How to print tomcat console all logs in to catalina_yyyy_mm_dd for datahub?Right now its printing upto server startup

I followed the link https://help.hybris.com/6.5.0/hcd/0777fe7109714ff9a9f033d9a01cbe8a.html and downloaded the logback.xml and placed inside ..\apache-tomcat-7.0.65\webapps\datahub-webapp\WEB-INF\classes. But its not working.Please suggest what configuration need to add in logback.xml