[Pdns-users] FW: Deleted DNS Records not Removing from Slave

[Mark Scholten]

Hello,

I did forget to add the script, now it's attached. It is made to be used
from the command line interface (php pdns_clean.php).

With kind regards,

Mark Scholten

-----Original Message-----
From: Mark Scholten [mailto:mark at streamservice.nl] 
Sent: Wednesday, July 28, 2010 10:41 PM
To: 'pdns-users at mailman.powerdns.com'
Cc: 'fredj toukebri'
Subject: RE: [Pdns-users] Deleted DNS Records not Removing from Slave

Hello,

Sorry for the delay, attached is a working file that tries to do a AXFR (so
you need to run it on a server that is allowed to receive AXFR from the
(hidden) master). It uses PHP and dig. It is tested on Debian (4 and 5)
systems.

At the top there is a small configuration part (database connection/test or
not/verbose or not).

The license is included at the top of the script (above the configuration
section).

Tips:
- Do the first run with $test = 1 and $verbose = 1 to see if it does work in
your situation.
- Set $verbose = 0 if you want to use it in a cron (no output except if
there is a PHP/MySQL problem)
- I advise to do the first run with deleting zones without using a cron,
just to check it

Please contact me off list with improvements/problems. If someone wants to
include it with powerdns, feel free to include it (please respect the
license).

With kind regards,

Mark Scholten

> -----Original Message-----
> From: pdns-users-bounces at mailman.powerdns.com [mailto:pdns-users-
> bounces at mailman.powerdns.com] On Behalf Of Mark Scholten
> Sent: Saturday, June 26, 2010 12:02 PM
> To: 'Nils Breunese (Lemonbit)'; pdns-users at mailman.powerdns.com
> Subject: Re: [Pdns-users] Deleted DNS Records not Removing from Slave
> 
> 
> 
> > -----Original Message-----
> > From: pdns-users-bounces at mailman.powerdns.com [mailto:pdns-users-
> > bounces at mailman.powerdns.com] On Behalf Of Nils Breunese (Lemonbit)
> > Sent: Saturday, June 26, 2010 11:58 AM
> > To: pdns-users at mailman.powerdns.com
> > Subject: Re: [Pdns-users] Deleted DNS Records not Removing from Slave
> >
> > Brandon Lee wrote:
> >
> > > We have 2 PDNS servers using the MySQL backend.  Both servers have
> > their own MySQL database.  When inserting a DNS record, or making
> > changes the record is updated by the slave server.  However, when a
> > record is deleted, the record is not being deleted from the slave
> > server.  Is there some additional configuration option that must be
> > set, or is it not possible for the slave to delete records?
> >
> > AFAIK you'll need to manually remove the zone from the slave if your
> > servers use independent database backends as I don't think there is a
> > way for the master to notify slaves of a removed zone. Please correct
> > me if I'm wrong.
> >
> > You can solve this by setting up replication or sharing the database
> if
> > that's possible in your situation. I have a server which is a slave
> to
> > multiple supermasters, so I'm kind of stuck with the same problem
> > there.
> I did write a small PHP script for that. It checks the master (based on
> the
> IP listed in the MySQL database used by the slave) to see if a zone
> still
> exists. It records it when it doesn't get a response containing the SOA
> record (as I require the SOA record). It also records the reason (if
> known),
> for example a time out is different compared to an "I don't
> know"/"doesn't
> exist"/"recursion not allowed" response. After getting 3 times a
> response
> saying the zone doesn't exist the zone is dropped on the slave. On
> request I
> can share that PHP script with the community (it works using a cron on
> a
> daily base).
> 
> Mark
> >
> > Nils.
> > _______________________________________________
> > Pdns-users mailing list
> > Pdns-users at mailman.powerdns.com
> > http://mailman.powerdns.com/mailman/listinfo/pdns-users
> 
> _______________________________________________
> Pdns-users mailing list
> Pdns-users at mailman.powerdns.com
> http://mailman.powerdns.com/mailman/listinfo/pdns-users
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