$ sudo yum install qemu-kvm libvirt virt-install bridge-utils

$ sudo systemctl enable --now libvirtd

]$ sudo systemctl status libvirtd
● libvirtd.service - Virtualization daemon
   Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
   Active: active (running) since Ter 2022-07-26 09:16:48 -03; 13s ago
     Docs: man:libvirtd(8)
           https://libvirt.org
 Main PID: 29488 (libvirtd)
    Tasks: 19 (limit: 32768)
   CGroup: /system.slice/libvirtd.service
           ├─29488 /usr/sbin/libvirtd
           ├─29569 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper
           └─29571 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper
 
Jul 26 09:16:49 mba-vm-03 dnsmasq[29565]: listening on virbr0(#4): 192.168.122.1
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: started, version 2.76 cachesize 150
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: compile time options: IPv6 GNU-getopt DBus no-i18n IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth nettlehash no-DNSSEC loop-detect inotify
Jul 26 09:16:49 mba-vm-03 dnsmasq-dhcp[29569]: DHCP, IP range 192.168.122.2 -- 192.168.122.254, lease time 1h
Jul 26 09:16:49 mba-vm-03 dnsmasq-dhcp[29569]: DHCP, sockets bound exclusively to interface virbr0
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: reading /etc/resolv.conf
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: using nameserver 177.75.176.25#53
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: read /etc/hosts - 2 addresses
Jul 26 09:16:49 mba-vm-03 dnsmasq[29569]: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses
Jul 26 09:16:49 mba-vm-03 dnsmasq-dhcp[29569]: read /var/lib/libvirt/dnsmasq/default.hostsfile

$ sudo nmcli con add type bridge con-name br270 ifname br270
$ sudo nmcli c mod br270 ipv4.method disabled
$ sudo nmcli c mod br270 ipv6.method ignore
$ sudo nmcli c mod br270 bridge.stp no
$ sudo nmcli c add type vlan con-name vlan270 dev enp11s0f1 id 270 master br270

$ sudo mkdir /datastore/imagens
$ sudo virsh pool-define-as --name default --type dir --target /datastore/imagens
$ sudo virsh pool-autostart default
$ sudo virsh pool-start default

$ sudo virsh pool-list
 Nome                 Estado     Auto-iniciar
-------------------------------------------
 default              ativo      sim

$ sudo getfacl -e /datastore/imagens/
$ sudo setfacl -m u:qemu:rx /datastore/imagens/
$ sudo getfacl -e /datastore/imagens/
$ sudo systemctl restart libvirtd

$ sudo virt-install \
--name eve \
--description="EVE Community Edition" \
--ram 32768 \
--vcpus 4 \
--disk size=256,format=qcow2 \
--cdrom /datastore/imagens/isos/eve-com-v5.iso \
--virt-type kvm \
--os-type Linux \
--os-variant ubuntu20.04 \
--network bridge:br270 \
--graphics vnc,listen=0.0.0.0 \
--noautoconsole

$ sudo firewall-cmd --permanent --add-service=vnc-server
$ sudo firewall-cmd --reload

1. How to enable nested virtualization in KVM
2. Nested virtualization in KVM
3. INSTALLATION OF KVM( KERNEL-BASED VIRTUAL MACHINE) VIRTUALIZATION AND EVE-NG IN CENTOS