Steve,
If your powerdns is configured as master within your bind's conf for that
zone, it will do a SOA query and if neede a zonetransfer within a second.
cheers,
-arsen
* Steve Zeng <[email protected]> [2018-01-17 15:43 (+0100)]:
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
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