Uninstalls a backup client from one or more Elastic Compute Service (ECS) instances.


  • This operation creates an asynchronous task at the backend and calls Cloud Assistant to uninstall a backup client from an ECS instance.
  • You can call the DescribeTask operation to query the execution result of an asynchronous task.
  • The timeout period of an asynchronous task is 15 minutes. We recommend that you call the DescribeTask operation to run the first query 30 seconds after you call the UninstallBackupClients operation to uninstall backup clients. Then, run the next queries at an interval of 30 seconds.

Request parameters

Parameter Type Required Example Description
Action String Yes UninstallBackupClients

The operation that you want to perform. Set the value to UninstallBackupClients.

InstanceIds Map Yes ["i-0xi5wj5*****v3j3bh2gj5"]

The IDs of ECS instances. You can specify up to 20 IDs.

ClientIds Map No ["c-*********************"]

The IDs of backup clients. The sum of the number of backup client IDs and the number of ECS instance IDs cannot exceed 20. Otherwise, an error occurs.

Response parameters

Parameter Type Example Description
Code String 200

The HTTP status code. The status code 200 indicates that the request is successful.

Message String successful

The message that is returned. If the request is successful, a value of successful is returned. If the request fails, an error message is returned.

RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.

TaskId String t-*********************

The ID of the asynchronous task. You can call the DescribeTask operation to query the execution result of the asynchronous task.

Success Boolean true

Indicates whether the request is successful. Valid values:

  • true: The request is successful.
  • false: The request failed.
InstanceStatuses Array of InstanceStatus

The status of the ECS instance.

ValidInstance Boolean true

Indicates whether a backup client can be installed on the ECS instance.

  • true: A backup client can be installed on the ECS instance.
  • false: A backup client cannot be installed on the ECS instance.
InstanceId String i-0xi5w***v3j3bh2gj5

The ID of the ECS instance.

ErrorCode String InstanceNotExists

The error code that is returned. Valid values:

  • If the value is empty, the request is successful.
  • InstanceNotExists: The ECS instance does not exist.
  • InstanceNotRunning: The ECS instance is not running.
  • CloudAssistNotRunningOnInstance: Cloud Assistant is unavailable.


Sample requests

&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK


JSON format

HTTP/1.1 200 OK

  "Code" : "200",
  "Message" : "successful",
  "RequestId" : "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "TaskId" : "t-*********************",
  "Success" : true,
  "InstanceStatuses" : [ {
    "ValidInstance" : true,
    "InstanceId" : "i-0xi5w***v3j3bh2gj5",
    "ErrorCode" : "InstanceNotExists"
  } ]

Error codes

For a list of error codes, visit the API Error Center.