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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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2 VM can not connect via external IPv4

I use Proxmox VE (Debian) for my VM. In order to reach my KVM computers externally, NAT is used with port forwarding. Unfortunately, no VM can connect to the external IPv4 of the host. But all VMs can connect to the internet and can be reached…
Root
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Why isn't balloon memory swapped, and how does ESXi know its location?

I have two questions regarding the ESXi balloon driver. When the driver inflates on a VM, what keeps the guest OS from page file swapping the ballooned memory? How does ESXi know which host physical memory addresses become available due to balloon…
Derek
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How to check Azure VM Port Heatbeat

I have an application providing http services in a specific port (eg: 8181). This app is autonomous and independent of IIS and any other application server. It is installed in a Azure VM. I want to check if this app stopped or have some crash. I…
Eduardo Spaki
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Vmware vCenter Server Appliance: [Errno 28] No space left on device and can't enable shell. How to access system and/or enable shell access

I'm running a Vmware vCenter Server Appliance virtual machine that has locked me out of the shell. The web interface has failed. I can view the main screen but when I press F2 to get into the settings it spews error messages imposed behind the…
Murphy
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Ubuntu 18 from ssh connect to another server in network Azure

I have set up three virtual machines, two on one virtual network and one on another virtual network via this tutorial, which was recommended on this forum for a similar issue. As such, the virtual networks were set up on two different Azure servers:…
tcratius
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Moving On Premises Infrastructure into Azure/AWS

I am new to Server Fault (coming from StackOverflow) and please tell me if this is not the right place to ask this general question. Basically our company is trying to move away from an on premises infrastructure to a cloud infrastructure. We are…
Tom el Safadi
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Nested VMware Virtual Machines in Azure Dv3/Ev3 Virtual Machines?

Is there a way to run Nested VMware Virtual Machines on Azure DV3/Ev3 Virtual Machines? I got error message: VMware Workstation and Hyper-V are not compatible. Remove the Hyper-V role from the system before running VMware Workstation.
dasdasd asdasd
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How can I access a .local url for a virtual ubuntu server installation?

I recently installed ubuntu server on a virtualbox virtual machine. I tried to connect it using .local but it didn't work? How can I access it from a url but not an IP? (I do not want answers saying to modify /etc/hosts)
randomuser5215
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Azure Virtual Machine log in denied - redeploy doesn't solve

I can't log in into my WS2019 Azure Virtual Machine (via remote desktop). Every time I attempt to do so, I get this error: Screenshot The Local Session Manager service failed the sign-in. The request is not supported. Redeploying the machine doesn't…
Kajcioch
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Azure Update Management for Windows VMs - Agent Not Configured

I am trying to manage Windows updates via Azure Update Management. I have successfully (or at least that is what the wizard told me) onboarded my VMs. From the Update Management section on the VMs you can see pending updates, however; under agent…
Chris Gonzales
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Moving a hard drive from one Azure subscription to another

I have a Windows 2008R2 virtual machine in Azure with an extra 1TB HDD data disk attached. Can I detach the HDD and move it to another subscription and attach it to a Windows 2016 Server VM that I have in the second subscription? Should I…
Bill Greer
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Azure Windows VM set up auto-start/shutdown

I'm just getting stuck at adding permissions for the automation account required to perform the auto-shutdown/startup for this Windows VM. So I'm at https://docs.microsoft.com/en-us/azure/automation/automation-solution-vm-management#prerequisites…
user757392
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Issues booting VM

I am new to Linux, and have inherited a VM that is running centos. It sat idle for about 2 years with no-one touching it. I have run some updates to get the system up-to-date. I think I accidentally did something in my newb attempts and now I cannot…
rxtem01
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High Active(file) Memory Usage in Oracle Linux VMs

I recently searched and read lots of posts and questions about Linux memory management but I can't find my case. For example, there is a question in Unix StackExchange about High memory usage but no process is using it. In this post, the accepted…
Mahdizade
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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 I try to ping the marked address I get a reply…
MarcoLe
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