Scripts/dynsupdate - Revision history

Jan: 1 revision imported

2016-08-26T19:10:43Z

1 revision imported

← Older revision

Revision as of 21:10, 26 August 2016

Jan: 1 revision imported

2016-08-26T19:09:41Z

1 revision imported

← Older revision

Revision as of 21:09, 26 August 2016

Jan at 13:16, 8 February 2011

2011-02-08T13:16:03Z

← Older revision		Revision as of 15:16, 8 February 2011
Line 1:		Line 1:
	This script will update the A records for zones you host on your local Bind9 nameserver to your (external) dynamic IP. Make sure that nsupdate works with a key by testing it manually.		This script will update the A records for zones you host on your local Bind9 nameserver to your (external) dynamic IP. Make sure that nsupdate works with a key by testing it manually.

			I'm running this script after every reconnect of my VDSL link through ppp's ip-up scripts by putting it here:
			<pre>
			/etc/ppp/ip-up.d/dynsupdate
			</pre>

	'''Notice:''' The here-document lines (between EndOfCommands) have to be indented with tabs, or not indented at all - spaces will not work.		'''Notice:''' The here-document lines (between EndOfCommands) have to be indented with tabs, or not indented at all - spaces will not work.
Line 8:		Line 13:
	SERVER="192.168.0.XXX"		SERVER="192.168.0.XXX"
	KEY="/etc/bind/Knsupdate.key"		KEY="/etc/bind/Knsupdate.key"
			TTL="300"

	IP=`lynx -dump http://checkip.dyndns.org \| awk '{print $4}'`		IP=`lynx -dump http://checkip.dyndns.org \| awk '{print $4}'`
Line 22:		Line 28:
	COMMANDS="$COMMANDS		COMMANDS="$COMMANDS
	update delete ${RECORD}. A		update delete ${RECORD}. A
	update add ${RECORD}. ~~300~~ A ${IP}		update add ${RECORD}. ${TTL} A ${IP}
	"		"
	echo "updating record: $RECORD"		echo "updating record: $RECORD"

Jan: Created page with "This script will update the A records for zones you host on your local Bind9 nameserver to your (external) dynamic IP. Make sure that nsupdate works with a key by testing it manu…"

2011-02-08T13:11:10Z

Created page with "This script will update the A records for zones you host on your local Bind9 nameserver to your (external) dynamic IP. Make sure that nsupdate works with a key by testing it manu…"

New page

This script will update the A records for zones you host on your local Bind9 nameserver to your (external) dynamic IP. Make sure that nsupdate works with a key by testing it manually.

'''Notice:''' The here-document lines (between EndOfCommands) have to be indented with tabs, or not indented at all - spaces will not work.
<pre>
#!/bin/bash

RECORDS=("example.com" "ns1.example.com" "ns2.example.com" "example.org" "example.net")
SERVER="192.168.0.XXX"
KEY="/etc/bind/Knsupdate.key"

IP=`lynx -dump http://checkip.dyndns.org | awk '{print $4}'`

if [ -e "/tmp/nsup.IP" ]; then
read OLD_IP < "/tmp/nsup.IP"
else
OLD_IP="0.0.0.0"
fi

if [ "$IP" != "$OLD_IP" ]; then
echo "IP address changed from $OLD_IP to $IP"
for RECORD in ${RECORDS[@]}; do
COMMANDS="$COMMANDS
update delete ${RECORD}. A
update add ${RECORD}. 300 A ${IP}
"
echo "updating record: $RECORD"
done
nsupdate -v -k ${KEY} <<-EndOfCommands
server ${SERVER}
${COMMANDS}
send
EndOfCommands
echo "$IP" > /tmp/nsup.IP
echo "IP updates done"
fi
</pre>