[Samba] Fw: Print Server not staying working

[Umesh Thakur]

Hi there,

I am still waiting your response on this. Please bring your attention to below forwarded email. Thank you

Kind regards,

Umesh Thakur​
Technical Analyst
School District No.57

Note: Please use ticketing system for technical support
________________________________
From: samba <samba-bounces at lists.samba.org> on behalf of Umesh Thakur via samba <samba at lists.samba.org>
Sent: October 27, 2023 9:32 AM
To: samba at lists.samba.org <samba at lists.samba.org>
Subject: [Samba] Print Server not staying working

CAUTION: External Email. This email originated from outside of the SD57 district email system. Do Not click on links or open attachments, unless you are confident about the source.


Hi there,

Samba Version 4.17.12-Debian

I am having to constantly restart winbind and smbd in order for my client machines to print.

Every 5 or so minutes, the printers from this print server appear as "Server offline" in Windows. If I restart smbd and winbind at the same time, they come back for a bit, and everyone can print as per normal.

I have seen the bug report to delete printer_list.tdb, and done that yesterday. In the log.rpcd_spoolss file, I see entries such as this below:

[2023/10/26 09:27:21,  0] ../../librpc/rpc/dcesrv_handles.c:130(dcesrv_handle_lookup)
  dcesrv_handle_lookup: Attempt to use invalid sid S-1-5-21-3018909051-3044254431-1064828747-1113 - S-1-5-21-3018909051-3044254431-1064828747-1291
[2023/10/26 09:27:21,  0] ../../librpc/rpc/dcesrv_handles.c:130(dcesrv_handle_lookup)
  dcesrv_handle_lookup: Attempt to use invalid sid S-1-5-21-3018909051-3044254431-1064828747-1113 - S-1-5-21-3018909051-3044254431-1064828747-1291

The SIDs are valid, and point to a logged on user and their workstation.

The winbindd.log file has thousands of entries like these:

[2023/10/26 09:28:58.028357,  1] ../../source3/winbindd/wb_lookupsids.c:667(wb_lookupsids_recv)
  Failed with NT_STATUS_INVALID_SID.
[2023/10/26 09:28:58.028372,  1] ../../source3/winbindd/wb_sids2xids.c:765(wb_sids2xids_recv)
  Failed with NT_STATUS_INVALID_SID.
[2023/10/26 09:28:58.028385,  1] ../../source3/winbindd/winbindd_sids_to_xids.c:113(winbindd_sids_to_xids_recv)
  Could not convert sids: NT_STATUS_INVALID_SID
[2023/10/26 09:28:58.028413,  1] ../../source3/winbindd/wb_sids2xids.c:368(wb_sids2xids_lookupsids_done)
  Failed with NT_STATUS_INVALID_SID.

Below is the sanitized smb.conf file:

[global]
   bind interfaces only = Yes
   client signing = required
   disable netbios = Yes
   interfaces = lo enp1s0
   log file = /var/log/samba/%m.log
   log level = 1
   realm = DUCH.AD.EXAMPLE.CA
   security = ADS
   server role = member server
   server signing = required
   template homedir = /home/duch/%U
   template shell = /bin/false
   winbind nss info = template
   winbind separator = /
   workgroup = DUCH
   idmap config * : backend = tdb
   idmap config * : range = 70000-99999
   idmap config duch : backend = rid
   idmap config duch : range = 100000-1999999

   spoolss: architecture = Windows x64
   rcpd_spoolss:idle_seconds=30
   rpcd_spoolss:num_workers = 10
   username map = /etc/samba/user.map
   min domain uid = 0

   map acl inherit = Yes
   printing = CUPS
   store dos attributes = Yes
   vfs objects = acl_xattr
   printcap name = /var/run/cups/printcap
   printcap cache time = 60

[printers]
   browseable = No
   path = /var/spool/samba/
   printable = Yes

[print$]
   path = /usr/local/share/printer_drivers/
   read only = No

Kind regards,

Umesh Thakur​
Technical Analyst
School District No.57

Note: Please use ticketing system for technical support
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