Terraform Tutorial — Variables
Variables make your Terraform configuration reusable. Instead of hardcoding values like region names, instance types, and bucket names, you declare variables and provide values at runtime. This chapter covers variable types, declaration, validation, and sensitive variables.
What’s in this Chapter?
| # | Topic | Description |
|---|---|---|
| 1 | Variable Types | string, number, bool, list, map, object |
| 2 | Declaring Variables | The variable block, defaults, descriptions |
| 3 | tfvars and Environment Variables | Providing values, precedence order |
| 4 | Variable Validation | Custom rules and error messages |
| 5 | Sensitive Variables | Hiding secrets in plan/output |
| 6 | Practice Exercises | Hands-on variable exercises |
