[Samba] DNS Update Error

[Stefan Schäfer]

Hello List,

in the following environment SUSE Linux Enterprise 11SP3 with bind 
9.9.4P2 and the Sernet samba packages in version 4.1.7. samba works as 
AD PDC. Every few days our bind dns server denies updates. It looks like 
a problem with kerberos and the bind_dlz driver:

Jul  2 08:04:21 s4ad named[22579]: samba_dlz: starting transaction on 
zone baettenhausen.local
Jul  2 08:04:21 s4ad named[22579]: client 192.168.1.199#50938: update 
'baettenhausen.local/IN' denied
Jul  2 08:04:21 s4ad named[22579]: samba_dlz: cancelling transaction on 
zone baettenhausen.local
Jul  2 08:04:21 s4ad named[22579]: tsig.c:228: 
INSIST((tkey->ring->lru).head != (tkey)) failed, back trace
Jul  2 08:04:21 s4ad named[22579]: #0 0x7f9b05049d03 in ??
Jul  2 08:04:21 s4ad named[22579]: #1 0x7f9b039a842a in ??
Jul  2 08:04:21 s4ad named[22579]: #2 0x7f9b04930e98 in ??
Jul  2 08:04:21 s4ad named[22579]: #3 0x7f9b04931072 in ??
Jul  2 08:04:21 s4ad named[22579]: #4 0x7f9b049314ff in ??
Jul  2 08:04:21 s4ad named[22579]: #5 0x7f9b0492f0db in ??
Jul  2 08:04:21 s4ad named[22579]: #6 0x7f9b0505f27e in ??
Jul  2 08:04:21 s4ad named[22579]: #7 0x7f9b050403c1 in ??
Jul  2 08:04:21 s4ad named[22579]: #8 0x7f9b039ca178 in ??
Jul  2 08:04:21 s4ad named[22579]: #9 0x7f9b035777f6 in ??
Jul  2 08:04:21 s4ad named[22579]: #10 0x7f9b028d309d in ??
Jul  2 08:04:21 s4ad named[22579]: exiting (due to assertion failure)
Jul  2 08:07:34 s4ad samba[22516]: [2014/07/02 08:07:34.509060,  0] 
../source4/dsdb/dns/dns_update.c:294(dnsupdate_nameupdate_done)
Jul  2 08:07:34 s4ad samba[22516]: ../source4/dsdb/dns/dns_update.c:294: 
Failed DNS update - NT_STATUS_IO_TIMEOUT
Jul  2 08:17:34 s4ad samba[22516]: [2014/07/02 08:17:34.561453,  0] 
../source4/dsdb/dns/dns_update.c:294(dnsupdate_nameupdate_done)
Jul  2 08:17:34 s4ad samba[22516]: ../source4/dsdb/dns/dns_update.c:294: 
Failed DNS update - NT_STATUS_IO_TIMEOUT
Jul  2 08:27:34 s4ad samba[22516]: [2014/07/02 08:27:34.613204,  0] 
../source4/dsdb/dns/dns_update.c:294(dnsupdate_nameupdate_done)
Jul  2 08:27:34 s4ad samba[22516]: ../source4/dsdb/dns/dns_update.c:294: 
Failed DNS update - NT_STATUS_IO_TIMEOUT
Jul  2 08:37:34 s4ad samba[22516]: [2014/07/02 08:37:34.666340,  0] 
../source4/dsdb/dns/dns_update.c:294(dnsupdate_nameupdate_done)
Jul  2 08:37:34 s4ad samba[22516]: ../source4/dsdb/dns/dns_update.c:294: 
Failed DNS update - NT_STATUS_IO_TIMEOUT

In this state bind refuses everything.

After restarting bind everything works normal.

Any idea to prevent this?

Stefan

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FSP Computer & Netzwerke
Inhaber:
Dipl.-Ing. Stefan Schäfer

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