Template Scanner

• What is Template Scanner?
• Supported features
• Scan via UI
  • Scanning a CloudFormation template
  • Scanning AWS Cloud Development Kit (CDK)
  • Scanning Serverless Framework
  • Scanning Terraform
• Scan via API
• Supported Rules
• Scan via Github Pull Requests
• Why do I not see any scan results?

What is Template Scanner?

Supported features

• Using the application UI to upload templates
• Using the API to post requests with templates
• By installing the Template Scanner GitHub App and creating pull requests.

Feature	Template Scanner UI/API	Github Application
Graphical interface to load files
Public API
Account and Profile Rule settings
Github Integration
AWS CloudFormation
AWS Cloud Development Kit (CDK)
Serverless Framework (AWS)
Terraform (AWS And Azure)	Supported through Terraform Plan files (.json) and HCL templates (.tf)	Can interpret multiple Terraform language features: input variables, local values, reference expressions, jsonencode function call. Child modules are also supported for Terraform.

Scan via UI

1. Select the type of rule settings you want to scan for:
   • Default rule settings: upload and scan using rule settings from your organization.
   • Profile rule settings: upload and scan using rule settings from a selected profile.
   • Account rule settings: upload and scan using rule settings from a selected account.

Scanning a CloudFormation template

• CloudFormation templates can be uploaded in either JSON or YAML format.
• You can also use the ! Condition in YAML templates.

Scanning AWS Cloud Development Kit (CDK)

1. Install the AWS CDK CLI
2. In the directory with your CDK code, run cdk synth. This will output a YAML CloudFormation file (can also use --json if desired).
3. Use Template Scanner UI or API endpoints to scan the CloudFormation file generated by cdk synth.

Scanning Serverless Framework

1. In the directory with your serverless file, run serverless package to generate a JSON file in .serverless/cloudformation-template-update-stack.json.
2. Use Template Scanner UI or API endpoints to scan the CloudFormation file generated by serverless package.

Scanning Terraform

1. Terraform templates must be converted to a Terraform plan in JSON by following the steps below from your Command Line tool:
   1. In the same directory as .tf template, export your provider's access key, secret key, and export region (e.g. `export AWS_REGION=us-east-1`)
   2. Run the command terraform init
   3. Run the command terraform plan -out=your_file
   4. Run the command terraform show -json your_file > your_file.json. Your Terraform JSON plan is ready to be uploaded to the Template Scanner from the same folder as your .tf file.
2. Click on Upload and scan to view scan results for your selected rule settings.
3. You will get a message for missing parameters while scanning your template. Decide whether you want to Proceed or Cancel the scanning process.

   Note Resources with missing parameters will not be scanned and thereby result in partial scan results.

4. Review Checks from scan results. Failed checks will display a Resolve button with a link to resolution steps. For more information on the anatomy of the rule, see Rules.

   Note Resolution steps provided with failed checks are for workflows via CLI or Console. You can also use these steps as a guide for resolution within CloudFormation.

Scan via API

• AWS CloudFormation Example
• AWS Cloud Development Kit (CDK) Example
• Terraform (AWS) Example
• Serverless Framework (AWS) Example
• Terraform plan
• Terraform HCL

Scan via Github Pull Requests

Supported rules

• CloudFormation Template

• Terraform

Why do I not see any scan results?

1. Unsupported resource type or rules - Template Scanner only supports resource-level rules. Please refer to the APIs for a list of supported rules and resource types. We have plans to add support for more source types over time. If there is a specific resource type you need as a priority, please log in to Conformity and submit a ticket to our support team.
2. Parameter(s) with no default value - CloudFormation templates with parameters that have no default values may fail to be processed.
3. Unsupported AWS CloudFormation intrinsic functions - CloudFormation templates with unsupported intrinsic functions may not process or may not generate complete results. The following are the supported intrinsic functions in CloudFormation templates:
   • Fn::Base64
   • Fn::And
   • Fn::Equals
   • Fn::If
   • Fn::Not
   • Fn::Or
   • Fn::FindInMap
   • Fn::GetAtt
   • Fn::GetAZs
   • Fn::Join
   • Fn::Select
   • Fn::Split
   • Fn::Sub
   • Ref