Collaboration Summit 2015

Docker offers an exciting new way to use containers for delivering and managing applications. Combining Docker with a configuration management system like Puppet provides much greater control over containers, both at buildtime and at runtime: at buildtime, Puppet's fine-grained resources such as file, cron, and user make it easy to control an image build in great detail; Puppet's facilities for weaving the description of a system together from different concerns make it easy to express similarities and differences between a fleet of container images concisely and understandably. At runtime, Puppet can be used to detect configuration drift and remediate such drift. When image building and deployment is performed by different parties, Puppet manifests also document the details of a container's setup and expose the knobs that can be used to control the payload of a container.