On Thu, Jun 7, 2012 at 7:15 AM, James Cammarata <[email protected]> wrote:
>>> Hello everybody:
>>>
>>> I’m new to the list, and I’m new to cobbler. I stumbled upon cobbler
>>> looking for a solution to an idea I have. I’m working on a voip server idea.
>>> Mostly a front end to FreeSwitch. I think most voip systems handle new phone
>>> configuration backwards. You enter configuration information into the system
>>> before plugging the phone in, and then you plug the phone in. It seems
>>> backwards to me.
>>> What I want to do is the following:
>>> 1 – plug new IP phone into wall jack
>>> 2 – IP phone asks DHCP server for IP address
>>> 3 – DHCP server detects by the vendor code and/or MAC address, that
>>> someone has plugged a new phone in
>>> 4 – DHCP server tells cobbler that there is a new phone attached
>>> snip
>> You might consider looking into
>> http://theforeman.org/projects/smart-proxy/wiki, it should allow you to
>> configure dhcp/tftp via an rest API and could probably make it easy to drive
>> the needed changes.
>
> Whether you use foreman or cobbler makes no difference, the crux of
> the question is whether ISC's dhcpd can trigger a script when a lease
> request comes in. A quick search turned up this:
>
> http://jpmens.net/2011/07/06/execute-a-script-when-isc-dhcp-hands-out-a-new-lease/
>
> I haven't done it myself personally, but that looks like what you
> want, and yes - cobbler would be able to handle it. You'd just need to
> write to the XMLRPC API. I've considered moving cobbler to REST, but
> frankly the XMLRPC API works fine and is not (in my opinion) any more
> difficult to use.

So following through this I would approach it like this:

1: Create my overall profile(s) in Cobbler, not associating any systems with it
2: In the dhcpd.template file I would setup the dhcp block with the
vendor code/mac matching classifier
3: I'd build the script to perform the initial creating of that phone
as a 'system' in cobbler attached to the profile (as per james
statement above)

The original step 5 is the sticking point for me.  The script you
write in my #3 could create that template, but cobbler already
generates pxe configuration files so it might be easily patched to
support creating the phones configuration file.

I think using the python tftp server would probably be a good idea if
cobbler is patched to build the pxe config files, otherwise that will
require a cobbler sync.  Which leads to the next thing to ask, would
the dhcp profile need to change for that system after initial
registration? because that would require a cobbler sync to rebuild the
dhcpd.conf file.  Depending on how it all ended up functioning I would
probably leave the script to run everytime so that I didn't have to
change the dhcp profile.

-greg
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