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KB-6834: Additional configuration steps for deploying Adbindproxy on RHEL 7

23 February,18 at 04:17 PM

Question:
Are there any special considerations or additional steps needed to configure Centrify Adbinproxy on a RHEL 7 system?

Answer:
An issue was recently identified on Red Hat 7 systems which could affect the integration of Centrify Adbindproxy with stock Samba. As a result, in addition to the steps in the Samba integration guide, please do the following to complete the setup:

1) cd /etc/centrifydc/scripts/
2) vi functions.cdc
3) Comment out the following 2 lines:

LD_LIBRARY_PATH=/usr/share/centrifydc/lib64: /usr/share/centrifydc/kerberos/lib64: $LD_LIBRARY_PATH
export LD_LIBRARY_PATH

4) Run adbindproxy.pl.
5) By default, /sbin/adkeytab is a symbolic link to /usr/share/centrifydc/bin/cdcexec​, and this needs to be changed. 

# ls -l /sbin/adkeytab
lrwxrwxrwx. 1 root root 33 May  2 15:19 /sbin/adkeytab -> /usr/share/centrifydc/bin/cdcexec
# rm /sbin/adkeytab
# ln -s /usr/share/centrifydc/libexec/adkeytab /sbin/adkeytab
# ls -l /sbin/adkeytab
lrwxrwxrwx. 1 root root 38 May  4 08:50 /sbin/adkeytab -> /usr/share/centrifydc/libexec/adkeytab

6) Run 'net cache flush'
7) Verify it is working: 

# systemctl status centrifydc-samba.service 

RedHat 7 has SELinux and Firewall enabled by default. If issues are present after completing the above steps, please run the following:

1) net rpc getsid - This will fail if the firewall is enabled and should be disabled.
2) net getdomainsid - You should get 2 lines back. If not, or if it fails, please verify the 2 lines in the functions.cdc file are commented out and run adbindproxy.pl again.

Note:
For more information on how to deploy Centrify Adbindproxy, please see the Samba Integration Guide that is included with the Adbindproxy file download.

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