Infrastructure-as-Code Automation Using Terraform, Packer, Vault, Nomad and Consul: Hands-on Deployment, Configuration, and Best Practices

Description

Discover the methodologies and best practices for getting started with HashiCorp tools, including Terraform, Vault, and Packer. The book begins with an introduction to the infrastructure-as-code concept while establishing the need for automation and management technologies. You’ll go over hands-on deployment, configuration, and best practices for Terraform, Packer, Vault, Nomad, and Consul. You’ll then delve deeper into developing automation code using Terraform for automating AWS/Azure/GCP public cloud tasks; advanced topics include leveraging Vault for secrets management and Packer for image management. Along the way you will also look at Nomad and Consul for managing application orchestration along with network interconnectivity. In each chapter you will cover automated infrastructure and application deployment on the VM/container base ecosystem. The book provides sample code and best-practice guidance for developers and architects to look at infrastructure-as-code adoption from a holistic viewpoint.            All the code presented in the book is available in the form of scripts, which allow you to try out the examples and extend them in interesting ways.  What You Will Learn Get an overview of the architecture of Terraform, Vault, Packer, Nomad, and ConsulFollow hands-on steps for enabling Terraform, Vault, Packer, Nomad, and ConsulAutomate various services on the public cloud, including AWS, Azure, and GCP  Who This Book Is For  Developers, architects, and administrators who want to learn about infrastructure-as-code automation. Table of Contents About the Authors About the Technical Reviewer Acknowledgments Chapter 1: Getting Started with HashiCorp Automation Solutions Introduction to Infrastructure as Code Introduction to HashiCorp Automation Packer Terraform Vault Nomad Consul Vagrant Boundary Waypoint Summary Chapter 2: Getting Started with HashiCorp Terraform Introduction to HashiCorp Terraform Terraform CLI (Open Source) Terraform Cloud Terraform Enterprise Comparing the Options Setting up an AWS Account Getting Started with Terraform Cloud Terraform Workflow Getting Started with Terraform CLI What’s New in Terraform 0.14 Terraform 0.14 vs. Terraform 0.13 Summary Chapter 3: Understanding Terraform Programming Constructs Configuration Language Arguments, Blocks, and Expressions Code Organization Configuration Ordering Resources Provider Input Variables Environment Variables Output Values Local Values Modules Creating a Custom Module Version count and for_each depends_on Module Providers Provider Version Constraints in Modules Automatic Installation of Third-Party Providers Provider Plug-ins in a Local Filesystem Data Sources Backend Configuration Backend Types Backend Initialization Provisioners Creation-Time Provisioners Destroy-Time Provisioners Multiple Provisioners Types of Provisioners Generic Provisioners File Provisioners Local-Exec Provisioners Remote-Exec Provisioners Vendor Provisioners Chef Provisioners Summary Chapter 4: Automating Public Cloud Services Using Terraform Automating the GCP Public Cloud Using Terraform Creating a VPC and Subnet with Terraform Creating a Virtual Machine with Terraform Creating a GCS Bucket with Terraform Automating the Azure Public Cloud Using Terraform Summary Chapter 5: Getting Started with Vault Introduction to HashiCorp Vault Understanding Vault’s Logical Architecture Understanding Vault’s Security Model Installing Vault CLI and Integration with AWS Summary Chapter 6: Getting Started with HashiCorp Packer Introduction to HashiCorp Packer Builders Communicators Provisioners Post-Processors Variables Using Declared Variables in Templates Using Environment Variables in Templates Installing Packer Hands-on Exercise to Automate AWS AMI Summary Chapter 7: Getting Started with HashiCorp Consul Introduction to HashiCorp Consul Service Discovery Configuration Management Service Mesh and Network Segmentation Architecture Agent Catalog Anti-Entropy Consensus Protocol Gossip Protocol LAN Gossip Pool WAN Gossip Pool Installing Consul Service Discovery Using Consul Intention Deletion Service Registration DNS and Health Checks Using Consul Summary Chapter 8: Getting Started with Nomad Container Orchestration Introduction to Nomad Nomad Architecture Autoscaling Overview Dynamic Application Sizing Horizontal Cluster Autoscaling Horizontal Application Autoscaling Installing Nomad Policy-Driven Governance in Nomad Namespaces Resource Quotas Sentinel Policies Nomad ACLs Tokens Policies Rules Capabilities Container Application Deployment Using Nomad Summary Index