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Terraform in Action
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The best book about Terraform available at the moment.
By treating your infrastructure as a codeable application, you can instantaneously create and launch new components and respond efficiently to changes in demand and other use requirements. Terraform in Action introduces the Infrastructure-as-Code model using the amazing Terraform automation tool, teaching you how to design and manage servers that can be provisioned, shared, changed, tested, and deployed at the touch of a button. Unlock the full potential of Terraform to manage your infrastructure as easily as you manage your codebase.
Table of Contents takes you straight to the bookdetailed table of contents
Part 1: Learning the Ropes
Getting Started with Terraform
1.1 What makes Terraform so great?
1.1.1 Provisioning Tool
1.1.2 Easy to Use
1.1.3 Free and Open-Source Software
1.1.4 It’s Declarative!
1.1.5 Cloud Agnostic
1.1.6 Richly Expressive and Highly Extendable
1.2 Hello Terraform!
1.2.1 Writing the Terraform Configuration Files
1.2.2 Configuring the AWS Provider
1.2.3 Initializing Terraform
1.2.4 Deploying the EC2 Instance
1.2.5 Destroying the EC2 Instance
1.3 A Brave New Hello World!
1.3.1 Modifying the Terraform Configuration Files
1.3.2 Applying Changes
1.3.3 Destroying Infrastructure
1.4 Overview
1.5 Summary
Lifecycle of a Terraform Resource
2.1 Process Overview
2.2 Declaring a Local File Resource
2.3 Initializing the Workspace
2.4 Generating an Execution Plan
2.5 Creating the Local File Resource
2.6 Updating the Local File Resource
2.6.1 Detecting Configuration Drift
2.7 Deleting the Local File Resource
2.8 Summary
Functional Programming and Advanced Templating Techniques
3.1 First Attempt at Mad Libs
3.1.1 Making the Word Pool
3.1.2 Shuffling the Words
3.1.3 Using Template Data Sources
3.1.4 Outputting to a Local File
3.2 Improving Mad Libs with Expressions
3.2.1 Getting Fancy with For Expressions
3.2.2 Implicit Dependencies
3.2.3 Scaling Resources by Incrementing Count
3.2.4 A Better Way to Template
3.2.5 Compressing Files with an Archive Resource
3.2.6 Applying Changes
3.3 Overview
3.4 Summary
Deploying a Multi-Tiered Web Application in AWS
4.1 Motivation
4.2 Architecture Overview
4.3 Modules are Your Friend
4.3.1 Standard Module Structure
4.4 Root Module
4.5 Networking Module
4.6 Database Module
4.6.1 Passing Data from the Networking Module
4.6.2 Generating a Random Password
4.7 Autoscaling Module
4.7.1 Trickling Down Data
4.7.2 Detailed Module Planning
4.7.3 Getting Real with Template Files
4.7.4 Final Touches
4.8 Deploying the Webapp
4.9 Overview
4.10 Summary
Part 2: Terraform in the Wild
Serverless Made Easy
5.1 The "Two Penny Website"
5.2 Architecture and Planning
5.2.1 Sorting by Group, then by Size
5.2.2 Problem Solving
5.3 Writing the Code
5.3.1 Resource Group
5.3.2 Storage Container
5.3.3 Storage Blob
5.3.4 Function App
5.3.5 Final Touches
5.4 Deploying to Azure
5.5 Combining Azure Resource Manager (ARM) with Terraform
5.5.1 Deploying Unsupported Resources
5.5.2 Migrating from Legacy Code with the Strangler Façade Pattern
5.5.3 Generating Configuration Code
5.6 Summary
Terraform with Friends
6.1 Standard and Enhanced Backends
6.2 Developing an S3 Backend Module
6.2.1 Architecture
6.2.2 Flat Module Structure
6.2.3 Writing the Code
6.3 Sharing Modules
6.3.1 GitHub
6.3.2 Terraform Module Registry
6.4 Everyone Gets an S3 Backend!
6.4.1 Deploying the S3 Backend
6.4.2 Storing State in the S3 Backend
6.5 Reusing Configuration Code with Workspaces
6.5.1 Deploying Multiple Environments with Workspaces
6.5.2 Clean up
6.6 Introducing Terraform Cloud
6.6.1 Getting Started with Terraform Cloud (Optional)
6.7 Overview
6.8 Summary
CICD Pipelines as Code
7.1 A Tale of Two Deployments
7.2 CI/CD for Docker Containers on GCP
7.2.1 Designing the Pipeline
7.2.2 Detailed Engineering
7.3 Initial Workspace Setup
7.3.1 Organizing the Directory Structure
7.3.2 Implicit vs Explicit Providers
7.4 Dynamic Configurations and Provisioners
7.4.1 For-Each vs. Count
7.4.2 Executing Scripts with Provisioners
7.4.3 Dealing with Repeating Configuration Blocks
7.4.4 Dynamic Blocks: Rare Boys
7.5 Local-Exec Provisioners "The Golden Hammer"
7.5.1 Null Resource with a Local-Exec Provisioner
7.6 Community and Third-Party Providers
7.6.1 Installing the Shell Provider
7.7 Deploying Static Infrastructure
7.8 CI/CD of a Docker Container
7.9 Overview
7.10 Summary
A Multi-Cloud MMORPG
8.1 Hybrid Cloud Load Balancing
8.1.1 Architectural Overview
8.1.2 Code
8.1.3 Deploy
8.2 Deploying an MMORPG on a Federated Nomad Cluster
8.2.1 Cluster Federation 101
8.2.2 Architecture
8.2.3 Stage #1 Base Infrastructure
8.2.4 Deploying Base Infrastructure
8.2.5 Stage #2 Application Infrastructure
8.2.6 Ready Player One
8.3 Rearchitecting the MMORPG to use Managed Services
8.3.1 Code
8.3.2 Ready Player Two
8.4 Fireside Chat
8.5 Summary
Part 3: Becoming a Terraform Guru
Zero Downtime Deployments
9.1 Lifecycle Customizations
9.1.1 Zero Downtime Deployments with create_before_destroy
9.1.2 Additional Considerations
9.2 Blue/Green Deployments
9.2.1 Architecture
9.2.2 Code
9.2.3 Deploy
9.2.4 Blue/Green Cutover
9.2.5 Additional Considerations
9.3 Self Service Resource Provisioning
9.3.1 Architecture
9.3.2 Code
9.3.3 Initial Deployment
9.3.4 Tainting and Rotating Access Keys
9.3.5 Tech Debt and the Need to Refactor
9.4 Advanced Terraform State Concepts
9.4.1 Deep Dive into Serials and Lineages
9.5 Performing State File Surgery
9.5.1 Architecture
9.5.2 Code
9.5.3 Importing and Moving Stateful Data
9.5.4 Redeploy
9.5.5 Importing Resources
9.6 Fireside Chat
9.7 Summary
10 Extending Terraform by Writing your own Provider
10.1 Blueprints for a Terraform Provider
10.1.1 Terraform Provider Basics
10.1.2 Petstore Provider Architecture
10.2 Writing the Petstore Provider
10.2.1 Setting up the Go Project
10.2.2 Configuring the Provider Schema
10.3 Defining a Pet Resource
10.3.1 Defining Create() – CRUD Lifecycle Management
10.3.2 Defining Read() – CRUD Lifecycle Management
10.3.3 Defining Update() – CRUD Lifecycle Management
10.3.4 Defining Delete() – CRUD Lifecycle Management
10.4 Writing Acceptance Tests
10.4.1 Testing the Provider Schema
10.4.2 Testing the Pet Resource
10.5 Build, Test, Deploy
10.5.1 Deploy the Petstore API
10.5.2 Test and Build the Provider
10.6 Fireside Chat
10.7 Summary
11 Developing a Terraform CICD platform
12 Secrets Management
About the Technology
Terraform is a provisioning tool for building, changing, and combining cloud infrastructure safely and efficiently. By defining infrastructure as code, Terraform empowers its users to deploy their entire stack to the cloud at the touch of a button. This code-based infrastructure can be shared easily among team members, managed using version control, and configured to reliably test new configurations without running the risk of breaking live systems. Easily integrated with all major cloud providers, mastery of Terraform is increasingly essential for anyone with a role working in DevOps, Operations, or SRE.
About the book
Terraform in Action unlocks the full potential of infrastructure you can automate, scale, and manage programmatically using Terraform. Through hands-on projects, including deploying a multiplayer game and a fully-managed Kubernetes cluster, distinguished Terraform expert Scott Winkler shows you how to think in Terraform rather than just copy-paste code. Written to focus on Terraform 0.12 and covering new syntax, the book covers both fundamentals and advanced designs, such as zero-downtime deployments and creating your own Terraform provider. When you’re done, you’ll be able to seamlessly manage Terraform cloud architecture and use Terraform as the basis for a continuous development/continuous delivery platform.
What's inside
- Cloud architecture with Terraform
- Sharing Terraform modules and the private module registry
- Running Terraform securely in a multitenant environment
- Strategies for performing Blue/Green deployments with Terraform
About the reader
Written for readers experienced with major cloud platforms such as AWS or Google Cloud. Examples are in the Go language.
About the author
Scott Winkler is a distinguished Terraform speaker. He has presented at HashiConf 2018 and HashiTalks 2019 on novel ways to leverage Terraform for the enterprise. His ideas have made their way into the open source community, either through his personal contribution or indirectly through Hashicorp partners. He has trained dozens of DevOps engineers on how to use Terraform and has created comprehensive CICD Terraform solutions for businesses.
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