Last updated: 2020-09-17 17:54:14

1. API Description

Domain name for API request:

This API is used to restart instances.

  • You can only perform this operation on instances whose status is RUNNING.
  • If the API is called successfully, the instance status will become REBOOTING. After the instance is restarted, its status will become RUNNING again.
  • Forced restart is supported. A forced restart is similar to switching off the power of a physical computer and starting it again. It may cause data loss or file system corruption. Be sure to only force start a CVM when it cannot be restarted normally.
  • Batch operations are supported. The maximum number of instances in each request is 100.

A maximum of 10 requests can be initiated per second for this API.

Note: This API supports Finance regions. If the common parameter Region is a Finance region, a domain name with the Finance region needs to be specified, for example:

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: RebootInstances.
Version Yes String Common parameter. The value used for this API: 2017-03-12.
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
InstanceIds.N Yes Array of String Instance IDs. To obtain the instance IDs, you can call DescribeInstances and look for InstanceId in the response. You can operate up to 100 instances in each request.
ForceReboot No Boolean Whether to force restart an instance after a normal restart fails. Valid values:
  • TRUE: force restart an instance after a normal restart fails
  • FALSE: do not force restart an instance after a normal restart fails

    Default value: FALSE.
  • StopType No String Shutdown type. Valid values:
  • SOFT: soft shutdown
  • HARD: hard shutdown
  • SOFT_FIRST: perform a soft shutdown first, and perform a hard shutdown if the soft shutdown fails

    Default value: SOFT.
  • 3. Output Parameters

    Parameter Name Type Description
    RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

    4. Example

    Example1 Restarting instances

    This example shows you how to restart two instances.

    Input Example

    &<common request parameters>

    Output Example

      "Response": {
        "RequestId": "6ef60bec-0242-43af-bb20-270359fb54a7"

    5. Developer Resources

    API Explorer

    This tool allows online call, signature authentication, SDK code generation and quick search of APIs to greatly improve the efficiency of using TencentCloud APIs.


    TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

    Command Line Interface

    6. Error Code

    The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

    Error Code Description
    InternalServerError Internal error.
    InvalidInstance.NotSupported This instance is not supported.
    InvalidInstanceId.Malformed Invalid instance ID. The specified instance ID has an invalid format. For example, ins-1122 has an invalid ID length.
    InvalidInstanceId.NotFound No instance found.
    InvalidParameterCombination The parameter combination is invalid.
    InvalidParameterValue Invalid parameter value: parameter value is in the wrong format or is not supported.
    InvalidParameterValue.LimitExceeded The number of parameter values exceeds the limit.
    MissingParameter Missing parameter: a required parameter is missing.
    MutexOperation.TaskRunning An identical job is running.
    OperationDenied.InstanceOperationInProgress The instance has an operation in progress. Please try again later.
    UnauthorizedOperation.MFAExpired Unauthorized operation. Make sure Multi-Factor Authentication (MFA) is valid.
    UnauthorizedOperation.MFANotFound Unauthorized operation. Make sure Multi-Factor Authentication (MFA) exists.
    UnsupportedOperation.InstanceStateRebooting The restarting instances do not support this operation.
    UnsupportedOperation.InstanceStateShutdown The isolated instances do not support this operation.
    UnsupportedOperation.InstanceStateStopped The shutdown instances do not support this operation.
    UnsupportedOperation.InstanceStateStopping The stopping instances do not support this operation.

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