You can have a look into this discussion answer regarding your query which might help you to proceed further. The referred discussion explained with the tomcat 6.0 logging documentation reference, as you are using tomcat 8.5 sharing the corresponding logging documentation over here.
Hope this might help you to proceed further.
Posted: 3 years ago
Posted: 11 Jan 2018 1:45 EST
Arun Kumar Mahanty (Arun_Mahanty)
Principal Technical Solutions Engineer