Introduction to Infrastructure as Code: A Brief Guide to the Future of DevOps

Table of Contents
About the Authors
About the Technical Reviewer
Acknowledgments
Introduction
Part 1: Concepts
	Chapter 1: Introduction to Infrastructure as Code
		The Culture of DevOps
		The Evolution from DevOps to Infrastructure as Code
		What Is Infrastructure as Code?
			The Perspectives
		Benefits Adapting Infrastructure as Code
			Improved Time to Production
			Reduction in Drifting Configurations
			Faster and Efficient Development Life Cycle
			Maximizing the Scope of Provisioning
			Lowered Costs and Increase in ROI
		Adapting Tools of Infrastructure as Code
			Factors Deciding Adaption of Infrastructure as Code
			Approaches for Infrastructure as Code
		Best Practices of Infrastructure as Code
		The Way Ahead
	Chapter 2: Patterns and Principles of Infrastructure as Code
		The Emergence of Infrastructure as Code
		The Focus with Infrastructure as Code
		The Challenges with Infrastructure as Code
			Sprawling Servers
			Configuration Drift
			Snowflake Server
			Fragility of Infrastructure
			Fear of Automation
			Erosion of Infrastructure
		Considerations for Quality Infrastructure
			In-Depth Knowledge
			Organizational Workflow
			Perpetual Steps
		The Principles of Infrastructure as Code
			Idempotency
			Immutability
			Easily Reproducible Systems
			Easily Disposable Systems
			Easily Repeatable Processes
			Consistent Systems
			Ever-Evolving Designs
			Self-Reliant Documentation
		The Patterns of Infrastructure as Code
			Updates in Documentation
			Using GitOps
			Securing Your Infrastructure
				Securing Secrets
				Adapting Security Standards
				Restricting User Privileges
				Relying on Trusted Sources
				Security Measures
					Least Privileged Position
					Using Security Tools
					Infrastructure Updates
					Threat Detection
			Testing the Infrastructure
		Concerns with Infrastructure as Code
		Infrastructure as Code at Scale
			Evolving Business Requirements
			Evolving Security Requirements
			Evolving Provider Requirements
		The Way Ahead
	Chapter 3: Management of Infrastructure as Code
		The Emergence of Infrastructure Teams
		Preparing Infrastructure as Code
			Evaluation of Infrastructure
			Choosing the Right Security Mechanisms
			Structuring the Data
			Automating Workloads
			Uniform Governance
			Hybrid Strategies
		Blue-Green Deployment Strategy
			Process and Architecture
			Working Mechanism
			Preparing Deployments
			Adapting Simplicity
			Environment Replicability
		Configuration Management
			Process and Architecture
		The Way Ahead
	Chapter 4: Production Complexity Management
		Modern Application Infrastructures
		Managing Deployments Without Downtime
		Canary Deployment Strategy
			Process and Architecture
			Working Mechanism
			Adapting Simplicity
			Environment Replicability
		Rolling Release Deployment Strategy
			Process and Architecture
		Steps for Managing Production Complexity
			Harnessing the Power
			Fail-Safe Environment Management
			Monitoring Your Infrastructure
			Compartmentalizing Releases
			Adapting Serverless Architecture
			Feature Flagging
			The Impact of Deployment Strategies
		Caveats While Managing Complex Production Environments
		The Way Ahead
	Chapter 5: Business Solutions with Infrastructure as Code
		Managing Modern Infrastructures
		Enabling Business Possibilities
		Enabling Domain Sustainability
		Supporting Evolving Strategies
		Decision-Making for Businesses
		The Way Ahead
Part 2: Hands-on Experience
	Chapter 6: Hands-on Infrastructure as Code with Hashicorp Terraform
		Introduction to Terraform
		Why Choose Terraform?
		Understanding Terraform
			Core Concepts
			Directory Structure
		How Terraform Works
			Terraform Core
			Providers
		Implementing Terraform in Real Projects
			Priority Order for Terraform Variables
			Declaring Output Variables
			Declaring Terraform Resources
			Terraform Provider
			Terraform Modules
			Terraform Provisioner
			Terraform State File
			Example Terraform Configuration
			Terraform Command-Line Interface
		Terraform Use Cases
			Supporting Platform as a Service
			Managing Self-Service Clusters
			Performing Multicloud Deployments
			Managing Parallel Environments
			Application Infrastructure Automation
			Managing Software-Defined Networks
			Policy Compliance
		The Way Ahead
	Chapter 7: Hands-on Infrastructure as Code with Puppet
		Introduction to Puppet
		Why Choose Puppet?
		Understanding Puppet
			Architecture
				Puppet Master
				Puppet Agents
				Configuration Repository
				Facts
				Catalog
			Configuration
			Module Structure
			Security Mechanisms
		How Puppet Works
			Puppet Infrastructure
			Plugins
			Indirector
		Implementing Puppet in Real Projects
			Getting Started with Puppet
			Preparing the Repository
			Running the Repository
			Setting Up Users
			Creating Modules
			Dynamic File Generation
			Modifying Configurations
			Managing Repositories
			Puppet Command-Line Interface
		The Way Ahead
	Chapter 8: Introduction to Infrastructure as Code with Chef
		Introduction to Chef
		Understanding Chef
			Recipe
			Cookbook
			Resource
			Attributes
			Metadata
			Templates
			Libraries
		Chef Infrastructure
			Chef Workstation
			Configuration of Nodes with Chef Clients
			Chef Habitat
			Chef InSpec
		Final Words
Index