KVM
Customize qcow2 images
Download the .img first
virt-customize --install ethtool,traceroute,iputils-ping,socat,dnsutils,tcpdump,tshark,iperf,iperf3,mtr,fping,lldpd --root-password password:potato123 -a 22.04-server.img
Sysprep is necessary to remove any static information from a VM (hostname, ssh host keys, interfaces MAC/config). Similar to Windows sysprep.
In this case, we do not remove the ssh-hostkeys because of possible issues with ssh access if the keys are not re-generated.
virt-sysprep --operations defaults,-ssh-hostkeys -a 22.04-server.img
Using uvtools for Ubuntu minimal images
Download the images
uvt-kvm uvt-simplestreams-libvirt sync --source https://cloud-images.ubuntu.com/minimal/daily/ release=bionic arch=amd64
uvt-kvm create --packages iperf,iperf3,dnsutils,tcpdump,--disk 5 --password potato123 --memory 2048 --cpu 2 myminimalvm-jammy release=jammy arch=amd64 "label=minimal daily"
Download images are in /var/lib/uvtool/libvirt/images/
Get list of os-variants valid for KVM
ldumont@kvm01:~$ osinfo-query os | grep -i centos
centos6.0 | CentOS 6.0 | 6.0 | http://centos.org/centos/6.0
centos6.1 | CentOS 6.1 | 6.1 | http://centos.org/centos/6.1
centos6.10 | CentOS 6.10 | 6.10 | http://centos.org/centos/6.10
centos6.2 | CentOS 6.2 | 6.2 | http://centos.org/centos/6.2
centos6.3 | CentOS 6.3 | 6.3 | http://centos.org/centos/6.3
centos6.4 | CentOS 6.4 | 6.4 | http://centos.org/centos/6.4
centos6.5 | CentOS 6.5 | 6.5 | http://centos.org/centos/6.5
centos6.6 | CentOS 6.6 | 6.6 | http://centos.org/centos/6.6
centos6.7 | CentOS 6.7 | 6.7 | http://centos.org/centos/6.7
centos6.8 | CentOS 6.8 | 6.8 | http://centos.org/centos/6.8
centos6.9 | CentOS 6.9 | 6.9 | http://centos.org/centos/6.9
centos7.0 | CentOS 7.0 | 7.0 | http://centos.org/centos/7.0
Create PXE only virsh domain
sudo virt-install --name test-ubuntu \
--ram 4096 --vcpus 2 \
--disk path=/var/lib/libvirt/images/test-ubuntu,bus=virtio,size=50 \
--noautoconsole --graphics vnc \
--cdrom=/var/lib/libvirt/boot/mini.iso \
--network bridge:br0 \
--network bridge:br1 \
--os-variant ubuntu18.04
sudo virt-install --name ooo-director \
--ram 18432 --vcpus 8 \
--disk path=/var/lib/libvirt/images/ooo-director,bus=virtio,size=50 \
--noautoconsole --graphics vnc \
--cdrom=/var/lib/libvirt/boot/CentOS-7-x86_64-Minimal-1908.iso \
--network bridge:br1 \
--network bridge:br0 \
--os-variant centos7.0
sudo virt-install --name ooo-controller001 \
--ram 9216 --vcpus 4 \
--disk path=/var/lib/libvirt/images/ooo-controller001.qcow2,bus=virtio,size=50 \
--pxe --noautoconsole --graphics vnc \
--network bridge:br1 \
--network bridge:br0 \
--os-variant centos7.0
sudo virt-install --name ooo-controller002 \
--ram 9216 --vcpus 4 \
--disk path=/var/lib/libvirt/images/ooo-controller002.qcow2,bus=virtio,size=50 \
--pxe --noautoconsole --graphics vnc \
--network bridge:br1 \
--network bridge:br0 \
--os-variant centos7.0
sudo virt-install --name ooo-controller003 \
--ram 9216 --vcpus 4 \
--disk path=/var/lib/libvirt/images/ooo-controller003.qcow2,bus=virtio,size=50 \
--pxe --noautoconsole --graphics vnc \
--network bridge:br1 \
--network bridge:br0 \
--os-variant centos7.0
sudo virt-install --name ooo-compute001 \
--ram 9216 --vcpus 4 \
--disk path=/var/lib/libvirt/images/ooo-compute001,bus=virtio,size=50 \
--pxe --noautoconsole --graphics vnc \
--network bridge:br1 \
--network bridge:br0 \
--os-variant centos7.0
Bridge physical interface for VM access.
#Install the bridge-utils package
apt-get install bridge-utils
#Create the two bridges
brctl addbr br1
brctl addbr br2
# In /etc/network/interfaces
# Use old eth0 config for br0, plus bridge stuff
#loopback
auto lo
iface lo inet loopback
auto br0
auto br1
iface br0 inet static
address 10.10.99.62
gateway 10.10.99.1
netmask 255.255.255.0
dns-nameservers 10.10.99.1
dns-search cmaker.studio
bridge_ports ens18
bridge_stp off
bridge_maxwait 0
bridge_fd 0
iface br1 inet manual
bridge_ports ens19
bridge_stp off
bridge_maxwait 0
bridge_fd 0
Show VNC information - port is 590$(VNCDISPLAY_INDEX)
root@kvm01:~# virsh vncdisplay ooo-controller001
:0
root@kvm01:~# virsh vncdisplay ooo-controller002
:1
root@kvm01:~# virsh vncdisplay ooo-controller003
:2
root@kvm01:~# netstat -punta | grep 590
tcp 0 0 0.0.0.0:5902 0.0.0.0:* LISTEN 2691/qemu-system-x8
tcp 0 0 0.0.0.0:5900 0.0.0.0:* LISTEN 2559/qemu-system-x8
tcp 0 0 0.0.0.0:5901 0.0.0.0:* LISTEN 2649/qemu-system-x8
VBMC
Installation
yum install gcc python-devel
pip install --upgrade setuptools
pip install virtualbmc
vbmc add ooo-controller001 --port 16001 --username test --password secret
vbmc add ooo-controller002 --port 16002 --username test --password secret
vbmc add ooo-controller003 --port 16003 --username test --password secret
vbmc add ooo-compute001 --port 16004 --username test --password secret
vbmc start ooo-controller001
vbmc start ooo-controller002
vbmc start ooo-controller003
vbmc start ooo-compute001
Enable serial connection over virsh
#FROM THE GUEST VM
sudo systemctl enable [email protected]
sudo systemctl start [email protected]
#FROM THE KVM HOST
sudo virsh console $DOMAIN_NAME
#OR GET THE DOMAIN ID from `virsh list`
sudo virsh console $KVM_DOMAIN_ID