Friday, July 31, 2020

starting my own ddns.

have my own vm with westhost… barilin.com

using cron.

# Updated 2/9/19
2,7,12,17,22,27,32,37,42,47,52,57 * * * * /root/bin/reportipaddress &> /dev/null

I have it running the foloowing every 5 minutes…
pushing the IP Address up to my VM

root@cp1:~/bin# cat reportipaddress
DATE=/usr/bin/date
QUERY=""
QUERY="/usr/bin/curl http://barilin.com/whatipaddressami"
$QUERY
if [ "$QUERY" != "" ]; then
  $ECHO $DATE >> /var/log/reportipaddress.log
fi;
root@cp1:~/bin#

I have it report into my vm and have it query a non exsistant url..
Then I parse the logs every 5 mintues with cron

5,10,15,20,25,30,35,40,45,50,55,59 * * * * ~/bin/5minutes.sh

cron calls a script

[uscopley@sl-508-21 bin]$ cat 5minutes.sh
CAT=/usr/bin/cat
FILE="/home/uscopley/access-logs/barilin.com"
HEADHTML="/home/uscopley/bin/5minutes.head"
TAILHTML="/home/uscopley/bin/5minutes.tail"
GREP=/usr/bin/grep
TAIL="/usr/bin/tail -10"
STRING=whatipaddressami
REPORT="/home/uscopley/www/reportipaddress.html"
#
#
#
$CAT $HEADHTML > $REPORT
$CAT $FILE | $GREP $STRING | $TAIL >> $REPORT
$CAT $TAILHTML >> $REPORT
#
#
#

#cat ~/access-logs/barilin.com | grep whatipaddressami | tail -3 > ~/www/reportipaddress.html

The next part hasn’t been written yet. I’m going to grab that ip address that’s reported
and shove it into dns… With my home A name.