On Thu, 11 Aug 2005, Daniel McBrearty wrote:
Anyone using ddclient that knows how to configure it to run after reboot?
At the moment I start it manually. I looked atthe deb policy manual
about scripts to be added to /etc/init.d and the scripts that come
with ddclient don't seem to fit (ddclient doesn't accept the start,
stop and so on args).
If I just have some arbitrary commands to be executed at
startup/shutdown, where should I put them? is that the "good way"?
ddclient isn't really a daemon so I don't think it is appropriate to run
it from /etc/init.d/... What you really want to do is trigger ddclient to
run when the IP address that you are assigned via DHCP from your ISP
changes. This could happen at reboot but also when the DHCP server's lease
expires if you don't reboot your machine a lot.
I don't run ddclient, but do run something very similar, ipcheck, that
does basically the same thing. The machine I run this on is a server that
is up basically 24/7, it never is rebooted (unless something bad happens).
What I do is run ipcheck from a cron job once an hour. It checks the IP
address, determines if it changes and updates DynDNS if necessary. I think
ddclient does about the same thing.
To run it at reboot, I would try to tie it in with the configuration of
the network interface. '/etc/network/interfaces' is where you have
configured your network interface to run DHCP and you can run arbitrary
scripts/programs when the interface goes up or down. You should be able to
run ddclient when the interface come up. See the man page on interfaces
for the details. There are various 'up' commands that allow you to run
commands before or after the network interface is brought up.
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