[Samba] 2nd DC, internal DNS: dns_tkey_negotiategss: TKEY is unacceptable

[Roel van Meer]

L.P.H. van Belle writes:

> check the rights on :
> /var/lib/samba/private/dns.keytab 640 root:bind
> /var/lib/samba/private/dns 750 root:bind
> /var/lib/samba/private/sam.ldb.d 750 root:bind

I'm using the internal DNS on both DC's, so I guess bind access rights  
aren't the issue.

Thanks for your answer though :)

Regards,

Roel


> >-----Oorspronkelijk bericht-----
> >Van: samba [mailto:samba-bounces at lists.samba.org] Namens Roel van Meer
> >Verzonden: donderdag 6 augustus 2015 8:55
> >Aan: samba at lists.samba.org
> >Onderwerp: [Samba] 2nd DC, internal DNS:
> >dns_tkey_negotiategss: TKEY is unacceptable
> >
> >Hi everyone,
> >
> >I'm testing with a Samba4 AD network, and I have some problems
> >with DNS on
> >the second DC, with which I could use a bit of your help.
> >
> >I have an AD with two DC's, both Samba 4.2.3.  On the first DC,
> >samba_dnsupdate works fine.  With stock 4.2.3 I get the error
> >
> >  "TSIG error with server: tsig verify failure"
> >
> >but the DNS updates succeed anyway, and after applying Gunther
> >Kukkukk's patch from
> >https://lists.samba.org/archive/samba-technical/2013-February/0
> 90408.html
> >the error is gone.  So no problems there.
> >
> >However, on the second DC samba_dnsupdate does not work.  I
> >get the error
> >
> >  "dns_tkey_negotiategss: TKEY is unacceptable"
> >
> >Problem is: I don't really know where to look.  On the first
> >DC (dev), the
> >ticket cache used by samba_dnsupdate contains:
> >
> >  root at dev:~# klist -c /tmp/tmpoFYYga
> >  Ticket cache: FILE:/tmp/tmpoFYYga
> >  Default principal: DEV$@EXAM.CORP
> >
> >  Valid starting       Expires              Service principal
> >  08/06/2015 08:17:43  08/06/2015 18:17:43  krbtgt/EXAM.CORP at EXAM.CORP
> >  08/06/2015 08:17:43  08/06/2015 18:17:43  DNS/dev.exam.corp at EXAM.CORP
> >
> >On the second DC (dc2) the ticket cache looks like:
> >
> >  root at dc2:~# klist -c /tmp/tmpzCc55h
> >  Ticket cache: FILE:/tmp/tmpzCc55h
> >  Default principal: DC2$@EXAM.CORP
> >
> >  Valid starting       Expires              Service principal
> >  08/06/2015 08:18:29  08/06/2015 18:18:29  krbtgt/EXAM.CORP at EXAM.CORP
> >  08/06/2015 08:18:29  08/06/2015 18:18:29  DNS/dev.exam.corp at EXAM.CORP
> >
> >which smells incorrect, because it has a service principal for
> >dev.exam.corp
> >instead of dc2.exam.corp?
> >
> >The file /etc/krb5.conf looks like this on both servers:
> >
> >  [libdefaults]
> >        default_realm = EXAM.CORP
> >        dns_lookup_realm = false
> >        dns_lookup_kdc = false
> >
> >
> >Could anyone please give me a hint on where to look further,
> >or which docs
> >to read to get this working?
> >
> >Thanks a lot,
> >
> >Roel
> >
> >--
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> >
>
>
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