KVM : Install2021/11/10

	This is the Virtualization configuration 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             331776  0
kvm                  1019904  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' (80672c58-969e-4e7e-9e09-c4baa6117afb) 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

# restart

[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:aa:86:00 brd ff:ff:ff:ff:ff:ff
3: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 9a:7e:5f:73:79:d6 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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