AWS::RDS::DBCluster

The AWS::RDS::DBCluster resource creates an Amazon Aurora DB cluster. For more information, see Managing an Amazon Aurora DB Cluster in the Amazon Aurora User Guide.

Note

You can only create this resource in AWS Regions where Amazon Aurora is supported.

Updating DB clusters

When properties labeled "Update requires: Replacement" are updated, AWS CloudFormation first creates a replacement DB cluster, then changes references from other dependent resources to point to the replacement DB cluster, and finally deletes the old DB cluster.

Important

We highly recommend that you take a snapshot of the database before updating the stack. If you don't, you lose the data when AWS CloudFormation replaces your DB cluster. To preserve your data, perform the following procedure:

1. Deactivate any applications that are using the DB cluster so that there's no activity on the DB instance.

2. Create a snapshot of the DB cluster. For more information about creating DB snapshots, see Creating a DB Cluster Snapshot.

3. If you want to restore your DB cluster using a DB cluster snapshot, modify the updated template with your DB cluster changes and add the SnapshotIdentifier property with the ID of the DB cluster snapshot that you want to use.

   After you restore a DB cluster with a SnapshotIdentifier property, you must specify the same SnapshotIdentifier property for any future updates to the DB cluster. When you specify this property for an update, the DB cluster is not restored from the DB cluster snapshot again, and the data in the database is not changed. However, if you don't specify the SnapshotIdentifier property, an empty DB cluster is created, and the original DB cluster is deleted. If you specify a property that is different from the previous snapshot restore property, a new DB cluster is restored from the specified SnapshotIdentifier property, and the original DB cluster is deleted.

4. Update the stack.

Currently, when you are updating the stack for an Aurora Serverless DB cluster, you can't include changes to any other properties when you specify one of the following properties: PreferredBackupWindow, PreferredMaintenanceWindow, and Port. This limitation doesn't apply to provisioned DB clusters.

For more information about updating other properties of this resource, see ModifyDBCluster. For more information about updating stacks, see AWS CloudFormation Stacks Updates.

Deleting DB clusters

The default DeletionPolicy for AWS::RDS::DBCluster resources is Snapshot. For more information about how AWS CloudFormation deletes resources, see DeletionPolicy Attribute.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Type" : "AWS::RDS::DBCluster",
  "Properties" : {
      "AssociatedRoles" : [ DBClusterRole, ... ],
      "AvailabilityZones" : [ String, ... ],
      "BacktrackWindow" : Long,
      "BackupRetentionPeriod" : Integer,
      "CopyTagsToSnapshot" : Boolean,
      "DatabaseName" : String,
      "DBClusterIdentifier" : String,
      "DBClusterParameterGroupName" : String,
      "DBSubnetGroupName" : String,
      "DeletionProtection" : Boolean,
      "EnableCloudwatchLogsExports" : [ String, ... ],
      "EnableHttpEndpoint" : Boolean,
      "EnableIAMDatabaseAuthentication" : Boolean,
      "Engine" : String,
      "EngineMode" : String,
      "EngineVersion" : String,
      "GlobalClusterIdentifier" : String,
      "KmsKeyId" : String,
      "MasterUsername" : String,
      "MasterUserPassword" : String,
      "Port" : Integer,
      "PreferredBackupWindow" : String,
      "PreferredMaintenanceWindow" : String,
      "ReplicationSourceIdentifier" : String,
      "RestoreType" : String,
      "ScalingConfiguration" : ScalingConfiguration,
      "SnapshotIdentifier" : String,
      "SourceDBClusterIdentifier" : String,
      "SourceRegion" : String,
      "StorageEncrypted" : Boolean,
      "Tags" : [ Tag, ... ],
      "UseLatestRestorableTime" : Boolean,
      "VpcSecurityGroupIds" : [ String, ... ]
    }
}

YAML

Type: AWS::RDS::DBCluster
Properties: 
  AssociatedRoles: 
    - DBClusterRole
  AvailabilityZones: 
    - String
  BacktrackWindow: Long
  BackupRetentionPeriod: Integer
  CopyTagsToSnapshot: Boolean
  DatabaseName: String
  DBClusterIdentifier: String
  DBClusterParameterGroupName: String
  DBSubnetGroupName: String
  DeletionProtection: Boolean
  EnableCloudwatchLogsExports: 
    - String
  EnableHttpEndpoint: Boolean
  EnableIAMDatabaseAuthentication: Boolean
  Engine: String
  EngineMode: String
  EngineVersion: String
  GlobalClusterIdentifier: String
  KmsKeyId: String
  MasterUsername: String
  MasterUserPassword: String
  Port: Integer
  PreferredBackupWindow: String
  PreferredMaintenanceWindow: String
  ReplicationSourceIdentifier: String
  RestoreType: String
  ScalingConfiguration: 
    ScalingConfiguration
  SnapshotIdentifier: String
  SourceDBClusterIdentifier: String
  SourceRegion: String
  StorageEncrypted: Boolean
  Tags: 
    - Tag
  UseLatestRestorableTime: Boolean
  VpcSecurityGroupIds: 
    - String

Properties

AssociatedRoles

Provides a list of the AWS Identity and Access Management (IAM) roles that are associated with the DB cluster. IAM roles that are associated with a DB cluster grant permission for the DB cluster to access other Amazon Web Services on your behalf.

Required: No

Type: List of DBClusterRole

Update requires: No interruption

AvailabilityZones

A list of Availability Zones (AZs) where DB instances in the DB cluster can be created.

For information on AWS Regions and Availability Zones, see Choosing the Regions and Availability Zones in the Amazon Aurora User Guide.

Valid for: Aurora DB clusters only

Required: No

Type: List of String

Update requires: Replacement

BacktrackWindow

The target backtrack window, in seconds. To disable backtracking, set this value to 0.

Default: 0

Constraints:

• If specified, this value must be set to a number from 0 to 259,200 (72 hours).

Valid for: Aurora MySQL DB clusters only

Required: No

Type: Long

Update requires: No interruption

BackupRetentionPeriod

The number of days for which automated backups are retained.

Default: 1

Constraints:

• Must be a value from 1 to 35

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: No

Type: Integer

Update requires: No interruption

CopyTagsToSnapshot

A value that indicates whether to copy all tags from the DB cluster to snapshots of the DB cluster. The default is not to copy them.

Valid for: Aurora DB clusters only

Required: No

Type: Boolean

Update requires: No interruption

DatabaseName

The name of your database. If you don't provide a name, then Amazon RDS won't create a database in this DB cluster. For naming constraints, see Naming Constraints in the Amazon RDS User Guide.

Required: No

Type: String

Update requires: Replacement

DBClusterIdentifier

The DB cluster identifier. This parameter is stored as a lowercase string.

Constraints:

• Must contain from 1 to 63 letters, numbers, or hyphens.

• First character must be a letter.

• Can't end with a hyphen or contain two consecutive hyphens.

Example: my-cluster1

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: No

Type: String

Update requires: Replacement

DBClusterParameterGroupName

The name of the DB cluster parameter group to associate with this DB cluster.

Important

If you apply a parameter group to an existing DB cluster, then its DB instances might need to reboot. This can result in an outage while the DB instances are rebooting.

If you apply a change to parameter group associated with a stopped DB cluster, then the update stack waits until the DB cluster is started.

To list all of the available DB cluster parameter group names, use the following command:

aws rds describe-db-cluster-parameter-groups --query "DBClusterParameterGroups[].DBClusterParameterGroupName" --output text

Required: No

Type: String

Update requires: No interruption

DBSubnetGroupName

A DB subnet group that you want to associate with this DB cluster.

If you are restoring a DB cluster to a point in time with RestoreType set to copy-on-write, and don't specify a DB subnet group name, then the DB cluster is restored with a default DB subnet group.

Required: No

Type: String

Update requires: Replacement

DeletionProtection

A value that indicates whether the DB cluster has deletion protection enabled. The database can't be deleted when deletion protection is enabled. By default, deletion protection isn't enabled.

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: No

Type: Boolean

Update requires: No interruption

EnableCloudwatchLogsExports

The list of log types that need to be enabled for exporting to CloudWatch Logs. The values in the list depend on the DB engine being used. For more information, see Publishing Database Logs to Amazon CloudWatch Logs in the Amazon Aurora User Guide.

Aurora MySQL

Valid values: audit, error, general, slowquery

Aurora PostgreSQL

Valid values: postgresql

Required: No

Type: List of String

Update requires: No interruption

EnableHttpEndpoint

A value that indicates whether to enable the HTTP endpoint for an Aurora Serverless DB cluster. By default, the HTTP endpoint is disabled.

When enabled, the HTTP endpoint provides a connectionless web service API for running SQL queries on the Aurora Serverless DB cluster. You can also query your database from inside the RDS console with the query editor.

For more information, see Using the Data API for Aurora Serverless in the Amazon Aurora User Guide.

Valid for: Aurora DB clusters only

Required: No

Type: Boolean

Update requires: No interruption

EnableIAMDatabaseAuthentication

A value that indicates whether to enable mapping of AWS Identity and Access Management (IAM) accounts to database accounts. By default, mapping isn't enabled.

For more information, see IAM Database Authentication in the Amazon Aurora User Guide.

Valid for: Aurora DB clusters only

Required: No

Type: Boolean

Update requires: No interruption

Engine

The name of the database engine to be used for this DB cluster.

Valid Values:

• aurora (for MySQL 5.6-compatible Aurora)

• aurora-mysql (for MySQL 5.7-compatible Aurora)

• aurora-postgresql

• mysql

• postgres

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: Yes

Type: String

Update requires: Some interruptions

EngineMode

The DB engine mode of the DB cluster, either provisioned, serverless, parallelquery, global, or multimaster.

The parallelquery engine mode isn't required for Aurora MySQL version 1.23 and higher 1.x versions, and version 2.09 and higher 2.x versions.

The global engine mode isn't required for Aurora MySQL version 1.22 and higher 1.x versions, and global engine mode isn't required for any 2.x versions.

The multimaster engine mode only applies for DB clusters created with Aurora MySQL version 5.6.10a.

For Aurora PostgreSQL, the global engine mode isn't required, and both the parallelquery and the multimaster engine modes currently aren't supported.

Limitations and requirements apply to some DB engine modes. For more information, see the following sections in the Amazon Aurora User Guide:

• Limitations of Aurora Serverless

• Limitations of Parallel Query

• Limitations of Aurora Global Databases

• Limitations of Multi-Master Clusters

Valid for: Aurora DB clusters only

Required: No

Type: String

Update requires: Replacement

EngineVersion

The version number of the database engine to use.

To list all of the available engine versions for aurora (for MySQL 5.6-compatible Aurora), use the following command:

aws rds describe-db-engine-versions --engine aurora --query "DBEngineVersions[].EngineVersion"

To list all of the available engine versions for aurora-mysql (for MySQL 5.7-compatible Aurora), use the following command:

aws rds describe-db-engine-versions --engine aurora-mysql --query "DBEngineVersions[].EngineVersion"

To list all of the available engine versions for aurora-postgresql, use the following command:

aws rds describe-db-engine-versions --engine aurora-postgresql --query "DBEngineVersions[].EngineVersion"

Required: No

Type: String

Update requires: Some interruptions

GlobalClusterIdentifier

If you are configuring an Aurora global database cluster and want your Aurora DB cluster to be a secondary member in the global database cluster, specify the global cluster ID of the global database cluster. To define the primary database cluster of the global cluster, use the AWS::RDS::GlobalCluster resource.

If you aren't configuring a global database cluster, don't specify this property.

Note

To remove the DB cluster from a global database cluster, specify an empty value for the GlobalClusterIdentifier property.

For information about Aurora global databases, see Working with Amazon Aurora Global Databases in the Amazon Aurora User Guide.

Required: No

Type: String

Update requires: Some interruptions

KmsKeyId

The Amazon Resource Name (ARN) of the AWS Key Management Service master key that is used to encrypt the database instances in the DB cluster, such as arn:aws:kms:us-east-1:012345678910:key/abcd1234-a123-456a-a12b-a123b4cd56ef. If you enable the StorageEncrypted property but don't specify this property, the default master key is used. If you specify this property, you must set the StorageEncrypted property to true.

If you specify the SnapshotIdentifier property, the StorageEncrypted property value is inherited from the snapshot, and if the DB cluster is encrypted, the specified KmsKeyId property is used.

Required: No

Type: String

Update requires: Replacement

MasterUsername

The name of the master user for the DB cluster.

Note

If you specify the SourceDBClusterIdentifier or SnapshotIdentifier property, don't specify this property. The value is inherited from the source DB instance or snapshot.

Required: Conditional

Type: String

Update requires: Replacement

MasterUserPassword

The master password for the DB instance.

Note

If you specify the SourceDBClusterIdentifier or SnapshotIdentifier property, don't specify this property. The value is inherited from the source DB instance or snapshot.

Required: Conditional

Type: String

Update requires: No interruption

Port

The port number on which the DB instances in the DB cluster accept connections.

Default:

• When EngineMode is provisioned, 3306 (for both Aurora MySQL and Aurora PostgreSQL)

• When EngineMode is serverless:

  • 3306 when Engine is aurora or aurora-mysql

  • 5432 when Engine is aurora-postgresql

Required: No

Type: Integer

Update requires: No interruption

PreferredBackupWindow

The daily time range during which automated backups are created. For more information, see Backup Window in the Amazon Aurora User Guide.

Constraints:

• Must be in the format hh24:mi-hh24:mi.

• Must be in Universal Coordinated Time (UTC).

• Must not conflict with the preferred maintenance window.

• Must be at least 30 minutes.

Required: No

Type: String

Update requires: No interruption

PreferredMaintenanceWindow

The weekly time range during which system maintenance can occur, in Universal Coordinated Time (UTC).

Format: ddd:hh24:mi-ddd:hh24:mi

The default is a 30-minute window selected at random from an 8-hour block of time for each AWS Region, occurring on a random day of the week. To see the time blocks available, see Adjusting the Preferred DB Cluster Maintenance Window in the Amazon Aurora User Guide.

Valid Days: Mon, Tue, Wed, Thu, Fri, Sat, Sun.

Constraints: Minimum 30-minute window.

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: No

Type: String

Update requires: No interruption

ReplicationSourceIdentifier

The Amazon Resource Name (ARN) of the source DB instance or DB cluster if this DB cluster is created as a read replica.

Valid for: Aurora DB clusters only

Required: No

Type: String

Update requires: No interruption

RestoreType

The type of restore to be performed. You can specify one of the following values:

• full-copy - The new DB cluster is restored as a full copy of the source DB cluster.

• copy-on-write - The new DB cluster is restored as a clone of the source DB cluster.

Constraints: You can't specify copy-on-write if the engine version of the source DB cluster is earlier than 1.11.

If you don't specify a RestoreType value, then the new DB cluster is restored as a full copy of the source DB cluster.

Valid for: Aurora DB clusters and Multi-AZ DB clusters

Required: No

Type: String

Update requires: Replacement

ScalingConfiguration

The ScalingConfiguration property type specifies the scaling configuration of an Aurora Serverless DB cluster.

Required: No

Type: ScalingConfiguration

Update requires: No interruption

SnapshotIdentifier

The identifier for the DB snapshot or DB cluster snapshot to restore from.

You can use either the name or the Amazon Resource Name (ARN) to specify a DB cluster snapshot. However, you can use only the ARN to specify a DB snapshot.

After you restore a DB cluster with a SnapshotIdentifier property, you must specify the same SnapshotIdentifier property for any future updates to the DB cluster. When you specify this property for an update, the DB cluster is not restored from the snapshot again, and the data in the database is not changed. However, if you don't specify the SnapshotIdentifier property, an empty DB cluster is created, and the original DB cluster is deleted. If you specify a property that is different from the previous snapshot restore property, a new DB cluster is restored from the specified SnapshotIdentifier property, and the original DB cluster is deleted.

If you specify the SnapshotIdentifier property to restore a DB cluster (as opposed to specifying it for DB cluster updates), then don't specify the following properties:

• GlobalClusterIdentifier

• MasterUsername

• ReplicationSourceIdentifier

• RestoreType

• SourceDBClusterIdentifier

• SourceRegion

• StorageEncrypted

• UseLatestRestorableTime

Constraints:

• Must match the identifier of an existing Snapshot.

Required: No

Type: String

Update requires: Replacement

SourceDBClusterIdentifier

When restoring a DB cluster to a point in time, the identifier of the source DB cluster from which to restore.

Constraints:

• Must match the identifier of an existing DBCluster.

Required: No

Type: String

Update requires: Replacement

SourceRegion

The AWS Region which contains the source DB cluster when replicating a DB cluster. For example, us-east-1.

Required: No

Type: String

Update requires: Replacement

StorageEncrypted

Indicates whether the DB cluster is encrypted.

If you specify the KmsKeyId property, then you must enable encryption.

If you specify the SnapshotIdentifier or SourceDBClusterIdentifier property, don't specify this property. The value is inherited from the snapshot or source DB cluster, and if the DB cluster is encrypted, the specified KmsKeyId property is used.

Required: No

Type: Boolean

Update requires: Replacement

Tags

Tags to assign to the DB cluster.

Required: No

Type: List of Tag

Update requires: No interruption

UseLatestRestorableTime

A value that indicates whether to restore the DB cluster to the latest restorable backup time. By default, the DB cluster is not restored to the latest restorable backup time.

Required: No

Type: Boolean

Update requires: Replacement

VpcSecurityGroupIds

A list of EC2 VPC security groups to associate with this DB cluster.

If you plan to update the resource, don't specify VPC security groups in a shared VPC.

Required: No

Type: List of String

Update requires: No interruption

Return values

Ref

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the name of the DB cluster.

For more information about using the Ref function, see Ref.

Fn::GetAtt

The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.

Endpoint.Address

The connection endpoint for the DB cluster. For example: mystack-mydbcluster-123456789012.us-east-2.rds.amazonaws.com

Endpoint.Port

The port number that will accept connections on this DB cluster. For example: 3306

ReadEndpoint.Address

The reader endpoint for the DB cluster. For example: mystack-mydbcluster-ro-123456789012.us-east-2.rds.amazonaws.com

Examples

The following examples create DB clusters.

Note

For an example that adds a scaling policy for a DB cluster with Application Auto Scaling, see Declaring a scaling policy for an Aurora DB cluster.

Creating an Amazon Aurora DB cluster with two DB instances

The following example creates an Amazon Aurora DB cluster and adds two DB instances to it. Because Amazon RDS automatically assigns a writer and reader DB instances in the cluster, use the cluster endpoint to read and write data, not the individual DB instance endpoints.

Note

The example uses the time_zone Aurora MySQL parameter. For Aurora PostgreSQL, use the timezone parameter instead.

JSON

{
    "RDSCluster": {
        "Type": "AWS::RDS::DBCluster",
        "Properties": {
            "MasterUsername": {
                "Ref": "username"
            },
            "MasterUserPassword": {
                "Ref": "password"
            },
            "Engine": "aurora",
            "DBSubnetGroupName": {
                "Ref": "DBSubnetGroup"
            },
            "DBClusterParameterGroupName": {
                "Ref": "RDSDBClusterParameterGroup"
            }
        }
    },
    "RDSDBInstance1": {
        "Type": "AWS::RDS::DBInstance",
        "Properties": {
            "DBSubnetGroupName": {
                "Ref": "DBSubnetGroup"
            },
            "DBParameterGroupName": {
                "Ref": "RDSDBParameterGroup"
            },
            "Engine": "aurora",
            "DBClusterIdentifier": {
                "Ref": "RDSCluster"
            },
            "PubliclyAccessible": "true",
            "AvailabilityZone": {
                "Fn::GetAtt": [
                    "Subnet1",
                    "AvailabilityZone"
                ]
            },
            "DBInstanceClass": "db.r3.xlarge"
        }
    },
    "RDSDBInstance2": {
        "Type": "AWS::RDS::DBInstance",
        "Properties": {
            "DBSubnetGroupName": {
                "Ref": "DBSubnetGroup"
            },
            "DBParameterGroupName": {
                "Ref": "RDSDBParameterGroup"
            },
            "Engine": "aurora",
            "DBClusterIdentifier": {
                "Ref": "RDSCluster"
            },
            "PubliclyAccessible": "true",
            "AvailabilityZone": {
                "Fn::GetAtt": [
                    "Subnet2",
                    "AvailabilityZone"
                ]
            },
            "DBInstanceClass": "db.r3.xlarge"
        }
    },
    "RDSDBClusterParameterGroup": {
        "Type": "AWS::RDS::DBClusterParameterGroup",
        "Properties": {
            "Description": "CloudFormation Sample Aurora Cluster Parameter Group",
            "Family": "aurora5.6",
            "Parameters": {
                "time_zone": "US/Eastern"
            }
        }
    },
    "RDSDBParameterGroup": {
        "Type": "AWS::RDS::DBParameterGroup",
        "Properties": {
            "Description": "CloudFormation Sample Aurora Parameter Group",
            "Family": "aurora5.6",
            "Parameters": {
                "sql_mode": "IGNORE_SPACE",
                "max_allowed_packet": 1024,
                "innodb_buffer_pool_size": "{DBInstanceClassMemory*3/4}"
            }
        }
    }
}

YAML

RDSCluster: 
  Properties: 
    DBClusterParameterGroupName: 
      Ref: RDSDBClusterParameterGroup
    DBSubnetGroupName: 
      Ref: DBSubnetGroup
    Engine: aurora
    MasterUserPassword: 
      Ref: password
    MasterUsername: 
      Ref: username
  Type: "AWS::RDS::DBCluster"
RDSDBClusterParameterGroup: 
  Properties: 
    Description: "CloudFormation Sample Aurora Cluster Parameter Group"
    Family: aurora5.6
    Parameters: 
      time_zone: US/Eastern
  Type: "AWS::RDS::DBClusterParameterGroup"
RDSDBInstance1: 
  Properties: 
    AvailabilityZone: 
      Fn::GetAtt:
        - Subnet1
        - AvailabilityZone
    DBClusterIdentifier: 
      Ref: RDSCluster
    DBInstanceClass: db.r3.xlarge
    DBParameterGroupName: 
      Ref: RDSDBParameterGroup
    DBSubnetGroupName: 
      Ref: DBSubnetGroup
    Engine: aurora
    PubliclyAccessible: "true"
  Type: "AWS::RDS::DBInstance"
RDSDBInstance2: 
  Properties: 
    AvailabilityZone: 
      Fn::GetAtt:
        - Subnet2
        - AvailabilityZone
    DBClusterIdentifier: 
      Ref: RDSCluster
    DBInstanceClass: db.r3.xlarge
    DBParameterGroupName: 
      Ref: RDSDBParameterGroup
    DBSubnetGroupName: 
      Ref: DBSubnetGroup
    Engine: aurora
    PubliclyAccessible: "true"
  Type: "AWS::RDS::DBInstance"
RDSDBParameterGroup:
  Type: 'AWS::RDS::DBParameterGroup'
  Properties:
    Description: CloudFormation Sample Aurora Parameter Group
    Family: aurora5.6
    Parameters:
      sql_mode: IGNORE_SPACE
      max_allowed_packet: 1024
      innodb_buffer_pool_size: '{DBInstanceClassMemory*3/4}'

Creating an Amazon Aurora DB cluster that exports logs to Amazon CloudWatch Logs

The following example creates an Amazon Aurora PostgreSQL DB cluster that exports logs to Amazon CloudWatch Logs. For more information about exporting Aurora DB cluster logs to Amazon CloudWatch Logs, see Publishing Database Logs to Amazon CloudWatch Logs in the Amazon Aurora User Guide.

JSON

{
  "AWSTemplateFormatVersion" : "2010-09-09",


  "Description" : "AWS CloudFormation Sample Template for sending Aurora DB cluster logs to CloudWatch Logs: Sample template showing how to create an Aurora PostgreSQL DB cluster that exports logs to CloudWatch Logs. **WARNING** This template enables log exports to CloudWatch Logs. You will be billed for the AWS resources used if you create a stack from this template.",


  "Parameters" : {
      "DBUsername" : {
        "NoEcho" : "true",
        "Description" : "Username for PostgreSQL database access",

        "Type" : "String",
        "MinLength" : "1",
        "MaxLength" : "16",
        "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
        "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
      },
      "DBPassword" : {
        "NoEcho" : "true",
        "Description" : "Password for PostgreSQL database access",

        "Type" : "String",
        "MinLength" : "8",

        "MaxLength" : "41",
        "AllowedPattern" : "[a-zA-Z0-9]*",
        "ConstraintDescription" : "must contain only alphanumeric characters."
      }
  },

  "Resources" : {
      "RDSCluster" : {
          "Type": "AWS::RDS::DBCluster",
          "Properties" : {
              "MasterUsername" : {
                  "Ref" : "DBUsername"
              },
              "MasterUserPassword" : {
                  "Ref" : "DBPassword"
              },
              "DBClusterIdentifier" : "aurora-postgresql-cluster",
              "Engine" : "aurora-postgresql",
              "EngineVersion" : "10.7",
              "DBClusterParameterGroupName" : "default.aurora-postgresql10",
              "EnableCloudwatchLogsExports" : ["postgresql"]
          }
      },
  "RDSDBInstance1": {
        "Type" : "AWS::RDS::DBInstance",
        "Properties" : {
            "DBInstanceIdentifier" : "aurora-postgresql-instance1",
            "Engine" : "aurora-postgresql",
            "DBClusterIdentifier" : {
                "Ref" : "RDSCluster"
            },
            "PubliclyAccessible" : "true",
            "DBInstanceClass" : "db.r4.large"
        }
    },
  "RDSDBInstance2": {
        "Type" : "AWS::RDS::DBInstance",
        "Properties" : {
            "DBInstanceIdentifier" : "aurora-postgresql-instance2",
            "Engine" : "aurora-postgresql",
            "DBClusterIdentifier" : {
                "Ref" : "RDSCluster"
            },
            "PubliclyAccessible" : "true",
            "DBInstanceClass" : "db.r4.large"
        }
    },
  }
}

YAML

AWSTemplateFormatVersion: 2010-09-09
Description: >-
  AWS CloudFormation Sample Template for sending Aurora DB cluster logs to
  CloudWatch Logs: Sample template showing how to create an Aurora PostgreSQL DB
  cluster that exports logs to CloudWatch Logs. **WARNING** This template
  enables log exports to CloudWatch Logs. You will be billed for the AWS
  resources used if you create a stack from this template.
Parameters:
  DBUsername:
    NoEcho: 'true'
    Description: Username for PostgreSQL database access
    Type: String
    MinLength: '1'
    MaxLength: '16'
    AllowedPattern: '[a-zA-Z][a-zA-Z0-9]*'
    ConstraintDescription: must begin with a letter and contain only alphanumeric characters.
  DBPassword:
    NoEcho: 'true'
    Description: Password for PostgreSQL database access
    Type: String
    MinLength: '8'
    MaxLength: '41'
    AllowedPattern: '[a-zA-Z0-9]*'
    ConstraintDescription: must contain only alphanumeric characters.
Resources:
  RDSCluster:
    Type: 'AWS::RDS::DBCluster'
    Properties:
      MasterUsername: !Ref DBUsername
      MasterUserPassword: !Ref DBPassword
      DBClusterIdentifier: aurora-postgresql-cluster
      Engine: aurora-postgresql
      EngineVersion: '10.7'
      DBClusterParameterGroupName: default.aurora-postgresql10
      EnableCloudwatchLogsExports:
        - postgresql
  RDSDBInstance1:
    Type: 'AWS::RDS::DBInstance'
    Properties:
      DBInstanceIdentifier: aurora-postgresql-instance1
      Engine: aurora-postgresql
      DBClusterIdentifier: !Ref RDSCluster
      PubliclyAccessible: 'true'
      DBInstanceClass: db.r4.large
  RDSDBInstance2:
    Type: 'AWS::RDS::DBInstance'
    Properties:
      DBInstanceIdentifier: aurora-postgresql-instance2
      Engine: aurora-postgresql
      DBClusterIdentifier: !Ref RDSCluster
      PubliclyAccessible: 'true'
      DBInstanceClass: db.r4.large

Creating an Amazon Aurora Serverless DB cluster

The following example creates an Amazon Aurora Serverless DB cluster. An Aurora Serverless DB cluster is a DB cluster that automatically starts up, shuts down, and scales up or down its compute capacity based on your application's needs. For more information about Aurora Serverless DB clusters, see Using Amazon Aurora Serverless in the Amazon Aurora User Guide.

Note

This example creates an Aurora MySQL Serverless DB cluster by setting Engine to aurora and EngineVersion to 5.6.10a. To create an Aurora PostgreSQL Serverless DB cluster, set Engine to aurora-postgresql and EngineVersion to 10.7.

JSON

{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "AWS CloudFormation Sample Template AuroraServerlessDBCluster: Sample template showing how to create an Amazon Aurora Serverless DB cluster. **WARNING** This template creates an Amazon Aurora DB cluster. You will be billed for the AWS resources used if you create a stack from this template.",

  "Parameters" : {
      "DBUsername" : {
        "NoEcho" : "true",
        "Description" : "Username for MySQL database access",
        "Type" : "String",
        "MinLength" : "1",
        "MaxLength" : "16",
        "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
        "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
      },
      "DBPassword" : {
        "NoEcho" : "true",
        "Description" : "Password MySQL database access",
        "Type" : "String",
        "MinLength" : "8",
        "MaxLength" : "41",
        "AllowedPattern" : "[a-zA-Z0-9]*",
        "ConstraintDescription" : "must contain only alphanumeric characters."
      }
  },
  "Resources" : {
      "RDSCluster" : {
          "Type": "AWS::RDS::DBCluster",
          "Properties" : {
              "MasterUsername" : {
                  "Ref": "DBUsername"
              },
              "MasterUserPassword" : {
                  "Ref": "DBPassword"
              },
              "DBClusterIdentifier" : "my-serverless-cluster",
              "Engine" : "aurora",
              "EngineVersion" : "5.6.10a",
              "EngineMode" : "serverless",
              "ScalingConfiguration" : {
                  "AutoPause" : true,
                  "MinCapacity" : 4,
                  "MaxCapacity" : 32,
                  "SecondsUntilAutoPause" : 1000
              }
          }
      }
  }
}

YAML

AWSTemplateFormatVersion: 2010-09-09
Description: >-
  AWS CloudFormation Sample Template AuroraServerlessDBCluster: Sample template
  showing how to create an Amazon Aurora Serverless DB cluster. **WARNING** This
  template creates an Amazon Aurora DB cluster. You will be billed for the AWS
  resources used if you create a stack from this template.
Parameters:
  DBUsername:
    NoEcho: 'true'
    Description: Username for MySQL database access
    Type: String
    MinLength: '1'
    MaxLength: '16'
    AllowedPattern: '[a-zA-Z][a-zA-Z0-9]*'
    ConstraintDescription: must begin with a letter and contain only alphanumeric characters.
  DBPassword:
    NoEcho: 'true'
    Description: Password MySQL database access
    Type: String
    MinLength: '8'
    MaxLength: '41'
    AllowedPattern: '[a-zA-Z0-9]*'
    ConstraintDescription: must contain only alphanumeric characters.
Resources:
  RDSCluster:
    Type: 'AWS::RDS::DBCluster'
    Properties:
      MasterUsername: !Ref DBUsername
      MasterUserPassword: !Ref DBPassword
      DBClusterIdentifier: my-serverless-cluster
      Engine: aurora
      EngineVersion: 5.6.10a
      EngineMode: serverless
      ScalingConfiguration:
        AutoPause: true
        MinCapacity: 4
        MaxCapacity: 32
        SecondsUntilAutoPause: 1000