PXE Boot Ubuntu

readme.sh

#!/bin/sh
set -x

# Just for note. shell scripts are easier than README.md

apt install dnsmasq
# don't need to run it forever
systemctl disable dnsmasq.service
# most systems has systemd running on port 53 which can be an issue.
# maybe disable dns server on dnsmasq?
systemctl stop systemd-resolved

# setup tftp root
mkdir -p /var/lib/tftpboot
# get netboot files, maybe get latest from http://cdimage.ubuntu.com/netboot/
curl -Lfs http://archive.ubuntu.com/ubuntu/dists/eoan/main/installer-amd64/current/images/netboot/netboot.tar.gz | tar -xzvC /var/lib/tftpboot

# configure dnsmasq
cat > dnsmasq.conf <<EOF
interface=enp7s1,lo
#bind-interfaces
domain=my.lan
# DHCP range-leases
dhcp-range= enp7s1,192.168.0.1,192.168.0.253,255.255.255.0,1h
# PXE
dhcp-boot=pxelinux.0,pxeserver,192.168.0.20
# Gateway
dhcp-option=3,192.168.0.1
# DNS
dhcp-option=6,1.1.1.1, 8.8.8.8
server=1.1.1.1
# Broadcast Address
# dhcp-option=28,10.0.0.255
# NTP Server
#dhcp-option=42,0.0.0.0

pxe-prompt="Press F8 for menu.", 60
pxe-service=x86PC, "PXE boot from network server 192.168.0.20", pxelinux
enable-tftp
tftp-root=/var/lib/tftpboot
log-dhcp
log-queries
log-facility=/tmp/dnsmasq.log
EOF

dnsmasq -C dnsmasq.conf
tail -f /tmp/dnsmasq.conf