[Samba] Problems with sysrepl

[basti]

root at dc2:~# samba-tool drs replicate DC1 DC2 dc=samdom,dc=example,dc=com
--full-sync
ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync failed -
drsException: DsReplicaSync failed (31, 'WERR_GEN_FAILURE')
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/drs.py", line 568,
in run
    drs_utils.sendDsReplicaSync(server_bind, server_bind_handle,
source_dsa_guid, NC, req_options)
  File "/usr/lib/python2.7/dist-packages/samba/drs_utils.py", line 88,
in sendDsReplicaSync
    raise drsException("DsReplicaSync failed %s" % estr)

On 11.09.20 10:28, L.P.H. van Belle via samba wrote:
> 
> DC2 need IP DC1 first in the DNS, yes, BUT, the sites GUID needs to be corrected first. 
> 
> Then, reboot, things should sync.
> Then, correct IP in resolv.conf. 
> 
> If this goes wrong, you and up with 2 zones on both server that are off sync.
> I had this ones.. And yes, its always fixable. 
> 
> In worst cased, down DC2 again. 
> Sieze FSMO roles to DC1. 
> Clean AD and DNS, (and dont forget to clean sites) 
> All needs to be checked before a re-join. 
> 
> The order in this fix attempt is most important. 
> Dont rush it, take the time to clean the AD and DNS. 
> 
> Not needed to re-install DC2, its basilcy.
> 
> Cleanup /var/lib/samba (and subfolders.)
> Cleanup /var/cache/samba (and subfolders.)
> Resolv.conf to DC1 IP first, join, reboot.
> Resolv.conf to DC2 IP first 
> Down samba DC2, 
> copy Idmap DC1 to DC2
> Start samba DC2
> 
> 
> Greetz, 
> 
> Louis
> 
>> -----Oorspronkelijk bericht-----
>> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
>> Rowland penny via samba
>> Verzonden: vrijdag 11 september 2020 10:18
>> Aan: samba at lists.samba.org
>> Onderwerp: Re: [Samba] Problems with sysrepl
>>
>> On 11/09/2020 09:00, basti via samba wrote:
>>> Hello,
>>>
>>> after demote and rejoun my dc2 i have problems with replication.
>>> First of all some srv records on dc1 are missing, on dc2 
>> they are exist.
>>>
>>>
>>>
>> Start by ensuring that the nameserver in /etc/resolv.conf on 
>> dc2 points to its own ipaddress, then reboot.
>>
>> Rowland
>>
>>
>>
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> 
>