Category Terraform Practice Lab

Provisioners: local-exec, remote-exec and Why They Are a Last Resort 🔧 Terraform Core ⭐ Intermediate local-exec remote-exec file provisioner on_failure self destroy-time Scenario After creating an S3 bucket, you need to run a local script that registers the bucket in…

Lifecycle Rules: Controlling Resource Behavior 🔧 Terraform Core ⭐ Intermediate lifecycle create_before_destroy prevent_destroy ignore_changes replace_triggered_by Scenario Your production S3 bucket must never be accidentally deleted by terraform destroy. When renaming a bucket, you want the new one created before the…

templatefile() and file(): External Content in Terraform 🔧 Terraform Core ⭐ Intermediate templatefile() file() Heredoc Syntax User Data Scenario You need to pass a startup script to an EC2 instance. The script is complex — it installs packages, configures services,…

Collection Functions: Maps, Lists and Transformations 🔧 Terraform Core ⭐ Intermediate merge() flatten() lookup() keys() / values() coalesce() contains() Scenario You’re managing tags across multiple resources, flattening nested lists of subnets, looking up values from configuration maps, and handling defaults…

dynamic Blocks: Generating Repeated Nested Blocks 🔧 Terraform Core ⭐ Intermediate dynamic content {} iterator Nested Blocks Scenario You are managing a security group that needs 8 different ingress rules — one for SSH, HTTP, HTTPS, a monitoring port, and…