[Samba] Samba4 Redundant DCs

Thomas Maerz tmaerz at brewerscience.com
Tue Oct 15 15:39:05 MDT 2013

I have semi-successfully provisioned 2 domain controllers on one domain with (I think) working replication. I followed the Samba wiki and used the sernet-samba-ad repos and packages on CentOS 6.4 x64. Questions:

Replication status has times for outbound neighbors as @ NTTIME(0) on both sides. What does this mean? dc1: http://pastebin.com/atxPraCA dc2: http://pastebin.com/V9JkwbUq
Both reports end with "Warning: No NC replicated for Connection!" What does this mean?
How does DNS replication work here? I followed this: https://wiki.samba.org/index.php/Samba4/HOWTO/Join_a_domain_as_a_DC#Check_required_DNS_entries_of_the_new_host and had to add A record by hand and also the CNAME record. When it comes to the last step which I believe to be setting the name server to the newly provisioned replicated domain's own internal DNS (I'm using internal DNS), I set /etc/resolv.conf to point at <IP address> at which point DNS won't resolve anything. Is there something I can check here to ensure this is working or do I have the wrong idea altogether here?
kinit and klist return as expected on the first domain controller (auth1) but not so on the new replicated domain controller. dc1: http://pastebin.com/21SdGMEN dc2: NEVERMIND THAT PART JUST STARTED WORKING :)

I'm very excited to be approved to put this new infrastructure into production eventually, and I appreciate the group's help to get the platform solid and reliable so I can thoroughly test it before deployment!

Thomas Maerz
Network/Systems Administrator
Brewer Science, Inc.
tmaerz at brewerscience.com
work: 	573-364-0444 x1402
cell:		573-612-1349

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