MAAS

  1. Bug #1888536
  2. Comment #1

Comment 1 for bug 1888536

Revision history for this message
Ian Marsh (drulgaard) wrote :

I've reproduced this on a test system to which I have full access.

At the time DNS starts failing, /var/snap/maas/common/log/named.log shows:

25-Jul-2020 09:44:34.333 ../../../lib/dns/rbtdb.c:1499: fatal error:
25-Jul-2020 09:44:34.333 RUNTIME_CHECK(rbtdb->next_serial != 0) failed
25-Jul-2020 09:44:34.333 exiting (due to fatal error in library)
25-Jul-2020 09:44:38.443 starting BIND 9.11.3-1ubuntu1.12-Ubuntu (Extended Support Version) <id:a375815>

So BIND crashes and is restarted - with a bad configuration.

I think the crash is actually due to changing the dnssec-validation option and reloading, and restarting instead of reloading prevents this crash. This means I should use a different 'quick fix'!

However, I can't find anything in the logs as to why the configuration file was changed, which is the real issue here.