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StartInstanceRefresh

Last updated: 2024-03-20 11:37:58

1. API Description

Domain name for API request: as.tencentcloudapi.com.

This API is used to refresh running CVM instances in the scaling group and return the RefreshActivityId for the instance refresh activity based on parameters in the launch configuration.

  • For refresh methods involving reinstallation (currently only reinstallation is supported), during reinstallation, only the ImageId, UserData, EnhancedService, HostName, and LoginSettings parameters will be fetched from the launch configuration for refreshing; other parameters of the instance will not be refreshed.
  • During the instance refresh process (including paused status), the scaling group will be disabled. It is not recommended to modify the associated launch configuration during a refresh, as this may impact the refresh parameters, leading to inconsistent instance configurations.
  • In rolling update mode, instance refreshes are performed in multiple batches. If there are failed refreshes within a batch, the activity will enter a failed paused status.
  • Instances pending refresh that are removed or destroyed will be marked as NOT_FOUND status, but they will not block the instance refresh activity.
  • Even if a running instance has parameters consistent with the latest launch configuration, it can still undergo another refresh.

A maximum of 20 requests can be initiated per second for this API.

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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 Params. The value used for this API: StartInstanceRefresh.
Version Yes String Common Params. The value used for this API: 2018-04-19.
Region No String Common Params. This parameter is not required for this API.
AutoScalingGroupId Yes String Scaling group ID.
RefreshSettings Yes RefreshSettings Refresh settings.
RefreshMode No String Refresh mode, currently, only rolling updates are supported, with the default value being ROLLING_UPDATE_RESET.

3. Output Parameters

Parameter Name Type Description
RefreshActivityId String Refresh activity ID.
RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Performing Instance Refresh Using the Rolling Update Method

This example shows you how to divide the instances in the scaling group asg-9dn1a5y6 into 3 batches for rolling updates, and there will be an automatic pause between batches.

Input Example

POST / HTTP/1.1
Host: as.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: StartInstanceRefresh
<Common request parameters>
{
    "AutoScalingGroupId": "asg-9dn1a5y6",
    "RefreshMode": "ROLLING_UPDATE",
    "RefreshSettings": {
        "RollingUpdateSettings": {
            "BatchNumber": 3,
            "BatchPause": "BATCH_INTERVAL_PAUSE"
        }
    }
}

Output Example

{
    "Response": {
        "RefreshActivityId": "asr-y67t5r4e",
        "RequestId": "c4190090-bc60-4f48-b9d4-48095b9596db"
    }
}

5. Developer Resources

SDK

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
InvalidParameterValue.BatchNumberTooLarge The batch count cannot exceed the total number of instances pending refresh.
ResourceNotFound.AutoScalingGroupIdNotFound The scaling group does not exist.
ResourceUnavailable.AutoScalingGroupAbnormalStatus The auto scaling group is exceptional.
ResourceUnavailable.AutoScalingGroupInActivity The auto scaling group is active.
ResourceUnavailable.AutoScalingGroupInRefreshActivity The scaling group is already involved in another instance refresh activity.
ResourceUnavailable.InquiryPriceResetInstanceFailed The instance reinstallation quotation failed, because the new image conflicts with other parameters of the instance or the new image does not exist.
ResourceUnavailable.NoInstanceCanRefresh There are no instances in running status within the scaling group, making it impossible to perform an instance refresh.
ResourceUnavailable.RefreshActivityStatusConflictWithOperation The instance refresh activity status conflicts with the current operation.
UnauthorizedOperation.AutoScalingRoleUnauthorized You have not assigned the CAM role AS-QCSRole to Auto Scaling. Please go to the AS console to complete authorization first.
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