Problem
You or your monitoring system notice a couple of so-called “zombie-processes” in the process list of your UCS domain controller.
root@dc:~# ps aux | grep Z
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 9383 0.0 0.0 0 0 ? Z 12:45 0:00 [xmlsec1] <defunct>
root 9384 0.0 0.0 0 0 ? Z 12:45 0:00 [xmlsec1] <defunct>
root 19222 0.0 0.0 12784 976 pts/0 S+ 14:14 0:00 grep Z
Environment
Affected are UCS 4.x hosts with SSO configured. Zombie processes arise when a parent process ends and did not ask his child for the data it requested initially.
Solution
You can safely ignore these processes. They will be cleaned up by the library at a later stage.
With a new release of UCS there might be an update to this issue.