failover-db-cluster¶

Description¶

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 deployments with two readable standby DB instances in the Amazon RDS User Guide .

Synopsis¶

  failover-db-cluster
--db-cluster-identifier <value>
[--target-db-instance-identifier <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options¶

--db-cluster-identifier (string)

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

Constraints:

Must match the identifier of an existing DBCluster.

--target-db-instance-identifier (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.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

json
text
table
yaml
yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

base64
raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Output¶

DBCluster -> (structure)

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)

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

(string)

BackupRetentionPeriod -> (integer)

Specifies 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)

Contains the name of the initial database of this DB cluster that was provided at create time, if one was specified when the DB cluster was created. This same name is returned for the life of the DB cluster.

DBClusterIdentifier -> (string)

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

DBClusterParameterGroup -> (string)

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

DBSubnetGroup -> (string)

Specifies information on the subnet group associated with the DB cluster, including the name, description, and subnets in the subnet group.

Status -> (string)

Specifies the current state of this DB cluster.

AutomaticRestartTime -> (timestamp)

The time when a stopped DB cluster is restarted automatically.

PercentProgress -> (string)

Specifies the progress of the operation as a percentage.

EarliestRestorableTime -> (timestamp)

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

Endpoint -> (string)

Specifies 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)

Identifies all custom endpoints associated with the cluster.

(string)

MultiAZ -> (boolean)

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

Engine -> (string)

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

EngineVersion -> (string)

Indicates the database engine version.

LatestRestorableTime -> (timestamp)

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

Port -> (integer)

Specifies the port that the database engine is listening on.

MasterUsername -> (string)

Contains the master username for the DB cluster.

DBClusterOptionGroupMemberships -> (list)

Provides the list of option group memberships for this DB cluster.

(structure)

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)

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

PreferredMaintenanceWindow -> (string)

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

ReplicationSourceIdentifier -> (string)

Contains 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)

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

(structure)

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)

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

(structure)

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)

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

StorageEncrypted -> (boolean)

Specifies 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)

Provides 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.

(structure)

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)

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

CloneGroupId -> (string)

Identifies the clone group to which the DB cluster is associated.

ClusterCreateTime -> (timestamp)

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

EarliestBacktrackTime -> (timestamp)

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

BacktrackWindow -> (long)

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 -> (long)

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 , serverless , parallelquery , global , or multimaster .

For more information, see CreateDBCluster .

ScalingConfigurationInfo -> (structure)

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

HttpEndpointEnabled -> (boolean)

A value that 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)

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

CrossAccountClone -> (boolean)

Specifies 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.

(structure)

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 of the Active Directory Domain.

IAMRoleName -> (string)

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

TagList -> (list)

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

(structure)

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

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)

Specifies whether a secondary cluster in an Aurora global database has write forwarding enabled, not enabled, or is in the process of enabling it.

GlobalWriteForwardingRequested -> (boolean)

Specifies whether you have requested to enable write forwarding 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 -> (structure)

A value that specifies that changes to the DB cluster are pending. This element is only included when changes are pending. Specific changes are identified by subelements.

PendingCloudwatchLogsExports -> (structure)

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.

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.

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

Iops -> (integer)

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

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

PubliclyAccessible -> (boolean)

Specifies the accessibility options for the DB instance.

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

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

For more information, see CreateDBInstance .

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

AutoMinorVersionUpgrade -> (boolean)

A value that indicates that 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)

True if Performance Insights is enabled for the DB cluster, and otherwise false.

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. The default is 7 days. The following values are valid:

7

month * 31, where month is a number of months from 1-23

731

For example, the following values are valid:

93 (3 months * 31)

341 (11 months * 31)

589 (19 months * 31)

731

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

ServerlessV2ScalingConfiguration -> (structure)

Shows 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 -> (double)

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 -> (double)

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.

Valid values:

IPV4

DUAL

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.

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