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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.

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VMs says out of disk space when there is a lot of space still available on the VM [closed]

I am using an ubuntu vm on microsoft azure. I am facing a problem with creating new files and data being stored in database. It is throwing an error which says vm out of space. When i run df -h --...
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Accessing physical 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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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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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
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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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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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2answers
65 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
46 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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58 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
34 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
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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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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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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
318 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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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
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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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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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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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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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26 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
19 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
54 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
254 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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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
547 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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Azure VM vs Azure for PostgreSQL

I have a PostgreSQL database which is about 200GB. The database is accessed from an application server which sends through, on average, 500 requests (queries) a minute. At the moment it's running on ...
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1answer
38 views

deploy 100 vm in GCP (with same configuration at same time)

I wanted to deploy the 100 VM for my customer as he want.But i dont want to create the 100 VM manually one by one . i wanted to create those VMs in single time in single click .Please provide the ...
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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 ...
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2answers
65 views

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 ...
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2answers
30 views

Recreating VM in Azure using snapshot, possible complications

I'm going to test something on the VM. If it fails, I want to recreate the VM using a snapshot. What I'm concerned about is if such a process won't change some property in azure. For example, change ...
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Setup Foreign Locale OS

New to building VMs in Azure. I need to build an Italian Locale VM but when I created the VM, I did not find the option of selecting a language. The VM that got built was an en_US locale. Thank you
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3answers
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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 ...
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1answer
42 views

I can't use a graphics card on my vm [duplicate]

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?
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25 views

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 ...
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What exactly is a TX collision in a context of a VM?

I'm inspecting a problem with a MongoDB replica set reelecting a primary multiple times per minute. It seems that there is something wrong with the network configuration, but I can't nail it down yet. ...
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1answer
53 views

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: ...
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1answer
183 views

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 ...
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38 views

Failed to enable VMware vSphere Fault tolerance for VM with virtual RDM

I am trying to enable FT on a VM that has a virtual RDM disk but whenever I do it I got an error message saying "Device "Hard disk" is raw disk which is not supported" but to the best of my knowledge, ...
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26 views

Virtualize a windows boot partition over smb

I would like to know, if it is possible, to virtualize a windows boot partition from a Linux machine, over smb? I have only access, via the Admin Share C$, from my linux box through samba. I dont ...
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1answer
63 views

permission denied publickey using rsync with GCP

I'm trying to connect with rsync to a GCP vm. Whenever I do, I'm getting weird errors related to permissions. I've checked that my username is part of the sudoers group so I can't really see where ...
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132 views

The driver detected a controller error on \Device\Harddisk0\DR0 on a virtual machine

The event in question is generated by a virtual machine. The disk 0 is a scsi connected drive to the virtual machine. The vhdx file is in the hyper-v cluster which has the storage from SAN cluster. ...
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25 views

File changes rollback. Possible faulty disk cache?

I have dozen hard and virtual machines, windows and linux. Sometimes i have strange rollbacks of recently modified files. Linux configuration files can rollback after reboot. On windows some ...
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0answers
23 views

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 ...
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1answer
37 views

vm is running,DNS is connected no webpage

Sorry, I'm a Noob. My VM's were stopped on GCP. I managed to get 1 VM up and running no problem by restarting it. I have tried to restart the other 2 VM's and they appear to be running but I've got no ...
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1answer
51 views

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?...
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1answer
49 views

Hyper-V cluster migrations / vSAN software

We’re in the process of performing a large physical-layer upgrade with our hypervisors and I am looking for some advice regarding our proposed configuration and VSAN Software. To break things down, ...
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2answers
63 views

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 ...
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1answer
28 views

Unable to remove invalid VM

After adding an USB controller to a running VM, the VM crashed. In vShpere the VM was marked as (invalid). After some Googling I removed the VM from the inventory, tried to readd the VM, but the ...
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1answer
35 views

Separate LAN/DHCP network for each VM under same Physical NIC

I have a bare metal server with 2 NIC(eth0 and eth1). eth0 is connected to the internet and eth1 for LAN(DHCP must). Now I need multiple servers like that. So I have decided to go for VM. I have ...