The document provides an overview of Puppet, a configuration management system that automates IT infrastructure management by enforcing desired states across nodes using agents and a master server. It also introduces Hiera, a tool for managing data separate from code, and MCollective, a framework for server orchestration. A training course is suggested for individuals interested in mastering Puppet, targeting DevOps professionals and system administrators.

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Introduction to

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What is Puppet?
Puppet is a configuration management system
that allows you to define the state of your IT
infrastructure, then automatically enforces the
correct state. Whether you're managing just a
few servers or thousands of physical and virtual
machines, Puppet automates tasks that
sysadmins often do manually, freeing up time
and mental space so sysadmins can work on the
projects that deliver greater business value.

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How Puppet works?
Once you install Puppet, every node (physical server, device or
virtual machine) in your infrastructure has a Puppet agent installed
on it. You'll also have a server designated as the Puppet master.
Enforcement takes place during regular Puppet runs, which follow
these steps:
• Fact collection. The Puppet agent on each node sends facts
about the node's configuration — detailing the hardware,
operating system, package versions and other information — to
the Puppet master.
• Catalog compilation. The Puppet master uses facts provided by
the agents to compile detailed data about how each node
should be configured — called the catalog — and sends it back
to the Puppet agent.

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How Puppet works (cont.)?
• Enforcement. The agent makes any needed changes to
enforce the node's desired state. Note: If you choose to run in
no-op (simulation) mode, the agent will simply simulate the
changes.
• Report. Each Puppet agent sends a report back to the Puppet
master, indicating any changes that have been made to its
node's configuration. (In no-op mode, reports indicate which
nodes are out of compliance.)
• Report sharing. Puppet's open API can send data to third-
party tools, so you can share infrastructure information with
other teams.

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Puppet Modules
• Modules are self-contained bundles of code and
data. You can write your own modules or you can
download pre-built modules from the Puppet Forge.
• Nearly all Puppet manifests belong in modules. The
sole exception is the main site.pp manifest, which
contains site-wide and node-specific code.

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What is Hiera?
• Hiera is nothing, but a key value look up tool, which
can be ordered and organized nicely without
meddling with the actual code. Just give hiera the
data that your modules need, and you are ready to
go.
• Hiera makes your data separate from the module's,
so that the module code remains untouched. This
helps your module's to be reusable and clean, and
save you from repetition.

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Introduction to MCollective
• The Marionette Collective AKA MCollective is a
framework to build server orchestration or parallel
job execution systems.
• MCollective use modern tools like Publish Subscribe
Middleware and modern philosophies like real time
discovery of network resources using meta data and
not hostnames. Delivering a very scalable and very
fast parallel execution environment.

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What is MCollective and
what does it allow you to do?
• Interact with small to very large clusters of servers.
• Comes with simple to use command line tools to call remote
agents.
• Ability to write custom reports about your infrastructure.
• A number of agents to manage packages, services and other
common components are available from the community.
• Allows you to write simple RPC style agents, clients and Web
UIs in an easy to understand language - Ruby
• Extremely pluggable and adaptable to local needs

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How you can master Puppet?
Become an expert in 2 days.
World class Puppet corporate training by the industry
experts.
More Details

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Suggested Audience & Other Details
• Suggested Audience - This course is targeted for the budding
devops professionals, experienced System administrators and
enthusiasts alike who are already using puppet, or intend to
use it to automate configuration management, system
integration and manage scalable infrastructures with ease.
• Duration – 2 Days
• Prerequisites
– Basic understanding of linux/unix system concepts
– Familiarity with Command Line Interface (CLI)
– Familiarity with a Text Editor
Syllabus

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For further info/assistance contact
training@springpeople.com
+91 80 656 79700
www.springpeople.com
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