[Pdns-users] Notification for domains to ip1:53 failed after retries

[Klaus Darilion]

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