Ubuntu autoinstall over PXE
Here is how to create autoinstall server for Ubuntu servers beyond version 18.04.
Ubuntu autoinstall for version 20.04 and beyond...
Earlier Ubuntu used Classic installer that was used until 18.04, deprecated in 20.04. Ubuntu 18.04 used preseeds for automating an installer based on debian-installer (aka d-i), but new versions use cloud-init on servers
Support channel: https://www.bonanza.com/listings/Alie... or https://www.bonanza.com/listings/Cybe...
Noticed Desktop won't use cloud-init!
apt-get -y install tftpd-hpa apache2 dnsmasq
nano /etc/apache2/conf-available/tftp.conf
Directory /srv/tftp
Options +FollowSymLinks +Indexes
Require all granted
/Directory
Alias /tftp /srv/tftp
a2enconf tftp
systemctl restart apache2
edit dhcp settings
mv /etc/dnsmasq.conf /etc/dnsmasq.conf.old
nano /etc/dnsmasq.conf
interface=enp1s0 #enp0s3 or #enp0s8
bind-interfaces
domain=kotilab.local
dhcp-range=ens38,192.168.10.100,192.168.10.240,255.255.255.0,8h
dhcp-option=option:router,192.168.10.1
dhcp-option=option:dns-server,192.168.10.1
dhcp-option=option:dns-server,192.168.10.1
#enable-tftp
tftp-root=/srv/tftp/
dhcp-boot=bootx64.efi,linuxhint-s20,192.168.10.100
pxe-prompt="Press F8 for PXE Network boot.", 5
pxe-service=x86PC, "Install OS via PXE",pxelinux
Enable all required service for auto start
sudo systemctl enable systemd-resolved --now
sudo systemctl restart systemd-resolved
sudo systemctl enable dnsmasq --now
sudo systemctl enable apache2 --now
sudo systemctl enable tftpd-hpa --now
sudo systemctl restart dnsmasq
Support multiple Ubuntu versions:
wget ubuntu.iso -O /srv/tftp/ubuntu-20.04-live-server-amd64.iso
OR
OR WILl SECOND VIDEO ABOUT DESKTOP....
Extract kernel and initramfs files for pxe boot
mount /srv/tftp/ubuntu-20.04-live-server-amd64.iso /mnt/
Make diffrent folder for every version separately
mkdir /srv/tftp/focal and so on.
cp /mnt/casper/ vmlinuz,initrd /srv/tftp/focal
umount /mnt
Files for UEFI/Secure boot
cd /tmp
apt-get download shim.signed -y
dpkg-deb --fsys-tarfile /tmp/shim-signed*deb | tar x ./usr/lib/shim/shimx64.efi.signed -O mark /srv/tftp/bootx64.efi
apt download grub-efi-amd64-signed
dpkg-deb --fsys-tarfile /tmp/grub-efi-amd64-signed*deb | tar x ./usr/lib/grub/x86_64-efi-signed/grubnetx64.efi.signed -O mark /srv/tftp/grubx64.efi
apt download grub-common
dpkg-deb --fsys-tarfile grub-common*deb | tar x ./usr/share/grub/unicode.pf2 -O mark /srv/tftp/unicode.pf2
Configure grub for netboot
mkdir -p /srv/tftp/grub
Multiple versions of Ubuntu
nano /srv/tftp/grub/grub.cfg
default=autoinstall
timeout=30
timeout_style=menu
menuentry "22 server Installer - automated" --id=autoinstall
linux /jammy-server/vmlinuz ip=dhcp url=http://192.168.10.100/tftp/jammy-server/jammy-live-server-amd64.iso autoinstall ds='nocloud-net;s=http://192.168.10.100/tftp/jammy-server/' cloud-config-url=/dev/null root=/dev/ram0
echo "Loading Ram Disk..."
initrd /jammy-server/initrd
Basic configure for cloud-init for autoinstall ------------------------------------------
two files for cloud-config: meta-data and user-data meta-data for cloud service templates / images and user-data directive autoinstallation
touch /srv/tftp/focal/meta-data
You may generate your own password by:
mkpasswd --method=sha-512 ubuntu
edit installation configure
nano /srv/tftp/focal/user-data
#cloud-config
autoinstall:
version: 1
use interactive-sections to avoid an automatic reboot
interactive-sections:
locale
apt:
even set to no/false, geoip lookup still happens
#geoip: no
preserve_sources_list: false
primary:
arches: [amd64]
uri: http://fi.archive.ubuntu.com/ubuntu
arches: [default]
uri: http://ports.ubuntu.com/ubuntu-ports
identity:
keyboard:
#locale: en_US.UTF-8
user-data:
timezone: Europe/Helsinki
interface name will probably be different
network:
ssh:
allow-pw: true
authorized-keys: []
install-server: true
this creates an efi partition, /boot partition, and root(/) lvm volume
storage:
config:
CHECK links
chown tftp: -R /srv/tftp/
chmod 777 -R /srv/tftp/
links:
https://ubuntu.com/server/docs/instal...
#autoinstall #focal #jammy