Problem
Based on this article you identified the server causing a high CPU load on the master.
Investigation
Check if ldap-group-to-file.py is running at least once.
Note: Starting with UCS 4.4 e191 it will run only once.
root@ucs:~# ps ax | grep ldap-group-to
14217 pts/0 S+ 0:00 grep ldap-group-to
32435 ? Ss 0:08 ldap-group-to-file.py
32123 ? Ss 0:08 ldap-group-to-file.py
23456 ? Ss 0:08 ldap-group-to-file.py
32450 ? Ss 0:08 ldap-group-to-file.py
Solution
Improve runtime and start time of this script based on this article.