Questions tagged [virtualization]

Virtualization is a group of software technologies that allow abstraction between layers of a system. This allows separation between the logical layers of the system, providing isolation, flexibility, and/or the ability to run more than one at a time. This differs from most traditional systems where the various layers are inherently tied.

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Forward ssh connection to Android devices

In my lab I want to set up a ssh jump host that forwards incoming ssh connections to Android devices that are connected to it via USB. All Android devices have USB-tethering turned on. The tethering ...
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Why would Google be throwing away emails from virtual domains to virtual domains? postfix

I'm seeing some odd behavior and am hoping someone has seen this as well. I have a CentOS server running Postfix for virtual domains for my businesses. It was working well for years and then suddenly ...
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KVM hosts to be accessible from outside world for server purpose In centos 7

Today i just ran into a problem i just wanted to ask a question to all of you I have just install kvm in my system and i have some how managed to get a node installed and working in the system Now ...
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Feasibility of a VM/container per user deployment framework

There have been a couple instances in the past that I have been tasked with building an architecture where, we deploy one VM/container per user. This has been for reasons like: needing each user to ...
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Is it possible to run a VM without actually enabling virtualization settings in BIOS?

I am trying to launch a VM with QEMU KVM on a Linux system but I am unable to actually make it work. It just doesn't start. But I figured out that I need to enable virtualization from BIOS settings to ...
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qemu does not give by-id symlinks for drives by UUID in linux guest

I am trying to get my drive to show up in QEMU guest virtual Linux machine. desired behavior: $ ls /dev/disk/by-id/ ata-CT1000MX500SSD4_XXXXXX Current behavior returns nothing: $ ls /dev/disk/by-id/ ...
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Solution for virtualizing a VB6 application [closed]

I posted this on stackoverflow, but probably it's more intopic here. My company, a small manifacturing industry, uses a custom ERP built in Visual Basic 6, made of a single desktop application ...
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KVM Virtualization Server - One physical disk(SSD) every virtual machine

In terms of performance, is it better to have one "big" SSD disk for several (lets say 5) virtualized guests, or a single smaller SSD disk for every virtual machine? any general draw back ...
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Raw LVM disk write is four times faster on host than inside KVM guest?

I've got a Debian 10.6 Host, with a Debian 10.6 guest. KVM/Qemu/libvirt. The host has a software RAID 10 array with 6 mechanical disks. LVM is on top of the RAID array. One LV is passed into the guest ...
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How to enable nested virtualization in order to use VirtualBox inside of a KVM virtual machine?

We have a KVM hypervisor (L0, AMD, Kernel: Linux level0kvmhypervisor 4.19.0-12-amd64 #1 SMP Debian 4.19.152-1 (2020-10-18) x86_64 GNU/Linux), which runs a virtual machine that I would like to use as a ...
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Resizing VM's size having only boot partition

I've to increase my KVM guest's partition, I followed steps as explained in the accepted answer here. For step 3, there's a link mentioned in the accepted answer comment section (tried to paste it ...
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Hetzner vswitch with public addresses using router - how to get to the internet?

I am using a Hetzner vswitch with some public IP addresses and I want to use them on some virtual machines. The whole config is as described in my larger question where I say that it feels like data ...
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VLAN tagged bridge to virtual machine - seeing network chatter but ssh/ping don't work

I have a VLAN-tagged network going through a bridge to a virtual machine, and I can see network traffic on the virtual machine using tcpump, I can't ping or SSH it. I run tcpdump -n -e -i br4003 host ...
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HyperV Error: “The server encountered an error trying to create the Virtual Hard Disk”

I'm currently trying to convert my Physical Ubuntu 20.04 Server to a Virtual HyperV Ubuntu Server. As such, I am trying to convert my physical Ubuntu 20.04 hard drive into a virtual hard disk. I'm ...
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How to install xenserver on HP Proliant DL360p gen8 server using iLo?

There is a clean HP Proliant DL360p gen8 server. The task is to install xenServer. When trying to install after choosing a language, an error appears "No network Interfaces: This host does not ...

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