[nsd-users] nsd xfr and servfail

[Franky Van Liedekerke]

Hi,

While I'm recompiling, testing and hoping the server won't hang
anymore, I was also analyzing the logs.
For certain zones, I see this in nsd.log:

[2022-09-16 17:08:59.096] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:09:10.104] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:09:21.113] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:09:32.120] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:09:43.129] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:09:54.140] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:10:05.148] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:10:16.156] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:10:27.164] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:10:38.171] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:10:49.181] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:11:00.188] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4
[2022-09-16 17:11:11.196] nsd[80483]: error: xfrd: zone myzone.be
received error code SERVFAIL from 1.2.3.4

Now the zone was no longer correctly configured on the master dns
server, but the soa on file for nsd is this:

2012062710 7200 300 86400 3600

And if I read correctly, the XFR should then be retried every 300
seconds, but in the logs I see a xfr retry every 11 seconds.  A
colleague did execute "nsd-control force_transfer" yesterday, but since
then we restarted nsd already a number of times. So why every 11
seconds (I'm going to assume in reality this is 10 seconds with some
additional delay)?

With friendly regards,
Franky
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