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KB-0446: How to Collect Debug Logs from a Samba Server

Centrify DirectControl ,   Centrify DirectControl Plugins ,  

17 September,16 at 12:52 AM

Applies To: All versions of Centrify DirectControl-enabled Samba and stock Samba

What is the process to collect debug Logs from a Samba Server?

Please do the following as root or sudo:

1. Login to the samba server and run where username is the Centrify user who is attempting access to the Samba server.

# adquery user -A <sambausername> > /tmp/adquery.txt
# smbclient -k -L <hostname> (this command will list Samba shares)

2. Using your favorite editor, edit the /etc/samba/smb.conf to include the following lines in the [globals] section as follows: 

log level = 10 
log file = /var/log/samba/smb.log 
max log size = 0 

3. Run below command after saving the changes to verify any syntax errors in smb.conf:

# testparm

4. Restart Samba to get it to pick up the smb.conf changes right away by running: 

# /etc/init.d/smb restart 

5.  Turn on debug:

# /usr/share/centrifydc/bin/addebug on 
# /usr/share/centrifydc/bin/addebug clear 

6.  For troubleshooting Samba issues from Windows,  you need a tool like Wireshark. If you do not have it, please download it from the below location. Note: wireshark is NOT a Centrify tool.

7. Log out of Windows and login again or simply lock and unlock to get a new Kerberos ticket. Start a network capture using Wireshark. Attempt access to the share in question and let it fail and note down the username.

8. Run the following command:

# adinfo -t

9. Turn off debug on Centrify-enabled Samba server:

# /usr/share/centrifydc/bin/addebug off 

10. Send in the following by email or ftp:

a. /var/centrify/tmp/adinfo_support.tar.gz
b. tar of /var/log/samba/ 
c. /etc/samba/smb.conf 
d. /tmp/adquery.txt
e. network trace from Windows. Save it with an extension of pcap. 

11. Revert changes

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