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"AWSTemplateFormatVersion": "2010-09-09",
"Description": "AWS CloudFormation Sample Template Config: This template demonstrates the usage of AWS Config resources. **WARNING** You will be billed for the AWS resources used if you create a stack from this template.",
"Metadata": {
"License": "Apache-2.0"
},
"Parameters": {
"DeliveryChannelExists": {
"Description": "Do you have an exisiting AWS Config delivery channel?",
"Type": "String",
"AllowedValues": [
"false",
"true"
],
"Default": "false"
},
"Ec2VolumeAutoEnableIO": {
"Type": "String",
"AllowedValues": [
"false",
"true"
],
"Default": "false"
},
"Ec2VolumeTagKey": {
"Type": "String",
"Default": "CostCenter"
}
},
"Conditions": {
"CreateDeliveryChannel": {
"Fn::Equals": [
{
"Ref": "DeliveryChannelExists"
},
"false"
]
}
},
"Resources": {
"Ec2Volume": {
"Type": "AWS::EC2::Volume",
"Metadata": {
"guard": {
"SuppressedRules": [
"EC2_EBS_ENCRYPTION_BY_DEFAULT",
"ENCRYPTED_VOLUMES"
]
}
},
"Properties": {
"AutoEnableIO": {
"Ref": "Ec2VolumeAutoEnableIO"
},
"Size": "5",
"AvailabilityZone": {
"Fn::Select": [
0,
{
"Fn::GetAZs": null
}
]
},
"Tags": [
{
"Key": {
"Ref": "Ec2VolumeTagKey"
},
"Value": "Ec2VolumeTagValue"
}
]
}
},
"ConfigRecorder": {
"Type": "AWS::Config::ConfigurationRecorder",
"Properties": {
"Name": "default",
"RecordingGroup": {
"ResourceTypes": [
"AWS::EC2::Volume"
]
},
"RoleARN": {
"Fn::GetAtt": [
"ConfigRole",
"Arn"
]
}
}
},
"DeliveryChannel": {
"Type": "AWS::Config::DeliveryChannel",
"Properties": {
"ConfigSnapshotDeliveryProperties": {
"DeliveryFrequency": "Six_Hours"
},
"S3BucketName": {
"Ref": "ConfigBucket"
},
"SnsTopicARN": {
"Ref": "ConfigTopic"
}
},
"Condition": "CreateDeliveryChannel"
},
"ConfigBucket": {
"Type": "AWS::S3::Bucket",
"Metadata": {
"guard": {
"SuppressedRules": [
"S3_BUCKET_DEFAULT_LOCK_ENABLED",
"S3_BUCKET_VERSIONING_ENABLED",
"S3_BUCKET_REPLICATION_ENABLED",
"S3_BUCKET_LOGGING_ENABLED"
]
}
},
"Properties": {
"BucketEncryption": {
"ServerSideEncryptionConfiguration": [
{
"ServerSideEncryptionByDefault": {
"SSEAlgorithm": "AES256"
}
}
]
},
"PublicAccessBlockConfiguration": {
"BlockPublicAcls": true,
"BlockPublicPolicy": true,
"IgnorePublicAcls": true,
"RestrictPublicBuckets": true
}
}
},
"ConfigTopic": {
"Type": "AWS::SNS::Topic"
},
"ConfigTopicPolicy": {
"Type": "AWS::SNS::TopicPolicy",
"Properties": {
"PolicyDocument": {
"Id": "ConfigTopicPolicy",
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "config.amazonaws.com"
},
"Action": "SNS:Publish",
"Resource": "*"
}
]
},
"Topics": [
{
"Ref": "ConfigTopic"
}
]
}
},
"ConfigRuleForVolumeTags": {
"Type": "AWS::Config::ConfigRule",
"DependsOn": "ConfigRecorder",
"Properties": {
"InputParameters": {
"tag1Key": "CostCenter"
},
"Scope": {
"ComplianceResourceTypes": [
"AWS::EC2::Volume"
]
},
"Source": {
"Owner": "AWS",
"SourceIdentifier": "REQUIRED_TAGS"
}
}
},
"ConfigRuleForVolumeAutoEnableIO": {
"Type": "AWS::Config::ConfigRule",
"DependsOn": [
"ConfigPermissionToCallLambda",
"ConfigRecorder"
],
"Properties": {
"ConfigRuleName": "ConfigRuleForVolumeAutoEnableIO",
"Scope": {
"ComplianceResourceId": {
"Ref": "Ec2Volume"
},
"ComplianceResourceTypes": [
"AWS::EC2::Volume"
]
},
"Source": {
"Owner": "CUSTOM_LAMBDA",
"SourceDetails": [
{
"EventSource": "aws.config",
"MessageType": "ConfigurationItemChangeNotification"
}
],
"SourceIdentifier": {
"Fn::GetAtt": [
"VolumeAutoEnableIOComplianceCheck",
"Arn"
]
}
}
}
},
"ConfigPermissionToCallLambda": {
"Type": "AWS::Lambda::Permission",
"Metadata": {
"guard": {
"SuppressedRules": [
"LAMBDA_FUNCTION_PUBLIC_ACCESS_PROHIBITED"
]
}
},
"Properties": {
"FunctionName": {
"Fn::GetAtt": [
"VolumeAutoEnableIOComplianceCheck",
"Arn"
]
},
"Action": "lambda:InvokeFunction",
"Principal": "config.amazonaws.com"
}
},
"VolumeAutoEnableIOComplianceCheck": {
"Type": "AWS::Lambda::Function",
"Metadata": {
"guard": {
"SuppressedRules": [
"LAMBDA_INSIDE_VPC"
]
}
},
"Properties": {
"Code": {
"ZipFile": "var aws = require('aws-sdk');\nvar config = new aws.ConfigService();\nvar ec2 = new aws.EC2();\nexports.handler = function(event, context) {\n var compliance = evaluateCompliance(event, function(compliance, event) {\n var configurationItem = JSON.parse(event.invokingEvent).configurationItem;\n var putEvaluationsRequest = {\n Evaluations: [{\n ComplianceResourceType: configurationItem.resourceType,\n ComplianceResourceId: configurationItem.resourceId,\n ComplianceType: compliance,\n OrderingTimestamp: configurationItem.configurationItemCaptureTime\n }],\n ResultToken: event.resultToken\n };\n config.putEvaluations(putEvaluationsRequest, function(err, data) {\n if (err) context.fail(err);\n else context.succeed(data);\n });\n });\n};\nfunction evaluateCompliance(event, doReturn) {\n var configurationItem = JSON.parse(event.invokingEvent).configurationItem;\n var status = configurationItem.configurationItemStatus;\n if (configurationItem.resourceType !== 'AWS::EC2::Volume' || event.eventLeftScope || (status !== 'OK' && status !== 'ResourceDiscovered'))\n doReturn('NOT_APPLICABLE', event);\n else ec2.describeVolumeAttribute({VolumeId: configurationItem.resourceId, Attribute: 'autoEnableIO'}, function(err, data) {\n if (err) context.fail(err);\n else if (data.AutoEnableIO.Value) doReturn('COMPLIANT', event);\n else doReturn('NON_COMPLIANT', event);\n });\n}\n"
},
"Handler": "index.handler",
"Runtime": "nodejs20.x",
"Timeout": "30",
"Role": {
"Fn::GetAtt": [
"LambdaExecutionRole",
"Arn"
]
}
}
},
"LambdaExecutionRole": {
"Type": "AWS::IAM::Role",
"Properties": {
"AssumeRolePolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": [
"lambda.amazonaws.com"
]
},
"Action": [
"sts:AssumeRole"
]
}
]
},
"Policies": [
{
"PolicyName": "root",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"logs:*",
"config:PutEvaluations",
"ec2:DescribeVolumeAttribute"
],
"Resource": "*"
}
]
}
}
]
}
},
"ConfigRole": {
"Type": "AWS::IAM::Role",
"Properties": {
"AssumeRolePolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": [
"config.amazonaws.com"
]
},
"Action": [
"sts:AssumeRole"
]
}
]
},
"ManagedPolicyArns": [
"arn:aws:iam::aws:policy/service-role/AWS_ConfigRole"
],
"Policies": [
{
"PolicyName": "root",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "s3:GetBucketAcl",
"Resource": {
"Fn::Join": [
"",
[
"arn:aws:s3:::",
{
"Ref": "ConfigBucket"
}
]
]
}
},
{
"Effect": "Allow",
"Action": "s3:PutObject",
"Resource": {
"Fn::Join": [
"",
[
"arn:aws:s3:::",
{
"Ref": "ConfigBucket"
},
"/AWSLogs/",
{
"Ref": "AWS::AccountId"
},
"/*"
]
]
},
"Condition": {
"StringEquals": {
"s3:x-amz-acl": "bucket-owner-full-control"
}
}
},
{
"Effect": "Allow",
"Action": "config:Put*",
"Resource": "*"
}
]
}
}
]
}
}
},
"Outputs": {
"ConfigRuleForVolumeTagsArn": {
"Value": {
"Fn::GetAtt": [
"ConfigRuleForVolumeTags",
"Arn"
]
}
},
"ConfigRuleForVolumeTagsConfigRuleId": {
"Value": {
"Fn::GetAtt": [
"ConfigRuleForVolumeTags",
"ConfigRuleId"
]
}
},
"ConfigRuleForVolumeAutoEnableIOComplianceType": {
"Value": {
"Fn::GetAtt": [
"ConfigRuleForVolumeAutoEnableIO",
"Compliance.Type"
]
}
}
}
}
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