gistfile1.txt

puppet subsystems
=================ti

catalog contains instances of type objects

tagging resources, applying only tags


multi-tier applications
=======================

nodes are the primary paradigm
a challenge is to define the application

codify the application in a class

barrier anchor

an arbitrary, descriptive pattern; ordering

parameters to application class; not only nodes

app class specifies params, subclasses inherit

openstack modules serve as an example of this pattern