Hello, On Nov 8, 2012, at 22:48 , a b wrote:
> > Using purely DNS for zone replication (supermaster) is nice and sounds > > great, but also has disadvantages, e.g. it is not reliable: If the > > NOTIFY could not be delivered to the slave, then the slave is > > inconsistent. So, you need another mechanism to verify and update slaves > > which failed to receive the NOTIFY. > > Does this scenario not hold true for any distributed service which relies on > network connectivity? Many protocols for distribution of data have a certain ordering and an acknowledgement mechanism. NOTIFY does have an acknowledgement mechanism (but PowerDNS masters don't do a lot with it) but no ordering. It's easier to lose things with NOTIFY than with other replication protocols. Kind regards, -- Peter van Dijk Netherlabs Computer Consulting BV - http://www.netherlabs.nl/ _______________________________________________ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
