-#!/bin/bash -x
+#!/bin/bash
+# Copyright (C) 2016 Ian Kelling
-# usage: $0 [TYPE]
-# default distro is the base debian/fedora type. others are fai & arch
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
-action=${1:-default}
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-arch() {
- default
- cat <<'EOF'
-dhcp-option-force=209,boot/syslinux/archiso.cfg
-dhcp-option-force=210,/arch/
-dhcp-boot=/arch/boot/syslinux/lpxelinux.0
+
+
+x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
+
+
+usage() {
+ cat <<EOF
+Usage: ${0##*/} [OPTIONS] [HOST TYPE]
+Configure dnsmasq boot options and fai-chboot if appropriate.
+
+Without HOST TYPE, disable server and fai server.
+
+HOST A hostname known to the dhcp server, or default for all.
+TYPE One of arch, parabola, plain, fai.
+
+-d Don't alter dhcp config. Only make sense for fai type, and on network
+ other than home network.
+-r Don't redeploy fai config. For example, if there is a different host
+ that is mid-install.
+
+-a Don't setup pxe, just Wait for 2 dhcp acks, then disable the pxe
+ server after a delay. First ack is for pxe boot, 2nd ack is
+ for os boot. Sometimes on debian, there is a 3rd one shortly
+ after the 2nd. I can't remember exactly why this caused a
+ problem, but I'm hoping the sleep will take care of it.
+-S sets FAI_ACTION=sysinfo, see myfai-chboot for more info.
+-k Pass -k to myfai-chboot.
+-w Setup pxe, then wait like -a.
+-h|--help Print help and exit
+
+
+Note, when switching between plain and arch or parabola, you will need to
+do something like:
+ssh wrt
+cd /mnt/usb
+rm tftpboot
+ln -s <arch/parabola/debian iso dir> tftpboot
+
+
+Note: Uses GNU getopt options parsing style
EOF
+ exit $1
}
-default() {
- cat <<'EOF'
-enable-tftp
-tftp-root=/mnt/usb/tftpboot
-dhcp-boot=pxelinux.0
+##### begin command line parsing ########
+
+dhcp=true
+redep=true
+acks=2
+wait=false
+chboot_args=()
+temp=$(getopt -l help adrSkwh "$@") || usage 1
+eval set -- "$temp"
+while true; do
+ case $1 in
+ -a) wait=true; set=false; shift ;;
+ -d) dhcp=false; shift ;;
+ -r) redep=false; shift ;;
+ -S) chboot_args+=(-S); shift ;;
+ -k) chboot_args+=(-k); shift ;;
+ -w) wait=true; set=true; shift ;;
+ -h|--help) usage ;;
+ --) shift; break ;;
+ *) echo "$0: Internal error!" ; exit 1 ;;
+ esac
+done
+
+read -r host type <<<"$@"
+
+case $# in
+ 0);;
+ 2)
+ case $type in
+ arch|parabola) cmd=archlike ;;
+ fai) cmd=fai ;;
+ *)
+ echo "$0: error expected type of arch|parabola|fai"
+ echo
+ usage 1
+ ;;
+ esac
+ ;;
+ *)
+ echo "$0: error: expected 0 or 2 arguments"
+ echo
+ usage 1
+ ;;
+esac
+
+
+if $wait && ! $dhcp; then
+ echo "$0: error -w conflicts with -d, choose one or other"
+ exit 1
+fi
+
+
+if [[ $host && $host != default ]]; then
+ host_tag="tag:$host,"
+fi
+
+##### end command line parsing ########
+
+e() {
+ echo "$@"
+ "$@"
+}
+
+archlike() {
+ cat <<EOF
+dhcp-option-force=209,boot/syslinux/${type}iso.cfg
+dhcp-option-force=210,/${type}/
+dhcp-boot=${host_tag}/${type}/boot/syslinux/lpxelinux.0
+EOF
+}
+
+plain() {
+ # if arch based was used before, this additionally needs
+ # the tftp link in /mnt/usb to be changed.
+ cat <<EOF
+dhcp-boot=${host_tag}pxelinux.0
EOF
}
fai() {
- cat <<'EOF'
-dhcp-boot=fai/pxelinux.0,faiserver.lan,faiserver.lan
+ cat <<EOF
+dhcp-boot=${host_tag}pxelinux.0,faiserver.b8.nz,faiserver.b8.nz
EOF
}
+ack-wait() {
+ wait_count=$1
+ if [[ $host ]]; then
+ host_regex=" $host"
+ fi
+ regex=".*DHCPACK.*$host_regex$"
+ i=0
+ while (( i != wait_count )) && read -r line; do
+ if [[ $line =~ $regex ]]; then
+ i=$((i+1))
+ echo $line
+ fi
+ done < <(ssh wrt logread -f)
+ e sleep 20
+}
+
+set-pxe() {
+ $dhcp || return 0
+ echo "$0: updating dnsmasq.conf:"
+ $cmd
+ ${cmd:-:}|ssh wrt "cedit pxe /etc/dnsmasq.conf || /etc/init.d/dnsmasq restart
+$([[ $type == arch || $type == parabola ]] && echo archlike-pxe-mount)"
+}
+
+
+if $set; then
+ set-pxe
+ if [[ $type == fai ]]; then
+ e myfai-chboot ${chboot_args[@]} $host
+ if $redep; then
+ e fai-redep
+ fi
+ else
+ # This will fail if faiserver is not setup, so ignore any
+ # failure and don't bother us about it.
+ myfai-chboot &>/dev/null ||:
+ fi
+fi
+
+if $wait; then
+ # fai's debian jessie 8.5ish does 2 dhcp requests when booting,
+ # roughly 4 seconds apart. Earlier
+ # versions did just 1. Now testing on a vm, it does 1.
+ # bleh.
+ echo "waiting for $acks dhcp acks then disabling pxe"
+ ack-wait $acks
+ type=
+ set-pxe
+
+ # previously tried waiting for one more ack then disabling faiserver,
+ # since it can contain sensitive info, so turn it off when not in use,
+ # but disabling that for now as it's inconvenient to clean this
+ # up and run it in the background etc.
-$action | ssh wrt "cedit pxe-server /etc/dnsmasq.conf || /etc/init.d/dnsmasq restart
-if [[ $action == arch ]]; then arch-pxe-mount; fi"
+ # if [[ $type == fai ]]; then
+ # echo "waiting for 1 dhcp ack then disabling fai server"
+ # ack-wait 1
+ # faiserver-disable
+ # fi
+fi
iankelling.org / git / automated-distro-installer / blobdiff