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AWSTemplateFormatVersion: 2010-09-09
Description: A template for a Python-based Config Rule deployed to AWS Lambda.
Transform:
- AWS::Serverless-2016-10-31
- AWS::CodeStar
Parameters:
ProjectId:
Type: String
Description: AWS CodeStar projectID is used to associate new resources to this project.
CodeDeployRole:
Type: String
Description: IAM role to allow AWS CodeDeploy to manage deployment of AWS Lambda functions
Stage:
Type: String
Description: The name for a project pipeline stage, such as Staging or Prod, for which resources are provisioned and deployed.
Default: ''
Globals:
Function:
AutoPublishAlias: live
DeploymentPreference:
Enabled: true
Type: Canary10Percent5Minutes
Role: !Ref CodeDeployRole
Resources:
ConfigRuleLambdaPermission:
Type: AWS::Lambda::Permission
Properties:
Action: lambda:InvokeFunction
Principal: config.amazonaws.com
FunctionName:
Ref: ConfigRuleLambdaFunction
ConfigRuleLambdaFunction:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Sub 'awscodestar-${ProjectId}-lambda-ConfigRuleLambdaFunction'
Handler: rule_code.lambda_handler
Runtime: python3.7
Role:
Fn::GetAtt:
- LambdaExecutionRole
- Arn
ConfigRule:
DependsOn: ConfigRuleLambdaPermission
Type: AWS::Config::ConfigRule
Properties:
ConfigRuleName:
Ref: ProjectId
Description: Custom AWS Config Rule created with AWS Codestar to check whether your EC2 instances are of the specified instance type.
InputParameters:
desiredInstanceType: t3.micro
Scope:
ComplianceResourceTypes:
- 'AWS::EC2::Instance'
Source:
Owner: CUSTOM_LAMBDA
SourceIdentifier:
Fn::GetAtt:
- ConfigRuleLambdaFunction
- Arn
SourceDetails:
- EventSource: aws.config
MessageType: ConfigurationItemChangeNotification
- EventSource: aws.config
MessageType: OversizedConfigurationItemChangeNotification
LambdaExecutionRole:
Description: Creating service role in IAM for AWS Lambda
Type: AWS::IAM::Role
Properties:
RoleName: !Sub 'CodeStar-${ProjectId}-Execution${Stage}'
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service: [lambda.amazonaws.com]
Action: sts:AssumeRole
Path: /
ManagedPolicyArns:
- !Sub 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
- !Sub 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSConfigRulesExecutionRole'
PermissionsBoundary: !Sub 'arn:${AWS::Partition}:iam::${AWS::AccountId}:policy/CodeStar_${ProjectId}_PermissionsBoundary'