All Products
Search
Document Center

ApsaraDB RDS:CreateDBNodes

Last Updated:Apr 17, 2024

Adds a read-only node to an ApsaraDB RDS for MySQL cluster.

Operation description

Supported database engines

MySQL

References

Note Before you call this operation, carefully read the following documentation. Make sure that you fully understand the prerequisites and impacts for calling this operation.

Add a node to an ApsaraDB RDS for MySQL cluster

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
rds:CreateDBNodesWrite
  • DBInstance
    acs:rds:{#regionId}:{#accountId}:dbinstance/{#dbinstanceId}
  • rds:ResourceTag
none

Request parameters

ParameterTypeRequiredDescriptionExample
ClientTokenstringNo

The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests.

The token can contain only ASCII characters and cannot exceed 64 characters in length.

ETnLKlblzczshOTUbOCz****
DBInstanceIdstringYes

The instance ID You can call the DescribeDBInstances operation to query the instance ID.

rm-2ze450g4ctg6t****
DBNodeobject []Yes

The details of the node.

classCodestringYes

The specification information of the node.

mysql.n2.medium.xc
zoneIdstringYes

The zone ID of the node.

cn-zhangjiakou-a
ResourceGroupIdstringNo

The resource group ID. You can call the DescribeDBInstanceAttribute operation to query the resource group ID.

rg-acfmy*****

Response parameters

ParameterTypeDescriptionExample
object

The response parameters.

RequestIdstring

The ID of the request.

7A41C147-C8D0-4DAE-A1A2-17EBCD60DFA1
DBInstanceIdstring

The ID of the instance.

rm-2ze450g4ctg6t****
OrderIdlong

The ID of the order.

2133400000*****
NodeIdsstring

The ID of the created node. The value is a string. Multiple values are separated by commas (,).

rn-abcd2*****

Examples

Sample success responses

JSONformat

{
  "RequestId": "7A41C147-C8D0-4DAE-A1A2-17EBCD60DFA1",
  "DBInstanceId": "rm-2ze450g4ctg6t****",
  "OrderId": 0,
  "NodeIds": "rn-abcd2*****"
}

Error codes

HTTP status codeError codeError messageDescription
400DBNodeFormatFaultThe specified parameter DBNode is malformedThe specified dbNode parameter is invalid.
400DBNodeParameterRequiredThe specified parameter DBNode is required.You must specify the dbNode parameter.
400DBNodeParameterTooManyItemsThe specified parameter DBNode has too many items.An excessive number of nodes are added for dbNode.
400DBNodeParameter.InvalidClassCodeThe ClassCode of the item of the specified parameter DBNode is inconsistent.The ClassCode configuration is invalid for the DBNode parameter.
400DBNodeParameter.InvalidValueThe specific param DBNode is not valid.-
400DBNodeParameter.NotFoundThe specified parameter DBNode is not valid.-
400InvalidMultiTenantMulti tenants cannot exist in a same instance.-
400InvalidClassCodeThe specification code in the parameter is invalid.The specification code in the parameter is invalid.
403GroupReplicationNotSupport.InvalidEngineVersionGroup Replication requires the instance engine version to be 8.0.-
403GroupReplicationNotSupport.InvalidNodeClassCodeGroup Replication requires the ClassCode of each node to be consistent.-
403GroupReplicationNotSupport.InvalidNodeNumGroup Replication is not supported, the number of nodes must be an odd number greater than or equal to 3.-
403GroupReplicationNotSupport.InvalidXengineGroup Replication is not supported because the instance has xengine tables.-
403GroupReplicationNotSupport.MemoryTooSmallGroup Replication is not supported because the memory is too small.-
403OperationDenied.DBTypeThe operation is not permitted due to type of the database.The operation is not supported for the database engine of the RDS instance.

For a list of error codes, visit the Service error codes.

Change history

Change timeSummary of changesOperation
2024-03-22The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    delete Error Codes: 400
    delete Error Codes: 403
2023-11-23The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 403 change
    delete Error Codes: 400
2023-11-07The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    delete Error Codes: 400
    delete Error Codes: 403
2023-10-20The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 400 change
    delete Error Codes: 403
2023-10-20The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 400 change
    delete Error Codes: 403
2023-09-08The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 400 change
    delete Error Codes: 403
2023-07-24The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 400 change
    delete Error Codes: 403
2023-06-27The Error code has changed. The request parameters of the API has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    delete Error Codes: 400
    delete Error Codes: 403
Input ParametersThe request parameters of the API has changed.
    Added Input Parameters: ResourceGroupId
2023-03-22The Error code has changed. The response structure of the API has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    delete Error Codes: 400
    delete Error Codes: 403
Output ParametersThe response structure of the API has changed.