I\'m using Eclipse Luna with Tomcat 8 and am confused by the different locations of config files.
I\'ve installed Tomcat on my local machine and configured Tomcat in Ecl
Configuration files are stored in your workspace under a dedicated project (c).
Original path catalina home (a) is the path where Tomcat libraries are. Configuration is not being read from there... this allows a different configuration for the Tomcat when it is being run by Eclipse.
Catalina base (b) is a base path for work folders (temp and work) and also for deployed applications.
And the path for deployed applications (d) is just a name of the directory within catalina base where your applications are being deployed.
where do I configure my server for a specific application that I start from within Eclipse during development?
You don't configure it in any file, but rather within Eclipse. Your application needs to be configured as a Dynamic Web Project to enable server deployment.