DescribeInstanceRefreshes - Auto Scaling - Alibaba Cloud Documentation Center

Queries instance refresh tasks of a scaling group, including basic information and progress of the tasks.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ess:DescribeInstanceRefreshes

get

*ScalingGroup

acs:ess:{#regionId}:{#accountId}:scalinggroup/{#ScalingGroupId}

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the scaling group.	cn-hangzhou
NextToken	string	No	The pagination token. Set this parameter to the NextToken value returned in the previous call. You do not need to set this parameter for the first request.	caeba0bbb2be03f84eb48b699f0a****
MaxResults	integer	No	The maximum number of entries per page in a paging query. Valid values: 1 to 50. Default value: 10.	10
ScalingGroupId	string	Yes	The ID of the scaling group.	asg-bp1ffogfdauy0jw0****
InstanceRefreshTaskId	array	No	The ID of the instance refresh task that you want to query.
	string	No	The ID of the instance refresh task that you want to query. Valid values of N: 1 to 20.	ir-adfa12312*****

Response elements

Element	Type	Description	Example
	object
RequestId	string	The request ID.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3****
NextToken	string	The pagination token for the next query. If NextToken is empty, no more results exist.	caeba0bbb2be03f84eb48b699f****
MaxResults	integer	The maximum number of entries per page.	50
TotalCount	integer	The total number of instance refresh tasks.	100
InstanceRefreshTasks	object
InstanceRefreshTask	array<object>	The list of instance refresh tasks.
	array<object>	The instance refresh task.
InstanceRefreshTaskId	string	The ID of the instance refresh task.	ir-1adfa123****
ScalingGroupId	string	The ID of the scaling group.	asg-bp16pbfcr8j9*****
RegionId	string	The region ID of the scaling group.	cn-hangzhou
EndTime	string	The end time of the instance refresh task.	2024-08-22T02:09:00Z
StartTime	string	The start time of the instance refresh task.	2024-08-22T01:09:00Z
Status	string	The current status of the instance refresh task. Valid values: Pending: The instance refresh task is created and waiting to be scheduled. InProgress: The instance refresh task is in progress. Paused: The instance refresh task is paused. CheckpointPause: The instance refresh task is paused because the task progress reached a checkpoint (`Checkpoint.Percentage`). Failed: The instance refresh task failed. Successful: The instance refresh task succeeded. Cancelling: The instance refresh task is being cancelled. Cancelled: The instance refresh task is cancelled. RollbackInProgress: The instance refresh task is being rolled back. RollbackSuccessful: The instance refresh task is rolled back. RollbackFailed: The rollback of the instance refresh task failed.	InProgress
Detail	string	The specific failure reason when the instance refresh task fails.	The task exceeded its maximum run time of one week. So the task failed.
MinHealthyPercentage	integer	The minimum percentage of instances that must remain in service in the scaling group during the instance refresh.	80
MaxHealthyPercentage	integer	The maximum percentage by which the number of instances in the scaling group can exceed the scaling group capacity during the instance refresh.	120
DesiredConfiguration	object	The desired configuration for the instance refresh.
ImageId	string	The ID of the image file used for automatic creation of instances.	m-uf6g5noisr****
ScalingConfigurationId	string	The ID of the scaling configuration.	asc-wz91ibkhfor****
LaunchTemplateId	string	The ID of the launch template used by the scaling group to obtain launch configuration information.	lt-2ze5x4mp*****
LaunchTemplateVersion	string	The version of the launch template. Valid values: A fixed template version number. Default: always uses the default version of the template. Latest: always uses the latest version of the template.	Latest
LaunchTemplateOverrides	object
LaunchTemplateOverride	array<object>	The instance type information that extends the launch template.
	object	The instance type information that extends the launch template.
InstanceType	string	The specified instance type, which overrides the instance type in the launch template.	ecs.g7.2xlarge
Containers	object
Container	array<object>	The list of containers included in the instance.
	array<object>	The list of containers included in the instance.
Name	string	The custom container name.	name
Image	string	The container image.	registry-vpc.cn-hangzhou.aliyuncs.com/eci_open/nginx:latest
Commands	object
Command	array	The container startup command.
	string	The container startup command.	sleep
EnvironmentVars	object
EnvironmentVar	array<object>	The environment variable information.
	object	The environment variable information.
Key	string	The name of the environment variable.	PATH
Value	string	The value of the environment variable.	/usr/local/bin
FieldRefFieldPath	string	Note This parameter is not available for use.	fieldPath
Args	object
Arg	array	The arguments for the container startup command.
	string	The arguments for the container startup command.	100
FinishedUpdateCapacity	integer	The capacity that has been refreshed.	10
TotalNeedUpdateCapacity	integer	The total capacity that needs to be refreshed.	20
SkipMatching	boolean	Specifies whether to skip instances that match the desired configuration. Note The system determines whether an instance matches based on the ID of the desired scaling configuration, not by comparing specific configuration items. Valid values: true: Skipped. When the instance refresh task starts, the system checks the configuration of each instance. Instances that were already created with the desired configuration are not refreshed. false: Not skipped. After the instance refresh task starts, all instances in the scaling group are refreshed.	true
CheckpointPauseTime	integer	The duration for which the task pauses when a checkpoint is reached. Unit: minutes.	30
Checkpoints	object
Checkpoint	array<object>	The checkpoint of the refresh task. Specifies that the task automatically pauses for CheckpointPauseTime minutes when the proportion of new instances reaches the specified value during the instance refresh.
	object	The checkpoint of the refresh task. Specifies that the task automatically pauses for CheckpointPauseTime minutes when the proportion of new instances reaches the specified value during the instance refresh.
Percentage	integer	The percentage of new instances relative to the total instances in the scaling group. The task automatically pauses when this percentage is reached.	60
Strategy	string

Examples

Success response

JSON format

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "NextToken": "caeba0bbb2be03f84eb48b699f****",
  "MaxResults": 50,
  "TotalCount": 100,
  "InstanceRefreshTasks": {
    "InstanceRefreshTask": [
      {
        "InstanceRefreshTaskId": "ir-1adfa123****",
        "ScalingGroupId": "asg-bp16pbfcr8j9*****",
        "RegionId": "cn-hangzhou",
        "EndTime": "2024-08-22T02:09:00Z",
        "StartTime": "2024-08-22T01:09:00Z",
        "Status": "InProgress",
        "Detail": "The task exceeded its maximum run time of one week. So the task failed.",
        "MinHealthyPercentage": 80,
        "MaxHealthyPercentage": 120,
        "DesiredConfiguration": {
          "ImageId": "m-uf6g5noisr****",
          "ScalingConfigurationId": "asc-wz91ibkhfor****",
          "LaunchTemplateId": "lt-2ze5x4mp*****",
          "LaunchTemplateVersion": "Latest",
          "LaunchTemplateOverrides": {
            "LaunchTemplateOverride": [
              {
                "InstanceType": "ecs.g7.2xlarge"
              }
            ]
          },
          "Containers": {
            "Container": [
              {
                "Name": "name",
                "Image": "registry-vpc.cn-hangzhou.aliyuncs.com/eci_open/nginx:latest",
                "Commands": {
                  "Command": [
                    "sleep"
                  ]
                },
                "EnvironmentVars": {
                  "EnvironmentVar": [
                    {
                      "Key": "PATH",
                      "Value": "/usr/local/bin",
                      "FieldRefFieldPath": "fieldPath"
                    }
                  ]
                },
                "Args": {
                  "Arg": [
                    "100"
                  ]
                }
              }
            ]
          }
        },
        "FinishedUpdateCapacity": 10,
        "TotalNeedUpdateCapacity": 20,
        "SkipMatching": true,
        "CheckpointPauseTime": 30,
        "Checkpoints": {
          "Checkpoint": [
            {
              "Percentage": 60
            }
          ]
        },
        "Strategy": ""
      }
    ]
  }
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.