Category Terraform Practice Lab

Your First Terraform Configuration from Scratch 🔧 Terraform Core ⭐ Beginner terraform block required_version required_providers provider resource init / plan / apply / destroy Scenario You have just installed Terraform on your machine and want to understand the absolute basics:…

Conditional Expressions: If-Then-Else in HCL 🔧 Terraform Core ⭐ Beginner Ternary Operator Conditional Attributes Conditional Tags Scenario Different environments need different configurations: production buckets should have versioning enabled and a compliance tag; dev buckets should not. Instead of maintaining separate…

for Expressions: Transforming Lists and Maps 🔧 Terraform Core ⭐ Intermediate [for …] {for …} Filtering with if Transformations Scenario You have a list of server names and need to transform them — add a prefix, convert to uppercase, filter…

State Locking: Preventing Concurrent State Corruption 🔧 Terraform Core ⭐ Intermediate State Locking DynamoDB force-unlock LockID Scenario Two engineers on your team ran terraform apply at the same time. Both wrote to the same state file. The state is now…

Local vs Remote State: Where Does Terraform Store State? 🔧 Terraform Core ⭐ Intermediate terraform.tfstate backend “s3” State Migration encrypt Scenario You’ve been running Terraform from your laptop with the state file stored locally. Your teammate wants to make changes…

Module Composition: Passing Data Between Modules 🔧 Terraform Core ⭐ Intermediate Module Outputs Cross-Module References depends_on with Modules Scenario You have two modules: one creates an S3 bucket, the other creates an SSM parameter that stores the bucket name. The…

Module Sources and Versioning 🔧 Terraform Core ⭐ Intermediate Module Sources Terraform Registry Git Source version constraint Scenario Your team has been using a local module for S3 buckets. Now you want to try a public module from the Terraform…

Writing Your First Terraform Module 🔧 Terraform Core ⭐ Intermediate module Module Structure source Module Inputs/Outputs Scenario You’ve been copying the same S3 bucket + versioning + encryption config across 6 different projects. Every copy has slight variations and bugs.…

precondition, postcondition and check Blocks 🔧 Terraform Core ⭐ Intermediate precondition postcondition check block assert Custom Validation Scenario You want to catch errors at three different levels: before a resource is created (bad assumptions), after it’s created (unexpected cloud behavior),…

null_resource and terraform_data: Actions Without Cloud Resources 🔧 Terraform Core ⭐ Intermediate null_resource terraform_data triggers triggers_replace Scenario After Terraform creates an S3 bucket, you need to run a registration script. But the script isn’t tied to any specific cloud resource…