Modifying DB Instance Specifications

Function

This API is used to modify the instance specifications.

Services will be interrupted for 5 to 10 minutes when you modify DB instance specifications. Exercise caution when performing this operation.

Constraints

• If you want to change the specifications to other specifications of the same series, the new specifications cannot be the same as the original specifications.
• Specifications can be modified only when the DB instance status is normal.

URI

• URI format

  POST https://{Endpoint}/v3/{project_id}/instances/{instance_id}/resize

• Parameter description

  Table 1 Parameter description

  Name	Mandatory	Description
  project_id	Yes	Specifies the project ID of a tenant in a region.
  instance_id	Yes	Specifies the instance ID, which can be obtained by calling the API for querying instances. If you do not have an instance, you can call the API used for creating an instance.

Requests

• Parameter description

  Table 2 Parameter description

  Name	Mandatory	Type	Description
  resize	Yes	Object	Specifies the specification information. For more information, see Table 3.

  Table 3 resize field data structure description

  Name	Mandatory	Type	Description
  target_type	No	String	Specifies the object type: This parameter is mandatory for a cluster instance. If you modify the specifications of a mongos node, the value is mongos. If you modify the specifications of a shard node, the value is shard. This parameter is not transferred for replica set and single node instances.
  target_id	Yes	String	Specifies the ID of the node or instance whose specifications are to be modified. You can obtain the ID by calling the API for querying instances. If you do not have an instance, you can call the API used for creating an instance. If you modify the specifications of a mongos node, the value is the mongos node ID. If you modify the specifications of a shard node, the value is the shard node ID. For a replica set instance, the value is the DB instance ID. For a single node instance, the value is the DB instance ID.
  target_spec_code	Yes	String	Specifies the resource specification code of the new specification. For details about how to obtain the value, see the response values of flavors.spec_code in Querying Database Specifications.

• Example request

  POST https://dds.eu-de.otc.t-systems.com/v3/0549b4a43100d4f32f51c01c2fe4acdb/instances/9136fd2a9fcd405ea4674276ce36dae8in02/resize

  Modify the mongos node specifications.

  {
    "resize": {
      "target_type": "mongos",
      "target_id": "a742c13a284949adad177672e8a0f01cno02",
      "target_spec_code": "dds.mongodb.c3.large.4.mongos"
    }
  }

  Modify the shard node specifications.

  {
    "resize": {
      "target_type": "shard",
      "target_id": "aeeb40a704904977ad78993d138ec942gr02",
      "target_spec_code": "dds.momgodb.c3.large.4.shard"
    }
  }

  Modify the config node specifications.

  {
    "resize": {
      "target_type": "config",
      "target_id": "10a1c330537b42c1a9b3f7a5ebcda35egr02",
      "target_spec_code": "dds.momgodb.c3.xlarge.2.config"
    }
  }

  Modify specifications of a replica set or a single node instance.

  {
    "resize": {
      "target_id": "aeeb40a704904977ad78993d138ec942in02",
      "target_spec_code": "dds.mongodb.c3.medium.4.repset"
    }
  }

Responses

• Parameter description

  Table 4 Parameter description

  Name	Type	Description
  job_id	String	Indicates the task ID.

• Response example

  {
      "job_id": "3711e2ad-5787-49bc-a47f-3f0b066af9f5"
  }

Status Code

Status Code:202.

For more information, see Status Code.

Error Code

For more information, see Error Code.