Puppet is a framework used in automation and simplification of systems administration.
Puppet follows client server architecture, with the client known as agent and server known as the master.
Define: User infrastructure is defined by reusable models in a desired state.
Simulate: The deployments are simulated, and test change is possible without any disruption of the infrastructure.
Enforce: To ensure compliance in system, the desired state is automatically enforced.
Modes of Operation:
Masterless Puppet Apply – The puppet code is executed directly on the server system without the requirement of any client-server infrastructure.
Master Puppet Agent – The puppet client is installed and run on multiple masters.
Server-Client Interaction using PuppetFACTER – This tool is used to retrieve the system’s data.
MCOLLECTIVE – This is the infrastructure orchestration framework of puppet.
HIERA –The data in Puppet is placed here.
PUPPETDB – The data generated by puppet is stored in this tool.
PUPPET DASHBOARD – This is an ENC (External Node Classifier) and is a front-end Web tool in the Puppet environment.
The Foreman – Third party tool that compliments Puppet ENC.
Geppetto – Eclipse based IDE for Puppet used for writing code.
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Virtual Box Installation
Base box import
Other setup related tasks
An Insight into Puppet Resources
Resource Abstraction Layer
Overview to modules
How to write an Nginx module
An overview of classes
Ordering of resources
The trifecta of resources- Package, File and Service
Introduction to Variables in Puppet
Introduction to Facts in Puppet
If else statements in Puppet
Cases in Puppet
Selectors in Puppet
Some more conditional and logic statements
Static Contents Explosion in Puppet
Usage of dynamic content with templates
Overview of templates
Techniques of code compression
Introduction to Arrays
The defined types in Puppet
More about Puppet Master/Agent
Introduction to Master/Agent Model
Installation of required software
How to configure the master
Overview of Hiera
How to separate data from code using hierarchical key value lookup
How to install and configure Hiera
How to use Hiera inside manifests
Overview of M-collective
A basic walkthrough of M-collective
A puppet software developer is one of the most trending jobs in the current world thanks to the boost provided by cloud computing. Some of the job titles that can be taken are- System Administrator Cloud Architect.. This clearly shows that Puppet is here to stay for a considerable period of time and there shouldn't be any worries for a professional pursuing it as a career.
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