Learning SaltStack电子书

Learning SaltStack

Table of Contents

Learning SaltStack

Credits

About the Author

About the Reviewers

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. Diving In – Our First Salt Commands

Introducing Salt

Installing Salt

Installation with system packages (Ubuntu)

Installing with Salt-Bootstrap

Configuring Salt

Firewall configuration

Salt minion configuration

Starting the Salt master and Salt minion

Accepting the minion key on the master

A game of ping pong

Masterless Salt

Summary

2. Controlling Your Minions with Remote Execution

The structure of a remote execution command

Command-line options

Targeting strings

Glob matching

Perl-compatible regular expression matching

List matching

Grain and pillar matching

Grains

Pillars

Compound matching

Remote execution modules and functions

Adding users

Installing packages

Managing services

Monitoring minion states

Running arbitrary commands

Summary

3. Execution Modules – Write Your Own Solution

Exploring the source

Cross-calling execution modules

Grains and the __virtual__ function

The__opts__ and __pillar__ functions

Reformatting return data

An advanced example

Summary

4. Defining the State of Your Infrastructure

Our first state

The pieces of a state declaration

Expanding to encompass multiple pieces of state

Dependencies using requisites

The require requisite

The watch requisite

Other requisites

The _in requisites

Summary

5. Expanding Our States with Jinja2 and Pillar

Adding a new minion

Jinja2

apache2 or httpd?

Defining secure minion-specific data in pillar

Using pillar data in states

Summary

6. The Highstate and Environments

The highstate

Environments

Environments in pillar

Expanding our base environment

Storing our states in Git with GitFS

Summary

7. Using Salt Cloud to Manage Virtual Minions

Setting up Salt Cloud

Setting up Linode

Creating an API key

Creating a cloud provider configuration

Creating cloud VM profiles

Create and destroy machines

Managing groups of VMs with map files

Creating new masters with map files

Summary

8. The Reactor and the Event System

The Salt event system

Listening for events

Event structure

Firing events from Salt

Firing events from custom code

Reacting to events

Summary

Index