[Samba] Secondary Samba4 DC doesn't show up in "host -t SVR _ldap..." output.

L.P.H. van Belle belle at bazuin.nl
Thu Jul 10 02:32:42 MDT 2014


did you do the check on PTR records for the second server. 
If not, please check, and add if they are not there. 

than, reboot ;-), after reboot check again. 

and.. 
you post : 
>host -t SRV _ldap._tcp.central.tcmc.com.br 
>I'm seeing only the "Primary DC" there, like this:
>
>---
>_ldap._tcp.central.tcmc.com.br has SRV record 0 100 389
>ubuntu-ad-1.central.tcmc.com.br.

the windows servers. ...  
>root at ubuntu-desk-1:~# host -t SRV _ldap._tcp.tcmc.intranet
>_ldap._tcp.tcmc.intranet has SRV record 0 100 389 
>adserver03.tcmc.intranet.

I see 2 different odmains.. it this correct? 
old and new network.? 




>-----Oorspronkelijk bericht-----
>Van: thiagocmartinsc at gmail.com 
>[mailto:samba-bounces at lists.samba.org] Namens Martinx - ???????????????
>Verzonden: donderdag 10 juli 2014 10:14
>Aan: samba at lists.samba.org
>Onderwerp: [Samba] Secondary Samba4 DC doesn't show up in 
>"host -t SVR _ldap..." output.
>
>Guys,
>
>I just deployed "Samba4 AC DC", with a Secondary DC in place, the
>replication seems to be working as expected, the command 
>"samba-tool drs
>showrepl" shows INBOUND / OUTBOUND / KCC CONNECTIONS, plus, 
>"log level = 3"
>on both servers shows a lot of information about the replication...
>
>
>But, when I run:
>
>---
>host -t SRV _ldap._tcp.central.tcmc.com.br
>---
>
>I'm seeing only the "Primary DC" there, like this:
>
>---
>_ldap._tcp.central.tcmc.com.br has SRV record 0 100 389
>ubuntu-ad-1.central.tcmc.com.br.
>---
>
>
>But, the current "Windows AD Servers" that I have up and 
>running, shows all
>3 AD Servers, like this:
>
>---
>root at ubuntu-desk-1:~# host -t SRV _ldap._tcp.tcmc.intranet
>_ldap._tcp.tcmc.intranet has SRV record 0 100 389 
>adserver03.tcmc.intranet.
>_ldap._tcp.tcmc.intranet has SRV record 0 100 389 
>adserver02.tcmc.intranet.
>_ldap._tcp.tcmc.intranet has SRV record 0 100 389 
>adserver01.tcmc.intranet.
>---
>
>My plan is to remove those "Windows AD", by Samba4 AD and, now, I'm not
>sure if the "Secondary DC" is active, or not...
>
>More info:
>
>---
>root at ubuntu-ad-1:~# lsb_release -ra
>No LSB modules are available.
>Distributor ID: Ubuntu
>Description:    Ubuntu 14.04 LTS
>Release:        14.04
>Codename:       trusty
>
>root at ubuntu-ad-1:~# samba -V
>Version 4.1.6-Ubuntu
>---
>
>Domain provisioned with:
>---
>samba-tool domain provision --realm central.tcmc.com.br --domain TCMC
>--adminpass 123456Test --server-role=dc --use-xattr=yes --use-rfc2307
>--function-level=2008_R2 --dns-backend=BIND9_DLZ
>---
>
>Secondary DC joined with:
>---
>samba-tool domain join central.tcmc.com.br DC -Uadministrator --realm=
>central.tcmc.com.br --dns-backend=BIND9_DLZ
>---
>
>Secondary DC IPs manually registered with:
>---
>samba-tool dns add 192.168.15.221 central.tcmc.com.br
>ubuntu-ad-2.central.tcmc.com.br A 192.168.15.222 -Uadministrator
>samba-tool dns add 2001:1291:2bf:fffa::66 central.tcmc.com.br
>ubuntu-ad-2.central.tcmc.com.br AAAA 2001:1291:2bf:fffa::99 
>-Uadministrator
>samba-tool dns add 192.168.15.221 _msdcs.central.tcmc.com.br
>f8dbeaed-ae73-4e62-9b9b-02af880d084b CNAME 
>ubuntu-ad-2.central.tcmc.com.br
>-Uadministrator
>---
>
>---
>root at ubuntu-ad-1:~# samba-tool domain level show
>ldb_wrap open of secrets.ldb
>Domain and forest function level for domain
>'DC=central,DC=tcmc,DC=com,DC=br'
>
>Forest function level: (Windows) 2008 R2
>Domain function level: (Windows) 2008 R2
>Lowest function level of a DC: (Windows) 2008 R2
>---
>
>So, why Secondary DC (ubuntu-ad-2), which is another Samba4 on top of
>Ubuntu 14.04 (almost a clone of PDC ubuntu-ad-1), doesn't get 
>its _ldap DNS
>entry? Can I manually add it? I'm thinking that if it is not there,
>something is wrong, so, it is not safe to point it by hand, am I right?
>
>Thanks!
>Thiago
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>



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