Dynamic IP and cron job

[satimis]

Hi folks,

Ubuntu-6.06.1-LAMP-server-amd64

I have a script.php which is used to update the IP address of my domain on registrar's website. I keep it on /etc/. The IP address of the server only changes on connection. Please advise how to create a "cron job" which will run the script after booting to update the IP address.

Is /etc/ the right directory for holding the script?

TIA

B.R.
satimis

[bigtomrodney]

The script should probably go into one of the 'bin' folder if it is an executable, unless it is a service/daemon in which case it would go into /etc/rc.d/init.d/ or /etc/init.d/ and then added to the services using the chkconfig command.

To add a cron command log into a terminal as root and use crontab -

su -
crontab -e

You then add the job like this

* * * * * [command]

Where the asterisks stand for , minute,hour,day-of-month,month,day-of-week - To run it every hour at half past -

30 * * * * /path/to/your/script.sh

Check out this wikipedia page

[satimis]

Hi bigtomrodney,

Tks for your advice and URL.

The script.php was download from the website where I registered the domain. There is a short instruction on the file download instructing running the script.php on cron.

I tried to setup cron with webmin but can't figure out how to set it to run after booting up. Because the IP address of the server only changes on connection. I need to update the IP address on the registrar's website simultaneously.

Tks.

B.R.
satimis

[yuri_d]

I am a noob so beware of my advice
IMO your script should go to your distro's rc.local equivalent because it only need to be run on start up.
Alternatively check out http://ddclient.sourceforge.net/
It should be configured as a service with init script and run at startup.

I would recomment method 2 if your registar supports it.

[satimis]

Hi yuri_d,

Tks for your advice.

Alternatively check out http://ddclient.sourceforge.net/
It should be configured as a service with init script and run at startup.

I would recomment method 2 if your registar supports it.

I have ddclient running on this server which is for test purpose. I also have "satimis.homelinux.com" registered with dyndns.com. But I can't get it to work, even unable to ping "satimis.homelinux.com" always pointing at "219.79.144.30", the IP in its Database/DNS asigned to me on registration then hanging.

$ sudo cat /etc/ddclient.conf

Password:
# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf

daemon=600
pid=/var/run/ddclient.pid
use=web, web=checkip.dyndns.org/, web-skip='IP Address'
login=satimis
password=xxxxx
protocol=dyndns2
server=members.dyndns.org
wildcard=YES
#use=if, if=eth0
#satimis.homelinux.com
example.dyndns.org
custom=yes, example.com

I spent a week unable to find a solution. Any advice? TIA

B.R.
satimis