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Elastic Compute Service:InstallCloudAssistant

Last Updated:May 14, 2024

Installs Cloud Assistant Agent on Elastic Compute Service (ECS) instances. After you install Cloud Assistant Agent on ECS instances, restart the instances for the installation to take effect.

Operation description

Usage notes

After you call the InstallCloudAssistant operation to install Cloud Assistant Agent on an ECS instance, call the RebootInstance operation to restart the instance to make the installation take effect.


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

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters


The IDs of instances. You can specify up to 50 instance IDs in a single request.


The ID of the instance.


The request ID.


Response parameters

The current API has no return parameters


Sample success responses


  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"

Error codes

HTTP status codeError codeError messageDescription
400RegionId.ApiNotSupportedThe api is not supported in this region.The API operation cannot be called in the specified region. Check whether the specified RegionId parameter is valid.
400MissingParam.InstanceIdThe parameter instanceId is missing or empty.-
403InstanceIds.ExceedLimitThe number of instance IDs exceeds the upper limit.The number of specified instance IDs exceeds the upper limit.
403Operation.ForbiddenThe operation is not permitted.The operation is not supported.
404InvalidRegionId.NotFoundThe RegionId provided does not exist in our records.The RegionId provided does not exist
404InvalidInstance.NotFoundThe specified instance does not exist.-
500InternalError.DispatchAn error occurred when you dispatched the request.An error occurred while the request is being sent. Try again later.

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

Change history

Change timeSummary of changesOperation
2022-02-25The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 403 change
    Error Codes 404 change
    delete Error Codes: 400
    delete Error Codes: 500