Help Center> Auto Scaling> API Reference (Kuala Lumpur Region)> APIs> Lifecycle Hook> Calling Back an Instance Lifecycle Hook
Updated on 2022-08-15 GMT+08:00

Calling Back an Instance Lifecycle Hook

Function

This interface is used to call back the lifecycle hook specified by a scaling instance based on the lifecycle action key or based on the instance ID and lifecycle hook name.

  • If your custom operations were successful before the timeout duration elapses, select Abandon or Continue to complete the lifecycle action.
  • If you require more time to complete your custom operations, select Extend Timeout to enable the instance to remain in a wait state for an additional hour.
  • The callback operation can be performed only when the lifecycle hook of the target instance is in HANGING state.

URI

PUT /autoscaling-api/v1/{project_id}/scaling_instance_hook/{scaling_group_id}/callback

Table 1 Parameter description

Parameter

Mandatory

Type

Description

project_id

Yes

String

Specifies the project ID.

scaling_group_id

Yes

String

Specifies the AS group ID.

Request Message

  • Request parameters
    Table 2 Request parameters

    Parameter

    Mandatory

    Type

    Description

    lifecycle_action_key

    No

    String

    Specifies the lifecycle operation token, which is obtained by calling the API for querying instance suspension.

    When specifying a lifecycle callback object, this field is mandatory if the instance_id parameter is not used. If both this parameter and the instance_id parameter are used, preferentially use this parameter for callback.

    instance_id

    No

    String

    Specifies the instance ID.

    When a lifecycle callback object is specified, this parameter is mandatory if the lifecycle_action_key parameter is not used.

    lifecycle_hook_name

    No

    String

    Specifies the lifecycle hook name.

    When a lifecycle callback object is specified, this parameter is mandatory if the lifecycle_action_key parameter is not used.

    lifecycle_action_result

    Yes

    String

    Specifies the lifecycle callback action.

    • ABANDON: terminates the instance.
    • CONTINUE: continues the instance.
    • EXTEND: extends the timeout duration, one hour each time.
  • Example request
    This example shows how to use lifecycle token 23880867-6288-4470-98a8-f8bda096b6c4 in the AS group with ID e5d27f5c-dd76-4a61-b4bc-a67c5686719a to perform the ABANDON callback operation.
    PUT https://{Endpoint}/autoscaling-api/v1/{project_id}/scaling_instance_hook/e5d27f5c-dd76-4a61-b4bc-a67c5686719a/callback
    
    {
        "lifecycle_action_result": "ABANDON",
        "lifecycle_action_key":"23880867-6288-4470-98a8-f8bda096b6c4"
    }

Response Message

  • Response parameters

    None

  • Example response

    None

Returned Values

  • Normal

    204

  • Abnormal

    Returned Value

    Description

    400 Bad Request

    The server failed to process the request.

    401 Unauthorized

    You must enter the username and password to access the requested page.

    403 Forbidden

    You are forbidden to access the requested page.

    404 Not Found

    The server could not find the requested page.

    405 Method Not Allowed

    You are not allowed to use the method specified in the request.

    406 Not Acceptable

    The response generated by the server could not be accepted by the client.

    407 Proxy Authentication Required

    You must use the proxy server for authentication so that the request can be processed.

    408 Request Timeout

    The request timed out.

    409 Conflict

    The request could not be processed due to a conflict.

    500 Internal Server Error

    Failed to complete the request because of an internal service error.

    501 Not Implemented

    Failed to complete the request because the server does not support the requested function.

    502 Bad Gateway

    Failed to complete the request because the request is invalid.

    503 Service Unavailable

    Failed to complete the request because the system is unavailable.

    504 Gateway Timeout

    A gateway timeout error occurred.

Error Codes

See Error Codes.