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.

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Issues Connecting to DNS on Windows Server 2016 from RSAT on Windows 10 Pro

I will make this as concise as I can. Background: I am trying to set up a collection of Windows 2016 VMs to test through some labs but I am having issues connecting as my title states. This is the ...
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13 views

How to create backup/snapshot of Unmanaged OS disk in azure?

I have a Virtual Machine which has an associated Unmanaged OS disk with it. If my OS disk is of managed type it gives me option to take snapshot of the disk. But for unmanaged disk it is not giving ...
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39 views

Why are GPUs accessible from docker containers running on Linux hosts, but not on Windows or MacOS hosts?

Recent versions of docker (or any version of nvidia-docker) allow direct(?) access to the host GPU from within docker containers, with full access to CUDA APIs. This is very convenient when deploying ...
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On-demand remote desktop service without paying for dedicated VM [closed]

My fiancée has a slow laptop and she can't design websites on Wix as a result (she can do everything else). What is software that lets you rent remote access to a fast PC at an hourly rate called, if ...
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29 views

Migrate a VM from atlantic.net to AWS

I have a number of servers on cloud.atlantic.net put up many years ago, and now we have most of our stuff on AWS. The nice thing about AWS is it allows me to shut down (and not pay for) a rarely used ...
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Vms on Azure whith QoS [closed]

It would be possible in azure vm to limit the network bandwidth, set up a QoS for one vm or several vms. Thank you for your help. Att. Eduardo
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1answer
41 views

How to get the sound on a VMware ESXi virtual machine?

We are using VCSA 6.7 with five ESXi 6.7 hosts and multiple VMs are are running inside the ESXi hosts. I have no sound card installed on the ESXi hosts but we need sound from VMs. Can we do that?
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Migrating from EC2 to Proxmox VM

So I am currently running 3 servers on EC2 with total of 3 cores. And 4 GB for the main server and 1 gb each for the dns servers. The bill doesn't make any sense to me paying 70 ish $ a month. I ...
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Domain and Sub Domain hosting with GoDaddy & Azure VM

I have a domain(xyz.com) created at GoDaddy which will points to the site hosted in the Azure VM. I would like to have another site in the same VM. This will be having address as dev.xyz.com. To ...
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36 views

How can I umount /dev/sda1 partition in ubuntu?

I have a Ubuntu VM which has an unmanaged OS disk associated with it. I want to shrink my OS disk of size 50 GB to 40 GB. However, when i try to unmount /dev/sda1 partition it tell me umount: /...
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Partition didn't resize after increasing OS Disk Size in Azure

I have a Ubuntu VM which has an unmanaged OS disk associated with it. When we increased the size of the unmanaged OS disk from 30 GB to 50 GB(after deallocating the VM and increasing its size from ...
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Cannot start or re-deply VM, looks like host issue (NetworkingInternalOperationError)

I'm struggling with a VM that I set to shut down every evening and re-start the next morning. I have made no changes to the config at all, but since two days ago it can't start (spends about 30 mins ...
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cant access apache server on virtualhost from host with port forwarding and bridging

I can't access my apache server on virtualhost fedora 31 with vmware workstation 15. I tried auto-bridging and port forwarding with a static ip for virtualhost. I can access internet from inside ...
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1answer
26 views

How do I capture packets on a Linux VM in a VMware environment?

I've got a Linux server that is a VM running on ESXi 6.7. We're running into some network trouble with it, and I'm trying to use tcpdump to capture traffic on the VM itself, but I'm getting only the ...
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1answer
40 views

Hiding the virtual machine [closed]

I wanted to ask a question about Hyper-V. I have several solutions on Azure, and they completely suited me until yesterday. I needed to deploy cloud desktops, but the software I want to work with, ...
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46 views

Qemu guest machine access to host proxy server

I have a host running linux (opensuse), which has a local proxy server at http://127.0.0.1:1234, running a Windows10 guest via QEMU by virt-manager. The network of the guest is using NAT to host with ...
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1answer
17 views

Partition didn't reflect the changes after increasing OS Disk Size in Azure

I have a Ubuntu VM which has an unmanaged OS disk associated with it. When we increased the size of the unmanaged OS disk from 30 GB to 50 GB(after deallocating the VM and increasing its size from ...
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62 views

How to restore an OS disk onto a different, resized Azure VM as its new OS disk?

I am able to create a new virtual machine that's of a larger size than my current one, but I am not able to upgrade or resize an old VM to that larger size even though it's of a pretty similar type. ...
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261 views

How to run several ESXi VMs that must have the same MAC address?

For various reasons I have to run a few (≈6) clones of the same virtual machine at my lab ESXi server at work and unfortunately the MAC address must not be changed between the clones. Changing IP is ...
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46 views

Virtual machine disk I/O latency spikes

Since past few days I have strange I/O spikes in one virtual machine. Its 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux Server ...
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1answer
36 views

Hyper-V server 2019 – Internet not working for Guest VM

I’m trying something apparently very simple, and I reviewed former posts for 2 days about the subject without success: Setup a Hyper-V Server 2019 On that server, install a Gen-2 guest Virtual ...
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28 views

Run Server in Virtual Box with Client in Host OS - How to enable connection

[In network engineering stackexchange I was told to post this here, sorry if I'm offtopic again]. The problem I face is the following: I got a license file for a program and have to set up a license ...
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31 views

Disk space full on FreeBSD VM

I've ran into a space issue I have never experienced before and was wondering if anybody knows what I'm missing here. [2005][root@base ~ ] # du -h / | awk -F/ 'NF <= 2' 4.0K /.snap 3.0K /dev ...
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30 views

How to be a redundant with VMs on this middle infrastructure?

I need to implement for an association three virtual machines to manage the domain and two other software that will use databases. Of course they don't have a big budget but I am trying with their ...
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1answer
36 views

Create VM from existing Linux server [closed]

I have been tasked with finding a way to create VMs for our existing Linux servers, as sometimes we have do deal with issues related to the entire machine (virutal hardware, OS, etc.). These are ...
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Accessing physical Host COM port within Hyper-V VM

I have just virtualized a physical machine running Windows XP Pro SP3. The physical machine it was copied from is running a piece of critical software needed for day-day operation and security. This ...
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3answers
50 views

Using 2 Hyper-v servers (no AD) with replication to provide seamless swithover

I have a very limited budget, and little knowledge of this, so please bear with me. We have a primary, and backup Hyper-V server. Replication is running from the primary to the secondary. I need to ...
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0answers
10 views

GCP (Google Cloud) VM Stops Working. How do I fix?

I have a Google Cloud VM that I'm running a web crawler on. Unfortunately, the crawler does not add any entries to the database after a certain time. If I then want to connect to the VM to see what ...
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1answer
34 views

resolve VMs to subdomain

I have a dedicated server which has only one public IP address (eg.10.20.30.40) and a domain dedicated to it (example.com) on that server I have lots of virtual machines hosted on an ESXi Hypervisor, ...
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37 views

Sysprep: Does it remove Windows Credentials from an user account?

I have an automated process that's supposed to build out an image and have that image deployed with a user that is setup to run a service. The user needs access to an azure network file share. In ...
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67 views

How to run multiple copies of a program? [closed]

I need to run a scientific program. One can usually only run one copy of it at any one time, it wont allow another copy to be open at the same time (somehow). I would like to set up virtual servers ...
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1answer
48 views

CentOS7 VM server on vmware - Network error - Destination Host Ureachable

Before you try to mark this as duplicate, please note that i tried almost everything and that nothing worked. I tried finding a solution but no success. Therefore, i need a fresh look on my problem. ...
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1answer
106 views

Unable to open port 443 in Azure Centos vm's

I created a new VM under Centos 7.7 but I’m unable to get the port 443 open.. I created an new Resource group, a new Virtual network/subnet ( both with the default setting) , open ports 22 ,80 and ...
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1answer
36 views

Find/Allocate IP to new VM for ssh

I created a virtualbox vm with bridge connection. How do I find its IP address, or set its IP, so I can ssh into it and use it? It has a mac address, can I use this at all to set a route through arp ?...
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1answer
91 views

Problems connecting 2nd host to NLB cluster

I've recently deployed Hyper-V into my hosting infrastructure and i'm trying to setup windows network load balancing and ARR so that i can have 2 VM web servers that are load balanced by 2 ARR servers ...
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2answers
79 views

How to use Ansible to control VM servers running Vagrant?

I've got a couple of servers running each few virtual machines. On each server I use Vagrant to create and control VMs. Now I want to find some tool (thought about Ansible cause I know it a little bit)...
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16 views

Providing Support from Jumphosts using Site-to-Site VPNs

To provide support for our customers, our support staff has to establish VPN connections in order to connect to hardware devices that are located in the networks of our customers. Due to security ...
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2answers
319 views

Install Ansible on a Mac or rather on an Ubuntu VM?

Using MacOS as my primary machine, I would like to use Ansible. Glancing over tutorials I get the impression that running Ansible from Ubuntu (or in my case: a dedicated virtual machine running ...
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76 views

Having enough memory but getting “insufficient memory for the Java Runtime Environment to continue”

My java app crashed after running for 3 days with following information: # # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (mmap) failed to map ...
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4answers
85 views

Do I need 2 Domain Controllers?

Where I work we currently have 1 domain controller for around 35 PCs. It is a virtual DC running off Hyper-V on our Server. We also have other VM'S for Exchange, Apps etc. Do we need to have 2 DCs?...
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28 views

Is there a difference in network behaviour between disconnecting network in VM and shutting it down?

that might be a strange question. I'll try to clarify. I played around with rsyslog and it's ability to change the server it is sending to if the first one is suddenly disconnected. I'll call them: ...
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23 views

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 ...
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53 views

Auto login to windows Virtual Machine [closed]

We have a VM on GCP with windows server. The machine gets shutdown over night and then starts up again in the morning everyday using Cloud scheduler. Auto log in in was setup in Windows registry. ...
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1answer
21 views

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 ...
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28 views

Poxmox Add new public IP

I try to use Poxmox with a public IP but now I want to add another public IP to the panel. In the Panel it does not let me put it directly and I must do it by interfaces /etc/network/interfaces ...
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1answer
24 views

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, ...
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1answer
84 views

RHel 7 converted with qemu-img fails with dracut error at boot

I'll have to migrate several computers from Hyper-V to VmWare. I would like to use qemu-img because is command line and I could create an script. Conversion works fine for Windows but is not working ...
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2answers
515 views

Windows Server 2019 Standard Edition Licensing for Virtual Machine on Hyper-V [duplicate]

I have windows server 2019 standard edition installed on my host machine and with 2 additional Windows server 2019 on Hyper-V virtual environment. Now I want to install 2 more windows 10 client VMs (...
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44 views

ssh tunnel to nfs shared folder does not work

I have a kubernetes cluster on one host where the master and the workers are on virtual machines. On another host, which is connected to the first through a local network, I have a virtual machine ...
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2answers
564 views

If Azure VM server crashes

In general, when you have a VM on Azure, is it running on a single physical server or on many? I see that there is an option to make sure that your VM is on a dedicated server. What would happen if ...

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