[Samba] samba4 replication issues | sam.ldb inconsistency

L.P.H. van Belle belle at bazuin.nl
Wed Jul 9 07:00:13 MDT 2014

In you case, i would go for a new install. 

Add DC3 to the domain, check the database. 
move the FSMO Roles to this server.

Why a new install, easier to check for errors. 
and ... Dont hurry to much, give the system time to set things. 
sychronizing takes time.. so be patient. 

and ( in my case ) takes much less time to fix than solving the problem. 
and 1 importent thing, if you do this on a VM, set DC3 to atleast 8GB Ram. 
with virtual DC's you set setup within 15 min. ( 5 min for an extra dc for me with my scripts ;-) )
This is also why i dont use a DC for other things the being a DC. 
Very fast recovering and new installs. 


>-----Oorspronkelijk bericht-----
>Van: heupink at merit.unu.edu 
>[mailto:samba-bounces at lists.samba.org] Namens mourik jan 
>heupink - merit
>Verzonden: woensdag 9 juli 2014 14:31
>Aan: samba at lists.samba.org
>Onderwerp: Re: [Samba] samba4 replication issues | sam.ldb 
>Hi achim, list
>> If one of your two DC's is still working flawless you can try to move
>> all fsmo roles to that server and rejoin the other one.
>But I'm not *sure* that one of my dc's is in perfect shape. I *know* 
>that the DC=DOMAINDNSZONES on dc1 is corrupt.
>DC2 seems to be fine, however, samba-tool dbcheck cross-ncs 
>never stops 
>checking, and has been running for 18 hours now. So perhaps dc2 is not 
>healthy too?
>samba-tool fsmo show tells me that all roles are currently on the DC1.
>I'm a bit hesitant to start messing with my AD (transferring roles, 
>etc), because of the uncertain state it seems to be in. I'm 
>not sure if 
>I'll be able to reverse it, if this goes terribly wrong.
>If I *knew* that DC2 is healthy, I could transfer all roles 
>there, etc. 
>But as Daniel said: he had to reinstall a DC because of "samba-tool 
>dbcheck cross-ncs" that never ended. (like the situation on my DC2)
>> Seems tdbbackup works on dc1 for
>the backup
>> fixes your issues.
>So, is it possible to use take the 
>and copy it to the problem dc? Can I overwrite the corrupt file with 
>another dc's file?
>Or is my best bet now to install a DC3, and see what gets 
>replicated to 
>that new dc?
>> achim~
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