workbench-script/pxe/install-pxe.sh

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#!/bin/sh
# Copyright (c) 2024 Pedro <copyright@cas.cat>
# SPDX-License-Identifier: AGPL-3.0-or-later
set -e
set -u
# DEBUG
set -x
install_dependencies() {
apt update
apt install -y wget dnsmasq nfs-kernel-server
}
backup_file() {
target="${1}"
ts="$(date +'%Y-%m-%d_%H-%M-%S')"
if [ -f "${target}" ]; then
cp -a "${target}" "${target}_bak_${ts}"
fi
}
install_nfs() {
backup_file /etc/exports
cat > /etc/exports <<END
${nfs_path} ${nfs_allowed_lan}(rw,sync,no_subtree_check,no_root_squash)
END
mkdir -p "${nfs_path}"
}
install_tftp() {
cat > /etc/dnsmasq.d/pxe-tftp <<END
port=0
dhcp-range=${nfs_allowed_lan%/*},proxy
dhcp-boot=pxelinux.0
pxe-service=x86PC,"Network Boot",pxelinux
enable-tftp
tftp-root=${tftp_path}
END
}
install_netboot() {
# if you want to refresh install, remove or move dir
if [ ! -d "${tftp_path}" ]; then
mkdir -p "${tftp_path}"
cd "${tftp_path}"
wget http://ftp.debian.org/debian/dists/${VERSION_CODENAME}/main/installer-amd64/current/images/netboot/netboot.tar.gz
tar xvf netboot.tar.gz
cat > "${tftp_path}/pxelinux.cfg/default" <<END
default wb
label wb
KERNEL debian-installer/amd64/linux
INITRD debian-installer/amd64/initd.gz
APPEND ip=dhcp netboot=nfs nfsroot=${server_ip}:${nfs_path}/ boot=live text forcepae
END
fi
}
init_config() {
# get where the script is
cd "$(dirname "${0}")"
if [ -f ./.env ]; then
. ./.env
else
echo 'PXE: WARNING: .env does not exist yet, cannot read config from there. You can take inspiration with file .env.example'
fi
VERSION_CODENAME="${VERSION_CODENAME:-bookworm}"
tftp_path="${tftp_path:-/srv/pxe-tftp}"
server_ip="${server_ip}"
nfs_path="${nfs_path:-/srv/pxe-images}"
}
main() {
init_config
install_dependencies
install_netboot
install_tftp
install_nfs
echo "PXE: Installation finished"
}
main "${@}"
# written in emacs
# -*- mode: shell-script; -*-