I am configuring Open Street Maps by following these steps: http://switch2osm.org/serving-tiles/building-a-tile-server-from-packages/
I am using the same packages, but for Debian, and the defaults give me the slippymap site example. The map loads from Mapnik option, but not from the Local option. Everything seems to be configured, except that I didn't added the boundaries and processed coastline data. The information I found about that seems ambiguous to me. Also I can't find rendered tiles in the mod_tile folder.
Any ideas how to check if Mapnik is installed and configured correctly and how to import the boundaries and coastlines data into Postgres?