My Filr installation is being shutdown seemingly by a valid shutdown command. In trying to find out why, I found the logs had times that didn't match. It turned out the timezone used for tomcat is GMT. Here is what I did to put it to my timezone so my logs all match.

In the /opt/novell/filr/apache-tomcat/bin/ file you will find the following line.

JAVA_OPTS="$JAVA_OPTS -Xms256m -Xmx8g -Xss2m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 -Duser.timezone=GMT"

Changing to

JAVA_OPTS="$JAVA_OPTS -Xms256m -Xmx8g -Xss2m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 -Duser.timezone=Australia/Brisbane"

and restarting filr is now giving me correct times in my logs. (You can insert your own timezone as relevant)
Still trying to sort why filr is being shutdown, but that's another story.