2 # Copyright (C) 2016 Ian Kelling
4 # This program is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU General Public License
6 # as published by the Free Software Foundation; either version 2
7 # of the License, or (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 x
="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
25 Usage: ${0##*/} [OPTIONS] [HOST] [TYPE]
26 Configure dnsmasq boot options and fai-chboot if appropriate. This is
27 not general purpose, it has code specific to dhcp servers I run.
29 Without TYPE, disable server and fai server. In that case, HOST is only
30 needed for fsf office network.
32 HOST A hostname known to the dhcp server, or default for all.
33 TYPE One of arch, parabola, plain, fai.
35 -a Don't setup pxe, just Wait for 2 dhcp acks, then disable the pxe
36 server after a delay. First ack is for pxe boot, 2nd ack is
37 for os boot. Sometimes on debian, there is a 3rd one shortly
38 after the 2nd. I can't remember exactly why this caused a
39 problem, but I'm hoping the sleep will take care of it.
40 -d Don't alter dhcp config. Only make sense for fai type, and on network
41 other than home or fsf.
42 -k Pass -k to myfai-chboot.
43 -r Don't redeploy fai config. For example, if there is a different host
46 -S sets FAI_ACTION=sysinfo, see myfai-chboot for more info.
47 -w Setup pxe, then wait like -a.
48 -h|--help Print help and exit
51 Note, when switching between plain and arch or parabola, you will need to
56 ln -s <arch/parabola/debian iso dir> tftpboot
59 Note: Uses GNU getopt options parsing style
64 ##### begin command line parsing ########
77 temp
=$
(getopt
-l help adkrSwh
"$@") || usage
1
81 -a) wait=true
; set=false
; shift ;;
82 -d) dhcp
=false
; shift ;;
83 -k) chboot_args
+=(-k); shift ;;
84 -r) redep
=false
; shift ;;
85 -S) chboot_args
+=(-S); shift ;;
86 -w) wait=true
; set=true
; shift ;;
89 *) echo "$0: Internal error!" ; exit 1 ;;
93 read -r host type <<<"$@"
99 arch|parabola
) cmd
=archlike
;;
102 echo "$0: error expected type of arch|parabola|fai"
109 echo "$0: error: expected 0-2 arguments"
116 if $wait && ! $dhcp; then
117 echo "$0: error -w conflicts with -d, choose one or other"
122 if [[ $host && $host != default
]]; then
123 host_tag
="tag:$host,"
126 ##### end command line parsing ########
135 dhcp-option-force=209,boot/syslinux/${type}iso.cfg
136 dhcp-option-force=210,/${type}/
137 dhcp-boot=${host_tag}/${type}/boot/syslinux/lpxelinux.0
142 # if arch based was used before, this additionally needs
143 # the tftp link in /mnt/usb to be changed.
145 dhcp-boot=${host_tag}pxelinux.0
151 dhcp-boot=${host_tag}pxelinux.0,faiserver.b8.nz,faiserver.b8.nz
157 wait_cmd
="ssh tarantula tail -n0 -f /var/log/syslog"
159 wait_cmd
="ssh wrt logread -f"
164 host_regex
=" $(getent hosts kw | awk '{print $1}' | sed 's/\./\\./g')"
169 regex
=".*DHCPACK.*$host_regex\b"
171 while (( i
!= wait_count
)) && read -r line
; do
172 if [[ $line =~
$regex ]]; then
176 done < <($wait_cmd ||
:) # tail returns 2 it seems
183 if [[ ! $cmd ]]; then
184 echo "$0: removing pxe for $host on tarantula"
185 ssh tarantula bash
-e <<EOF
186 sed -ri 's/^( *host +$host *\{).*/\1/' /etc/dhcp3/dhcpd.conf
187 /etc/init.d/dhcp3-server restart
189 elif [[ $cmd == fai
]]; then
190 echo "$0: adding pxe for $host on tarantula"
191 ssh tarantula bash
-e <<EOF
192 sed -ri 's/^( *host +$host *\{).*/\1 next-server faiserver.office.fsf.org; filename "pxelinux.0";/' /etc/dhcp3/dhcpd.conf
193 /etc/init.d/dhcp3-server restart
197 echo "$0: updating dnsmasq.conf:"
199 ${cmd:-:}|
ssh wrt
"cedit pxe /etc/dnsmasq.conf || /etc/init.d/dnsmasq restart
200 $([[ $type == arch || $type == parabola ]] && echo archlike-pxe-mount)"
207 if [[ $type == fai
]]; then
208 e myfai-chboot
${chboot_args[@]} $host
213 # This will fail if faiserver is not setup, so ignore any
214 # failure and don't bother us about it.
215 myfai-chboot
&>/dev
/null ||
:
220 # fai's debian jessie 8.5ish does 2 dhcp requests when booting,
221 # roughly 4 seconds apart. Earlier
222 # versions did just 1. Now testing on a vm, it does 1.
224 echo "waiting for $acks dhcp acks then disabling pxe"
230 # previously tried waiting for one more ack then disabling faiserver,
231 # since it can contain sensitive info, so turn it off when not in use,
232 # but disabling that for now as it's inconvenient to clean this
233 # up and run it in the background etc.
235 # if [[ $type == fai ]]; then
236 # echo "waiting for 1 dhcp ack then disabling fai server"