I have tomcat running on an ubuntu instance on aws and I can successfully get to the If you\'re seeing this, you\'ve successfully installed Tomcat. Congratulations!
You need to create a context for the Manager App and allow access from Tomcat 8.5.x
Under your $CATALINA_BASE/conf/Catalina/localhost/
home create a file manager.xml
manager.xml content, note my source is 172.31.254.37 (my computer), change this to your source :
Make sure your User/Roles are defined in $CATALINA_BASE/conf/tomcat-users.xml
Kind Regards,
Jacques de Jager