||It has been suggested that this article be merged into Puppet Labs. (Discuss) Proposed since January 2013.|
|Stable release||3.2.1 (May 22, 2013[±])|
|Preview release||3.2.1-rc1 (May 17, 2013[±])|
|Operating system||GNU/Linux, Unix-like, Windows|
|License||Apache for >2.7.0; GPL for prior versions.|
Puppet is an open source configuration management tool from Puppet Labs, founded by Luke Kanies in 2005. It is written in Ruby and released as free software under the GPL until version 2.7.0 and the Apache 2.0 license after that.
Puppet is a tool designed to manage the configuration of Unix-like and Microsoft Windows systems declaratively. The user describes system resources and their state, either using Puppet's declarative language or a Ruby DSL (domain-specific language). This information is stored in files called "Puppet manifests". Puppet discovers the system information via a utility called Facter, and compiles the Puppet manifests into a system-specific catalog containing resources and resource dependency, which are applied against the target systems. Any actions taken by Puppet are then reported.
Puppet language 
Puppet consists of a custom declarative language to describe system configuration, which can be either applied directly on the system, or compiled into a catalog and distributed to the target system via client–server paradigm (using a REST API), and the agent uses system specific providers to enforce the resource specified in the manifests. The resource abstraction layer enables administrators to describe the configuration in high-level terms, such as users, services and packages without the need to specify OS specific commands (such as rpm, yum, apt).
Platform support 
Built to be cross-platform, it works on Linux distributions, including CentOS, Debian, Fedora, Mandriva, Oracle Linux, RHEL, Scientific Linux, SUSE and Ubuntu, as well as multiple Unix systems (Solaris, BSD, Mac OS X, AIX, HP-UX), and has Microsoft Windows support.
Puppet is used by Wikimedia Foundation, ARIN, Reddit, Dell, Rackspace, Zynga, Twitter, New York Stock Exchange, Disney, Citrix Systems, Oracle, The University of North Texas, Los Alamos National Laboratory, Stanford University, and Google, among others.
See also 
- "Puppet Frequently Asked Questions". Puppet Labs. Retrieved March 10, 2010.
- System Requirements
- Supported Platforms
- Deploying Tomcat Applications With Puppet
- Google, VMware, Cisco stuff Puppet with $8.5M
- Puppet Project Home
- Official Puppet Labs YouTube Channel
- Puppet Tutorial
- Pulling Strings with Puppet: Configuration Management Made Easy (ISBN 978-1590599780)
- Pro Puppet (ISBN 978-1430230576)