samba - Dec 2022 - Migrate and Update (Samba 4.1 ADDC to Samba Latest Version on different Server).

On 01/12/2022 18:30, Juan Ignacio wrote:
> Do you know why I cannot usethe online backup of samba-tool on the new 
> server?
> 
> root at DC2:/domain/samba/domainBackups# samba-tool domain backup online 
> --targetdir=/domain/samba/domainBackups --server=DC2 -UAdministrator
> ERROR(runtime): uncaught exception - (3221225653, '{Device Timeout} The
> specified I/O operation on %hs was not completed before the time-out 
> period expired.')
>  ? File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
> 186, in _run
>  ? ? return self.run(*args, **kwargs)
>  ? File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
> line 261, in run
>  ? ? ctx = join_clone(logger=logger, creds=creds, lp=lp,
>  ? File "/usr/lib/python3/dist-packages/samba/join.py", line
1552, in
> join_clone
>  ? ? ctx = DCCloneContext(logger, server, creds, lp, targetdir=targetdir,
>  ? File "/usr/lib/python3/dist-packages/samba/join.py", line
1576, in
> __init__
>  ? ? super(DCCloneContext, ctx).__init__(logger, server, creds, lp,
>  ? File "/usr/lib/python3/dist-packages/samba/join.py", line 101,
in
> __init__
>  ? ? ctx.site = ctx.find_dc_site(ctx.server)
>  ? File "/usr/lib/python3/dist-packages/samba/join.py", line 363,
in
> find_dc_site
>  ? ? cldap_ret = ctx.net.finddc(address=server,
> 
With python errors, the last line is usually the culprit and so it looks 
like it is timing out waiting for the search for a DC to return. We are 
back to checking the DNS for errors.

Rowland

Seems like the online backup worked if i backup the original DC "DC1",
not
if I put the new one "DC2".

Of course i'm using the command on the new server with 4.16

samba-tool domain backup online --targetdir=/domain/samba/domainBackups
--server=DC1 -UAdministrator  Worked!!

samba-tool domain backup online --targetdir=/domain/samba/domainBackups
--server=DC2 -UAdministrator NOT WORKED

Any suggestions? To check the errors.


El jue, 1 dic 2022 a las 15:36, Rowland Penny via samba (<
samba at lists.samba.org>) escribi?:
>
>
> On 01/12/2022 18:30, Juan Ignacio wrote:
>
> > Do you know why I cannot usethe online backup of samba-tool on the new
> > server?
> >
> > root at DC2:/domain/samba/domainBackups# samba-tool domain backup
online
> > --targetdir=/domain/samba/domainBackups --server=DC2 -UAdministrator
> > ERROR(runtime): uncaught exception - (3221225653, '{Device
Timeout} The
> > specified I/O operation on %hs was not completed before the time-out
> > period expired.')
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
> > 186, in _run
> >      return self.run(*args, **kwargs)
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
> > line 261, in run
> >      ctx = join_clone(logger=logger, creds=creds, lp=lp,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
1552, in
> > join_clone
> >      ctx = DCCloneContext(logger, server, creds, lp,
targetdir=targetdir,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
1576, in
> > __init__
> >      super(DCCloneContext, ctx).__init__(logger, server, creds, lp,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
101, in
> > __init__
> >      ctx.site = ctx.find_dc_site(ctx.server)
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
363, in
> > find_dc_site
> >      cldap_ret = ctx.net.finddc(address=server,
> >
>
> With python errors, the last line is usually the culprit and so it looks
> like it is timing out waiting for the search for a DC to return. We are
> back to checking the DNS for errors.
>
> Rowland
>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>

Got some more info using debug=3.

Something is wrong with lmhosts on DC2.
Im looking for some info, maybe its easy to solve.


samba-tool domain backup online --debug=3
--targetdir=/domain/samba/domainBackup --server=dc2.
<http://kronos.kennedy.edu>ourdomain.org -UAdministrator
lpcfg_load: refreshing parameters from /etc/samba/smb.conf
INFO 2022-12-01 20:25:33,087 pid:558
/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py #178: Creating
targetdir /domain/samba/domainBackup...
GENSEC backend 'gssapi_spnego' registered
GENSEC backend 'gssapi_krb5' registered
GENSEC backend 'gssapi_krb5_sasl' registered
GENSEC backend 'spnego' registered
GENSEC backend 'schannel' registered
GENSEC backend 'ncalrpc_as_system' registered
GENSEC backend 'sasl-EXTERNAL' registered
GENSEC backend 'ntlmssp' registered
GENSEC backend 'ntlmssp_resume_ccache' registered
GENSEC backend 'http_basic' registered
GENSEC backend 'http_ntlm' registered
GENSEC backend 'http_negotiate' registered
GENSEC backend 'krb5' registered
GENSEC backend 'fake_gssapi_krb5' registered
resolve_lmhosts: Attempting lmhosts lookup for name
DC2.ourdomain.org<0x20>
finddcs: No matching CLDAP server found
ERROR(runtime): uncaught exception - (3221225653, '{Device Timeout} The
specified I/O operation on %hs was not completed before the time-out period
expired.')
  File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
186,
in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
line
261, in run
    ctx = join_clone(logger=logger, creds=creds, lp=lp,

El jue, 1 dic 2022 a las 15:36, Rowland Penny via samba (<
samba at lists.samba.org>) escribi?:
>
>
> On 01/12/2022 18:30, Juan Ignacio wrote:
>
> > Do you know why I cannot usethe online backup of samba-tool on the new
> > server?
> >
> > root at DC2:/domain/samba/domainBackups# samba-tool domain backup
online
> > --targetdir=/domain/samba/domainBackups --server=DC2 -UAdministrator
> > ERROR(runtime): uncaught exception - (3221225653, '{Device
Timeout} The
> > specified I/O operation on %hs was not completed before the time-out
> > period expired.')
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
> > 186, in _run
> >      return self.run(*args, **kwargs)
> >    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain_backup.py",
> > line 261, in run
> >      ctx = join_clone(logger=logger, creds=creds, lp=lp,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
1552, in
> > join_clone
> >      ctx = DCCloneContext(logger, server, creds, lp,
targetdir=targetdir,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
1576, in
> > __init__
> >      super(DCCloneContext, ctx).__init__(logger, server, creds, lp,
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
101, in
> > __init__
> >      ctx.site = ctx.find_dc_site(ctx.server)
> >    File "/usr/lib/python3/dist-packages/samba/join.py", line
363, in
> > find_dc_site
> >      cldap_ret = ctx.net.finddc(address=server,
> >
>
> With python errors, the last line is usually the culprit and so it looks
> like it is timing out waiting for the search for a DC to return. We are
> back to checking the DNS for errors.
>
> Rowland
>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>