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We also use CentOS 7 on the real machines. This makes life easier, because we only need to know CentOS config style. Of cause you could use other Linux distribution on the real host.

1.1. 1. Step: Install CentOS 7

1.2. 2. Step: Install KVM

Required packages:

cat << EOF > /etc/yum.repos.d/qemu-kvm-rhev.repo [qemu-kvm-rhev]
name=oVirt rebuilds of qemu-kvm-rhev
baseurl=http://resources.ovirt.org/pub/ovirt-3.5/rpm/el7Server/
mirrorlist=http://resources.ovirt.org/pub/yum-repo/mirrorlist-ovirt-3.5-el7Server
enabled=1
skip_if_unavailable=1
gpgcheck=0
EOF

yum install qemu-kvm-rhev libvirt bridge-utils
# qemu-img is not
needed

Start libvirt:

systemctl start libvirtd
systemctl enable libvirtd

3. Networking

We use bridge networking API. Things you need to do is:

1. real host: all IPs must run on the bridge interface and not on the real network
2. real host: assign the bridge device to your real network interface
3. VM: assign the VM to your new bridge device

This is perfectly explained here: https://www.linuxtechi.com/install-kvm-hypervisor-on-centos-7-and-rhel-7/