Failover Db Cluster
neptune_failover_db_cluster | R Documentation |
Forces a failover for a DB cluster¶
Description¶
Forces a failover for a DB cluster.
A failover for a DB cluster promotes one of the Read Replicas (read-only instances) in the DB cluster to be the primary instance (the cluster writer).
Amazon Neptune will automatically fail over to a Read Replica, if one exists, when the primary instance fails. You can force a failover when you want to simulate a failure of a primary instance for testing. Because each instance in a DB cluster has its own endpoint address, you will need to clean up and re-establish any existing connections that use those endpoint addresses when the failover is complete.
Usage¶
Arguments¶
DBClusterIdentifier
A DB cluster identifier to force a failover for. This parameter is not case-sensitive.
Constraints:
Must match the identifier of an existing DBCluster.
TargetDBInstanceIdentifier
The name of the instance to promote to the primary instance.
You must specify the instance identifier for an Read Replica in the DB cluster. For example,
mydbcluster-replica1
.
Value¶
A list with the following syntax:
list(
DBCluster = list(
AllocatedStorage = 123,
AvailabilityZones = list(
"string"
),
BackupRetentionPeriod = 123,
CharacterSetName = "string",
DatabaseName = "string",
DBClusterIdentifier = "string",
DBClusterParameterGroup = "string",
DBSubnetGroup = "string",
Status = "string",
PercentProgress = "string",
EarliestRestorableTime = as.POSIXct(
"2015-01-01"
),
Endpoint = "string",
ReaderEndpoint = "string",
MultiAZ = TRUE|FALSE,
Engine = "string",
EngineVersion = "string",
LatestRestorableTime = as.POSIXct(
"2015-01-01"
),
Port = 123,
MasterUsername = "string",
DBClusterOptionGroupMemberships = list(
list(
DBClusterOptionGroupName = "string",
Status = "string"
)
),
PreferredBackupWindow = "string",
PreferredMaintenanceWindow = "string",
ReplicationSourceIdentifier = "string",
ReadReplicaIdentifiers = list(
"string"
),
DBClusterMembers = list(
list(
DBInstanceIdentifier = "string",
IsClusterWriter = TRUE|FALSE,
DBClusterParameterGroupStatus = "string",
PromotionTier = 123
)
),
VpcSecurityGroups = list(
list(
VpcSecurityGroupId = "string",
Status = "string"
)
),
HostedZoneId = "string",
StorageEncrypted = TRUE|FALSE,
KmsKeyId = "string",
DbClusterResourceId = "string",
DBClusterArn = "string",
AssociatedRoles = list(
list(
RoleArn = "string",
Status = "string",
FeatureName = "string"
)
),
IAMDatabaseAuthenticationEnabled = TRUE|FALSE,
CloneGroupId = "string",
ClusterCreateTime = as.POSIXct(
"2015-01-01"
),
CopyTagsToSnapshot = TRUE|FALSE,
EnabledCloudwatchLogsExports = list(
"string"
),
PendingModifiedValues = list(
PendingCloudwatchLogsExports = list(
LogTypesToEnable = list(
"string"
),
LogTypesToDisable = list(
"string"
)
),
DBClusterIdentifier = "string",
IAMDatabaseAuthenticationEnabled = TRUE|FALSE,
EngineVersion = "string",
BackupRetentionPeriod = 123,
StorageType = "string",
AllocatedStorage = 123,
Iops = 123
),
DeletionProtection = TRUE|FALSE,
CrossAccountClone = TRUE|FALSE,
AutomaticRestartTime = as.POSIXct(
"2015-01-01"
),
ServerlessV2ScalingConfiguration = list(
MinCapacity = 123.0,
MaxCapacity = 123.0
),
GlobalClusterIdentifier = "string",
IOOptimizedNextAllowedModificationTime = as.POSIXct(
"2015-01-01"
),
StorageType = "string"
)
)