deploy-self-hosted-github-runner-eks-using-terraform/tf_cfn_template.json at main · aws-samples/deploy-self-hosted-github-runner-eks-using-terraform · GitHub

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AWSTemplateFormatVersion: 2010-09-09
Description: Base infrastructure for the Terraform remote backend

Parameters:
  CommonTags:
    Description: Common tags to be applied to resources
    Type: CommaDelimitedList
    Default: "eks-gha-karpenter,IaC-CFN"

  prefix:
    Description: Prefix used for naming AWS resources
    Type: String
    Default: "eksghakrpntr"

  ddbPrefix:
    Description: Prefix used for naming DynamoDB resource
    Type: String
    Default: "eksghakrpntr"

Resources:
  KmsBucketKey:
    Type: AWS::KMS::Key
    Properties:
      Description: Key to encrypt the terraform backend bucket
      Enabled: True
      EnableKeyRotation: True
      KeyPolicy:
        Version: 2012-10-17
        Id: key-s3-bucket-terraform-backend
        Statement:
          - Sid: Enable IAM User Permissions
            Effect: Allow
            Principal:
              AWS: !Sub arn:aws:iam::${AWS::AccountId}:root
            Action: 'kms:*'
            Resource: '*'
      Tags:
      -
        Key: "Project"
        Value: !Select [ 0, !Ref CommonTags ]
      -
        Key: "Creation_Method"
        Value: !Select [ 1, !Ref CommonTags ]

  TerraformRemoteBackendBucket:
    Type: AWS::S3::Bucket
    DeletionPolicy: Retain
    Properties:
      BucketName: !Sub "${prefix}-${AWS::AccountId}-${AWS::Region}-terraform-state-bucket"
      BucketEncryption:
        ServerSideEncryptionConfiguration:
        - ServerSideEncryptionByDefault:
            SSEAlgorithm: 'aws:kms'
            KMSMasterKeyID: !GetAtt KmsBucketKey.KeyId
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
        IgnorePublicAcls: true
        RestrictPublicBuckets: true
      VersioningConfiguration:
        Status: Enabled
      LoggingConfiguration:
        DestinationBucketName: !Ref AccessLogsBucket
        LogFilePrefix: 'logs/'
      Tags:
      -
        Key: "Project"
        Value: !Select [ 0, !Ref CommonTags ]
      -
        Key: "Creation_Method"
        Value: !Select [ 1, !Ref CommonTags ]

  TerraformRemoteBackendBucketBucketPolicy:
    Type: AWS::S3::BucketPolicy
    Properties:
      Bucket: !Ref TerraformRemoteBackendBucket
      PolicyDocument:
        Statement:
          - Sid: DenyDeletingTerraformStateFiles
            Effect: Deny
            Principal: "*"
            Action: "s3:DeleteObject"
            Resource: !Sub "arn:aws:s3:::${TerraformRemoteBackendBucket}/*"

  AccessLogsBucket:
    Type: AWS::S3::Bucket
    DeletionPolicy: Retain
    Properties:
      BucketName: !Sub ${prefix}-${AWS::AccountId}-${AWS::Region}-tf-backend-accesslogs
      BucketEncryption:
        ServerSideEncryptionConfiguration:
        - ServerSideEncryptionByDefault:
            SSEAlgorithm: AES256
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
        IgnorePublicAcls: true
        RestrictPublicBuckets: true
      VersioningConfiguration:
        Status: Enabled
      Tags:
      -
        Key: "Project"
        Value: !Select [ 0, !Ref CommonTags ]
      -
        Key: "Creation_Method"
        Value: !Select [ 1, !Ref CommonTags ]

  TerrraformRemoteBackendDDB:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: !Sub ${ddbPrefix}-terraform-backend
      DeletionProtectionEnabled: true
      BillingMode: PAY_PER_REQUEST
      AttributeDefinitions:
        - AttributeName: LockID
          AttributeType: S
      KeySchema:
        - AttributeName: LockID
          KeyType: HASH
      SSESpecification:
        SSEEnabled: true
        SSEType: KMS
        KMSMasterKeyId: !GetAtt KmsBucketKey.Arn
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: true
      Tags:
      -
        Key: "Project"
        Value: !Select [ 0, !Ref CommonTags ]
      -
        Key: "Creation_Method"
        Value: !Select [ 1, !Ref CommonTags ]

Outputs:
  TerraformBackendBucketName:
    Value: !Ref TerraformRemoteBackendBucket
    Export:
      Name: 'TerraformBackendBucketName'

  TerraformBackendDynamoDBName:
    Value: !Ref TerrraformRemoteBackendDDB
    Export:
      Name: 'TerraformBackendDynamoDBName'