Function

This API is used to query instances in an AS group based on search criteria. The results are displayed by page.

Search criteria can be the instance lifecycle status, instance health status, instance protection status, start line number, and number of records in the AS group.
If no search criteria are specified, a maximum of 20 instances in an AS group can be queried by default.

URI

GET /autoscaling-api/v1/{project_id}/scaling_group_instance/{scaling_group_id}/list

You can type the question mark (?) and ampersand (&) at the end of the URI to define multiple search criteria. Instances in an AS group 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.
life_cycle_state	No	String	Specifies the instance lifecycle status in the AS group. INSERVICE: The instance is enabled. PENDING: The instance is being added to the AS group. REMOVING: The instance is being removed from the AS group.
health_status	No	String	Specifies the instance health status. INITIALIZING: The instance is initializing. NORMAL: The instance is normal. ERROR: The instance is abnormal.
protect_from_scaling_down	No	String	Specifies the instance protection status. true: Instance protection is enabled. false: Instance protection is disabled.
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.

Request Message

Request parameters
None

Example request

This example shows how to query enabled, healthy instances in the AS group with ID e5d27f5c-dd76-4a61-b4bc-a67c5686719a.

GET https://{Endpoint}/autoscaling-api/v1/{project_id}/scaling_group_instance/e5d27f5c-dd76-4a61-b4bc-a67c5686719a/list?life_cycle_state=INSERVICE&health_status=NORMAL

Response Message

Response parameters

**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_group_instances	Array of scaling_group_instances objects	Specifies details about the instances in the AS group.

**Table 3** **scaling_group_instances** field description
Parameter	Type	Description
instance_id	String	Specifies the instance ID.
instance_name	String	Specifies the instance name.
scaling_group_id	String	Specifies the ID of the AS group to which the instance belongs.
scaling_group_name	String	Specifies the name of the AS group to which the instance belongs. Supports fuzzy search.
life_cycle_state	String	Specifies the instance lifecycle status in the AS group. INSERVICE: The instance is enabled. PENDING: The instance is being added to the AS group. REMOVING: The instance is being removed from the AS group.
health_status	String	Specifies the instance health status. INITIALIZING: The instance is being initialized. NORMAL: The instance is functional. ERROR: The instance is faulty.
scaling_configuration_name	String	Specifies the AS configuration name.
scaling_configuration_id	String	Specifies the AS configuration ID. If the returned value is not empty, the instance is an ECS automatically created in a scaling action. If the returned value is empty, the instance is an ECS manually added to the AS group.
create_time	String	Specifies the time when the instance is added to the AS group. The time format complies with UTC.
protect_from_scaling_down	Boolean	Specifies the instance protection status.

Example response

{
    "limit": 10,
    "total_number": 1,
    "start_number": 0,
    "scaling_group_instances": [
        {
            "instance_id": "b25c1589-c96c-465b-9fef-d06540d1945c",
            "scaling_group_id": "e5d27f5c-dd76-4a61-b4bc-a67c5686719a",
            "scaling_group_name": "discuz",
            "life_cycle_state": "INSERVICE",
            "health_status": "NORMAL",
            "scaling_configuration_name": "discuz",
            "scaling_configuration_id": "ca3dcd84-d197-4c4f-af2a-cf8ba39696ac",
            "create_time": "2015-07-23T06:47:33Z",
            "instance_name": "discuz_3D210808",
            "protect_from_scaling_down": false
        }
    ]
}

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 Instances in an AS Group

Function

URI

Request Message

Response Message

Returned Values

Error Codes