{
  "DBCluster": {
    "Type": "AWS::RDS::DBCluster",
    "Properties": {
      "Engine": "aurora",
      "AvailabilityZones": [
        "us-east-1a",
        "us-east-1d"
      ],
      "BackupRetentionPeriod": 7,
      "DBClusterParameterGroupName": {
        "Ref": "ParameterGroup"
      },
      "DBSubnetGroupName": {
        "Ref": "DBSubnetGroup"
      },
      "EngineVersion": "5.6.10a",
      "Port": 3306,
      "PreferredBackupWindow": "22:00-22:30",
      "PreferredMaintenanceWindow": "02:00-02:30",
      "SnapshotIdentifier": {
        "Ref": "SnapshotId"
      },

      "Tags": [
        {
          "Key": "Name",
          "Value": "test"
        }
      ],
      "VpcSecurityGroupIds": [
        {
          "Ref": "SecurityGroupId"
        }
      ]
    }
  }
}