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Puppet 3 Beginner’s Guide电子书

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52人正在读 | 0人评论 9.8

作       者:John Arundel

出  版  社:Packt Publishing

出版时间:2013-04-17

字       数:112.5万

所属分类: 进口书 > 外文原版书 > 电脑/网络

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Presented in an easy-to-follow, step-by-step tutorial format, Puppet 3 Beginner’s Guide will lead you through the basics of setting up your Puppet server with plenty of screenshots and real-world solutions. This book is written for system administrators and developers, and anyone else who needs to manage computer systems. You will need to be able to edit text files and run a few commands on the command line, but otherwise no system administration or programming experience is required.
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Puppet 3 Beginner's Guide

Table of Contents

Puppet 3 Beginner's Guide

Credits

About the Author

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

Time for action – heading

What just happened?

Pop quiz – heading

Have a go hero – heading

Reader feedback

Customer support

Errata

Piracy

Questions

1. Introduction to Puppet

The problem

Configuration management

A day in the life of a sysadmin

Keeping the configuration synchronized

Repeating changes across many servers

Self-updating documentation

Coping with different platforms

Version control and history

Solving the problem

Reinventing the wheel

A waste of effort

Transferable skills

Configuration management tools

Infrastructure as code

Dawn of the devop

Job satisfaction

The Puppet advantage

Welcome aboard

The Puppet way

Growing your network

Cloud scaling

What is Puppet?

The Puppet language

Resources and attributes

Summary

Configuration management

What Puppet does

The Puppet advantage

Scaling

The Puppet language

2. First steps with Puppet

What you'll need

Time for action – preparing for Puppet

Time for action – installing Puppet

Your first manifest

How it works

Applying the manifest

What just happened?

Modifying existing files

Exercise

Organizing your manifests

Time for action – creating a directory structure

Creating a nodes.pp file

Time for action – creating a node declaration

What just happened?

Summary

Installing Puppet

Manifests

Nodes

3. Packages, Files, and Services

Packages

Time for action – installing Nginx

What just happened?

More about packages

Installing specific versions

Removing packages

Updating packages

Modules

Time for action – creating an Nginx module

What just happened?

Time for action – making a "puppet apply" command

Services

Time for action – adding the Nginx service

What just happened?

Requiring resources

More about services

Starting a service at boot time

Services that don't support "status"

Specifying how to start, stop, or restart a service

Files

Time for action – deploying a virtual host

What just happened?

Notifying other resources

The package–file–service pattern

Exercise

Summary

Packages

Modules

Services

Starting services at boot

Service status options

Service control commands

Resource dependencies

Files

4. Managing Puppet with Git

What is version control?

Time for action – importing your manifests into Git

What just happened?

Time for action – committing and inspecting changes

What just happened?

How often should I commit?

Branching

Distributing Puppet manifests

Reliability

Scalability

Simplicity

Time for action – creating a master Git repo

Time for action – cloning the repo to a new machine

Time for action – adding a new node

Time for action – pushing changes to the master repo

Exercise

Pulling changes automatically

Time for action – automatic pull-and-apply script

What just happened?

Learning more about Git

Summary

Why version control?

Getting started with Git

Networking Puppet

5. Managing users

Users

Security and access control

What Puppet can do

Time for action – creating a user

What just happened?

Removing user accounts

Access control

What is SSH?

Managing SSH keys

Time for action – adding an SSH authorized key

What just happened?

Generating new SSH keys

Special-purpose keys

Locking user accounts

Managing SSH configuration

Time for action – deploying an SSH configuration file

User privileges

sudo

Time for action – deploying a sudoers file

What just happened?

Summary

Security practices

User resources

Removing or locking accounts

Managing SSH keys

Configuring SSH

Managing privileges with sudo

6. Tasks and templates

Running commands with exec resources

Time for action – running an arbitrary command

What just happened?

Running commands selectively

Triggering commands

Chaining commands

Command search paths

Scheduled tasks

Time for action – scheduling a backup

What just happened?

More scheduling options

Running jobs at regular intervals

Running a job as a specified user

Exercise

Distributing files

Time for action – using a recursive file resource

What just happened?

Using templates

Time for action – templating an Nginx virtual host

What just happened?

Inline templates

System facts

Doing the math

Putting it all together

Summary

Exec resources

Scheduled jobs

Recursive file resources

Templates

7. Definitions and Classes

Grouping resources into arrays

Definitions

Passing parameters to definitions

Optional parameters

Time for action – creating a definition for Nginx websites

What just happened?

Multiple instances of definitions

Exercise

Classes

Defining classes

Putting classes inside modules

Declaring classes

What's the difference between a class and a definition?

Time for action – creating an NTP class

What just happened?

Summary

Arrays

Definitions

Classes

8. Expressions and Logic

Conditionals

If statements

else and elsif

Unless statements

Case statements

The default case

Matching multiple cases

Selectors

Expressions

Comparisons

Equality

Magnitude

Substrings

Boolean operators

Combining Boolean operators

Arithmetic operators

Regular expressions

Operators

Syntax

Conditionals

Capture variables

Substitutions

Node definitions

Arrays and hashes

Grouping resources with arrays

Getting values out of arrays

Hashes

Multilevel hashes

Testing hash keys

Summary

Conditionals

Operators

Regular expressions

Text substitution

Arrays

Hashes

9. Reporting and troubleshooting

Reporting

Summary reports

Enabling reports

What's in a report?

Time for action – generating a report

What just happened?

Using reports

Debug runs

Noop runs

Syntax checking

Debug output

Notify resources

Exec output

Specifying expected exit status

Monitoring

Managing monitoring with Puppet

What to monitor

Monitoring Puppet status

Problems with Puppet

Staying in sync

Errors

Compilation errors

Diagnosing errors

Missing file sources

Missing parent directory

Mistyped command line options

Summary

Reporting

Debug and dry-run modes

Printing messages

Monitoring Puppet

Common Puppet errors

10. Moving on Up

Puppet style

Break out code into modules

Refactor common code into definitions

Keep node declarations simple

Use puppet-lint

Make comments superfluous

Puppet learning resources

Reference

Resource types

Language and syntax

Facts

Style

Modules and code

Puppet Forge

The Puppet Cookbook

Projects

Puppet everywhere

User accounts

System toolbox

Time sync

Monitoring server

Puppetize your key services

Automate backups

Set up staging servers

Automate everything

Last word

Index

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