Parameterize Infrastructure Configurations Using Terraform Variables and Outputs

Table of Contents

1. Challenge

   Access the Terminal

   • Use the Lab Credentials and Instant Terminal to log into the terminal.
   • Verify the Terraform status.
2. Challenge

   Define Typed Input Variables with Default, Required, and Sensitive Values

   • Set up the project directory and create Terraform configuration files with providers.
   • Define input variables of various types, with default, required, and sensitive values.
   • Initialize the workspace and run terraform plan to see how variables are used.
3. Challenge

   Use Expressions and Functions to Create Dynamic Values

   • Construct dynamic values using interpolation and template syntax.
   • Use functions (length, join, lookup, upper, format) to transform data.
   • Use conditional (ternary) expressions for environment-aware configs.
4. Challenge

   Explore Variable Precedence with Variable Files and CLI Overrides

   • Create terraform.tfvars and environment-specific variable files (for example,dev.tfvars and prod.tfvars).
   • Override variables using -var and -var-file from the CLI.
   • Apply configs with different variable sources to verify precedence.
5. Challenge

   Produce and View Sensitive and Non-Sensitive Outputs

   • Define outputs referencing resource attributes and computed values.
   • Mark outputs as sensitive to hide confidential data.
   • Retrieve outputs using terraform output, including sensitive ones with -json.