RDS / Client / failover_db_cluster

failover_db_cluster

RDS.Client.failover_db_cluster(**kwargs)

Forces a failover for a DB cluster.

For an Aurora DB cluster, failover for a DB cluster promotes one of the Aurora Replicas (read-only instances) in the DB cluster to be the primary DB instance (the cluster writer).

For a Multi-AZ DB cluster, failover for a DB cluster promotes one of the readable standby DB instances (read-only instances) in the DB cluster to be the primary DB instance (the cluster writer).

An Amazon Aurora DB cluster automatically fails over to an Aurora Replica, if one exists, when the primary DB instance fails. A Multi-AZ DB cluster automatically fails over to a readable standby DB instance when the primary DB instance fails.

To simulate a failure of a primary instance for testing, you can force a failover. Because each instance in a DB cluster has its own endpoint address, make sure to clean up and re-establish any existing connections that use those endpoint addresses when the failover is complete.

For more information on Amazon Aurora DB clusters, see What is Amazon Aurora? in the Amazon Aurora User Guide.

For more information on Multi-AZ DB clusters, see Multi-AZ DB cluster deployments in the Amazon RDS User Guide.

See also: AWS API Documentation

Request Syntax

response = client.failover_db_cluster(
    DBClusterIdentifier='string',
    TargetDBInstanceIdentifier='string'
)

Parameters:

• DBClusterIdentifier (string) –

  [REQUIRED]

  A DB cluster identifier to force a failover for. This parameter isn’t case-sensitive.

  Constraints:

  • Must match the identifier of an existing DBCluster.

• TargetDBInstanceIdentifier (string) –

  The name of the DB instance to promote to the primary DB instance.

  Specify the DB instance identifier for an Aurora Replica or a Multi-AZ readable standby in the DB cluster, for example mydbcluster-replica1.

  This setting isn’t supported for RDS for MySQL Multi-AZ DB clusters.

Return type:

dict

Returns:

Response Syntax

{
    'DBCluster': {
        'AllocatedStorage': 123,
        'AvailabilityZones': [
            'string',
        ],
        'BackupRetentionPeriod': 123,
        'CharacterSetName': 'string',
        'DatabaseName': 'string',
        'DBClusterIdentifier': 'string',
        'DBClusterParameterGroup': 'string',
        'DBSubnetGroup': 'string',
        'Status': 'string',
        'AutomaticRestartTime': datetime(2015, 1, 1),
        'PercentProgress': 'string',
        'EarliestRestorableTime': datetime(2015, 1, 1),
        'Endpoint': 'string',
        'ReaderEndpoint': 'string',
        'CustomEndpoints': [
            'string',
        ],
        'MultiAZ': True|False,
        'Engine': 'string',
        'EngineVersion': 'string',
        'LatestRestorableTime': datetime(2015, 1, 1),
        'Port': 123,
        'MasterUsername': 'string',
        'DBClusterOptionGroupMemberships': [
            {
                'DBClusterOptionGroupName': 'string',
                'Status': 'string'
            },
        ],
        'PreferredBackupWindow': 'string',
        'PreferredMaintenanceWindow': 'string',
        'ReplicationSourceIdentifier': 'string',
        'ReadReplicaIdentifiers': [
            'string',
        ],
        'DBClusterMembers': [
            {
                'DBInstanceIdentifier': 'string',
                'IsClusterWriter': True|False,
                'DBClusterParameterGroupStatus': 'string',
                'PromotionTier': 123
            },
        ],
        'VpcSecurityGroups': [
            {
                'VpcSecurityGroupId': 'string',
                'Status': 'string'
            },
        ],
        'HostedZoneId': 'string',
        'StorageEncrypted': True|False,
        'KmsKeyId': 'string',
        'DbClusterResourceId': 'string',
        'DBClusterArn': 'string',
        'AssociatedRoles': [
            {
                'RoleArn': 'string',
                'Status': 'string',
                'FeatureName': 'string'
            },
        ],
        'IAMDatabaseAuthenticationEnabled': True|False,
        'CloneGroupId': 'string',
        'ClusterCreateTime': datetime(2015, 1, 1),
        'EarliestBacktrackTime': datetime(2015, 1, 1),
        'BacktrackWindow': 123,
        'BacktrackConsumedChangeRecords': 123,
        'EnabledCloudwatchLogsExports': [
            'string',
        ],
        'Capacity': 123,
        'EngineMode': 'string',
        'ScalingConfigurationInfo': {
            'MinCapacity': 123,
            'MaxCapacity': 123,
            'AutoPause': True|False,
            'SecondsUntilAutoPause': 123,
            'TimeoutAction': 'string',
            'SecondsBeforeTimeout': 123
        },
        'DeletionProtection': True|False,
        'HttpEndpointEnabled': True|False,
        'ActivityStreamMode': 'sync'|'async',
        'ActivityStreamStatus': 'stopped'|'starting'|'started'|'stopping',
        'ActivityStreamKmsKeyId': 'string',
        'ActivityStreamKinesisStreamName': 'string',
        'CopyTagsToSnapshot': True|False,
        'CrossAccountClone': True|False,
        'DomainMemberships': [
            {
                'Domain': 'string',
                'Status': 'string',
                'FQDN': 'string',
                'IAMRoleName': 'string',
                'OU': 'string',
                'AuthSecretArn': 'string',
                'DnsIps': [
                    'string',
                ]
            },
        ],
        'TagList': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ],
        'GlobalWriteForwardingStatus': 'enabled'|'disabled'|'enabling'|'disabling'|'unknown',
        'GlobalWriteForwardingRequested': True|False,
        'PendingModifiedValues': {
            'PendingCloudwatchLogsExports': {
                'LogTypesToEnable': [
                    'string',
                ],
                'LogTypesToDisable': [
                    'string',
                ]
            },
            'DBClusterIdentifier': 'string',
            'MasterUserPassword': 'string',
            'IAMDatabaseAuthenticationEnabled': True|False,
            'EngineVersion': 'string',
            'BackupRetentionPeriod': 123,
            'AllocatedStorage': 123,
            'Iops': 123,
            'StorageType': 'string'
        },
        'DBClusterInstanceClass': 'string',
        'StorageType': 'string',
        'Iops': 123,
        'PubliclyAccessible': True|False,
        'AutoMinorVersionUpgrade': True|False,
        'MonitoringInterval': 123,
        'MonitoringRoleArn': 'string',
        'PerformanceInsightsEnabled': True|False,
        'PerformanceInsightsKMSKeyId': 'string',
        'PerformanceInsightsRetentionPeriod': 123,
        'ServerlessV2ScalingConfiguration': {
            'MinCapacity': 123.0,
            'MaxCapacity': 123.0
        },
        'NetworkType': 'string',
        'DBSystemId': 'string',
        'MasterUserSecret': {
            'SecretArn': 'string',
            'SecretStatus': 'string',
            'KmsKeyId': 'string'
        },
        'IOOptimizedNextAllowedModificationTime': datetime(2015, 1, 1)
    }
}

Response Structure

• (dict) –

  • DBCluster (dict) –

    Contains the details of an Amazon Aurora DB cluster or Multi-AZ DB cluster.

    For an Amazon Aurora DB cluster, this data type is used as a response element in the operations CreateDBCluster, DeleteDBCluster, DescribeDBClusters, FailoverDBCluster, ModifyDBCluster, PromoteReadReplicaDBCluster, RestoreDBClusterFromS3, RestoreDBClusterFromSnapshot, RestoreDBClusterToPointInTime, StartDBCluster, and StopDBCluster.

    For a Multi-AZ DB cluster, this data type is used as a response element in the operations CreateDBCluster, DeleteDBCluster, DescribeDBClusters, FailoverDBCluster, ModifyDBCluster, RebootDBCluster, RestoreDBClusterFromSnapshot, and RestoreDBClusterToPointInTime.

    For more information on Amazon Aurora DB clusters, see What is Amazon Aurora? in the Amazon Aurora User Guide.

    For more information on Multi-AZ DB clusters, see Multi-AZ deployments with two readable standby DB instances in the Amazon RDS User Guide.

    • AllocatedStorage (integer) –

      For all database engines except Amazon Aurora, AllocatedStorage specifies the allocated storage size in gibibytes (GiB). For Aurora, AllocatedStorage always returns 1, because Aurora DB cluster storage size isn’t fixed, but instead automatically adjusts as needed.

    • AvailabilityZones (list) –

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

      • (string) –

    • BackupRetentionPeriod (integer) –

      The number of days for which automatic DB snapshots are retained.

    • CharacterSetName (string) –

      If present, specifies the name of the character set that this cluster is associated with.

    • DatabaseName (string) –

      The name of the initial database that was specified for the DB cluster when it was created, if one was provided. This same name is returned for the life of the DB cluster.

    • DBClusterIdentifier (string) –

      The user-supplied identifier for the DB cluster. This identifier is the unique key that identifies a DB cluster.

    • DBClusterParameterGroup (string) –

      The name of the DB cluster parameter group for the DB cluster.

    • DBSubnetGroup (string) –

      Information about the subnet group associated with the DB cluster, including the name, description, and subnets in the subnet group.

    • Status (string) –

      The current state of this DB cluster.

    • AutomaticRestartTime (datetime) –

      The time when a stopped DB cluster is restarted automatically.

    • PercentProgress (string) –

      The progress of the operation as a percentage.

    • EarliestRestorableTime (datetime) –

      The earliest time to which a database can be restored with point-in-time restore.

    • Endpoint (string) –

      The connection endpoint for the primary instance of the DB cluster.

    • ReaderEndpoint (string) –

      The reader endpoint for the DB cluster. The reader endpoint for a DB cluster load-balances connections across the Aurora Replicas that are available in a DB cluster. As clients request new connections to the reader endpoint, Aurora distributes the connection requests among the Aurora Replicas in the DB cluster. This functionality can help balance your read workload across multiple Aurora Replicas in your DB cluster.

      If a failover occurs, and the Aurora Replica that you are connected to is promoted to be the primary instance, your connection is dropped. To continue sending your read workload to other Aurora Replicas in the cluster, you can then reconnect to the reader endpoint.

    • CustomEndpoints (list) –

      The custom endpoints associated with the DB cluster.

      • (string) –

    • MultiAZ (boolean) –

      Indicates whether the DB cluster has instances in multiple Availability Zones.

    • Engine (string) –

      The database engine used for this DB cluster.

    • EngineVersion (string) –

      The version of the database engine.

    • LatestRestorableTime (datetime) –

      The latest time to which a database can be restored with point-in-time restore.

    • Port (integer) –

      The port that the database engine is listening on.

    • MasterUsername (string) –

      The master username for the DB cluster.

    • DBClusterOptionGroupMemberships (list) –

      The list of option group memberships for this DB cluster.

      • (dict) –

        Contains status information for a DB cluster option group.

        • DBClusterOptionGroupName (string) –

          Specifies the name of the DB cluster option group.

        • Status (string) –

          Specifies the status of the DB cluster option group.

    • PreferredBackupWindow (string) –

      The daily time range during which automated backups are created if automated backups are enabled, as determined by the BackupRetentionPeriod.

    • PreferredMaintenanceWindow (string) –

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

    • ReplicationSourceIdentifier (string) –

      The identifier of the source DB cluster if this DB cluster is a read replica.

    • ReadReplicaIdentifiers (list) –

      Contains one or more identifiers of the read replicas associated with this DB cluster.

      • (string) –

    • DBClusterMembers (list) –

      The list of DB instances that make up the DB cluster.

      • (dict) –

        Contains information about an instance that is part of a DB cluster.

        • DBInstanceIdentifier (string) –

          Specifies the instance identifier for this member of the DB cluster.

        • IsClusterWriter (boolean) –

          Value that is true if the cluster member is the primary instance for the DB cluster and false otherwise.

        • DBClusterParameterGroupStatus (string) –

          Specifies the status of the DB cluster parameter group for this member of the DB cluster.

        • PromotionTier (integer) –

          A value that specifies the order in which an Aurora Replica is promoted to the primary instance after a failure of the existing primary instance. For more information, see Fault Tolerance for an Aurora DB Cluster in the Amazon Aurora User Guide.

    • VpcSecurityGroups (list) –

      The list of VPC security groups that the DB cluster belongs to.

      • (dict) –

        This data type is used as a response element for queries on VPC security group membership.

        • VpcSecurityGroupId (string) –

          The name of the VPC security group.

        • Status (string) –

          The membership status of the VPC security group.

          Currently, the only valid status is active.

    • HostedZoneId (string) –

      The ID that Amazon Route 53 assigns when you create a hosted zone.

    • StorageEncrypted (boolean) –

      Indicates whether the DB cluster is encrypted.

    • KmsKeyId (string) –

      If StorageEncrypted is enabled, the Amazon Web Services KMS key identifier for the encrypted DB cluster.

      The Amazon Web Services KMS key identifier is the key ARN, key ID, alias ARN, or alias name for the KMS key.

    • DbClusterResourceId (string) –

      The Amazon Web Services Region-unique, immutable identifier for the DB cluster. This identifier is found in Amazon Web Services CloudTrail log entries whenever the KMS key for the DB cluster is accessed.

    • DBClusterArn (string) –

      The Amazon Resource Name (ARN) for the DB cluster.

    • AssociatedRoles (list) –

      A list of the Amazon Web Services 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.

      • (dict) –

        Describes an Amazon Web Services Identity and Access Management (IAM) role that is associated with a DB cluster.

        • RoleArn (string) –

          The Amazon Resource Name (ARN) of the IAM role that is associated with the DB cluster.

        • Status (string) –

          Describes the state of association between the IAM role and the DB cluster. The Status property returns one of the following values:

          • ACTIVE - the IAM role ARN is associated with the DB cluster and can be used to access other Amazon Web Services on your behalf.

          • PENDING - the IAM role ARN is being associated with the DB cluster.

          • INVALID - the IAM role ARN is associated with the DB cluster, but the DB cluster is unable to assume the IAM role in order to access other Amazon Web Services on your behalf.

        • FeatureName (string) –

          The name of the feature associated with the Amazon Web Services Identity and Access Management (IAM) role. For information about supported feature names, see DBEngineVersion.

    • IAMDatabaseAuthenticationEnabled (boolean) –

      Indicates whether the mapping of Amazon Web Services Identity and Access Management (IAM) accounts to database accounts is enabled.

    • CloneGroupId (string) –

      The ID of the clone group with which the DB cluster is associated.

    • ClusterCreateTime (datetime) –

      The time when the DB cluster was created, in Universal Coordinated Time (UTC).

    • EarliestBacktrackTime (datetime) –

      The earliest time to which a DB cluster can be backtracked.

    • BacktrackWindow (integer) –

      The target backtrack window, in seconds. If this value is set to 0, backtracking is disabled for the DB cluster. Otherwise, backtracking is enabled.

    • BacktrackConsumedChangeRecords (integer) –

      The number of change records stored for Backtrack.

    • EnabledCloudwatchLogsExports (list) –

      A list of log types that this DB cluster is configured to export to CloudWatch Logs.

      Log types vary by DB engine. For information about the log types for each DB engine, see Amazon RDS Database Log Files in the Amazon Aurora User Guide.

      • (string) –

    • Capacity (integer) –

      The current capacity of an Aurora Serverless v1 DB cluster. The capacity is 0 (zero) when the cluster is paused.

      For more information about Aurora Serverless v1, see Using Amazon Aurora Serverless v1 in the Amazon Aurora User Guide.

    • EngineMode (string) –

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

      For more information, see CreateDBCluster.

    • ScalingConfigurationInfo (dict) –

      The scaling configuration for an Aurora DB cluster in serverless DB engine mode.

      For more information, see Using Amazon Aurora Serverless v1 in the Amazon Aurora User Guide.

      • MinCapacity (integer) –

        The minimum capacity for an Aurora DB cluster in serverless DB engine mode.

      • MaxCapacity (integer) –

        The maximum capacity for an Aurora DB cluster in serverless DB engine mode.

      • AutoPause (boolean) –

        A value that indicates whether automatic pause is allowed for the Aurora DB cluster in serverless DB engine mode.

        When the value is set to false for an Aurora Serverless v1 DB cluster, the DB cluster automatically resumes.

      • SecondsUntilAutoPause (integer) –

        The remaining amount of time, in seconds, before the Aurora DB cluster in serverless mode is paused. A DB cluster can be paused only when it’s idle (it has no connections).

      • TimeoutAction (string) –

        The action that occurs when Aurora times out while attempting to change the capacity of an Aurora Serverless v1 cluster. The value is either ForceApplyCapacityChange or RollbackCapacityChange.

        ForceApplyCapacityChange, the default, sets the capacity to the specified value as soon as possible.

        RollbackCapacityChange ignores the capacity change if a scaling point isn’t found in the timeout period.

      • SecondsBeforeTimeout (integer) –

        The number of seconds before scaling times out. What happens when an attempted scaling action times out is determined by the TimeoutAction setting.

    • DeletionProtection (boolean) –

      Indicates whether the DB cluster has deletion protection enabled. The database can’t be deleted when deletion protection is enabled.

    • HttpEndpointEnabled (boolean) –

      Indicates whether the HTTP endpoint for an Aurora Serverless v1 DB cluster is enabled.

      When enabled, the HTTP endpoint provides a connectionless web service API for running SQL queries on the Aurora Serverless v1 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 v1 in the Amazon Aurora User Guide.

    • ActivityStreamMode (string) –

      The mode of the database activity stream. Database events such as a change or access generate an activity stream event. The database session can handle these events either synchronously or asynchronously.

    • ActivityStreamStatus (string) –

      The status of the database activity stream.

    • ActivityStreamKmsKeyId (string) –

      The Amazon Web Services KMS key identifier used for encrypting messages in the database activity stream.

      The Amazon Web Services KMS key identifier is the key ARN, key ID, alias ARN, or alias name for the KMS key.

    • ActivityStreamKinesisStreamName (string) –

      The name of the Amazon Kinesis data stream used for the database activity stream.

    • CopyTagsToSnapshot (boolean) –

      Indicates whether tags are copied from the DB cluster to snapshots of the DB cluster.

    • CrossAccountClone (boolean) –

      Indicates whether the DB cluster is a clone of a DB cluster owned by a different Amazon Web Services account.

    • DomainMemberships (list) –

      The Active Directory Domain membership records associated with the DB cluster.

      • (dict) –

        An Active Directory Domain membership record associated with the DB instance or cluster.

        • Domain (string) –

          The identifier of the Active Directory Domain.

        • Status (string) –

          The status of the Active Directory Domain membership for the DB instance or cluster. Values include joined, pending-join, failed, and so on.

        • FQDN (string) –

          The fully qualified domain name (FQDN) of the Active Directory Domain.

        • IAMRoleName (string) –

          The name of the IAM role used when making API calls to the Directory Service.

        • OU (string) –

          The Active Directory organizational unit for the DB instance or cluster.

        • AuthSecretArn (string) –

          The ARN for the Secrets Manager secret with the credentials for the user that’s a member of the domain.

        • DnsIps (list) –

          The IPv4 DNS IP addresses of the primary and secondary Active Directory domain controllers.

          • (string) –

    • TagList (list) –

      A list of tags. For more information, see Tagging Amazon RDS Resources in the Amazon RDS User Guide.

      • (dict) –

        Metadata assigned to an Amazon RDS resource consisting of a key-value pair.

        For more information, see Tagging Amazon RDS Resources in the Amazon RDS User Guide.

        • Key (string) –

          A key is the required name of the tag. The string value can be from 1 to 128 Unicode characters in length and can’t be prefixed with aws: or rds:. The string can only contain only the set of Unicode letters, digits, white-space, ‘_’, ‘.’, ‘:’, ‘/’, ‘=’, ‘+’, ‘-’, ‘@’ (Java regex: “^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$”).

        • Value (string) –

          A value is the optional value of the tag. The string value can be from 1 to 256 Unicode characters in length and can’t be prefixed with aws: or rds:. The string can only contain only the set of Unicode letters, digits, white-space, ‘_’, ‘.’, ‘:’, ‘/’, ‘=’, ‘+’, ‘-’, ‘@’ (Java regex: “^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$”).

    • GlobalWriteForwardingStatus (string) –

      The status of write forwarding for a secondary cluster in an Aurora global database.

    • GlobalWriteForwardingRequested (boolean) –

      Specifies whether write forwarding is enabled for a secondary cluster in an Aurora global database. Because write forwarding takes time to enable, check the value of GlobalWriteForwardingStatus to confirm that the request has completed before using the write forwarding feature for this cluster.

    • PendingModifiedValues (dict) –

      Information about pending changes to the DB cluster. This information is returned only when there are pending changes. Specific changes are identified by subelements.

      • PendingCloudwatchLogsExports (dict) –

        A list of the log types whose configuration is still pending. In other words, these log types are in the process of being activated or deactivated.

        • LogTypesToEnable (list) –

          Log types that are in the process of being deactivated. After they are deactivated, these log types aren’t exported to CloudWatch Logs.

          • (string) –

        • LogTypesToDisable (list) –

          Log types that are in the process of being enabled. After they are enabled, these log types are exported to CloudWatch Logs.

          • (string) –

      • DBClusterIdentifier (string) –

        The DBClusterIdentifier value for the DB cluster.

      • MasterUserPassword (string) –

        The master credentials for the DB cluster.

      • IAMDatabaseAuthenticationEnabled (boolean) –

        A value that indicates whether mapping of Amazon Web Services Identity and Access Management (IAM) accounts to database accounts is enabled.

      • EngineVersion (string) –

        The database engine version.

      • BackupRetentionPeriod (integer) –

        The number of days for which automatic DB snapshots are retained.

      • AllocatedStorage (integer) –

        The allocated storage size in gibibytes (GiB) for all database engines except Amazon Aurora. For Aurora, AllocatedStorage always returns 1, because Aurora DB cluster storage size isn’t fixed, but instead automatically adjusts as needed.

      • Iops (integer) –

        The Provisioned IOPS (I/O operations per second) value. This setting is only for non-Aurora Multi-AZ DB clusters.

      • StorageType (string) –

        The storage type for the DB cluster.

    • DBClusterInstanceClass (string) –

      The name of the compute and memory capacity class of the DB instance.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • StorageType (string) –

      The storage type associated with the DB cluster.

    • Iops (integer) –

      The Provisioned IOPS (I/O operations per second) value.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • PubliclyAccessible (boolean) –

      Indicates whether the DB cluster is publicly accessible.

      When the DB cluster is publicly accessible, its Domain Name System (DNS) endpoint resolves to the private IP address from within the DB cluster’s virtual private cloud (VPC). It resolves to the public IP address from outside of the DB cluster’s VPC. Access to the DB cluster is ultimately controlled by the security group it uses. That public access isn’t permitted if the security group assigned to the DB cluster doesn’t permit it.

      When the DB cluster isn’t publicly accessible, it is an internal DB cluster with a DNS name that resolves to a private IP address.

      For more information, see CreateDBCluster.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • AutoMinorVersionUpgrade (boolean) –

      Indicates whether minor version patches are applied automatically.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • MonitoringInterval (integer) –

      The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB cluster.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • MonitoringRoleArn (string) –

      The ARN for the IAM role that permits RDS to send Enhanced Monitoring metrics to Amazon CloudWatch Logs.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • PerformanceInsightsEnabled (boolean) –

      Indicates whether Performance Insights is enabled for the DB cluster.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • PerformanceInsightsKMSKeyId (string) –

      The Amazon Web Services KMS key identifier for encryption of Performance Insights data.

      The Amazon Web Services KMS key identifier is the key ARN, key ID, alias ARN, or alias name for the KMS key.

      This setting is only for non-Aurora Multi-AZ DB clusters.

    • PerformanceInsightsRetentionPeriod (integer) –

      The number of days to retain Performance Insights data.

      This setting is only for non-Aurora Multi-AZ DB clusters.

      Valid Values:

      • 7

      • month * 31, where month is a number of months from 1-23. Examples: 93 (3 months * 31), 341 (11 months * 31), 589 (19 months * 31)

      • 731

      Default: 7 days

    • ServerlessV2ScalingConfiguration (dict) –

      The scaling configuration for an Aurora Serverless v2 DB cluster.

      For more information, see Using Amazon Aurora Serverless v2 in the Amazon Aurora User Guide.

      • MinCapacity (float) –

        The minimum number of Aurora capacity units (ACUs) for a DB instance in an Aurora Serverless v2 cluster. You can specify ACU values in half-step increments, such as 8, 8.5, 9, and so on. The smallest value that you can use is 0.5.

      • MaxCapacity (float) –

        The maximum number of Aurora capacity units (ACUs) for a DB instance in an Aurora Serverless v2 cluster. You can specify ACU values in half-step increments, such as 40, 40.5, 41, and so on. The largest value that you can use is 128.

    • NetworkType (string) –

      The network type of the DB instance.

      The network type is determined by the DBSubnetGroup specified for the DB cluster. A DBSubnetGroup can support only the IPv4 protocol or the IPv4 and the IPv6 protocols ( DUAL).

      For more information, see Working with a DB instance in a VPC in the Amazon Aurora User Guide.

      This setting is only for Aurora DB clusters.

      Valid Values: IPV4 | DUAL

    • DBSystemId (string) –

      Reserved for future use.

    • MasterUserSecret (dict) –

      The secret managed by RDS in Amazon Web Services Secrets Manager for the master user password.

      For more information, see Password management with Amazon Web Services Secrets Manager in the Amazon RDS User Guide and Password management with Amazon Web Services Secrets Manager in the Amazon Aurora User Guide.

      • SecretArn (string) –

        The Amazon Resource Name (ARN) of the secret.

      • SecretStatus (string) –

        The status of the secret.

        The possible status values include the following:

        • creating - The secret is being created.

        • active - The secret is available for normal use and rotation.

        • rotating - The secret is being rotated.

        • impaired - The secret can be used to access database credentials, but it can’t be rotated. A secret might have this status if, for example, permissions are changed so that RDS can no longer access either the secret or the KMS key for the secret. When a secret has this status, you can correct the condition that caused the status. Alternatively, modify the DB instance to turn off automatic management of database credentials, and then modify the DB instance again to turn on automatic management of database credentials.

      • KmsKeyId (string) –

        The Amazon Web Services KMS key identifier that is used to encrypt the secret.

    • IOOptimizedNextAllowedModificationTime (datetime) –

      The next time you can modify the DB cluster to use the aurora-iopt1 storage type.

      This setting is only for Aurora DB clusters.

Exceptions

• RDS.Client.exceptions.DBClusterNotFoundFault

• RDS.Client.exceptions.InvalidDBClusterStateFault

• RDS.Client.exceptions.InvalidDBInstanceStateFault

Examples

This example performs a failover for the specified DB cluster to the specified DB instance.

response = client.failover_db_cluster(
    DBClusterIdentifier='myaurorainstance-cluster',
    TargetDBInstanceIdentifier='myaurorareplica',
)

print(response)

Expected Output:

{
    'DBCluster': {
    },
    'ResponseMetadata': {
        '...': '...',
    },
}