Getting Started with Terraform - Second Edition电子书

Title Page

Getting Started with Terraform

Second Edition

Copyright

Getting Started with Terraform

Second Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

Why subscribe?

Customer Feedback

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

Downloading the color images of this book

Errata

Piracy

Questions

Infrastructure Automation

What is Infrastructure as Code and why is it needed?

Declarative versus procedural tools for Infrastructure as Code

Infrastructure as Code in the Cloud

Requirements for infrastructure provisioner

Supports a wide variety of services

Idempotency

Dependency resolution

Robust integration with existing tools

Platform agnosticism

Smart update management

Ease of extension

Which tools exist for infrastructure provisioning?

Scripting

Configuration management

CloudFormation/Heat

Terraform

A short overview of Terraform

Journey ahead and how to read this book

Summary

Deploying First Server

History of Terraform

Preparing work environment

The many Terraform providers

Short introduction to AWS

Using Elastic Compute Cloud

Creating an instance through the Management Console

Creating an instance with AWS CLI

Configuring AWS provider

Static credentials

Environment variables

Credentials file

Creating an EC2 instance with Terraform

Working with state

Handling resource updates

Destroying everything we've built

Summary

Resource Dependencies and Modules

Creating an AWS Virtual Private Cloud

Understanding dependency graph

Playing with Terraform graphs

Controlling dependencies with depends_on and ignore_changes

Making sense of our template

Removing duplication with modules

Configuring modules

Retrieving module data with outputs

Using root module outputs

Summary

Storing and Supplying Configuration

Understanding variables

Using map variables

Using list variables

Supplying variables inline

Using Terraform environment variables

Using variable files

Configuring data sources

Providing configuration with template_file

Providing data from anywhere with external_data

Exploring Terraform configuration resources

Taking a quick look at Consul

Summary

Connecting with Other Tools

Returning data with outputs

Testing servers with Inspec

Provisioners

Provisioning with local-exec and Ansible

Provisioning with Chef

Provisioning with remote-exec and Puppet

Uploading files with a file provisioner

Reprovisioning machines with null_resource

Using third-party plugins

Summary

Scaling and Updating Infrastructure

Counting servers

Bringing in high availability

Load balancing and simulating conditionals

Immutable infrastructure

Baking images with Packer

Rolling out AMI upgrades with Terraform

Performing blue-green deployments

Refreshing infrastructure

Importing resources

Summary

Collaborative Infrastructure

Version control with Git 101

Moving templates to Git

Protecting secrets in a Git repository

Storing state files remotely

Connecting remote states together

Storing modules remotely

Locking state files with Terragrunt

Moving infrastructure updates to the CI pipeline

Integration testing of Terraform modules

Summary

Future of Terraform

Infrastructure as code and Terraform replacements

Learning AWS and compiling Terraform

Learning Consul

Provisioning and configuration management

Immutable infrastructure

Collaboration and CI/CD

The many tools around Terraform

The rapid development of Terraform

Closing thoughts on the future of Terraform

Summary