OpenTofu
OpenTofu Early Variable Evaluation: Dynamic Backends
OpenTofu's early evaluation lets you use variables and locals in backend configuration, module sources, and required_providers — features Terraform doesn't...
3 min read
#HCL
9 articles
DevOpsTerraform Reference to Undeclared Resource: How to Fix
Fix the Terraform 'Reference to undeclared resource' error. Causes include typos, missing resources, wrong module references, and for_each/count confusion.
3 min read
DevOpsTerraform Unsupported Argument Error: How to Fix
Fix the Terraform 'An argument named X is not expected here' error. Common causes include wrong provider version, deprecated arguments, typos
3 min read
DevOpsTerraform Data Sources Explained: Read External Information
Learn Terraform data sources to read existing AWS resources, look up AMIs, query remote state, and reference external information in your configurations.
4 min read
DevOpsTerraform depends_on Explained: Control Resource Ordering
Learn when to use Terraform depends_on for explicit resource dependencies. Understand implicit vs explicit dependencies, common use cases
4 min read
DevOpsTerraform Locals Explained: Simplify Your Configuration
Learn Terraform locals to reduce duplication, compute values, and organize complex configurations. Practical examples with naming conventions, tag maps
4 min read
DevOpsTerraform Variables vs Outputs: Inputs, Outputs, and Data Flow
Understand Terraform variables (inputs) and outputs. Learn types, validation, defaults, sensitive values
4 min read
DevOpsTerraform Dynamic Blocks and For Expressions with Examples
Learn Terraform dynamic blocks and for expressions. Generate repeated blocks from variables, filter lists, transform maps, and build DRY security groups
6 min read
HCLHCL Language: Complete Guide to HashiCorp Configuration Language
Learn HCL (HashiCorp Configuration Language) for Terraform. Covers syntax, data types, variables, blocks, expressions, functions
5 min read