Terraform – Infrastructure as Code (IaC)
As enterprises seek to deploy and maintain increasingly complex cloud infrastructure, there is a necessity to use ’Infrastructure as Code’ (IaC) tools, like Terraform. An open-source, state management tool developed by HashiCorp, Terraform allows developers to use a common coding interface to work through their various clouds safely and efficiently. Attendees will leave being able to write and understand Terraform code (HCL), have a clear understanding of Terraform’s various components and supporting tools, as well as when to reach for Terraform over another IaC tool, such as Ansible.
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Prerequisites:
Although not required, students with some experience programming, or pre-existing knowledge of cloud architecture, will most appreciate the technical nature of this hands-on course.
Target Audience:
- DevOps Engineers
- Software Developers
- Technical Managers and Leads
- System and Cloud Administrators
- Network Engineers and Developers
Course Objectives:
- Writing Terraform HCL code
- Deploying into common clouds such as AWS, Azure, Google Cloud, Docker, Oracle, Kubernetes, and VMWare
- Where Terraform fits in the Enterprise CI/CD model
- Differences between Terraform and Ansible
- Best practices
- Prepare for HashiCorp’s Terraform Associate Certification
Course Outline:
Up and Running with Terraform
- Terraform Overview
- Defining ’declarative’
- How to think about Terraform (versus Ansible)
- Reviewing the Terraform Configuration
- Running the Terraform Configuration
- Provisioners
Syntax
- ’Low Level’ HCL syntax
- Style Conventions
- Comments
- Blocks
- Arguments
- JSON Configuration Syntax
Resources
- Keywords:
- depends_on
- count
- for_each
- provider
- lifecycle
- Data Sources
Variables and Output
- Input Variables
- Output Values
- Local Values
Modules
- Module Blocks
- Module Sources
- Meta Arguments
Terraform Templates
- templatefile Function
- Template Demonstration
- Introducing Data Sources
- Creating an External Data Source
- Building tftpl template files
Expressions
- Types and Values
- Strings and Templates
- Reference to Values
- Operators
- Function Calls
- Conditionals
- For Expressions
- Splat Expressions
- Dynamic Blocks
- Type Constraints
- Version Constraints
Functions
- String
- Collection
- Numeric
- Encoding
- Filesystem
- Date and Time
- Hash and Crypto
- IP Network
- Type Conversion
State
- Understanding the importance of state
- State storage and locking
- importing existing resources
- Remote State
- What to do when local state is lost
CICD Pipelines with Terraform
- Terraform and GitLab pipelines
- Terraform and Jenkins pipelines
Enterprise Case Studies
- Terraform and Docker
- Terraform and Kubernetes
- Terraform and Amazon AWS
- Terraform and Azure
- Terraform and Google Cloud Platform (GCP)
- Terraform and VMWare
- Terraform and Oracle
- Understanding how to apply Terraform to your unique infrastructure
Beyond Basics
- Intro to Go Programming
- Terraform Cloud
- Additional HashiCorp Offerings
- Backends
- Secrets
Hands-On Labs
Software Control Management
- SCM Option #1 – GitHub
- SCM Option #2 – GitLab
Overview of Terraform
- Terraform Install
Terraform Modules
- Up and Running with Terraform
- Terraform Variables
- Output Values
- CHALLENGE – Terraform and Docker
Beyond Basics
- Terraform CLI Workspaces
- Terraform Expressions and Errors
- Resources – replace vs taint
- Dynamic Operations with Functions
- Creating a Terraform Module
- Moving State – terraform state mv
- Dynamic Provisioning with tfvars Files
- Data Sources and HTTP Provider
Loops
- Looping Constructs – for_each
Provisioning
- local-exec Provisioner
- Creating Delays
- Terraform – templatefile Function
Terraform Cloud
- Terraform Cloud and Terraform Enterprise
- Triggering Cloud Builds via Git Commits
Dynamic Blocks
- Dynamic Blocks
AWS
- Terraform and AWS
- Output Values and AWS
- AWS and looping with count vs for_each
- Correcting Resource Drift and AWS
- CHALLENGE – Terraform and AWS
Azure
- Terraform and Azure
Google Cloud Platform
- Terraform and Google Cloud Platform
Oracle
- Terraform and Oracle Cloud Infrastructure
Terraform and Enterprise
- Deploy a Go RESTful API microservice with Terraform
- Terraform and Ansible
VMWare
- Terraform and VMWare
Helpful DevOps Tools (OPTIONAL)
- Open Policy Agents and Terraform
- GitHub Actions – GitLeaks
- GitHub Actions – Terraform
Terraform Review
- HashiCorp Terraform Study Guide
Appendix
- Glossary