Klaus, Good to know. when would BIND do a SOA query to the configured master to check the serial? Is it immediately right after it get NOTIFY from master?
Thanks, Steve > On Jan 17, 2018, at 3:32 PM, Klaus Darilion <[email protected]> > wrote: > > > > Am 17.01.2018 um 15:13 schrieb Steve Zeng: >> Pieter, >> >> I checked BIND slaves logs around the time frame and found: >> >> 10-Jan-2018 18:11:17.211 notify: client 10.198.180.41#12149: received notify >> for zone 'example.com' >> 10-Jan-2018 18:11:17.211 general: zone lhr4.dqs.booking.com/IN: notify from >> 10.198.180.41#12149: no serial >> 10-Jan-2018 18:11:24.387 notify: client 10.198.180.41#12149: received notify >> for zone 'example.com' >> 10-Jan-2018 18:11:24.387 general: zone lhr4.dqs.booking.com/IN: notify from >> 10.198.180.41#12149: no serial >> 10-Jan-2018 18:11:29.453 notify: client 10.198.180.41#12149: received notify >> for zone 'example.com' >> 10-Jan-2018 18:11:29.453 general: zone lhr4.dqs.booking.com/IN: notify from >> 10.198.180.41#12149: no serial >> 10-Jan-2018 18:11:38.350 notify: client 10.198.180.41#12149: received notify >> for zone 'example.com' >> 10-Jan-2018 18:11:38.350 general: zone lhr4.dqs.booking.com/IN: notify from >> 10.198.180.41#12149: no serial >> >> wondering why there is ’no serial’ in the logs. Since the column does have >> the value: >> >>> select * from domains where name='example.com'\G; >> *************************** 1. row *************************** >> id: 484 >> name: example.com >> master: 10.187.125.2:53,10.187.125.2:53 >> last_check: 1516197871 >> type: SLAVE >> notified_serial: 2016918645 >> >> is “no serial” the cause of notification failure? > > I do not think this is the problem. NOTIFYs may have serials, but > without serial is also allowed. And PowerDNS does not send serials. > > Usually, when there is no serial, Bind will do SOA-Queries to the > configured masters to check the serial on the master. > > regards > Klaus > _______________________________________________ > Pdns-users mailing list > [email protected] <mailto:[email protected]> > https://mailman.powerdns.com/mailman/listinfo/pdns-users > <https://mailman.powerdns.com/mailman/listinfo/pdns-users>
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