ModifyDedicatedHostClass - ApsaraDB for MyBase - Alibaba Cloud Documentation Center

Upgrades host specifications.

Operation description

After a host is created in a dedicated cluster, you can modify the specifications of the host based on your business requirements. The host specifications include the CPU and memory resources. For more information, see Upgrade host specifications.

Note When you upgrade the specifications of a host, the host restarts. The database instances that are running on the host also restart. For information about the impacts of a host restart, see Restart a host.

Debugging

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

Debug

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID.	cn-hangzhou
DedicatedHostId	string	Yes	The host ID. You can log on to the ApsaraDB for MyBase console and go to the Hosts page to view the host ID.	ch-bp1fgj3kt7fsb****
TargetClassCode	string	Yes	The instance type to which you want the host to be upgraded. For more information, see Host specification details.	rds.c6.x4large
SwitchTime	string	No	The time when you want to upgrade the specifications of the host. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. Note This parameter must be specified only when SwitchTimeMode is set to 2.	2021-07-13T07:14:22Z
SwitchTimeMode	string	No	The execution mode that is used to upgrade host specifications. Valid values: 0 (default): immediately upgrades host specifications. 2: upgrades host specifications at a specified point in time. Note If you set this parameter to 2, you must specify SwitchTime.	2

Response parameters

Parameter	Type	Description	Example
	object
DedicatedHostId	string	The host ID.	ch-bp1fgj3kt7fsb****
RequestId	string	The request ID.	D6E068C3-25BC-455A-85FE-45F0B22ESD12
TaskId	string	The task ID.	10254125

Examples

Sample success responses

JSONformat

{
  "DedicatedHostId": "ch-bp1fgj3kt7fsb****",
  "RequestId": "D6E068C3-25BC-455A-85FE-45F0B22ESD12",
  "TaskId": "10254125"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidAction	The specified action is not valid.	The specified action is not valid.

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