#!/bin/bash
+# Copyright (C) 2016 Ian Kelling
+
+# 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.
+
+# 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.
+
+# 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.
# Setup dhcp server to point to tftp server,
# and depending on the type, setup the tftp server.
usage() {
cat <<EOF
-Usage: ${0##*/} [OPTIONS] TYPE [HOST]
-One line description
+Usage: ${0##*/} [OPTIONS] [HOST TYPE]
+Configure dnsmasq pxe server options and fai-chboot if appropriate.
+
+Without HOST TYPE, disable pxe server and fai server.
-TYPE is one of arch, plain, fai, or : for no pxe server.
-HOST makes the pxe server only for that specific host
+HOST A hostname known to the dhcp server, or default for all.
+TYPE One of arch, plain, fai.
+
+-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 Pass -S to fai-chboot.
+-w Setup pxe, then wait like -a.
-h|--help Print help and exit
--- Subsequent arguments are never treated as options
--p Persist. Otherwise, wait for 2 dhcp acks then remove.
+
+
+Note, when switching between plain and arch, you will need to
+do something like:
+ssh wrt
+cd /mnt/usb
+rm tftpboot
+ln -s <arch/debian iso dir> tftpboot
+
+
+Note: Uses GNU getopt options parsing style
EOF
exit $1
}
##### begin command line parsing ########
-persist=false
-args=()
-while [[ $1 ]]; do
+redep=true
+acks=2
+wait=false
+temp=$(getopt -l help harSw "$@") || usage 1
+eval set -- "$temp"
+while true; do
case $1 in
- --) shift; break ;;
+ -a) wait=true; set=false; shift ;;
+ -r) redep=false; shift ;;
+ -S) chboot_arg=-S; shift ;;
+ -w) wait=true; set=true; shift ;;
-h|--help) usage ;;
- -p) persist=true; shift ;;
- *) args+=("$1"); shift ;;
+ --) shift; break ;;
+ *) echo "$0: Internal error!" ; exit 1 ;;
esac
done
-args+=("$@")
-
-read type host <<<"${args[@]}"
+read -r host type <<<"$@"
-if [[ ! $type ]]; then
- echo "$0: error: exptected 1 argument of type"
- usage 1
-fi
+case $# in
+ 0|2);;
+ *)
+ echo "$0: error: expected 0 or 2 arguments"
+ echo
+ usage 1
+ ;;
+esac
-if [[ $host ]]; then
+if [[ $host && $host != default ]]; then
host_tag="tag:$host,"
fi
-case $type in
- :|true) persist=true ;;
-esac
-
##### end command line parsing ########
-sv() {
+e() {
echo "$@"
"$@"
}
fai() {
cat <<EOF
-$set_host_tag
-dhcp-boot=${host_tag}fai/pxelinux.0,faiserver.lan,faiserver.lan
+dhcp-boot=${host_tag}pxelinux.0,faiserver.lan,faiserver.lan
EOF
}
-echo "setting config type: $type"
-$type | ssh wrt "cedit pxe-server /etc/dnsmasq.conf || /etc/init.d/dnsmasq restart #
-if [[ $type == arch ]]; then arch-pxe-mount; fi"
-
-
-if ! $persist; then
+ack-wait() {
+ wait_count=$1
if [[ $host ]]; then
host_regex=" $host"
fi
regex=".*DHCPACK.*$host_regex$"
i=0
- tmp=$(mktemp)
- while (( i != 2 )) && read line; do
+ while (( i != wait_count )) && read -r line; do
if [[ $line =~ $regex ]]; then
i=$((i+1))
echo $line
fi
done < <(ssh wrt logread -f)
- sv sleep 5
- sv "$BASH_SOURCE" :
+ e sleep 20
+}
+
+set-pxe() {
+ ${type:-:}|ssh wrt "cedit pxe /etc/dnsmasq.conf || /etc/init.d/dnsmasq restart
+$([[ $type == arch ]] && echo arch-pxe-mount)"
+}
+
+
+if $set; then
+ set-pxe
+ if [[ $type == fai ]]; then
+ e myfai-chboot $chboot_arg $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.
+
+ # 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