the budget and I need to continue with my VMs but they just have…
Manuel rodriguez
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Alternately running VMs with VMware on Windows and KVM in Linux

I plan to set up a virtualized test- and demo environment to show our clients how wonderful some applications can be deployed as containers. To be mobile I plan to use my laptop as the hardware platform. So far, simple. Now, as I prefer to work with…
Bernhard Breit
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I can't use a graphics card on my vm

I can't use a gpu on my vm and it says: Quota 'GPUS_ALL_REGIONS' exceeded. Limit: 0.0 globally all the time and I have premium so how do I fix this?
Fortster
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Why I can't navigate on Internet or ping external server after that I configured fixed IP on a Linux VM on VmWare?

I am not so into networking and I have the following problem. I installed Kali Linux on VMWare. I am using NAT networking mode. The default networking settings use DHCP to assign the IP address to my VM and it works fine (I can navigate). I was…
AndreaNobili
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Is it possible to have a partial hyperthreading with a Linux System?

I have a server with 2*14 cores with Hyperthreading enabled. This means I have (2*14*2=28*2) 56 vCPUs. [root@supervision1 /]# dmidecode -t 4 | egrep 'Socket Designation|Count' Socket Designation: SOCKET 0 Core Count: 14 Thread Count: 28 …
Manumammouth
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Unable to Start Azure Kali Linux VM - NetworkingInternalOperationError

I am unable to start my Azure Kali Linux VM. The VM was working yesterday and was shutdown yesterday. The Azure console shows it as stopped(deallocated). When I try to start the VM it fails with the error "Provisioning failed. An unexpected error…
user18511
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Recovered RAID10 after 2 disks failed but VMs unable to boot

Last week I had 2 ssd's fail on my RAID10 array of 4 ssd's. I managed to rebuild the RAID, however then a 3rd ssd failed so had to rebuild that - the end result was that it rebuilt all OK. It is worth noting this server runs ESXi with around 10…
CrazyHorse019
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Azure VM Scale Set - Scale In during task

This seems like a basic question but I haven't been able to find an answer googling around. How does scale sets know that a particular VM has finished what it's doing and is able to be de-provisioned? From the scale sets FAQ the VMs with the…
timyhac
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No internet in Azure's VM after installation

I've setup VM without public IP, on a VNET with default DNS servers (provided by azure). My network security group allows port 80 and 443 (inbound). I can't access any site in IE once I connect through RDC. nslookup works but pinging sites like…
Pomme
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