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Re: [Samba] Possibly WERR_DS_DRA_ACCESS_DENIED or NT_STATUS_CANT_ACCESS_DOMAIN_INFO




Hai, 

In addition to Rowlands last mail. 

I see wrong rights in /var/lib/samba/private 
You want : drwxr-xr-x   7 root root                      4096 May  6 13:06 private

Missing bind (named.conf.option)
In options { 
	empty-zones-enable no;
	auth-nxdomain yes;    # This server IS authorive for the AD-DC zones. 
	// to use new samba backup onnline tool, you also need auth-nxdomain yes; // 

	tkey-gssapi-keytab "/var/lib/samba/private/dns.keytab"; // BEFORE Samba 4.9
	//tkey-gssapi-keytab "/var/lib/samba/bind-dns/dns.keytab"; // AFTER Samba 4.9.x 
	// Note, its observice that dns.keytab is not moved during the upgrade 
	// move it manualy.

Add in named.conf.local 
// adding the dlopen ( Bind DLZ ) module for samba
include "/var/lib/samba/private/dns/named.conf"; // BEFORE Samba 4.9
//include "/var/lib/samba/bind-dns/named.conf";	// AFTER Samba 4.9.x 


Make sure your resolv.conf has.
nameserver 192.168.1.254
search domain1.domain

How, what i would do here, start clean or stop the needed services and manualy cleanup. 

Cleanup /var/lib/samba/* 
Cleanup /var/cache/samba/* 

Check if bind9 is running. 

Clean up in the AD, computer name, alias links etc. 
Clean up in AD-DNS, A PTR records. 
Dont forget _msdc zone to check. 

Then then thats done, now try to join again. 



Greetz, 

Louis



> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces@xxxxxxxxxxxxxxx] Namens 
> James Fowler via samba
> Verzonden: maandag 6 mei 2019 13:07
> Aan: Rowland Penny
> CC: samba@xxxxxxxxxxxxxxx
> Onderwerp: Re: [Samba] Possibly WERR_DS_DRA_ACCESS_DENIED or 
> NT_STATUS_CANT_ACCESS_DOMAIN_INFO
> 
> Inline reply.
> 
> On Fri, May 3, 2019 at 3:08 AM Rowland Penny via samba <
> samba@xxxxxxxxxxxxxxx> wrote:
> 
> > On Thu, 2 May 2019 16:51:02 -0400
> > James Fowler <fowlerj@xxxxxxxx> wrote:
> >
> > See inline comments
> >
> > > root@DC2:~# cat /etc/resolv.conf
> > > # Dynamic resolv.conf(5) file for glibc resolver(3) generated by
> > > resolvconf(8)
> > > # and managed by Zentyal.
> > > #
> > > #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE
> > > OVERWRITTEN #
> > > nameserver 192.168.1.254
> > > #search domain1.domain
> >
> I would do two things here, the first is 'apt-get purge resolvconf',
> > you do not want anything changing /etc/resolv.conf on a DC.
> >
> 
>  It looks like many packages are set to be dependent on 
> resolvconf that I
> need on this system.  I ended up unlinking it, making the changes you
> recommended and then setting it to immutable (chattr +i).  I also did
> systemctl disable resolvconf.
> 
> The second is, uncomment the 'search' line.
> >
> > There is also that word 'Zentyal', was/is this computer a 
> Zentyal DC ?
> >
>  Yes.
> 
> >
> > >
> > > /etc/hostname
> > > cat /etc/hostname
> > > DC2
> > >
> > > /etc/hosts
> > > root@DC2:~cat /etc/hosts
> > > 127.0.0.1       localhost.localdomain localhost
> > > 127.0.1.1       DC2.DOMAIN1.DOMAIN DC2
> > > 192.168.1.19    otherserver.DOMAIN1.DOMAIN otherserver
> > > 192.168.1.20    DC2.DOMAIN1.DOMAIN DC2
> > > 192.168.1.254   DC1.DOMAIN1.local DC1
> > >
> >
> > You should only have the new DC's info in /etc/hosts, anything else
> > should be found by DNS. There is also '127.0.1.1' , is there another
> > DNS server running ? (dnsmasq, netplan etc)
> >
> Only bind9 is running.  The 127.0.1.1 entry comes from a 
> failed attempt to
> resolve issues.  I commented it out.  Thank you.
> 
> 
> > > root@DC2:/etc/bind# cat named.conf
> > > include "/etc/bind/named.conf.options";
> > > include "/etc/bind/keys";
> >
> > You do not need the '/etc/bind/keys' line
> >
> removed.
> 
> >
> > >
> > > // prime the server with knowledge of the root servers
> > > zone "." {
> > >         type hint;
> > >         file "/etc/bind/db.root";
> > > };
> > >
> > > // be authoritative for the localhost forward and reverse 
> zones, and
> > > for // broadcast zones as per RFC 1912
> > >
> > > zone "localhost" {
> > >         type master;
> > >         file "/etc/bind/db.local";
> > > };
> > >
> > > zone "127.in-addr.arpa" {
> > >         type master;
> > >         file "/etc/bind/db.127";
> > > };
> > >
> > > zone "0.in-addr.arpa" {
> > >         type master;
> > >         file "/etc/bind/db.0";
> > > };
> > >
> > > zone "255.in-addr.arpa" {
> > >         type master;
> > >         file "/etc/bind/db.255";
> > > };
> >
> > Why is the above in /etc/bind/named.conf ?
> > There should just be an include line like this:
> >
> > include "/etc/bind/named.conf.default-zones";
> >
> When I this added to the end of the named.conf file bind9 
> wouldn't run and
> complained:
> named-checkconf
> /etc/bind/named.conf.default-zones:2: zone '.': already 
> exists previous
> definition: /etc/bind/named.conf:5
> /etc/bind/named.conf.default-zones:10: zone 'localhost': 
> already exists
> previous definition: /etc/bind/named.conf:13
> /etc/bind/named.conf.default-zones:15: zone 
> '127.in-addr.arpa': already
> exists previous definition: /etc/bind/named.conf:18
> /etc/bind/named.conf.default-zones:20: zone '0.in-addr.arpa': already
> exists previous definition: /etc/bind/named.conf:23
> /etc/bind/named.conf.default-zones:25: zone 
> '255.in-addr.arpa': already
> exists previous definition: /etc/bind/named.conf:28
> 
> Is it a problem to not have it calling 
> named.conf.default-zones?  It has
> the same information repeated in named.conf.  Is it better to 
> comment out
> those entries there and have it called from named.conf.default-zones?
> 
> 
> > > root@DC2:/etc/bind# cat named.conf.local
> > > // Generated by Zentyal
> >
> > Why? they seem to be making a right mess of it ;-)
> >
> Tell me about it!   It is kind of crazy the proliferation of 
> named.conf
> files, zones, etc.
> 
> >
> > Mine is just:
> >
> > include "/var/lib/samba/bind-dns/named.conf";
> >
> 
> Presently, I have nothing in the 
> /var/lib/samba/bind-dns/named.conf path:
> root@dc2:/etc# ll /var/lib/samba/
> total 1412
> drwxr-xr-x   8 root root            4096 May  2 09:03 ./
> drwxr-xr-x  60 root root            4096 Apr 29 20:17 ../
> -rw-------   1 root root          421888 Apr 25 11:42 
> account_policy.tdb
> -rw-------   1 root root             696 Apr 25 11:42 
> group_mapping.tdb
> drwxr-x---   2 root ntp             4096 Apr 30 00:14 ntp_signd/
> drwxr-xr-x  10 root root            4096 Apr 25 11:39 printers/
> drwxr-x---   5 root bind            4096 May  2 12:50 private/
> -rw-------   1 root root          528384 Apr 25 11:42 registry.tdb
> -rw-------   1 root root          421888 Apr 25 11:42 share_info.tdb
> drwxrwx---+  3 root adm             4096 Apr 30 08:19 sysvol/
> drwxrwx--T   2 root sambashare      4096 Apr 25 11:42 usershares/
> -rw-------   1 root root           32768 May  2 09:03 
> winbindd_cache.tdb
> drwxr-x---   2 root winbindd_priv   4096 Apr 30 00:14 
> winbindd_privileged/
> 
> root@dc2:/etc# ll /var/lib/samba/private/
> total 10896
> drwxr-x--- 5 root bind    4096 May  2 12:50 ./
> drwxr-xr-x 8 root root    4096 May  2 09:03 ../
> -rw-r--r-- 1 root root    3663 May  2 12:50 dns_update_list
> -rw------- 1 root root 1286144 May  2 12:50 hklm.ldb
> -rw------- 1 root root 1286144 May  2 12:50 idmap.ldb
> -rw-r--r-- 1 root root      94 May  2 12:50 krb5.conf
> drwx------ 2 root root    4096 May  2 11:36 msg.sock/
> -rw------- 1 root root    8888 May  2 09:03 netlogon_creds_cli.tdb
> -rw------- 1 root root 1286144 May  2 12:50 privilege.ldb
> -rw------- 1 root root 4247552 May  2 12:50 sam.ldb
> drwx------ 2 root root    4096 May  2 12:50 sam.ldb.d/
> -rw------- 1 root root 1286144 May  2 12:50 secrets.ldb
> -rw-rwx--- 1 root bind  430080 May  2 09:03 secrets.tdb*
> -rw------- 1 root root 1286144 Apr 30 08:19 share.ldb
> -rw-r--r-- 1 root root     955 May  2 12:50 spn_update_list
> drwx------ 2 root root    4096 Apr 30 08:19 tls/
> 
> 
> > >
> > > root@DC2:/etc/bind# cat named.conf.options
> > >
> > > options {
> > >      sortlist {
> > >             { 192.168.1.0/24 ;{ 192.168.1.0/24 ; };};
> > >     };
> > >     directory "/var/cache/bind";
> > >     auth-nxdomain no;    # conform to RFC1035
> > >
> > >     allow-query { any; };
> > >     allow-recursion { trusted; };
> > >     allow-query-cache { trusted; };
> > >     allow-transfer { internal-local-nets; };
> > > };
> > >
> > > logging { category lame-servers { null; }; };
> >
> > If that again is managed by Zentyal, well they got some 
> things right,
> > but missed a major thing, this is mine:
> >
> > options {
> >     directory "/var/cache/bind";
> >     version "0.0.7";
> >     notify no;
> >     empty-zones-enable no;
> >     allow-query { 127.0.0.1; 192.168.0.0/24; };
> >     allow-recursion {  192.168.0.0/24; 127.0.0.1/32; };
> >     forwarders { 8.8.8.8; 8.8.4.4; };
> >     allow-transfer { none; };
> >     dnssec-validation no;
> >     dnssec-enable no;
> >     dnssec-lookaside no;
> >     listen-on-v6 { none; };
> >     listen-on port 53 { 192.168.0.6; 127.0.0.1; };
> >
> >     tkey-gssapi-keytab "/var/lib/samba/bind-dns/dns.keytab";
> > };
> >
> > From all this, it is clear your DNS is not working as a Samba  AD DC
> > would expect.
> >
> > Rowland
> >
> Thank you Rowland!
> 
> I replaced my named.conf.options with yours (and made the 
> changes above),
> restarted bind9 and then tried to join again, but still get 
> the same error:
> 
> Join failed - cleaning up
> ldb_wrap open of secrets.ldb
> Could not find machine account in secrets database: Failed to 
> fetch machine
> account password for DOMAIN1 from both secrets.ldb (Could not 
> find entry to
> match filter: '(&(flatname=DOMAIN1)(objectclass=primaryDomain))' base:
> 'cn=Primary Domains': No such object: dsdb_search at
> ../source4/dsdb/common/util.c:4636) and from
> /var/lib/samba/private/secrets.tdb: NT_STATUS_CANT_ACCESS_DOMAIN_INFO
> Deleted CN=DC2,OU=Domain Controllers,DC=DOMAIN1,DC=DOMAIN
> Deleted CN=dns-DC2,CN=Users,DC=DOMAIN1,DC=DOMAIN
> Deleted CN=NTDS
> Settings,CN=DC2,CN=Servers,CN=Default-First-Site,CN=Sites,CN=C
> onfiguration,DC=DOMAIN1,DC=DOMAIN
> Deleted
> CN=DC2,CN=Servers,CN=Default-First-Site,CN=Sites,CN=Configurat
> ion,DC=DOMAIN1,DC=DOMAIN
> ERROR(runtime): uncaught exception - (8453, 
> 'WERR_DS_DRA_ACCESS_DENIED')
>   File 
> "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line
> 176, in _run
>     return self.run(*args, **kwargs)
>   File 
> "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 661,
> in run
>     machinepass=machinepass, use_ntvfs=use_ntvfs, 
> dns_backend=dns_backend)
>   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1474, in
> join_DC
>     ctx.do_join()
>   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1377, in
> do_join
>     ctx.join_replicate()
>   File "/usr/lib/python2.7/dist-packages/samba/join.py", line 961, in
> join_replicate
>     exop=drsuapi.DRSUAPI_EXOP_FSMO_RID_ALLOC)
>   File "/usr/lib/python2.7/dist-packages/samba/drs_utils.py", 
> line 291, in
> replicate
>     (level, ctr) = self.drs.DsGetNCChanges(self.drs_handle, 
> req_level, req)
> 
>  Thanks,
> 
> James
> 
> >
> > --
> > To unsubscribe from this list go to the following URL and read the
> > instructions:  https://lists.samba.org/mailman/options/samba
> >
> 
> 
> -- 
> James Fowler
> Association for Diplomatic Studies and Training http://adst.org
> Capturing, Preserving, Sharing - Oral Histories of US Diplomacy
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
> 
> 


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