Function

This API is used to query scaling action logs based on search criteria. The scaling actions include increasing instances and migrating instances to balance load. The results are displayed by page.

The difference between the V2 and V1 APIs for querying scaling action logs is that V2 displays more detailed action logs, such as ELB migration logs.
Search criteria can be the start time, end time, start line number, number of records, and scaling action type.
If no search criteria are specified, a maximum of 20 scaling action logs can be queried by default.

URI

GET /autoscaling-api/v2/{project_id}/scaling_activity_log/{scaling_group_id}

You can type the question mark (?) and ampersand (&) at the end of the URI to define multiple search criteria. Scaling action logs can be searched by all optional parameters in the following table. For details, see the example request.

**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.
log_id	No	String	Specifies the scaling action log ID.
start_time	No	String	Specifies the start time that complies with UTC for querying scaling action logs. The format of the start time is yyyy-MM-ddThh:mm:ssZ.
end_time	No	String	Specifies the end time that complies with UTC for querying scaling action logs. The format of the end time is yyyy-MM-ddThh:mm:ssZ.
start_number	No	Integer	Specifies the start line number. The default value is 0. The minimum parameter value is 0.
limit	No	Integer	Specifies the number of query records. The default value is 20. The value ranges from 0 to 100.
type	No	String	Specifies the types of the scaling actions to be queried. Different types are separated by commas (,). NORMAL: indicates a common scaling action. MANUAL_REMOVE: indicates manually removing instances from an AS group. MANUAL_DELETE: indicates manually removing and deleting instances from an AS group. MANUAL_ADD: indicates manually adding instances to an AS group. ELB_CHECK_DELETE: indicates that instances are removed from an AS group and deleted based on the ELB health check result. AUDIT_CHECK_DELETE: indicates that instances are removed from an AS group and deleted based on the audit. DIFF: indicates that the number of expected instances is different from the actual number of instances. MODIFY_ELB: indicates the load balancer migration.
status	No	String	Specifies the status of the scaling action. SUCCESS: The scaling action has been performed. FAIL: Performing the scaling action failed. DOING: The scaling action is being performed.

Request

None

Example Request

This example queries the scaling action logs of the AS group with ID e5d27f5c-dd76-4a61-b4bc-a67c5686719a. The start time is 2018-11-22T00:00:00Z, and the end time is 2018-11-22T14:00:00Z.

GET https://{Endpoint}/autoscaling-api/v2/{project_id}/scaling_activity_log/e5d27f5c-dd76-4a61-b4bc-a67c5686719a?start_time=2018-11-22T00:00:00Z&end_time=2018-11-22T14:00:00Z

Response

**Table 2** Response parameters
Parameter	Type	Description
total_number	Integer	Specifies the total number of query records.
start_number	Integer	Specifies the start line number.
limit	Integer	Specifies the maximum number of resources to be queried.
scaling_activity_log	Array of scaling_activity_log objects	Specifies scaling action logs. For details, see Table 3.

**Table 3** **scaling_activity_log** field description
Parameter	Type	Description
status	String	Specifies the status of the scaling action. SUCCESS: The scaling action has been performed. FAIL: Performing the scaling action failed. DOING: The scaling action is being performed.
start_time	String	Specifies the start time of the scaling action. The time format must comply with UTC.
end_time	String	Specifies the end time of the scaling action. The time format must comply with UTC.
id	String	Specifies the scaling action log ID.
instance_removed_list	Array of scaling_instance objects	Specifies names of the ECSs that are removed from the AS group in a scaling action. For details, see Table 4.
instance_deleted_list	Array of scaling_instance objects	Specifies names of the ECSs that are removed from the AS group and deleted in a scaling action. For details, see Table 4.
instance_added_list	Array of scaling_instance objects	Specifies names of the ECSs that are added to the AS group in a scaling action. For details, see Table 4.
instance_failed_list	Array of scaling_instance objects	Specifies the ECSs for which a scaling action fails. For details, see Table 4.
instance_standby_list	Array of scaling_instance objects	Specifies the ECSs that are set to standby mode or for which standby mode is canceled in a scaling action. For details, see Table 4. This parameter is reserved.
scaling_value	Integer	Specifies the number of added or deleted instances during the scaling.
description	String	Specifies the description of the scaling action.
instance_value	Integer	Specifies the number of instances in the AS group.
desire_value	Integer	Specifies the expected number of instances for the scaling action.
lb_bind_success_list	Array of modify_lb objects	Specifies the load balancers that are bound to the AS group. For details, see Table 5.
lb_bind_failed_list	Array of modify_lb objects	Specifies the load balancers that failed to be bound to the AS group. For details, see Table 5.
lb_unbind_success_list	Array of modify_lb objects	Specifies the load balancers that are unbound from the AS group. For details, see Table 5.
lb_unbind_failed_list	Array of modify_lb objects	Specifies the load balancers that failed to be unbound from the AS group. For details, see Table 5.
type	String	Specifies the type of the scaling action.

**Table 4** **scaling_instance** field description
Parameter	Type	Description
instance_name	String	Specifies the ECS name.
instance_id	String	Specifies the ECS ID.
failed_reason	String	Specifies the cause of the instance scaling failure.
failed_details	String	Specifies details of the instance scaling failure.
instance_config	String	Specifies the information about instance configurations.

**Table 5** **modify_lb** field description
Parameter	Type	Description
lbaas_listener	lbaas_listener object	Specifies information about an enhanced load balancer. For details, see Table 6.
listener	String	Specifies information about a classic load balancer.
failed_reason	String	Specifies the cause of a load balancer migration failure.
failed_details	String	Specifies the details of a load balancer migration failure.

**Table 6** **lbaas_listener** field description
Parameter	Type	Description
listener_id	String	Specifies the listener ID.
pool_id	String	Specifies the backend ECS group ID.
protocol_port	Integer	Specifies the backend protocol port, which is the port on which a backend ECS listens for traffic.
weight	Integer	Specifies the weight, which determines the portion of requests a backend ECS processes when being compared to other backend ECSs added to the same listener.

Example Response

{
    "limit": 20,
    "scaling_activity_log": [
    {
      "id": "8753a18c-931d-4cb8-8d49-6c99396af348",
      "instance_value": 0,
      "desire_value": 0,
      "scaling_value": 0,
      "start_time": "2018-11-22T13:46:20Z",
      "end_time": "2018-11-22T13:47:38Z",
      "status": "SUCCESS",
      "lb_bind_success_list": [
        {
          "lbaas_listener": {
            "weight": 1,
            "listener_id": null,
            "pool_id": "0f0a9dd8-2e1d-4432-8ca2-49adc75aa662",
            "protocol_port": 82
          }
        }
      ],
      "lb_bind_failed_list": [],
      "lb_unbind_success_list": [],
      "lb_unbind_failed_list": [],
      "type": "MODIFY_ELB"
    },
    {
      "id": "44152cf2-a005-4507-b6e9-66a2a64eff52",
      "instance_value": 0,
      "desire_value": 1,
      "scaling_value": 1,
      "start_time": "2018-11-22T13:44:22Z",
      "end_time": "2018-11-22T13:46:02Z",
      "instance_added_list": [
        {
          "instance_id": "8e273bac-d303-46dc-9883-628be2294bdf",
          "instance_name": "as-config-t66a_9W8L9SSK"
        }
      ],
      "instance_deleted_list": [],
      "instance_removed_list": [],
      "instance_failed_list": [],
      "status": "SUCCESS",
      "description": "{\"reason\":[{\"change_reason\":\"MANNUAL\",\"old_value\":0,\"change_time\":\"2018-11-22T13:44:19Z\",\"new_value\":1}]}",
      "type": "NORMAL"
    }
],
    "total_number": 2,
    "start_number": 0
}

Returned Values

Normal
200

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 to process the request.
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.

Querying Scaling Action Logs (V2)