[Samba] FSMO commands not working on 4.3.1

[George]

On Mon, Dec 21, 2015 at 8:38 PM, Hiroshi K <k.hiroshi at gmail.com> wrote:

> I go to the same that I upgraded Samba 4.0.x to 4.3.x,
> and getting same (previously quoted) error.
> (Tested on Debian 7,8 and CentOS 7 and got the same error)
>
> I managed to solve the problem, and I'll share the info,
> hoping it'll solve yours and future releases to be better.
>
>
> The error I also got is the same as George, so I'll quote his
> (the point is 'No such element')
>
> >>>* ---------
> *>>>* root at dc2 <https://lists.samba.org/mailman/listinfo/samba>:~#
> samba-tool fsmo show
> *>>>* ERROR(<type 'exceptions.KeyError'>): uncaught exception - 'No such
> *>>>* element'
> *>>>*     File
> "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line
> *>>>* 175, in _run
> *>>>*       return self.run(*args, **kwargs)
> *>>>*     File "/usr/lib/python2.7/dist-packages/samba/netcmd/fsmo.py",
> line 395,
> *>>>* in run
> *>>>*       domaindnszonesMaster = get_fsmo_roleowner(samdb, domaindns_dn)
> *>>>*     File "/usr/lib/python2.7/dist-packages/samba/netcmd/fsmo.py",
> line 42,
> *>>>* in
> *>>>* get_fsmo_roleowner
> *>>>*       master_owner = res[0]["fSMORoleOwner"][0]
> *>>>
>
> * ---------*
>
> Follwing command returned a record, but without fSMORoleOwner
>
>
> $ /usr/local/samba/bin/ldbsearch -H /usr/local/samba/private/sam.ldb
> --cross-ncs --show-binary -b
> "CN=Infrastructure,DC=ForestDnsZones,DC=test,DC=local" fSMORoleOwner
>
> # record 1
> dn: CN=Infrastructure,DC=ForestDnsZones,DC=test,DC=local
> (*** without fSMORoleOwner here ***)
>
>
> It seemed that the my case (upgrading from Samba 4.0.x),
> there was no ForestDns/DomainDnsZone entries with riht FSMO server name...
>
> And so, I prepared ldif file & loaded to edit it
>
> $ cat ldb.ldif
> dn: CN=Infrastructure,DC=DomainDnsZones,dc=test,dc=local
> changetype: modify
> replace: fSMORoleOwner
> fSMORoleOwner: CN=NTDS
>
> Settings,CN=SAMBA4-DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
>
> $ /usr/local/samba/bin/ldbmodify -H /usr/local/samba/private/sam.ldb
> --cross-ncs ./ldb.ldif
> Modified 1 records successfully
>
>
> After, fsmo works properly (tested with Samba 4.3.3 on Debian 8 and CentOS
> 7).
>
> $ /usr/local/samba/bin/samba-tool fsmo show
> SchemaMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> InfrastructureMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> RidAllocationMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> PdcEmulationMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> DomainNamingMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> DomainDnsZonesMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
> ForestDnsZonesMasterRole owner: CN=NTDS
>
> Settings,CN=SAMBA4-DC,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=test,DC=local
>
>
> I hope it helps!
> <https://lists.samba.org/mailman/options/samba>
>

This made the trick, thanks a lot!!

The roles did exist, but there was no fSMORoleOwner assigned. Is this worth
a bug report? I guess this is likely to happen to all upgrades from
previous Samba versions.

Best regards.