Puppet : Initiation + Advanced

Goals

- Understand the interest of the DevOps movement

- Install Puppet

- Write manifests to deploy an infrastructure with Puppet

- Master good practices and ensure the consistency of the IS with Puppet

Program

DevOps Introduction

The origin of the DevOps movement
The need for industrialization for operations Overview of
tools
Positioning of Puppet in the current landscape
Presentation of git

Puppet overview

How the catalog works, overall
architecture The stand-alone
architecture with Puppet apply The agent / master architecture (agent / master)
Security implications
Installation, presentation of the configuration directories

Practical workshop: installation of the Puppet master, creation of a trivial catalog

Language discovery

Resources in Puppet
The resource abstraction layer (RAL): types, attributes, values Idempotence
manifests
, desired states
Resource
scheduling Variables, facts (with Facter) and conditions
Classes and modules
Parameterized classes
Types defined, or « super-classes »

Practical workshop: writing manifestos involving basic resources, creating classes, discovering modules

Puppet in infrastructure

Organization of the manifesto: feedback on classes and modules
Definition of models (ERB templates) for files
Use of the file server integrated into Puppet
Best practices and patterns for classes and modules
Classification of nodes, use of the node block and includes

Practical workshop: setting up custom modules, configuring the server, configuring complete heterogeneous nodes via Puppet

Using Facter

Reminder of the use of Puppet facts
Creation of facts with simple and complex resolutions
Good practices on the structuring of Puppet facts

Practical workshop: definition of personalized Facts, exploitation in a realistic scenario

More advanced programming with Puppet

Writing reusable code with Puppet
The forge and the puppetlabs modules
A bit of Ruby for templates
Understanding classification and hierarchies
How Hiera works
Using hierarchies, introduction to ENCs
Setting up an ENC

Practical workshop: writing complex manifests, discovering the modules of the Puppet forge, setting up a life-size scenario with Hiera

Advanced production setup

Details of the configuration in production mode
Managing SSL certificates with Puppet
Optimizing resources with PuppetDB
Using virtual types, creating resources
Collector of exported resources

Practical workshop: apache2 + passenger configuration, certificate management, setting up PuppetDB

Duration

5 days

Price

£ 2599

Audience

System administrators

Prerequisites

Have followed the Linux training: system administration (databases + services), or have equivalent knowledge

Reference

DEV866-F

Sessions

Very very rich for 3 days ... Not using the product (or not for a certain time) the answer to my professional needs is difficult to estimate. Trainer: Very strong.

Sometimes a little quick: exercises and at the same time explanations. Trainer: knows his subject.

A little speedy course I would have liked to see some diagrams on the board, especially for the classes. Trainer: Friendly and competent. Thank you for the training, we will try to improve our current puppet installation.

The course material is a little light but the whole is of high quality. Sequence and tests to be slightly revised to avoid wasting time on the debug but the content is of a very high level and the pace is high, which compensates.

The training is fairly recent which may explain a slight lack of maturity. Good general impression. We could surely have gone a little faster ... Trainer: Gilles has a very interesting human relationship which provides good working conditions. Good training: the contract between what is presented and what we have done is fulfilled. Correct atmosphere. Correct level.