samba - May 2024 - Joining Linux Domain Member to Samba DC, issues

I've successfully joined several Linux hosts as Domain Members thus far; 
except for this one particular host that seems to fail in a different 
way each time I try -- I've even scratch-installed this host from 
installation DVD.

All the tests listed in 
https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member 
work. My latest attempt is as follows:

# net ads join -U administrator
Password for [HPRS\administrator]:
ldb: unable to dlopen /usr/lib64/ldb/local_password.so : 
/usr/lib64/libsamdb-common-samba4.so: version `SAMBA_4.6.16' not found 
(required by /usr/lib64/ldb/local_password.so)
ldb: unable to dlopen /usr/lib64/ldb/simple_dn.so : 
/usr/lib64/libdsdb-module-samba4.so: version `SAMBA_4.6.16' not found 
(required by /usr/lib64/ldb/simple_dn.so)
ldb: unable to dlopen /usr/lib64/ldb/simple_ldap_map.so : 
/usr/lib64/libsamdb-common-samba4.so: version `SAMBA_4.6.16' not found 
(required by /usr/lib64/ldb/simple_ldap_map.so)
Using short domain name -- HPRS
Joined 'WEBSERVER' to dns domain 'hprs.local'
DNS Update for webserver.hprs.local failed: ERROR_DNS_UPDATE_FAILED
DNS update failed: NT_STATUS_UNSUCCESSFUL

# samba --version
Version 4.18.9

A couple of points of interest: neither the Domain Controller nor the 
other Linux Domain Member on this LAN have the file 
/usr/lib64/ldb/local_password.so. On this problem child, that file is 
dated 11/28/2018. Two other files in that directory have the same date: 
simple_dn.so and simple_ldap_map.so. All the rest of the files in that 
directory have the same dates as the Domain Controller and the other 
Domain Member, 11/30/2023.

My current Samba Version on all three of these computers is 4.18.9. The 
old samba version before upgrading was 4.6.16 -- the very version listed 
above as "SAMBA_4.16.16" not found.

Before I do something stupid, I was to bounce a thought off the 
sambaList experts. I'm theorizing that the previous version of Samba 
(4.6.16) was not completely removed and left some files (like 
local_password.so) laying around.

My proposed solution is to completely uninstall Samba and any and all 
vestiges thereof, and reinstall from scratch.

Does that sound reasonable, or could I just delete these 3 old files and 
try again? Note that this host works fine doing samba shares.

Thanks --Mark

On Sun, 19 May 2024 15:26:03 -0400
Mark Foley via samba <samba at lists.samba.org> wrote:
> I've successfully joined several Linux hosts as Domain Members thus
> far; except for this one particular host that seems to fail in a
> different way each time I try -- I've even scratch-installed this
> host from installation DVD.
> 
> All the tests listed in 
> https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member 
> work. My latest attempt is as follows:
> 
> # net ads join -U administrator
> Password for [HPRS\administrator]:
> ldb: unable to dlopen /usr/lib64/ldb/local_password.so : 
> /usr/lib64/libsamdb-common-samba4.so: version `SAMBA_4.6.16' not
> found (required by /usr/lib64/ldb/local_password.so)
> ldb: unable to dlopen /usr/lib64/ldb/simple_dn.so : 
> /usr/lib64/libdsdb-module-samba4.so: version `SAMBA_4.6.16' not found 
> (required by /usr/lib64/ldb/simple_dn.so)
> ldb: unable to dlopen /usr/lib64/ldb/simple_ldap_map.so : 
> /usr/lib64/libsamdb-common-samba4.so: version `SAMBA_4.6.16' not
> found (required by /usr/lib64/ldb/simple_ldap_map.so)
> Using short domain name -- HPRS
> Joined 'WEBSERVER' to dns domain 'hprs.local'
> DNS Update for webserver.hprs.local failed: ERROR_DNS_UPDATE_FAILED
> DNS update failed: NT_STATUS_UNSUCCESSFUL
> 
> # samba --version
> Version 4.18.9
> 
> A couple of points of interest: neither the Domain Controller nor the 
> other Linux Domain Member on this LAN have the file 
> /usr/lib64/ldb/local_password.so. On this problem child, that file is 
> dated 11/28/2018. Two other files in that directory have the same
> date: simple_dn.so and simple_ldap_map.so. All the rest of the files
> in that directory have the same dates as the Domain Controller and
> the other Domain Member, 11/30/2023.
> 
> My current Samba Version on all three of these computers is 4.18.9.
> The old samba version before upgrading was 4.6.16 -- the very version
> listed above as "SAMBA_4.16.16" not found.
> 
> Before I do something stupid, I was to bounce a thought off the 
> sambaList experts. I'm theorizing that the previous version of Samba 
> (4.6.16) was not completely removed and left some files (like 
> local_password.so) laying around.
> 
> My proposed solution is to completely uninstall Samba and any and all 
> vestiges thereof, and reinstall from scratch.
> 
> Does that sound reasonable, or could I just delete these 3 old files
> and try again? Note that this host works fine doing samba shares.
> 
> Thanks --Mark
I haven't seen this for a few years, either your upgrade hasn't
upgraded everything or the upgrade hasn't removed files that it
should. Either way, I would backup any data you need from the computer
and then blow it away and start afresh.

Rowland