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Roy Eastwood

2019-Aug-29 16:20 UTC

[Samba] Online Backup Fails - list index out of range

In another thread on this list
(https://lists.samba.org/archive/samba/2019-August/225607.html), Rowland
suggested that the following
command doesn't work ie it still requests the password:

 samba-tool domain backup online --targetdir=<output-dir>
--server=<DC-server> -k yes

However, I tried it out on one of my DCs and found it created the backup but
failed at the end as this excerpt of the console output
shows:

root at tiger-db:~# kinit Administrator
Password for Administrator at MICROLYNX.ORG:
root at tiger-db:~# samba-tool domain backup online --targetdir=backups
--server=tiger-db.microlynx.org -k yes
INFO 2019-08-29 17:03:50,319 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1549: workgroup is MICROLYNX
INFO 2019-08-29 17:03:50,320 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1552: realm is microlynx.org
Calling bare provision
...
[snip]
...
Committing SAM database
INFO 2019-08-29 17:04:06,889 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
dsServiceName
INFO 2019-08-29 17:04:07,303 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
S-1-5-21-4012640977-2272627666-3977488320)
ERROR(<class 'IndexError'>): uncaught exception - list index out
of range
  File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
line 258, in run
    new_sid = get_sid_for_restore(remote_sam)
  File "/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
line 81, in get_sid_for_restore
    rid = int(res[0].get('rIDNextRID')[0])

Is this another bug?

Thanks,

Roy

Rowland penny

2019-Aug-29 16:47 UTC

head link

[Samba] Online Backup Fails - list index out of range

On 29/08/2019 17:20, Roy Eastwood wrote:> In another thread on this list
(https://lists.samba.org/archive/samba/2019-August/225607.html), Rowland
suggested that the following
> command doesn't work ie it still requests the password:
>
>   samba-tool domain backup online --targetdir=<output-dir>
--server=<DC-server> -k yes
>
> However, I tried it out on one of my DCs and found it created the backup
but failed at the end as this excerpt of the console output
> shows:
>
> root at tiger-db:~# kinit Administrator
> Password for Administrator at MICROLYNX.ORG:
> root at tiger-db:~# samba-tool domain backup online --targetdir=backups
--server=tiger-db.microlynx.org -k yes
> INFO 2019-08-29 17:03:50,319 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1549: workgroup is MICROLYNX
> INFO 2019-08-29 17:03:50,320 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1552: realm is microlynx.org
> Calling bare provision
> ...
> [snip]
> ...
> Committing SAM database
> INFO 2019-08-29 17:04:06,889 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
dsServiceName
> INFO 2019-08-29 17:04:07,303 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
> S-1-5-21-4012640977-2272627666-3977488320)
> ERROR(<class 'IndexError'>): uncaught exception - list index
out of range
>    File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 185,
in _run
>      return self.run(*args, **kwargs)
>    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
258, in run
>      new_sid = get_sid_for_restore(remote_sam)
>    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
81, in get_sid_for_restore
>      rid = int(res[0].get('rIDNextRID')[0])
>
> Is this another bug?
>
> Thanks,
>
> Roy
>
>Never got that, just kept getting asked for the Administrator password, 
after which the backup completed successfully

Check your AD.

Rowland

Roy Eastwood

2019-Aug-29 17:32 UTC

head link

[Samba] Online Backup Fails - list index out of range

> -----Original Message-----
> From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of Rowland
penny via samba
> Sent: 29 August 2019 17:48
> To: samba at lists.samba.org
> Subject: Re: [Samba] Online Backup Fails - list index out of range
> 
> On 29/08/2019 17:20, Roy Eastwood wrote:
> > In another thread on this list
(https://lists.samba.org/archive/samba/2019-August/225607.html), Rowland
suggested that the
> following
> > command doesn't work ie it still requests the password:
> >
> >   samba-tool domain backup online --targetdir=<output-dir>
--server=<DC-server> -k yes
> >
> > However, I tried it out on one of my DCs and found it created the
backup but failed at the end as this excerpt of the console
output> > shows:
> >
> > root at tiger-db:~# kinit Administrator
> > Password for Administrator at MICROLYNX.ORG:
> > root at tiger-db:~# samba-tool domain backup online
--targetdir=backups --server=tiger-db.microlynx.org -k yes
> > INFO 2019-08-29 17:03:50,319 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1549: workgroup is MICROLYNX
> > INFO 2019-08-29 17:03:50,320 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1552: realm is microlynx.org
> > Calling bare provision
> > ...
> > [snip]
> > ...
> > Committing SAM database
> > INFO 2019-08-29 17:04:06,889 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
> dsServiceName
> > INFO 2019-08-29 17:04:07,303 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
> > S-1-5-21-4012640977-2272627666-3977488320)
> > ERROR(<class 'IndexError'>): uncaught exception - list
index out of range
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 185,
in _run
> >      return self.run(*args, **kwargs)
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
258, in run
> >      new_sid = get_sid_for_restore(remote_sam)
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
81, in get_sid_for_restore
> >      rid = int(res[0].get('rIDNextRID')[0])
> >
> > Is this another bug?
> >
> > Thanks,
> >
> > Roy
> >
> >
> Never got that, just kept getting asked for the Administrator password,
> after which the backup completed successfully
> 
> Check your AD.
> 
> Rowland
samba-tool dbcheck --cross-ncs shows no errors, and running Louis' 
samba-check-db-repl.sh script shows that replication between
the two DCs is working OK, as is sysvol replication.   There are no errors in
the samba logs and I have not seen any problems with
the operation of the domain.   What else to check?

FWIW the samba version is 4.10.6 from Louis' repo running on Debian Buster.

Roy

Tim Beale

2019-Aug-29 21:07 UTC

head link

[Samba] Online Backup Fails - list index out of range

On 30/08/19 4:20 AM, Roy Eastwood via samba wrote:> INFO 2019-08-29 17:04:06,889 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
dsServiceName
> INFO 2019-08-29 17:04:07,303 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
> S-1-5-21-4012640977-2272627666-3977488320)
> ERROR(<class 'IndexError'>): uncaught exception - list index
out of range
>   File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py",
line 185, in _run
>     return self.run(*args, **kwargs)
>   File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
258, in run
>     new_sid = get_sid_for_restore(remote_sam)
>   File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
81, in get_sid_for_restore
>     rid = int(res[0].get('rIDNextRID')[0])
>
> Is this another bug?
It's not really a bug. The backup process needs to allocate a new RID
and the DC you're running the backup against doesn't have a RID pool
allocated. E.g. see:

https://lists.samba.org/archive/samba/2019-February/221619.html

I have improved the error message you get in this case on master, but I
haven't backported this yet.

Roy Eastwood

2019-Aug-29 21:59 UTC

head link

[Samba] Online Backup Fails - list index out of range

> -----Original Message-----
> From: Tim Beale [mailto:timbeale at catalyst.net.nz]
> Sent: 29 August 2019 22:08
> To: Roy Eastwood; samba at lists.samba.org
> Subject: Re: [Samba] Online Backup Fails - list index out of range
> 
> On 30/08/19 4:20 AM, Roy Eastwood via samba wrote:
> > INFO 2019-08-29 17:04:06,889 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1643: Setting isSynchronized and
> dsServiceName
> > INFO 2019-08-29 17:04:07,303 pid:13945
/usr/lib/python3/dist-packages/samba/join.py #1555: Cloned domain MICROLYNX (SID
> > S-1-5-21-4012640977-2272627666-3977488320)
> > ERROR(<class 'IndexError'>): uncaught exception - list
index out of range
> >   File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 185,
in _run
> >     return self.run(*args, **kwargs)
> >   File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
258, in run
> >     new_sid = get_sid_for_restore(remote_sam)
> >   File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py", line
81, in get_sid_for_restore
> >     rid = int(res[0].get('rIDNextRID')[0])
> >
> > Is this another bug?
> 
> It's not really a bug. The backup process needs to allocate a new RID
> and the DC you're running the backup against doesn't have a RID
pool
> allocated. E.g. see:
> 
> https://lists.samba.org/archive/samba/2019-February/221619.html
> 
> I have improved the error message you get in this case on master, but I
> haven't backported this yet.
Thanks for that.   I still don't understand though as the DC on which I am
doing the backup is the RIDAllocationMasterRole owner (actually it owns all the
FSMO roles), so shouldn't it be able to provide a new RID?      Or am I
missing something?

Roy

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