[Bug 1670450] Re: samba4 bind dlz module stops working on rndc reload

[Stéphane Berthelot]

Any news on this bug ? Since it affects all versions and a tested patch exists I thought it would have been integrated sooner (at least -proposed)
It affects production (LTS) servers running Samba + Bind which is a quite rather common scenario on "real" environments for AD replacement. We also have identified indirect impact on integrated Ubuntu clients (with winbind and joined on AD domain) since it triggers sometimes DNS updates on server (along with dynamic DHCP updates to DNS Zone)
Restarting bind completely many times a day is not really a production-level solution to me ...

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Title:
  samba4 bind dlz module stops working on rndc reload

Status in samba:
  Unknown
Status in samba package in Ubuntu:
  Triaged

Bug description:
  I am encountering the exact same problem as described in this bug report.
  A patch seems available and should fix the problem.

  https://forge.univention.org/bugzilla/show_bug.cgi?id=39139

  When reloading bind while I have samba setup as a PDC and using BIND9_DLZ module, the zone is deleted.
  Restarting named makes it work again but is not usable seems many scripts (logrotate) use reload by default.

  Issuing a simple "rndc zonestatus ad.zone" just after restart is OK, and after reload I get a "rndc: 'zonestatus' failed: not found
  no matching zone 'ad.zone' in any view"

  This may cause a lot of trouble for dynamic updates on somewhat
  complex setups with Samba as a PDC (samba internal DNS server is
  really limited...)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: samba 2:4.3.11+dfsg-0ubuntu0.16.04.3
  ProcVersionSignature: Ubuntu 4.8.0-39.42~16.04.1-generic 4.8.17
  Uname: Linux 4.8.0-39-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  Date: Mon Mar  6 19:00:47 2017
  InstallationDate: Installed on 2017-02-24 (10 days ago)
  InstallationMedia: Ubuntu-Server 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.8)
  NmbdLog:
   
  OtherFailedConnect: Yes
  SambaServerRegression: No
  SmbConfIncluded: Yes
  SmbLog:
   
  SourcePackage: samba
  UpgradeStatus: No upgrade log present (probably fresh install)

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