CheckInstanceExist - ApsaraDB RDS - Alibaba Cloud Documentation Center

You can call the CheckInstanceExist operation to query whether an ApsaraDB RDS instance exists.

Debugging

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

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:
- 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.

Operation	Access level	Resource type	Condition key	Associated operation
rds:CheckInstanceExist	get	DBInstance acs:rds:{#regionId}:{#accountId}:dbinstance/{#dbinstanceId}	rds:ResourceTag	none

Request parameters

Parameter	Type	Required	Description	Example
DBInstanceId	string	Yes	The ID of the instance.	rm-uf6wjk5****

Response parameters

Parameter	Type	Description	Example
	object
IsExistInstance	boolean	Indicates whether the instance exists. Valid values: true: The instance exists. false: The instance does not exist.	true
RequestId	string	The ID of the request.	11439B36-F703-49EB-8656-D3C87BE28B57

Examples

Sample success responses

JSONformat

{
  "IsExistInstance": true,
  "RequestId": "11439B36-F703-49EB-8656-D3C87BE28B57"
}

Error codes

HTTP status code	Error code	Error message	Description
404	InvalidDBInstanceName.NotFound	Invalid DBInstanceId NotFound.	The instance ID cannot be found.

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