AlmaLinux 9
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KVM : Install2023/02/28

 
It's Virtualization with KVM ( Kernel-based Virtual Machine ) + QEMU.
It requires that the CPU on your computer that has a feature Intel VT or AMD-V.
[1] Install required packages.
[root@dlp ~]#
dnf -y install qemu-kvm libvirt virt-install
# confirm modules are loaded

[root@dlp ~]#
lsmod | grep kvm

kvm_intel             348160  0
kvm                  1056768  1 kvm_intel
irqbypass              16384  1 kvm

[root@dlp ~]#
systemctl enable --now libvirtd

[2] Configure Bridge networking for KVM virtual machines.
Replace the interface name [enp1s0] for your own environment.
# add bridge [br0]

[root@dlp ~]#
nmcli connection add type bridge autoconnect yes con-name br0 ifname br0

Connection 'br0' (ef307e3b-454f-46bc-a9a8-e2fdc93a2199) successfully added.
# set IP address for [br0]

[root@dlp ~]#
nmcli connection modify br0 ipv4.addresses 10.0.0.30/24 ipv4.method manual

# set Gateway for [br0]

[root@dlp ~]#
nmcli connection modify br0 ipv4.gateway 10.0.0.1

# set DNS for [br0]

[root@dlp ~]#
nmcli connection modify br0 ipv4.dns 10.0.0.10

# set DNS search base for [br0]

[root@dlp ~]#
nmcli connection modify br0 ipv4.dns-search srv.world

# remove the current interface

[root@dlp ~]#
nmcli connection del enp1s0

# add the removed interface again as a member of [br0]

[root@dlp ~]#
nmcli connection add type bridge-slave autoconnect yes con-name enp1s0 ifname enp1s0 master br0
[root@dlp ~]#
reboot
[root@dlp ~]#
ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000
    link/ether 52:54:00:6e:a3:17 brd ff:ff:ff:ff:ff:ff
3: enp7s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:fe:cd:82 brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:2f:8f:e6 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
6: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 52:54:00:6e:a3:17 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global noprefixroute br0
       valid_lft forever preferred_lft forever
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