root / tools / kvm-ifup-os.in @ 65b526e7
History | View | Annotate | Download (8.8 kB)
1 | dc1fe8df | Jose A. Lopes | #!/bin/bash |
---|---|---|---|
2 | dc1fe8df | Jose A. Lopes | # |
3 | dc1fe8df | Jose A. Lopes | |
4 | dc1fe8df | Jose A. Lopes | # Copyright (C) 2014 Google Inc. |
5 | dc1fe8df | Jose A. Lopes | # |
6 | dc1fe8df | Jose A. Lopes | # This program is free software; you can redistribute it and/or modify |
7 | dc1fe8df | Jose A. Lopes | # it under the terms of the GNU General Public License as published by |
8 | dc1fe8df | Jose A. Lopes | # the Free Software Foundation; either version 2 of the License, or |
9 | dc1fe8df | Jose A. Lopes | # (at your option) any later version. |
10 | dc1fe8df | Jose A. Lopes | # |
11 | dc1fe8df | Jose A. Lopes | # This program is distributed in the hope that it will be useful, but |
12 | dc1fe8df | Jose A. Lopes | # WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | dc1fe8df | Jose A. Lopes | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | dc1fe8df | Jose A. Lopes | # General Public License for more details. |
15 | dc1fe8df | Jose A. Lopes | # |
16 | dc1fe8df | Jose A. Lopes | # You should have received a copy of the GNU General Public License |
17 | dc1fe8df | Jose A. Lopes | # along with this program; if not, write to the Free Software |
18 | dc1fe8df | Jose A. Lopes | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 | dc1fe8df | Jose A. Lopes | # 02110-1301, USA. |
20 | dc1fe8df | Jose A. Lopes | |
21 | dc1fe8df | Jose A. Lopes | # This script is a hook called to configure new TAP network interfaces |
22 | dc1fe8df | Jose A. Lopes | # used for instance communication, and it should be called whenever a |
23 | dc1fe8df | Jose A. Lopes | # new instance is started. |
24 | dc1fe8df | Jose A. Lopes | # |
25 | dc1fe8df | Jose A. Lopes | # This script configures the new interface but it also performs |
26 | dc1fe8df | Jose A. Lopes | # maintenance on the network interfaces that have been configured |
27 | dc1fe8df | Jose A. Lopes | # before, by checking whether those TAP interfaces still exist, etc. |
28 | dc1fe8df | Jose A. Lopes | # |
29 | dc1fe8df | Jose A. Lopes | # This script also controls the DHCP server that leases IP address for |
30 | dc1fe8df | Jose A. Lopes | # instances, i.e., the NICs inside the instances, not the TAP |
31 | dc1fe8df | Jose A. Lopes | # interfaces. The DHCP server is started and restarted (or reHUPed) |
32 | dc1fe8df | Jose A. Lopes | # as necessary and always with up-to-date configuration files. |
33 | dc1fe8df | Jose A. Lopes | # |
34 | dc1fe8df | Jose A. Lopes | # This script expects the following environment variables |
35 | dc1fe8df | Jose A. Lopes | # |
36 | dc1fe8df | Jose A. Lopes | # INTERFACE: network interface name to be configured |
37 | dc1fe8df | Jose A. Lopes | # MODE: networking mode for 'INTERFACE' (must be 'routed') |
38 | dc1fe8df | Jose A. Lopes | # MAC: MAC address for 'INTERFACE' |
39 | dc1fe8df | Jose A. Lopes | # IP: IP address for 'INTERFACE' |
40 | dc1fe8df | Jose A. Lopes | |
41 | dc1fe8df | Jose A. Lopes | source @PKGLIBDIR@/net-common |
42 | dc1fe8df | Jose A. Lopes | |
43 | dc1fe8df | Jose A. Lopes | readonly NETMASK=255.255.255.255 |
44 | dc1fe8df | Jose A. Lopes | readonly DNSMASQ_CONF=/var/run/ganeti/dnsmasq.conf |
45 | dc1fe8df | Jose A. Lopes | readonly DNSMASQ_HOSTS=/var/run/ganeti/dnsmasq.hosts |
46 | dc1fe8df | Jose A. Lopes | readonly DNSMASQ_PID=/var/run/ganeti/dnsmasq.pid |
47 | dc1fe8df | Jose A. Lopes | |
48 | dc1fe8df | Jose A. Lopes | # join intercalates a sequence of arguments using the given separator |
49 | dc1fe8df | Jose A. Lopes | function join { |
50 | dc1fe8df | Jose A. Lopes | local IFS="$1" |
51 | dc1fe8df | Jose A. Lopes | shift |
52 | dc1fe8df | Jose A. Lopes | echo "$*" |
53 | dc1fe8df | Jose A. Lopes | } |
54 | dc1fe8df | Jose A. Lopes | |
55 | dc1fe8df | Jose A. Lopes | # restart_dnsmasq restarts the DHCP server dnsmasq with the (possibly |
56 | dc1fe8df | Jose A. Lopes | # up-to-date) configuration file. |
57 | dc1fe8df | Jose A. Lopes | # |
58 | dc1fe8df | Jose A. Lopes | # If all instances have been terminated, which means there are no more |
59 | dc1fe8df | Jose A. Lopes | # TAP network interfaces to monitor or IP addresses to lease, the DHCP |
60 | dc1fe8df | Jose A. Lopes | # server is terminated through 'SIGTERM'. |
61 | dc1fe8df | Jose A. Lopes | # |
62 | dc1fe8df | Jose A. Lopes | # If there are still instances running, then: |
63 | dc1fe8df | Jose A. Lopes | # - if the DHCP server is running, a 'SIGHUP' will be sent to the |
64 | dc1fe8df | Jose A. Lopes | # dnsmasq process which will cause the configuration file to be |
65 | dc1fe8df | Jose A. Lopes | # re-read, while keeping the process running |
66 | dc1fe8df | Jose A. Lopes | # - if the DHCP server is not running, it will be started, and the |
67 | dc1fe8df | Jose A. Lopes | # configuration file will be passed it |
68 | dc1fe8df | Jose A. Lopes | function restart_dnsmasq { |
69 | dc1fe8df | Jose A. Lopes | SIGNAL= |
70 | dc1fe8df | Jose A. Lopes | |
71 | dc1fe8df | Jose A. Lopes | if [ -z "$ALIVE_INTERFACES" -o -z "$ALIVE_LEASES" ] |
72 | dc1fe8df | Jose A. Lopes | then |
73 | dc1fe8df | Jose A. Lopes | SIGNAL=TERM |
74 | dc1fe8df | Jose A. Lopes | else |
75 | dc1fe8df | Jose A. Lopes | SIGNAL=HUP |
76 | dc1fe8df | Jose A. Lopes | fi |
77 | dc1fe8df | Jose A. Lopes | |
78 | dc1fe8df | Jose A. Lopes | RUNNING= |
79 | dc1fe8df | Jose A. Lopes | |
80 | dc1fe8df | Jose A. Lopes | if [ -f "$DNSMASQ_PID" ] |
81 | dc1fe8df | Jose A. Lopes | then |
82 | dc1fe8df | Jose A. Lopes | PID=$(cat $DNSMASQ_PID) |
83 | dc1fe8df | Jose A. Lopes | if [ -n "$PID" ] && ps -p "$PID" |
84 | dc1fe8df | Jose A. Lopes | then |
85 | dc1fe8df | Jose A. Lopes | RUNNING=yes |
86 | dc1fe8df | Jose A. Lopes | fi |
87 | dc1fe8df | Jose A. Lopes | fi |
88 | dc1fe8df | Jose A. Lopes | |
89 | dc1fe8df | Jose A. Lopes | KILLED= |
90 | dc1fe8df | Jose A. Lopes | |
91 | dc1fe8df | Jose A. Lopes | if [ "$RUNNING" = yes ] |
92 | dc1fe8df | Jose A. Lopes | then |
93 | dc1fe8df | Jose A. Lopes | kill -$SIGNAL $PID |
94 | dc1fe8df | Jose A. Lopes | |
95 | dc1fe8df | Jose A. Lopes | if [ "$SIGNAL" = TERM ] |
96 | dc1fe8df | Jose A. Lopes | then |
97 | dc1fe8df | Jose A. Lopes | KILLED=yes |
98 | dc1fe8df | Jose A. Lopes | fi |
99 | dc1fe8df | Jose A. Lopes | fi |
100 | dc1fe8df | Jose A. Lopes | |
101 | dc1fe8df | Jose A. Lopes | if [ "$KILLED" = yes ] |
102 | dc1fe8df | Jose A. Lopes | then |
103 | dc1fe8df | Jose A. Lopes | rm -f $DNSMASQ_PID |
104 | dc1fe8df | Jose A. Lopes | fi |
105 | dc1fe8df | Jose A. Lopes | |
106 | dc1fe8df | Jose A. Lopes | if [ "$RUNNING" != yes -o "$KILLED" == yes ] |
107 | dc1fe8df | Jose A. Lopes | then |
108 | dc1fe8df | Jose A. Lopes | if [ -n "$ALIVE_INTERFACES" -a -n "$ALIVE_LEASES" ] |
109 | dc1fe8df | Jose A. Lopes | then |
110 | dc1fe8df | Jose A. Lopes | dnsmasq -C $DNSMASQ_CONF |
111 | dc1fe8df | Jose A. Lopes | fi |
112 | dc1fe8df | Jose A. Lopes | fi |
113 | dc1fe8df | Jose A. Lopes | |
114 | dc1fe8df | Jose A. Lopes | return 0 |
115 | dc1fe8df | Jose A. Lopes | } |
116 | dc1fe8df | Jose A. Lopes | |
117 | dc1fe8df | Jose A. Lopes | # Check that environment variable 'INTERFACE' exists. |
118 | dc1fe8df | Jose A. Lopes | # |
119 | dc1fe8df | Jose A. Lopes | # This environment variable holds the TAP network interface that |
120 | dc1fe8df | Jose A. Lopes | # should be configured by this script. Ganeti always passes it, |
121 | dc1fe8df | Jose A. Lopes | # but... :) |
122 | dc1fe8df | Jose A. Lopes | if [ -z "$INTERFACE" ] |
123 | dc1fe8df | Jose A. Lopes | then |
124 | dc1fe8df | Jose A. Lopes | echo kvm-vif-bridge: Failed to configure communication mechanism \ |
125 | dc1fe8df | Jose A. Lopes | interface because the \'INTERFACE\' environment variable was \ |
126 | dc1fe8df | Jose A. Lopes | not specified to the \'kvm-vif-bridge\' script |
127 | dc1fe8df | Jose A. Lopes | exit 1 |
128 | dc1fe8df | Jose A. Lopes | fi |
129 | dc1fe8df | Jose A. Lopes | |
130 | dc1fe8df | Jose A. Lopes | # Check that environment variable 'MODE' exists. |
131 | dc1fe8df | Jose A. Lopes | # |
132 | dc1fe8df | Jose A. Lopes | # See comment about environment variable 'INTERFACE'. |
133 | dc1fe8df | Jose A. Lopes | if [ -z "$MODE" ] |
134 | dc1fe8df | Jose A. Lopes | then |
135 | dc1fe8df | Jose A. Lopes | echo kvm-vif-bridge: Failed to configure communication mechanism \ |
136 | dc1fe8df | Jose A. Lopes | interface because the \'MODE\' environment variable was \ |
137 | dc1fe8df | Jose A. Lopes | not specified to the \'kvm-vif-bridge\' script |
138 | dc1fe8df | Jose A. Lopes | exit 1 |
139 | dc1fe8df | Jose A. Lopes | fi |
140 | dc1fe8df | Jose A. Lopes | |
141 | dc1fe8df | Jose A. Lopes | # Check whether the interface being configured has instance |
142 | dc1fe8df | Jose A. Lopes | # communication enabled, otherwise exit this script. |
143 | dc1fe8df | Jose A. Lopes | if ! is_instance_communication_tap; then exit 0; fi |
144 | dc1fe8df | Jose A. Lopes | |
145 | dc1fe8df | Jose A. Lopes | # Check that environment variable 'MAC' exists. |
146 | dc1fe8df | Jose A. Lopes | # |
147 | dc1fe8df | Jose A. Lopes | # See comment about environment variable 'INTERFACE'. |
148 | dc1fe8df | Jose A. Lopes | if [ -z "$MAC" ] |
149 | dc1fe8df | Jose A. Lopes | then |
150 | dc1fe8df | Jose A. Lopes | echo kvm-vif-bridge: Failed to configure communication mechanism \ |
151 | dc1fe8df | Jose A. Lopes | interface because the \'MAC\' environment variable was \ |
152 | dc1fe8df | Jose A. Lopes | not specified to the \'kvm-vif-bridge\' script |
153 | dc1fe8df | Jose A. Lopes | exit 1 |
154 | dc1fe8df | Jose A. Lopes | fi |
155 | dc1fe8df | Jose A. Lopes | |
156 | dc1fe8df | Jose A. Lopes | # Check that environment variable 'IP' exists. |
157 | dc1fe8df | Jose A. Lopes | # |
158 | dc1fe8df | Jose A. Lopes | # See comment about environment variable 'INTERFACE'. |
159 | dc1fe8df | Jose A. Lopes | if [ -z "$IP" ] |
160 | dc1fe8df | Jose A. Lopes | then |
161 | dc1fe8df | Jose A. Lopes | echo kvm-vif-bridge: Failed to configure communication mechanism \ |
162 | dc1fe8df | Jose A. Lopes | interface because the \'IP\' environment variable was \ |
163 | dc1fe8df | Jose A. Lopes | not specified to the \'kvm-vif-bridge\' script |
164 | dc1fe8df | Jose A. Lopes | exit 1 |
165 | dc1fe8df | Jose A. Lopes | fi |
166 | dc1fe8df | Jose A. Lopes | |
167 | dc1fe8df | Jose A. Lopes | # Configure the TAP interface |
168 | dc1fe8df | Jose A. Lopes | # |
169 | dc1fe8df | Jose A. Lopes | # Ganeti defers the configuration of instance network interfaces to |
170 | dc1fe8df | Jose A. Lopes | # hooks, therefore, we must configure the interface's network address, |
171 | dc1fe8df | Jose A. Lopes | # netmask, and IP address. |
172 | dc1fe8df | Jose A. Lopes | # |
173 | dc1fe8df | Jose A. Lopes | # The TAP network interface, which is used by the instance |
174 | dc1fe8df | Jose A. Lopes | # communication, is part of the network 169.254.0.0/16 and has the IP |
175 | dc1fe8df | Jose A. Lopes | # 169.254.169.254. Because all network interfaces used in the |
176 | dc1fe8df | Jose A. Lopes | # instance communication have the same IP, the routing table must also |
177 | dc1fe8df | Jose A. Lopes | # be configured, and that is done at a later step. |
178 | dc1fe8df | Jose A. Lopes | # |
179 | dc1fe8df | Jose A. Lopes | # Note the interface must be marked as up before configuring the |
180 | dc1fe8df | Jose A. Lopes | # routing table and before starting/restarting the DHCP server. |
181 | dc1fe8df | Jose A. Lopes | # |
182 | dc1fe8df | Jose A. Lopes | # Note also that we don't have to check whether the interface is |
183 | dc1fe8df | Jose A. Lopes | # already configured because reconfiguring the interface with the same |
184 | dc1fe8df | Jose A. Lopes | # parameters does not produce an error. |
185 | dc1fe8df | Jose A. Lopes | ifconfig $INTERFACE 169.254.169.254 netmask $NETMASK up |
186 | dc1fe8df | Jose A. Lopes | |
187 | dc1fe8df | Jose A. Lopes | # Configure the routing table |
188 | dc1fe8df | Jose A. Lopes | # |
189 | dc1fe8df | Jose A. Lopes | # Given that all TAP network interfaces in the instance communication |
190 | dc1fe8df | Jose A. Lopes | # have the same IP address, the routing table must be configured in |
191 | dc1fe8df | Jose A. Lopes | # order to properly route traffic from the host to the guests. |
192 | dc1fe8df | Jose A. Lopes | # |
193 | dc1fe8df | Jose A. Lopes | # Note that we must first check if a duplicate routing rule has |
194 | dc1fe8df | Jose A. Lopes | # already been added to the routing table, as this operation will fail |
195 | dc1fe8df | Jose A. Lopes | # if we try to add a routing rule that already exists. |
196 | dc1fe8df | Jose A. Lopes | ACTIVE_IP=$(ip route | grep "dev $INTERFACE" | awk '{ print $1 }') |
197 | dc1fe8df | Jose A. Lopes | |
198 | dc1fe8df | Jose A. Lopes | if [ -z "$ACTIVE_IP" -o "$ACTIVE_IP" != "$IP" ] |
199 | dc1fe8df | Jose A. Lopes | then |
200 | dc1fe8df | Jose A. Lopes | route add -host $IP dev $INTERFACE |
201 | dc1fe8df | Jose A. Lopes | fi |
202 | dc1fe8df | Jose A. Lopes | |
203 | dc1fe8df | Jose A. Lopes | # Ensure the DHCP server configuration files exist |
204 | dc1fe8df | Jose A. Lopes | touch $DNSMASQ_CONF |
205 | dc1fe8df | Jose A. Lopes | chmod 0644 $DNSMASQ_CONF |
206 | dc1fe8df | Jose A. Lopes | |
207 | dc1fe8df | Jose A. Lopes | touch $DNSMASQ_HOSTS |
208 | dc1fe8df | Jose A. Lopes | chmod 0644 $DNSMASQ_HOSTS |
209 | dc1fe8df | Jose A. Lopes | |
210 | dc1fe8df | Jose A. Lopes | # Determine dnsmasq operational mode. |
211 | dc1fe8df | Jose A. Lopes | # |
212 | dc1fe8df | Jose A. Lopes | # The DHCP server dnsmasq can run in different modes. In this version |
213 | dc1fe8df | Jose A. Lopes | # of the script, only the mode 'bind-dynamic' is supported. Please |
214 | dc1fe8df | Jose A. Lopes | # refer to the dnsmasq FAQ for a detailed of each mode. |
215 | dc1fe8df | Jose A. Lopes | # |
216 | dc1fe8df | Jose A. Lopes | # Note that dnsmasq might already be running, therefore, we don't need |
217 | dc1fe8df | Jose A. Lopes | # to determine which modes are supported by this DHCP server. |
218 | dc1fe8df | Jose A. Lopes | # Instead, we just read the current mode from the configuration file. |
219 | dc1fe8df | Jose A. Lopes | DNSMASQ_MODE=$(head -n 1 $DNSMASQ_CONF) |
220 | dc1fe8df | Jose A. Lopes | |
221 | dc1fe8df | Jose A. Lopes | if [ -z "$DNSMASQ_MODE" ] |
222 | dc1fe8df | Jose A. Lopes | then |
223 | dc1fe8df | Jose A. Lopes | BIND_DYNAMIC=$(dnsmasq --help | grep -e --bind-dynamic) |
224 | dc1fe8df | Jose A. Lopes | |
225 | dc1fe8df | Jose A. Lopes | if [ -z "$BIND_DYNAMIC" ] |
226 | dc1fe8df | Jose A. Lopes | then |
227 | dc1fe8df | Jose A. Lopes | echo kvm-vif-bridge: dnsmasq mode \"bind-dynamic\" is not supported |
228 | dc1fe8df | Jose A. Lopes | exit 1 |
229 | dc1fe8df | Jose A. Lopes | fi |
230 | dc1fe8df | Jose A. Lopes | |
231 | dc1fe8df | Jose A. Lopes | DNSMASQ_MODE=bind-dynamic |
232 | dc1fe8df | Jose A. Lopes | fi |
233 | dc1fe8df | Jose A. Lopes | |
234 | dc1fe8df | Jose A. Lopes | # Determine the interfaces that should go in the configuration file. |
235 | dc1fe8df | Jose A. Lopes | # |
236 | dc1fe8df | Jose A. Lopes | # The TAP network interfaces used by the instance communication are |
237 | dc1fe8df | Jose A. Lopes | # named after the following pattern |
238 | dc1fe8df | Jose A. Lopes | # |
239 | dc1fe8df | Jose A. Lopes | # gnt.com.%d |
240 | dc1fe8df | Jose A. Lopes | # |
241 | dc1fe8df | Jose A. Lopes | # where '%d' is a unique number within the host. Fortunately, dnsmasq |
242 | dc1fe8df | Jose A. Lopes | # supports binding to specific network interfaces via a pattern. |
243 | dc1fe8df | Jose A. Lopes | ALIVE_INTERFACES=${GANETI_TAP}.* |
244 | dc1fe8df | Jose A. Lopes | |
245 | dc1fe8df | Jose A. Lopes | # Determine which of the leases are not duplicated and should go in |
246 | dc1fe8df | Jose A. Lopes | # the new configuration file for the DHCP server. |
247 | dc1fe8df | Jose A. Lopes | # |
248 | dc1fe8df | Jose A. Lopes | # Given that instances come and go, it is possible that we offer more |
249 | dc1fe8df | Jose A. Lopes | # leases that necessary and, worse, that we have duplicate leases, |
250 | dc1fe8df | Jose A. Lopes | # that is, the same IP address for the same/different MAC addresses. |
251 | dc1fe8df | Jose A. Lopes | # Duplicate leases must be eliminated before being written to the |
252 | dc1fe8df | Jose A. Lopes | # configuration file. |
253 | dc1fe8df | Jose A. Lopes | CONF_LEASES=$(cat $DNSMASQ_HOSTS) |
254 | dc1fe8df | Jose A. Lopes | CONF_LEASES=$(join $'\n' $CONF_LEASES | sort -u) |
255 | dc1fe8df | Jose A. Lopes | |
256 | dc1fe8df | Jose A. Lopes | ALIVE_LEASES=( $MAC,$IP ) |
257 | dc1fe8df | Jose A. Lopes | |
258 | dc1fe8df | Jose A. Lopes | for i in $CONF_LEASES |
259 | dc1fe8df | Jose A. Lopes | do |
260 | dc1fe8df | Jose A. Lopes | LEASE_MAC=$(echo $i | cut -d "," -f 1) |
261 | dc1fe8df | Jose A. Lopes | LEASE_IP=$(echo $i | cut -d "," -f 2) |
262 | dc1fe8df | Jose A. Lopes | if [ "$LEASE_MAC" != "$MAC" -a "$LEASE_IP" != "$IP" ] |
263 | dc1fe8df | Jose A. Lopes | then |
264 | dc1fe8df | Jose A. Lopes | ALIVE_LEASES=( ${ALIVE_LEASES[@]} $i ) |
265 | dc1fe8df | Jose A. Lopes | fi |
266 | dc1fe8df | Jose A. Lopes | done |
267 | dc1fe8df | Jose A. Lopes | |
268 | dc1fe8df | Jose A. Lopes | ALIVE_LEASES=$(echo ${ALIVE_LEASES[@]} | sort -u) |
269 | dc1fe8df | Jose A. Lopes | |
270 | dc1fe8df | Jose A. Lopes | # Update dnsmasq configuration. |
271 | dc1fe8df | Jose A. Lopes | # |
272 | dc1fe8df | Jose A. Lopes | # Write the parameters we have collected before into the new dnsmasq |
273 | dc1fe8df | Jose A. Lopes | # configuration file. Also, write the new leases into the new dnsmasq |
274 | dc1fe8df | Jose A. Lopes | # hosts file. Finally, restart dnsmasq with the new configuration |
275 | dc1fe8df | Jose A. Lopes | # files. |
276 | dc1fe8df | Jose A. Lopes | cat > $DNSMASQ_CONF <<EOF |
277 | dc1fe8df | Jose A. Lopes | $DNSMASQ_MODE |
278 | dc1fe8df | Jose A. Lopes | dhcp-authoritative |
279 | dc1fe8df | Jose A. Lopes | dhcp-hostsfile=$DNSMASQ_HOSTS |
280 | dc1fe8df | Jose A. Lopes | dhcp-range=169.254.0.0,static,255.255.0.0 |
281 | dc1fe8df | Jose A. Lopes | except-interface=eth* |
282 | dc1fe8df | Jose A. Lopes | except-interface=lo |
283 | dc1fe8df | Jose A. Lopes | leasefile-ro |
284 | dc1fe8df | Jose A. Lopes | no-hosts |
285 | dc1fe8df | Jose A. Lopes | no-ping |
286 | dc1fe8df | Jose A. Lopes | no-resolv |
287 | dc1fe8df | Jose A. Lopes | pid-file=$DNSMASQ_PID |
288 | dc1fe8df | Jose A. Lopes | port=0 |
289 | dc1fe8df | Jose A. Lopes | strict-order |
290 | dc1fe8df | Jose A. Lopes | EOF |
291 | dc1fe8df | Jose A. Lopes | for i in $ALIVE_INTERFACES; do echo interface=$i >> $DNSMASQ_CONF; done |
292 | dc1fe8df | Jose A. Lopes | |
293 | dc1fe8df | Jose A. Lopes | echo -n > $DNSMASQ_HOSTS |
294 | dc1fe8df | Jose A. Lopes | for i in $ALIVE_LEASES; do echo $i >> $DNSMASQ_HOSTS; done |
295 | dc1fe8df | Jose A. Lopes | |
296 | dc1fe8df | Jose A. Lopes | restart_dnsmasq |