[Samba] SAMBA4: Changing DC's IP address (Bind 9.8.x) for testing

Adam Tauno Williams awilliam at whitemice.org
Wed Dec 21 14:21:08 MST 2011

On Wed, 2011-12-07 at 21:37 +0100, Gémes Géza wrote:
> 2011-12-07 15:41 keltezéssel, Adam Tauno Williams írta:
> > I upgraded by S3 domain to S4 using the upgrade script.  To do that i
> > had to have the S4 test box connected to the production network.  Now I
> > want to take it to the test network.  But the Bind 9.8.x instance using
> > the DLZ still has the old address... dynamic dns update doesn't work
> > because the tool can't find the KDC because DNS returns the wrong IP
> > address.
> > Can I modify the DNS zone using an ldb tool [ldbmodify]? To change the
> > IP of the DC (the only address in DNS at this point, everything seems to
> > CNAME back to the address).
> > Under the older Bind config I just changed the one or two lines in the
> > text zone file when I moved the VM from production to testing.
> samba-tool dns is your friend here.

Okay, I can change the IP of the host entry for the DC.

samba-tool dns update micore.us barbel A

Works great.

But how can I change the name of the root "." entry of the domain.  That
also holds an A record I don't seem to be able to change.

samba-tool dns query micore.us @ ALL
Password for [administrator at MICORE.US]: **************8
  Name=, Records=3, Children=0
    SOA: serial=5, refresh=900, retry=600, expire=86400,
ns=barbel.micore.us., email=hostmaster.micore.us. (flags=600000f0,
serial=5, ttl=3600)
    NS: barbel.micore.us. (flags=600000f0, serial=1, ttl=900)
    A: (flags=600000f0, serial=1, ttl=900)
  Name=_msdcs, Records=0, Children=0
  Name=_sites, Records=0, Children=1
  Name=_tcp, Records=0, Children=4
  Name=_udp, Records=0, Children=2
  Name=barbel, Records=1, Children=0
    A: (flags=f0, serial=3, ttl=900)
  Name=DomainDnsZones, Records=0, Children=2
  Name=ForestDnsZones, Records=0, Children=2

But what is the value for <name> in "samba-tool dns update
micore.us <name> A" in order to modify that
entry.  I've tried "", ".", "@"....  none of which map to a record in
the LDB, thus yielding -

ERROR(runtime): uncaught exception - (9701,

System & Network Administrator [ LPI & NCLA ]
OpenGroupware Developer <http://www.opengroupware.us>
Adam Tauno Williams

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