[Samba] NT_STATUS_INTERNAL_ERROR from RPC server on samba 4.5.8 AD DC

[Rowland Penny]

On Tue, 17 Oct 2017 13:18:46 +0100
Richard Connon via samba <samba at lists.samba.org> wrote:

> 
> 
> On 17/10/2017 09:54, Rowland Penny via samba wrote:
> > On Tue, 17 Oct 2017 09:29:00 +0100
> > Richard Connon via samba <samba at lists.samba.org> wrote:
> >
> >> On 16/10/2017 19:30, Rowland Penny wrote:
> >>> Is the member server using DHCP ?
> >> Yes. Both test hosts are using DHCP with static leases for IP
> >> addresses but not for DNS domains or nameservers.
> > I wouldn't do this, I would give the DC a fixed ipaddress.
> In my production environment my DC(s) have fixed IP addresses, the
> use of DHCP is only in my lab environment. Do you see a problem with
> doing this as long as the IPs don't change during testing? (they are
> static leases)
> >>> Is '10.0.2.15' the ipaddress of the DC ?
> >> Yes
> >>> You haven't got 'security = ADS' in your smb.conf.
> >> Assuming you mean on the member, good point, but it doesn't change
> >> this behaviour. My understanding was this only affected smbd
> >> anyway, which I'm not running on the member.
> > You need it
> OK. I've set it now and see no change in behaviour.
> >>> You have 'unix password sync = yes' in smb.conf,
> >>> Do you have Unix users that are also in AD ?
> >> No, this is just a default smb.conf from debian. I assume this
> >> wouldn't actually have any affect on a member server where there is
> >> no local passdb anyway and again, removing it has no affect.
> > It wouldn't help.
> I've removed this now and see no change in behaviour.
> > And finally the biggy, are you using sssd ?
> >> No, these test hosts are very basic debian installs I've done to
> >> attempt to isolate this problem, although my "production" installs
> >> use SSSD.
> > Then it is never going to work, you have not set up winbind at all.
> >
> > Can I suggest you go and read this:
> >
> > https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member
> >
> > I suggest you follow it and use the 'rid' backend.
> Again, this is a production/lab difference. I didn't setup SSSD in
> the lab to reduce the complexity. I'm simply trying to get the actual
> join process working. I will follow through that wiki anyway to check
> there's nothing I've missed though.
> > Rowland
> >

Try this smb.conf on the domain member:

[global]
    workgroup = TEST
    security = ADS
    realm = ADS.TEST.LOCAL

    winbind use default domain = yes
    winbind expand groups = 4
    winbind refresh tickets = Yes
    winbind offline logon = yes

    idmap config *:backend = tdb
    idmap config *:range = 2000-9999
    idmap config TEST : backend = rid
    idmap config TEST : range = 10000-999999
    template shell = /bin/bash
    template homedir = /home/%U

    domain master = no
    local master = no
    preferred master = no
    os level = 20
    map to guest = bad user
    host msdfs = no

    vfs objects = acl_xattr
    map acl inherit = Yes
    store dos attributes = Yes

If 'net ads join -U Administrator' doesn't work, then you need to look
elsewhere, is a firewall in the way, is Apparmor running and getting in
the way 

Rowland