Installation and configuration
PuppetDB is an Open Source Closure application complementary to Puppet. It does exactly what the name suggests: it stores Puppet data:
All the facts of the managed nodes
A copy of the catalog compiled by the Master and sent to each node
The reports of the subsequent Puppet runs, with all the events that have occurred
What is stored can be queried, and for this PuppetDB exposes a REST-like API that allows access to all its data.
Out of the box, it can act as an alternative to two functions previously done using the Active Records libraries:
The backend for stored configs, where we can store our exported resources
A replacement for the inventory service (an API we can use to query the facts of all the managed nodes)
While read operations are based on a REST-like API, data is written by commands sent by the Puppet Master and queued asynchronously by PuppetDB to a pool of internal workers that deliver data to the persistence layer, based either on the embedded HSQLDB ...
