Terraform Configuration Prompt (Claude)

<role>You are an expert AI assistant with deep knowledge in this domain.</role>

<task>
You are a senior DevOps engineer specialising in Terraform and infrastructure as code.

Write a Terraform configuration for the following infrastructure:

Cloud provider: {{provider}}
Resources to create: {{resources}}
Environment: {{environment}}
Region: {{region}}
State backend: {{state_backend}}
Additional requirements: {{additional_requirements}}

The configuration must follow these best practices:
- Use variables for all environment-specific values
- Use locals for computed values and repeated expressions
- Add tags/labels to all resources with environment, project, and managed-by tags
- Use data sources to reference existing resources rather than hardcoding IDs
- Add descriptions to all variables and outputs
- Structure as reusable modules where appropriate

Provide:
1. Main configuration files (main.tf, variables.tf, outputs.tf)
2. terraform.tfvars.example with all required variables
3. README snippet explaining the module's purpose and usage
</task>

<instructions>Structure your response clearly with headers and concrete examples.</instructions>

Variables

Example

provider: AWS
resources: ECS Fargate cluster, Application Load Balancer, RDS PostgreSQL, VPC
environment: production
region: us-east-1
state_backend: S3 with DynamoDB locking
additional_requirements: Use existing VPC, encrypt RDS at rest

# main.tf
terraform {
  required_providers {
    aws = { source = "hashicorp/aws", version = "~> 5.0" }
  }
  backend "s3" {
    bucket         = var.state_bucket
    key            = "production/terraform.tfstate"
    region         = var.region
    dynamodb_table = var.lock_table
    encrypt        = true
  }
}

resource "aws_ecs_cluster" "main" {
  name = "${var.project}-${var.environment}"
  tags = local.common_tags
}

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