RE: nsupdate and an external database

[Simpson, John R]

From the lack of response, I take it that there is no good way to have BIND 
trigger an external database update (or other action) when it receives a DDNS 
update.  At least not without significantly customizing BIND, similar to what 
Quadritec / Lucent / Alcatel-Lucent did with QIP.

Enhancing ProBIND to support BIND-SDB master servers while keeping traditional 
configuration files for the slaves looks feasible.  Would there be interest in 
the BIND community for a version of ProBIND with SDB support, or am I 
re-inventing the wheel?

There are a lot of dead and outdated links for BIND-SDB.  Is it viable for 
long-term use?

Thanks,

John

 From: Simpson, John R
 Sent: Tuesday, July 28, 2009 4:11 PM
 To: 'bind-users@lists.isc.org'
 Subject: nsupdate and an external database

 Greetings all,

 We have a number of BIND 9.3.4 servers that are managed by ProBIND.  We would 
 like to be able to
 use nsupdate to generate dynamic DNS updates, but, of course, any DDNS 
 updates would be lost
 the next time the zone was pushed since they aren't reflected in ProBIND's 
 MySQL database.

 Is there any standard way to have BIND notify an external function or program 
 that an update has occurred?

 For example, registering a callback function that would then make the 
 appropriate update to the
 ProBIND database?  That's not a perfect solution, since there's still a 
 chance for the zone and the
 external database to be out of sync if the external database update doesn't 
 exactly match the DNS
 update, or if the serial numbers are mishandled.  But it seems like that 
 would be a better solution
 than trying to monitor zone/journal files for changes, or parsing log files.

 I've looked at SDB, which would be attractive if ProBIND or an alternative 
 management system
 used SDB instead of their own schema, and I'm investigating bind-dlz and 
 NetReg.

 Is there a preferred way to handle this?

 Thank you for your time,

 John

John Simpson
Senior Software Engineer, I. T. Engineering and Operations

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nsupdate and an external database

[Simpson, John R]

Greetings all,

We have a number of BIND 9.3.4 servers that are managed by ProBIND.  We would 
like to be able to use nsupdate to generate dynamic DNS updates, but, of 
course, any DDNS updates would be lost the next time the zone was pushed 
since they aren't reflected in ProBIND's MySQL database.

Is there any standard way to have BIND notify an external function or program 
that an update has occurred?

For example, registering a callback function that would then make the 
appropriate update to the ProBIND database?  That's not a perfect solution, 
since there's still a chance for the zone and the external database to be out 
of sync if the external database update doesn't exactly match the DNS update, 
or if the serial numbers are mishandled.  But it seems like that would be a 
better solution than trying to monitor zone/journal files for changes, or 
parsing log files.

I've looked at SDB, which would be attractive if ProBIND or an alternative 
management system used SDB instead of their own schema, and I'm investigating 
bind-dlz and NetReg.

Is there a preferred way to handle this?

Thank you for your time,

John

John Simpson
Senior Software Engineer, I. T. Engineering and Operations

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