The target of this HowTo is to create a KVM host enviroment on a hardware using workstation operating system. The default network created after this procedure uses NAT (Network Address Translation). VMs get private IP addresses from the 192.168.122.0/24 subnet and can reach the internet through the host, but are not directly reachable from the network.
Detect virtualization flags from CPU
lscpu | grep Virtualization
apt-get install qemu-kvm libvirt-daemon-system libvirt-clients -y
lsmod | grep kvm
usermod -aG libvirt $USER
To create/remove/modify virtual machines, Cockpit is recommended.
virsh net-dumpxml default
apt-get install cockpit cockpit-machines -y
Start virtually working: COCKPIT