Resolved Slave DNS Manager / zone may fail to transfer to slaves

[georgee]

Hi,

Ubuntu 18.04.4 LTS
Plesk Obsidian
Version 18.0.25 Update #2, last updated on April 9, 2020 10:05 PM

I found that after some update, my Slave DNS server stopped working properly.
There are no changes on the Slave DNS server.

We followed these instructions.

 How to integrate Plesk with a secondary (slave) DNS server?

Applicable to: Plesk Question How to integrate primary Plesk DNS server with secondary Slave DNS server? Answer Plesk as Master DNS + external Linux-based DNS server The integration can be per...

support.plesk.com

Secondary DNS Server

This section describes how to integrate Plesk with an external Linux-based secondary (slave) DNS server. This server ...

docs.plesk.com

After configuration, everything worked, so I can't tell when it's not working.

We encountered a problem when configuring DNSSEC that no change would be written to the Slave DNS server.

Everything looks fine in Slave DNS Manager.

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When resync all DNS zones, logs

Apr 8 23:55:24 example.com systemd[1]: Reloaded BIND Domain Name Server.Apr - Pastebin.com

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Logs on the Slave DNS server
Apr 8 23:55:24 ns2 named[13684]: client @0x7f55100c7430 xxx.xxx.xxx.xxx#63231: received notify for zone 'example2.com': not authoritative Apr 8 23:55:30 ns2 named[13684]: received control channel command 'refresh example2.com IN NS2' Apr 8 23:55:30 ns2 named[13684]: received control channel command 'addzone example2.com IN NS2 { type slave; file "example.com"; masters { xxx.xxx.xxx.xxx; }; };'

Slave DNS Server Ubuntu 18.04.1
Bind 9.11.3


We also tried to reinstall the Slave DNS Server, but without success, it does not work.
We went through a lot of discussions, but we didn't fix the problem.

Thank you for providing information on how to fix the problem

 

[AYamshanov]

Hi georgee,

Logs on the Slave DNS server
Apr 8 23:55:24 ns2 named[13684]: client @0x7f55100c7430 xxx.xxx.xxx.xxx#63231: received notify for zone 'example2.com': not authoritative

Have you tried to check/configure a primary name server for the zone? Usually, you need to select Plesk because it works as a master DNS and hosts zones. (this setting also available for DNS templates in the server-wide settings)

 

[georgee]

Hi AYamshanov

Hi georgee,



Have you tried to check/configure a primary name server for the zone? Usually, you need to select Plesk because it works as a master DNS and hosts zones. (this setting also available for DNS templates in the server-wide settings)

Everything should be correct.
It worked at that time

I do not know when replication on DNS Slave Server stopped working.

I configured DNSSEC.
And when checking the functionality of DNSSEC, we found that replication on the DNS Slave Server is not working.

Thank you

 

[Nomadturk]

It does sync some of them and does not sync some of them for me as well.
Most of the new domains after upgrade have dns related problems.

Reinstalling OS or Bind on DNS Server didn't help either.

In my case, Plesk does send some of the domains to the Slave DNS, but new ones are missing.
Only when I manually add them to 3bf305731dd26307.nzf file they start working, but before that, it's a mess and the automation does not work.

Last time this happened removing / re-adding slave dns extension did help. It's a pain but it looks like I will be periodically removing / adding Slave DNS extension and re-configuring it to make it work :/

It's weird that it works sometimes and suddenly does not.

 

[georgee]

Helped me Plesk support.

Here if you happen to have the same problem.
Answer from support

Im glad to inform that the issue with slave server is resolved. The error happened because the field view was filled out (in the Process when adding a new slave) with value NS2. This field (shown in the screenshot) should be blank. Otherwise it won't work.



To fix it, I run the following query on db.

MariaDB [psa]> update ModuleSettings set value='' where value='NS2';

Now everyting is working fine on Master and Slave.