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

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Debug

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:
- For mandatory resource types, indicate with a prefix of * .
- 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.

Operation	Access level	Resource type	Condition key	Associated operation
cddc:ModifyDedicatedHostClass	update	All Resources ``	none	none

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.

Change history

Change time	Summary of changes	Operation

No change history