Cost analysis

Crust uses OpenAI to analyze your Terraform infrastructure and identify cost optimization opportunities.

How It Works

When you run crust cost, Crust will:

1. Execute your Terraform plan
2. Analyze infrastructure costs
3. Compare with current infrastructure
4. Present results in a clear and formatted way

Cost Analysis Features

1. Resource Cost Calculation

• Individual costs per resource
• Monthly and annual projections
• Service breakdown

2. Change Impact Analysis

• Cost changes relative to current state
• New resource costs
• Savings from removed resources

3. Cost Optimization

• Identification of potential savings
• Suggestions for cost-effective alternatives
• Highlighting of expensive resources

Usage

Basic Usage

crust cost

Advanced Usage

# Show detailed analysis
crust cost --verbose

Output Format

Table Format (Default)

Cost Analysis Results
====================

Resource Type     Monthly Cost  Change   Description
---------------  ------------  -------  -------------------------
aws_ec2_instance $100.00       +$50.00  t3.large instance
aws_s3_bucket    $10.00        -$5.00   standard storage
aws_rds_instance $200.00       +$100.00 db.t3.large instance

Total Monthly Cost: $310.00 (+$145.00)

Best Practices

1. Run cost analysis early: Include cost analysis in your development workflow
2. Review significant changes: Pay attention to large cost increases
3. Use in CI/CD: Integrate cost analysis into your CI/CD pipeline
4. Regular checks: Run cost analysis regularly to track expenses

Cost Optimization Tips

1. Right-sizing: Use appropriate instance types
2. Use reserved instances: For predictable workloads
3. Implement auto-scaling: Scale resources based on demand
4. Monitor unused resources: Clean up unused resources regularly