On Tue, 5 Sep 2023, Leroy Tennison via bind-users wrote:
After some recent upgrading it was discovered that both DNS servers were
configured as master. I'm assuming i can use
https://kb.isc.org/docs/managing-manual-multi-master to "demote" one of
them but is there anything to look for concerning possible
inconsistencies and how do I check for those issues?
Before you do anything, back up both zone files!
Merge and deconflict any differences. Set the "true" master to a higher
serial number. Disable zone updates on the secondary.
Pause for a scream test.
Then "the usual" applies: set one of them to be a secondary and the master
to allow zone transfers from it. Configure Notify if desired.
Make sure it works, i.e. a zone transfer (AXFR / IXFR) occurs and the
correct serial number is represented in the SOA.
Pause for another scream test.
--
Fred Morris
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