Terraform for the Absolute Beginners with Labs

Learn how infrastructure as code enables provisioning, configuring, updating, and destroying resources with tools like Terraform and Ansible, while comparing configuration management, server templating, provisioning, and immutable infrastructure.

Discover how Terraform, an open source IaC tool by HashiCorp, provisions infrastructure across cloud and on-prem platforms via providers, using HCL declarative syntax and the init plan apply workflow.

Install Terraform by downloading the binary from terraform.io, add it to your path, and verify version 0.13 on Linux; learn hcl .tf basics with local file and random pit resources.

Explore the Terraform variable block, including default, type, and description, and learn to use string, number, boolean, list, map, set, object, and tuple types with type constraints.

Link resources by using resource attributes and attribute reference with interpolation to use the random_pet ID as the content of a file resource, creating dependent resources after Terraform apply.

Understand how Terraform state tracks infrastructure by refreshing in-memory state during plan and apply, creating the terraform.tfstate as the single source of truth for resource updates and plan accuracy.

Learn the purpose of state in Terraform, where the state file maps configurations to real infrastructure, enables plans and drift detection, tracks dependencies, and supports remote state for team collaboration.

Discover how Terraform state acts as the single source of truth and stores sensitive details. Learn why to prefer remote backends over Git and avoid manual edits.

Explore the difference between mutable and immutable infrastructure, showing how Terraform creates or destroys resources during updates, explains configuration drift, and introduces lifecycle rules to control order of changes.

Explore meta arguments in Terraform that enable looping to create multiple resource instances, such as loop-related meta arguments beyond depends_on and lifecycle, to automate multiple file resources.

Utilize the count meta-argument to create multiple resources from a filename list using count.index and length to size dynamically, while noting potential replacement risks.

Learn how to start with AWS, explore its core services—IAM, S3, and DynamoDB—and provision them with Terraform using the AWS provider and HCL in hands-on labs.

Guide learners through creating an AWS account, signing in as the root user, and navigating the AWS Management Console to explore services such as EC2, S3, RDS, DynamoDB, and IAM.

Explore identity and access management in AWS, create users and groups with least-privilege policies, attach administrator or custom policies, and use roles to grant EC2 and S3 access.

Discover AWS IAM essentials: create users and groups, attach policies (administrator, EC2 full, S3 full, read-only), and define a read-only EC2 role, with Terraform in the next lecture.

Learn to create IAM policies with Terraform, attach them to a user with aws_iam_policy and aws_iam_user_policy_attachment, following least privilege principle, and work with JSON policy documents via heredoc or admin-policy.json.

Create and manage AWS DynamoDB tables with Terraform using the DynamoDB table resource, define a cars table with a VIN hash key and on-demand billing, then add items.

Manage terraform state with commands like list, show, move, pull, and remove to query resource addresses and attributes, including remote state access, the JSON state format, and safe, nonmanual updates.

Explore AWS EC2 instances, the elastic compute cloud, virtual machines for scalable on-demand deployment of operating systems and software, with AMIs, instance types, EBS storage, and user data scripts.

Explore Terraform provisioners, including remote exec and local exec, to run scripts after resource creation, configure connections (SSH or WinRM), handle failures, and follow best practices over native options.

Learn how to use provisioners in Terraform wisely, balancing remote-exec with native resource options like AWS user data, and build reusable custom AMIs via Packer to minimize post-provisioning tasks.

learn how to import existing infrastructure into Terraform using the terraform import command, updating the state while manually defining the resource block and then managing it with plan and apply.