Problem:
UCS Cron notifications for /usr/lib/univention-pam/ldap-group-to-file.py
Abort: Process is locked, another instance is already running.
Solution:
Caused by lots of useres and groups in the environment, the script ldap-group-to-file.py takes more than 15 minutes to fullfil, and the next cronjob starts. In order to avoid complications, we implemented a lock, so there is just this one job.
What the script does and what it is for is described here:
http://docs.software-univention.de/manual-4.4.html#groups::cache
To optimize the performance we have this paragraph in the performance guide,
http://docs.software-univention.de/performance-guide-4.4.html#group:cache
and the following article with some good suggestions for the performance.