When your dynamic IP changes...
forrie at forrie.com
Tue Sep 21 15:49:59 PDT 2004
For the most part, my cable system stays on 24x7, thus my IP address
remains the same (often for the duration of a year). However there are
times when unpredictable things happen, such as outages, that will cause
your IP to change.
I have a number of internal and external dependencies that rely upon
this IP address. For the most part, I've not had to change these much -
however, when it happens, it's a PITA.
- ipfw rules
- mysql tables
- apache configuration
- named.conf (possibly)
and more. Including needing to update external DNS, which could be
addressed by using a dyndns.org name, and set your DNS to that hostname.
I could whip up a script using M4 to dynamically change the ipfw rules
and point /etc/rc.conf to a different script.
I'm curious if anyone else has come up with a nifty scheme to make this
less painful when it happens -- other than the obvious idea of getting a
provider that supports fixed IP addresses ;-)
Someone suggested to me the GNU CFEngine, too -- seems a bit complex for
this task, though.
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