Scaling Up Storage Space

API Description

This API is used to scale up the storage space of a DB instance.

Restrictions

This API supports both yearly/monthly and pay-per-use DB instances.
The storage space of a read replica in a cluster instance cannot be scaled up.

URI

URI format
POST https://{Endpoint}/v3/{project_id}/instances/{instance_id}/enlarge-volume
URI example
https://dds.ap-southeast-1.myhuaweicloud.com/v3/0549b4a43100d4f32f51c01c2fe4acdb/instances/9136fd2a9fcd405ea4674276ce36dae8in02/enlarge-volume

**Table 1** Request parameters
Name	Type	IN	Mandatory	Description
X-Auth-Token	string	header	Yes	User token obtained from IAM. For details, see Authentication.
project_id	string	path	Yes	Project ID of a tenant in a region. To obtain the project ID, see Obtaining a Project ID.
instance_id	string	path	Yes	Instance ID, which can be obtained by calling the API described in Querying Instances and Details. If you do not have an instance, call the API described in Creating a DB Instance to create one.

Requests

Parameter description

**Table 2** Parameter description
Name	Type	Mandatory	Description
volume	Object	Yes	The detailed information about the volume request. For more information, see Table 3.
is_auto_pay	Boolean	No	Whether the order is automatically paid from your account when you scale up the storage of a yearly/monthly DB instance. This parameter does not affect the payment mode of automatic renewal. true: indicates that the order is automatically paid from the account. false: indicates that the order is manually paid from the account. The default value is false.

**Table 3** Data structure description of the volume field
Name	Type	Mandatory	Description
group_id	String	No	The role ID. For a cluster instance, this parameter is set to the ID of the shard group. This parameter is not transferred for replica set instances.
size	String	Yes	The requested disk capacity. The value must be an integer multiple of 10 and greater than the current storage space. In a cluster instance, this parameter indicates the storage space of shard nodes. The value range is from 10 GB to 5000 GB. In a replica set instance, this parameter indicates the disk capacity of the DB instance to be expanded. The value range is from 10 GB to 5000 GB. In a single node instance, this parameter indicates the disk capacity of the DB instance to be expanded. The value range is from 10 GB to 1000 GB.
node_ids	Array of strings	No	This parameter is required when the disk capacity of the read replica of a replica set instance is expanded. Only one element can be transferred in the list.

Example Request

Scaling up the storage space of a cluster instance to 20 GB

POST https://dds.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/054e292c9880d4992f02c0196d3ein02/enlarge-volume 
  
 { 
   "volume" : { 
     "group_id" : "1b0c008adbcb495c81a3d5762a02a2abgr02", 
     "size" : 20 
   } 
 }

Scaling up the storage space of a replica set instance to 20 GB

POST https://dds.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/054e292c9880d4992f02c0196d3ein02/enlarge-volume 
  
 { 
   "volume" : { 
     "size" : 20 
   } 
 }

Scaling up the storage space of a single node instance to 20 GB

POST https://dds.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/054e292c9880d4992f02c0196d3ein02/enlarge-volume 
  
 { 
   "volume" : { 
     "size" : 20 
   } 
 }

Scaling up the storage space of a read replica in a replica set instance to 20 GB

POST https://dds.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/054e292c9880d4992f02c0196d3ein02/enlarge-volume
{
"volume" : {
"size" : 20,
"node_ids" : [ "8f643d252d834a4c916b2db4322f9955in02" ]
}
}

Responses

Parameter description

**Table 4** Parameter description
Name	Type	Mandatory	Description
job_id	String	Yes	The task ID.
order_id	String	No	The order ID. This parameter is returned only when the storage capacity of a yearly/monthly DB instance is expanded.

Response example

{
     "job_id" : "04efe8e2-9255-44ae-a98b-d87cae411890" 
}

SDK

Click Document Database Service DDS SDK to download the SDK or view the SDK document. To learn how to install and authenticate an SDK, read the Usage section.