Detailed walkthrough of building a dedicated KVM/libvirt hypervisor with XFS tuning, hugepages, 10GbE tuning, and automation.

How to engineer a predictable KVM-based infrastructure focusing on repeatability, observability, and operational safety.

How to use virt-sparsify to reclaim unused disk space from qcow2 VM images.

How to structure a modular Vagrantfile using separate .rb config files for resources, disks, and networks.

Step-by-step guide to installing KVM virtualization on Debian 13 (Trixie).

Step-by-step guide to installing EVE-NG on Ubuntu 24.04 LTS bare metal server for running network labs.

Building a Practical Chef Lab on KVM and Vagrant that mirrors real infrastructure far better than desktop hypervisors.

Installing eve-ng on ubuntu 24.04 on BareMetal server for running as a type 1 hypervisor.

Spin up an openSUSE Tumbleweed VM quickly using Vagrant with the libvirt provider on your laptop.

Red hat certifications are one of the most demanding in the IT industry, I wanted to get started with planning working towards getting RHCE certified.

Generally when a network is configured from virsh-define for a particular range say 192.168.4.0 it gateway will be automatically assigned to 192.168.4.1.

After setting up bridge network on network interface enp9s0, kvm guests had issues with accessing ssh, internet.

Openvswitch is a virtual switch production level software, that can be used in virtual switch in VM environments like kvm, virtualbox etc.

Set swappiness to 10, swap space will be used at or 90% usage of system ram, generally on linux systems, this value is set to 60.

Openvswitch is the software used on both physical and virtual environments to implement L2 switching.

KVM supports diskless booting of operating systems over a network, kvm default network can be configured to act as a pxe server.

By default on Linux machines CFQ I/O scheduler is used. For virtualization like KVM, VMware it needs to have optimized throughput using deadline or noop scheduler.

virt-manager is a graphical tool to manage KVM VMs on a host, due to some dependency or reinstall of libvirt can cause virt-manager to show ImportError: No module named libvirt.

On libvirt default storage pool is created called default, default pool will be defined to use location /var/lib/libvirt/images for file based volumes.

virt-install can be used to provision kickstart while installing, this provides an answer file to all the settings required to install OS.

By default VNC listens only on localhost or its own IP address, to make libvirt VNC listen on all interfaces edit the qemu.conf file.

Libvirtd by default has a storage pool called default, we can create additional storage pools from a simple XML file.

With standard partition layout we can have maximum 4 primary partitions (considering MBR). With LVM we can create number of partitions.

Setting up Minikube with KVM driver on Fedora 26 to run a local Kubernetes cluster.

Vagrant enables users to create and configure lightweight, reproducible, and portable development environments.

Libvirtd by default uses dnsmasq to provide ip address for kvm host vms automatically when libvirtd daemon is started.

vagrant box for ansible is available for only virtualbox to use with libvirt we need vagrant-mutate plugin to convert it to libvirt.

kvm command line tool virsh when access remotely will ask for authentication, which is quite annoying at times to fix this we can add a polkit rule to allow users to access libvirt daemon.

Check whether the host supports virtualization with grep -E 'svm|vmx' /proc/cpuinfo, then install kvm and manage virtual machines with virsh.

KVM stands for Kernel based Virtual-machine which provides capabilities to run multiple multiple hosts on a system.

Configure a Linux software bridge for KVM virtual machines on Fedora 26.

Install Vagrant and use it with the KVM/libvirt provider on Fedora 26.