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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Cannot increase disk space of a esxi VM

I wanted to increase the disk space of a VM in my VMware server esxi. I deleted a snapshot that was in the VM, but I canceled this operation unintentionally. Now, I can't see the snapshot in ...
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1answer
127 views

Setting up a dns server with a virtualbox vm running Ubuntu and making it accessible via vlans

I have a virtual box vm I want to use as a dns server for my local network. I have a few vlans setup. The vm host is 10.0.50.2 The vm is 10.0.50.4 I want to keep everyone out of the 10.0.50.4 network ...
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827 views

Access Localhost (Ubuntu -VM) from Windows

I use Ubuntu in my virtual machine and start from there my code projects. These project when active can be run under localhost:3000. Now when i execute in Ubuntu ifconfig I get following result: If ...
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1answer
44 views

Ping inexistent IP

I created an internal connection from my Debian VM to Metasploitable, i tried to ping Metasploitable's network address and it works, but when i tried to ping a random inexistent IP i was expecting the ...
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43 views

How to run user commands in conf module of cloud init

I want to run a command when an instance is booting up. This command is for accessing an internet (login script). But this command is run at very end in final module of cloud-init. And in other ...
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28 views

Intermittent: Boot Manager sometimes displays, offering only one OS

Sometimes, upon restart, our PDC will boot into Windows Boot Manager, even though there's only one OS installed in the VM: Here's our BCDEDIT output: C:\Users\Admin>bcdedit Windows Boot Manager -...
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1answer
74 views

validating virtual machine host automatically with fingerprint and something else

validating virtual machine host automatically with fingerprint and something else I've been researching various methods to validate a remote ssh server (virtual machine) automatically and remotely. ...
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75 views

Vagrant virtual hosts/shared folders not accessible

I currently have a vagrant box with CentOS 7. In my Vagrantfile I have the following configurations: config.vm.box = "centos/7" config.vm.provision :shell, path: "provision.sh" config.vm.network "...
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42 views

Test Environment Restoration Questions

I am currently deploying a few separate environments into Azure (Dev, Stage, Test, etc.). Some of these will need to be restored to their original state later down the line, for example, test may ...
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4answers
402 views

MySQL on VM, High IO Wait but low TPS

We are trying to figure out a strange situation on our MySQL installation on VM. We are on Mysql 5.7 and RHEL 7 with XFS. We are observing when we run a few select queries the IOWait races up to 40-...
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1answer
62 views

Google Compute: Weird error on moving VM instance to different region

Since my Google Compute VM instance randomly stopped working because the current region "does not have enough resources available", I rationally decided to move my VM instance away from the probable ...
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1answer
112 views

Azure Portal VM ARM Template Deployment With KeyVault

I want to deploy a VM in Azure and store the local admin password in Keyvault. I was wondering if it is possible to do the deployment through the Azure Portal? I've added the required info to my ...
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339 views

Azure linux VM Port not open

Im trying an ubuntu linux vm on azure, and need port 9001 to be open on inbound. but cant reach the vm from outside on other ports than 22. I have enabled firewall in linux vm and have opened those ...
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0answers
354 views

Sluggish Linux VM's on Hyper-V

I am experiencing very sluggish response with Linux VM's (Debian Gnome 3.30.1 64bit) running on Hyper-V on a Windows host (Server 2012 R2 64bit). Slugglish being any movement around the screen, mouse ...
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2answers
123 views

In Azure, how do i set a subdomain to a separate VM?

I have an Azure VM that hosts mycompany app at mycompany.com. I'd like to have different VMs for each subdomain created like client1.mycompany.com. What i tried to do already was to have separate ...
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230 views

QXcbConnection: Could not connect to display Aborted on Google Cloud VM Instance?

Am getting the above error when I try and run an executable on a VM Instance on Google cloud: ./raven-qt QXcbConnection: Could not connect to display Aborted  Getting this error when running raven ...
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102 views

Using fiddler as a proxy for emulator to capture local traffic, rerouting gateway

I am currently working in a Virtual Machine environment using VMWare Workstation pro 12. I plan to capture network traffic from a mobile application. I am currently using Nox App Player with Android 4....
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1answer
109 views

Are there special prerequisites for installing Docker inside a virtual machine running debian stretch?

I am trying to install Docker inside a virtual machine running debian stretch that i was provided access to by my company. Searching through forums i read many posts claiming this is working out-of-...
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1answer
52 views

Is it poor practice to have db and site on different vms on same physical box? [closed]

I am not too familiar with how virtual machines work but I was planning to have two physical machines each with two virtual machines on each physical box. What I wanted to setup is a test environment ...
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1answer
54 views

Azure VM Site Replication

I'm looking to set up site replication for our Azure VM's. My question is this, how often are the VM's backed up/replicated to the DR site? Is this replication automated or would I need to kick off ...
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1answer
30 views

Recovering From Safe Mode

I changed the boot settings of my VM to safe mode, but I forgot to keep networking on. Now, I can't connect to it. How do I fix this?
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0answers
543 views

Wireshark running on Host OS not capturing packets from VM

I have Wireshark running on my laptop (Ubuntu 18.04), and I also have Wireshark running inside a VMware Workstation Player with a Backtrack 5 Kali Linux virtual machine image. The VM Network ...
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1answer
82 views

Vcenter + can we update memory online in spite Hot-add feature is disabled ,

Hot-add feature is disable in the vcenter therefore we need to shutdown the Linux OS in order to update the memory. Since we cant shutdown the linux machine, and we must increase the memory of the ...
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1answer
3k views

Is it possible and how to download an Azure VM to local machine?

I have a VM on Azure, it has many websites and databases with configurations which make it a little tricky to export everything from there. Now I don't want any of these website to be running and for ...
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2answers
62 views

VM image vs Phyical server image?

I often hear its easy to create the image of one VM and setup it another VM(even instance types are of different types) than creating the image on physical server. In fact one of the devops guy in ...
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31 views

Add route rule for specific destination

I have a VM, say A, that is set as the default gateway of another VM, say B. In other words, the default gateway of B is A. On VM A I have this virtual interface, on which VM B is connected. The ...
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1answer
151 views

Storing Xenserver VM Snapshot UUID as a variable in a shell script to create .xva files from snapshots

I was looking at this question which was asking something sort of similar for help and is the closest thing I could find to helping, but it doesn't solve my issue: export XenServer snapshot as file ...
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0answers
80 views

Azure Site Recovery Service Principal Fails During Creation

I'm trying to setup up Site Recovery in my Azure Recovery Services Vault. The plan is to have selected virtual machines replicate to a secondary region like Arizona or Texas. I created my vault (in ...
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1answer
111 views

Windows 2012 R2 server on Azure hangs for about 20 minute every week

We have a Windows 2012 R2 server on Azure and it hangs for about 20 minutes every Tuesday morning. When the server is hung, we noticed: 1) Most of the IIS (web) requests are not served. 2) No new ...
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76 views

VM Size not available for any image and in any VM region

I created a new account with Pay-as-you-go subscription. I'm not able to create a VM because VM size is not shown for any Image. When I click on Select Size it is showing the following message ...
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1answer
49 views

Google Cloud Platform, Deployment Manager Project, changing the VM instance

We have used the Deployment Manager to create a website from the Wordpress (click to deploy) LAMP server. We have have since recreated the VM instance a few times and also connected another VM ...
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0answers
41 views

How to grow a striped data disk volume in an Azure VM?

I have to extend a striped data drive on a windows server 2012 R2 VM hosted in Azure. The existing drive is labeled in windows as F and is a striped volume consisting of two 150 GB SSD's. What's the ...
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2answers
4k views

What if I store 10TB on azure servers and then keep the vm powered off?

I want to know should I pay for storage on azure even if I don't use it? for example if I store 10TB on an azure VM and then keep that VM powered off, Will Microsoft charge me for that 10TB data? Or ...
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1answer
45 views

Accessing Bottle webserver VM form Host

I have an Ubuntu VirtualBox VM running and Bottle webserver on http://0.0.0.0:8080. How can I access this on my host (OSX)? I want to do this because accessing the web server using FireFox on the VM ...
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0answers
177 views

Terraform code to connect Azure Storage to VM is not working

I dont understand why the storage account is not getting connected to VM. I am not getting any errors & storage is created, but remains unattached to VM. provider "azurerm" { version = "=1.22.0"...
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1answer
44 views

How Is A Free Account Charged When Using Microsoft Azure Products?

I can find this answer right away by searching the price of each product when in use. However, it is only a general price but not completely detailed. I posted this question only for more details on ...
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1answer
111 views

Simple Hypervisor for one OS from boot [closed]

I would like to run a hypervisor that will let me install a VM on it where the end result would be such as that when these workstations will be turned on the following will happen: Hypervisor boots ...
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0answers
46 views

Audio on Ubuntu Linux Azure VM

I have been trying to install alsa (using a simple sudo apt-get install alsa alsa-tools) in a Linux Virtual Machine on Azure (Ubuntu 18 LTS) but I'm having this error: Loading new oem-audio-hda-daily-...
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1answer
70 views

Expired DHCP lease on restored VM snapshot interfering with active gRPC connection?

I am using gRPC to communicate between Java (running on the host) and Python (running on my Guest VMs). My software sets up some VMs at startup with libvirt. I specify my network with a DHCP range ...
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295 views

Setting up public IP address on CentOS 7

When configuring a LAMP server on CentOS 7, do I need to to setup first a public IP address before my website to be accessible on the browser? I already tried configuring the /etc/sysconfig/network-...
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1answer
24 views

Exporting a virtual machine

I'm trying to export a VM running Windows server 2016 (in Hyper-V, on W10 pc). I have to export/import to a share-folder that is on the machine I want to export to, but when I click "Browse" in ...
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3answers
71 views

Is possible to have a vm running linux that require no installation on windows?

I want to create a self contained VM that reside in a folder on a windows computer. When running, it requires no installation of VM software; and can run in the background, so I can send from Windows ...
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1answer
40 views

Converting a physical Windows partition into a VM for use with KVM, and then configuring the Windows VM as a router for my Linux host? [closed]

So bassically, I'm in year 11 and go to highschool. I have got a Linux laptop and asked them to connect Linux to their network (which they do for Windows/Mac computers). They didn't want to (it's not ...
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1answer
24 views

Creating users in a Windows 2016 VM server which is integrated Azure Active Directory

Scenario/Problem: We need to facilitate access (user access) to an Windows 2016 VM server for couple of our colleagues in our organization. My understanding is that we do not need to create users ...
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1answer
881 views

VM deployement error in Azure

I was getting error while deploying a Windows VM in Azure. This VM image was created from a custom VHD. Error: Provisioning failed. OS provisioning for VM did not finish in the allotted time. The VM ...
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1answer
63 views

MS Azure VM drive mess

I'm new to Azure and I already hate it :D Anyway, I'm trying to do a simple task - create a VM with 8 cores, >=8GB RAM, 128GB drive (gonna run Ubuntu server on it). Just ONE OS drive. Nothing else. ...
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1answer
650 views

Is it possible to Stop and Deallocate Azure VM from the VM itself?

I am trying to stop and Deallocate a linux Azure VM from the script that is running on the VM by sudo halt This terminates the session (ssh if interactive), stops the VM, but does not deallocate ...
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1answer
110 views

Default Storage account for Azure VM

I created a Windows virtual machine with OS + 1 data disk, which storage account the disk are stored. Is there any default storage account? I am using my free azure account and currently I don't have ...
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0answers
229 views

Hypervisor support for vGPU + VM suspend?

Short version - how well do current hypervisors support vGPU with VM suspend/resume capability? Longer version: I've used VMware Workstation for many years in my home lab, with the GPU (used for ...
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1answer
106 views

Google Compute Engine App nothing listening on ports 80 and 443

My post is very similar to this one. I have a Docker container running a very simple node.js/express app listening on port 3000, running on a Google Compute Engine with http and https firewall rules ...

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