Puppet Cookbook - Third Edition电子书

Puppet Cookbook Third Edition

Table of Contents

Puppet Cookbook Third Edition

Credits

About the Authors

About the Reviewers

www.PacktPub.com

Support files, eBooks, discount offers, and more

Why Subscribe?

Free Access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Puppet Language and Style

Introduction

Adding a resource to a node

How to do it...

How it works...

Using Facter to describe a node

How to do it...

How it works...

There's more...

Variables

Scope

Installing a package before starting a service

How to do it...

How it works...

Capitalization

Learning metaparameters and ordering

Trifecta

Idempotency

Installing, configuring, and starting a service

How to do it...

How it works…

Using community Puppet style

How to do it…

Indentation

Quoting

False

Variables

Parameters

Symlinks

Creating a manifest

How to do it...

There's more…

Checking your manifests with Puppet-lint

Getting ready

How to do it...

There's more...

See also

Using modules

How to do it…

How it works…

There's more…

Templates

Facts, functions, types, and providers

Third-party modules

Module organization

See also

Using standard naming conventions

How to do it…

There's more…

Using inline templates

How to do it…

How it works…

There's more...

See also

Iterating over multiple items

How to do it…

How it works…

There's more…

Using hashes

Creating arrays with the split function

Writing powerful conditional statements

How to do it…

How it works…

There's more…

Elseif branches

Comparisons

Combining expressions

See also

Using regular expressions in if statements

How to do it…

How it works…

There's more…

Capturing patterns

Regular expression syntax

See also

Using selectors and case statements

How to do it…

How it works…

Selector

Case statement

There's more…

Regular expressions

Defaults

Using the in operator

How to do it…

There's more…

Using regular expression substitutions

How to do it…

How it works…

There's more…

See also

Using the future parser

Getting ready

How to do it...

Appending to and concatenating arrays

Lambda functions

Reduce

Filter

Map

Slice

Each

Other features

2. Puppet Infrastructure

Introduction

Installing Puppet

Getting ready

How to do it...

Managing your manifests with Git

Getting ready

How to do it...

How it works...

There's more...

Creating a decentralized Puppet architecture

Getting ready

How to do it...

How it works...

Writing a papply script

How to do it...

How it works...

Running Puppet from cron

Getting ready

How to do it...

How it works...

There's more...

Bootstrapping Puppet with bash

Getting ready

How to do it...

How it works...

There's more...

Creating a centralized Puppet infrastructure

Getting ready

How to do it...

How it works...

There's more...

Creating certificates with multiple DNS names

Getting ready

How to do it...

How it works...

Running Puppet from passenger

Getting ready

How to do it...

How it works...

There's more...

Setting up the environment

Getting ready

How to do it...

There's more...

Configuring PuppetDB

Getting ready

How to do it...

How it works...

There's more...

Configuring Hiera

Getting ready

How to do it...

How it works...

There's more...

Setting node-specific data with Hiera

Getting ready

How to do it...

How it works...

Storing secret data with hiera-gpg

Getting ready

How to do it...

How it works...

There's more...

See also

Using MessagePack serialization

Getting ready

How to do it...

How it works...

Automatic syntax checking with Git hooks

How to do it...

How it works...

Pushing code around with Git

Getting ready

How to do it...

How it works...

Managing Environments with Git

Getting ready

How to do it...

How it works...

There's more...

3. Writing Better Manifests

Introduction

Using arrays of resources

How to do it…

How it works…

See also

Using resource defaults

How to do it...

How it works...

There's more...

Using defined types

How to do it…

How it works…

There's more…

See also

Using tags

How to do it...

There's more…

Using run stages

How to do it…

How it works…

There's more…

See also

Using roles and profiles

How to do it…

How it works…

There's more…

Passing parameters to classes

How to do it…

How it works…

There's more…

Specifying default values

Passing parameters from Hiera

Getting ready

How to do it...

How it works...

There's more...

Writing reusable, cross-platform manifests

How to do it…

How it works...

There's more…

See also

Getting information about the environment

How to do it…

How it works…

There's more…

See also

Importing dynamic information

Getting ready

How to do it…

How it works…

There's more…

See also

Passing arguments to shell commands

How to do it…

How it works…

4. Working with Files and Packages

Introduction

Making quick edits to config files

Getting ready

How to do it...

How it works…

There's more…

Editing INI style files with puppetlabs-inifile

Getting ready

How to do it...

How it works...

There's more...

Using Augeas to reliably edit config files

How to do it…

How it works…

There's more…

Building config files using snippets

Getting ready

How to do it...

How it works...

Using ERB templates

How to do it…

How it works…

There's more…

See also

Using array iteration in templates

How to do it…

How it works…

There's more…

See also

Using EPP templates

How to do it...

How it works...

There's more...

Using GnuPG to encrypt secrets

Getting ready

How to do it...

How it works...

There's more...

See also

Installing packages from a third-party repository

How to do it…

How it works…

There's more...

Comparing package versions

How to do it…

How it works…

5. Users and Virtual Resources

Introduction

Using virtual resources

How to do it...

How it works...

There's more...

Managing users with virtual resources

How to do it...

How it works...

There's more...

See also

Managing users' SSH access

How to do it...

How it works...

There's more...

Managing users' customization files

How to do it...

How it works...

There's more...

See also

Using exported resources

Getting ready

How to do it...

How it works...

There's more...

6. Managing Resources and Files

Introduction

Distributing cron jobs efficiently

How to do it...

How it works...

There's more...

See also

Scheduling when resources are applied

How to do it...

How it works...

There's more...

Using host resources

How to do it...

How it works...

There's more...

Using exported host resources

Getting ready

How to do it...

How it works...

There's more...

Using multiple file sources

How to do it...

How it works...

There's more...

See also

Distributing and merging directory trees

How to do it...

How it works...

There's more...

Cleaning up old files

How to do it...

How it works...

There's more...

Auditing resources

How to do it...

How it works...

There's more...

See also

Temporarily disabling resources

How to do it...

How it works...

7. Managing Applications

Introduction

Using public modules

How to do it...

How it works...

There's more...

Managing Apache servers

How to do it...

How it works...

Creating Apache virtual hosts

How to do it...

How it works...

There's more...

Creating nginx virtual hosts

How to do it...

How it works...

There's more...

Managing MySQL

How to do it...

How it works...

There's more...

Creating databases and users

How to do it...

How it works...

There's more...

8. Internode Coordination

Introduction

Managing firewalls with iptables

Getting ready

How to do it...

How it works...

There's more...

Building high-availability services using Heartbeat

Getting ready

How to do it…

How it works…

There's more...

Managing NFS servers and file shares

How to do it...

How it works…

Using HAProxy to load-balance multiple web servers

How to do it…

How it works…

There's more...

Managing Docker with Puppet

Getting ready

How to do it...

How it works...

There's more...

9. External Tools and the Puppet Ecosystem

Introduction

Creating custom facts

How to do it...

How it works...

There's more...

See also

Adding external facts

Getting ready

How to do it...

How it works...

There's more...

Debugging external facts

Using external facts in Puppet

See also

Setting facts as environment variables

How to do it...

Generating manifests with the Puppet resource command

How to do it...

There's more...

Generating manifests with other tools

Getting ready

How to do it...

There's more...

Using an external node classifier

Getting ready

How to do it...

How it works...

There's more...

See also

Creating your own resource types

How to do it...

How it works...

There's more...

Documentation

Validation

Creating your own providers

How to do it...

How it works...

There's more...

Creating custom functions

How to do it...

How it works...

There's more...

Testing your puppet manifests with rspec-puppet

Getting ready

How to do it...

How it works...

There's more...

See also

Using librarian-puppet

Getting ready

How to do it...

How it works...

There's more...

Using r10k

Getting ready

How to do it...

How it works...

There's more...

10. Monitoring, Reporting, and Troubleshooting

Introduction

Noop – the don't change anything option

How to do it...

How it works...

There's more...

See also

Logging command output

How to do it...

How it works...

There's more...

Logging debug messages

How to do it...

How it works...

There's more...

Printing out variable values

Resource ordering

Generating reports

How to do it...

How it works...

There's more...

Other report types

See also

Producing automatic HTML documentation

How to do it...

How it works...

There's more...

Drawing dependency graphs

Getting ready

How to do it...

How it works...

There's more...

See also

Understanding Puppet errors

How to do it...

See also

Inspecting configuration settings

How to do it...

How it works...

See also

Index