A complete reference of all APIs by function - Auto Scaling - Alibaba Cloud - Auto Scaling

API standards and multilingual preset SDKs

The OpenAPI of this product (Ess/2022-02-22) uses the RPC signature style. We have encapsulated SDKs for common programming languages for developers. Developers can download the SDK to directly call this product's OpenAPI without worrying about technical details. If the existing SDK does not meet your needs, you can use the signature mechanism for self-signing integration. Since the details of self-signing are very complex, it may take around 5 business days. Therefore, we recommend joining our DingTalk service group (147535001692) and conducting signature integration under expert guidance.

Before using the API, you need to prepare your identity account and access key (AccessKey) to effectively access the API through client tools (such as SDK and CLI). For details, see Obtain an AccessKey.

Custom signature scenarios

If your business scenario has special requirements and you need to integrate the API through self-signing, we recommend consulting our technical support team first (DingTalk service group: 147535001692) to obtain professional guidance and ensure efficient integration.

Account and security preparation

Alibaba Cloud accounts have full administrative permissions over all resources. Once an AccessKey is compromised, all associated resources will be at risk of unauthorized access. To ensure security, it is recommended to create a RAM user with only API access permissions and configure its AccessKey, while configuring RAM policies based on the principle of least privilege (PoLP). Use the Alibaba Cloud account only in specific scenarios where Alibaba Cloud account permissions are explicitly required.

Scaling group

API	Title	Description
CreateScalingGroup	CreateScalingGroup	Call the `CreateScalingGroup` API to create a scaling group. The group automatically adjusts your computing capacity (the number of instances) by scaling instances of a specified type in or out based on your business requirements and scaling policies.
ModifyScalingGroup	ModifyScalingGroup	Modifies a scaling group. If you want to enable policy-based automatic addition or removal of instances of a specific type to meet evolving business requirements, you can modify scaling groups to adjust your computing power with ease. The computing power refers to the instances that provide the computing capability. When your scaling group cannot meet your business requirements, you can call the ModifyScalingGroup operation to modify scaling group attributes such as the maximum, minimum, and expected numbers of instances. This prevents repeated creation and configuration of scaling groups, which saves you a lot of time and resource costs.
EnableScalingGroup	EnableScalingGroup	Enables a scaling group. If a scaling group is in the Disabled state and contains an instance configuration source such as a launch template or a scaling configuration, you can call the EnableScalingGroup operation to enable the scaling group. This operation permits Auto Scaling to dynamically adjust the computing power (also known as the number of instances) in the scaling group based on your business requirements.
DisableScalingGroup	DisableScalingGroup	Disables a scaling group. If you temporarily do not require a scaling group that is in the Enabled state, you can call the DisableScalingGroup operation to disable it.
SetGroupDeletionProtection	SetGroupDeletionProtection	Sets deletion protection for a scaling group. If you enable deletion protection for a scaling group, you cannot delete the scaling group. If you disable deletion protection for a scaling group, you can directly delete the scaling group. You can call the SetGroupDeletionProtection operation to enable or disable deletion protection.
DeleteScalingGroup	DeleteScalingGroup	Deletes a scaling group. If you want to enable policy-based automatic addition or removal of instances of a specific type to meet evolving business requirements, you can create scaling groups to manage your computing power with ease. The computing power refers to the instances that provide the computing capability. If you no longer require a scaling group, you can call the DeleteScalingGroup operation to delete it to free up the scaling group quota.
DescribeScalingGroups	DescribeScalingGroups	Queries information about scaling groups, such as the basic information, instances, and scaling configurations.
DescribeScalingGroupDetail	DescribeScalingGroupDetail	Queries a scaling group. You can call the DescribeScalingGroupDetail operation to query the basic information, instances, and scaling configurations of a scaling group. If you set OutputFormat to YAML for a scaling group of the Elastic Container Instance type, the output is a Kubernetes Deployment file in the YAML format.
DescribeScalingInstances	Query ECS instances in a scaling group	Calls DescribeScalingInstances to query the list and information of ECS instances in a scaling group by scaling group ID, including the total number of running spot instances, the total number of ECS instances, the warmup state of ECS instances, and the lifecycle state in the current scaling group. You can also filter ECS instances by health check status, lifecycle state, or creation type.
DescribeScalingActivities	DescribeScalingActivities	Queries scaling activities. You can call the DescribeScalingActivities operation to query the results of scaling activities triggered by scheduled tasks, event-triggered tasks, or manual execution of scaling rules. For example, you can query the status and cause of a scaling activity. You can also query the total number of instances after a scaling activity is complete.
DescribeScalingActivityDetail	DescribeScalingActivityDetail	Queries the details of a scaling activity. You can query a scaling activity by its ID. The scaling activity details include the scaling activity status, error code, and error message. You can efficiently troubleshoot issues and analyze service performance based on the error message.
AttachLoadBalancers	AttachLoadBalancers	Attaches load balancers to a scaling group. Auto Scaling supports the attachment of load balancers to scaling groups. Load balancers help distribute the access traffic to the instances in scaling groups, which effectively improves the service performance of the scaling groups. You can call the AttachLoadBalancers operation to attach one or more load balancers to your scaling group.
DetachLoadBalancers	DetachLoadBalancers	Detaches Classic Load Balancer (CLB, formerly known as Server Load Balancer or SLB) instances from a scaling group. If the current CLB instance no longer meets your business requirements, you can call the DetachLoadBalancers operation to detach it from your scaling group. When you call this operation, you can use ScalingGroupId, LoadBalancer.N, and ForceDetach to specify one or more CLB instances to detach. You can also determine whether to call this operation asynchronously and whether to remove the Elastic Compute Service (ECS) instances acting as backend servers from the backend server groups of the CLB instance. You can call this operation to detach only CLB instances from a scaling group.
AttachDBInstances	AttachDBInstances	Associates one or more ApsaraDB RDS instances with a scaling group.
DetachDBInstances	DetachDBInstances	Detaches one or more ApsaraDB RDS instances from a scaling group. If you want to decrease the number of ApsaraDB RDS instances attached to your scaling group, you can call the DetachDBInstance operation. This operation liberates ApsaraDB RDS instances from your scaling group, thereby significantly boosting the agility and efficiency in managing and allocating your resources.
SuspendProcesses	SuspendProcesses	Suspends scaling processes. This operation empowers you to selectively pause distinct scaling processes within a particular scaling group, enabling you to carry out alternative tasks and achieve more granular management over your scaling operations.
ResumeProcesses	ResumeProcesses	Resumes suspended processes in a scaling group. This operation allows Auto Scaling to proceed with executing these processes according to their predefined rules and logic. For example, if you resume the health check process in your scaling group, Auto Scaling automatically detects and removes any instances deemed unhealthy from the scaling group.
AttachVServerGroups	AttachVServerGroups	Attaches vServer groups to a scaling group. After a Classic Load Balancer (CLB) instance is attached to your scaling group, the instances in the scaling group are automatically added as backend servers of the CLB instance. These servers then handle requests forwarded by the CLB instance, streamlining the processing of incoming traffic. To direct varying access requests to separate backend servers or to distribute requests based on domain names or URLs, you can call the AttachVServerGroups operation. This operation enables the addition of multiple vServer groups, allowing for efficient management of various backend server configurations tailored to your routing preferences.
DetachVServerGroups	DetachVServerGroups	Detaches vServer groups from a scaling group. Auto Scaling supports the attachment of load balancers to scaling groups to improve service performance. If the load balancer currently attached to your scaling group is no longer needed to distribute the access traffic to the instances in your scaling group, you can call the DetachVServerGroups operation to detach one or more vServer groups of this load balancer from the scaling group.
AttachAlbServerGroups	AttachAlbServerGroups	Attaches Application Load Balancer (ALB) server groups to a scaling group. To seamlessly adjust the number of instances in response to changes in your business workload or to maintain the uninterrupted accessibility of your application, you can call the AttachAlbServerGroups operation. By attaching ALB server groups to your scaling group, this operation enables Auto Scaling to automatically tailor your computing capacity to your business needs. Furthermore, it optimizes traffic routing by dynamically allocating incoming requests based on current workload patterns, which significantly improves the stability and performance of your application.
DetachAlbServerGroups	DetachAlbServerGroups	Detaches Application Load Balancer (ALB) server groups from a scaling group. When you call the DetachAlbServerGroups operation, you can specify the scaling group ID, ALB server group ID, and port used by Elastic Compute Service (ECS) instances in the desired ALB server group to detach one or more ALB server groups from your scaling group.
AttachServerGroups	AttachServerGroups	Attaches server groups to a scaling group. To seamlessly adjust the number of instances in response to changes in your business workload or to maintain the uninterrupted accessibility of your application, you can call the AttachServerGroups operation. By attaching Application Load Balancer (ALB), Network Load Balancer (NLB), or Gateway Load Balancer (GWLB) server groups to your scaling group, this operation enables Auto Scaling to automatically tailor your computing capacity to your business needs. Furthermore, it optimizes traffic routing by dynamically allocating incoming requests based on current workload patterns, which significantly improves the stability and performance of your application.
DetachServerGroups	DetachServerGroups	Remove one or more SLB server groups from a scaling group. Supported server group types include Application Load Balancer (ALB), Network Load Balancer (NLB), and Gateway Load Balancer (GWLB), which can dynamically adjust SLB policies and help improve high availability of the system.
DescribeElasticStrength	DescribeElasticStrength	A scaling group's configuration is key to successful scale-outs. Auto Scaling uses elasticity strength to quantify the effectiveness of a Scaling Configuration, helping you make targeted optimizations.

Scaling configuration

API	Title	Description
CreateScalingConfiguration	Create an eCS-type scaling configuration	Creates an ECS-type scaling configuration for a scaling group by calling the CreateScalingConfiguration operation and specifying information such as the scaling group ID, instance type, and instance image.
DescribeScalingConfigurations	Query eCS-type scaling configurations	Queries information about ECS-type scaling configurations, including instance types and images, so that you can learn about the ECS instance templates used for elastic scale-out in advance.
ModifyScalingConfiguration	Modify an eCS-type scaling configuration	Modifies an ECS-type scaling configuration (the ECS instance template for scale-out) by invoking the ModifyScalingConfiguration operation if the current scaling configuration does not meet your business requirements.
DeleteScalingConfiguration	DeleteScalingConfiguration	Deletes a scaling configuration that is used to create Elastic Compute Service (ECS) instances.
CreateEciScalingConfiguration	CreateEciScalingConfiguration	Creates a scaling configuration of the Elastic Container Instance type. Auto Scaling uses the scaling configuration as a template to create elastic container instances to meet your business requirements during scale-out events.
DescribeEciScalingConfigurations	DescribeEciScalingConfigurations	Queries scaling configurations of the Elastic Container Instance type. When you call the DescribeEciScalingConfigurations operation, you can specify ScalingGroupId, ScalingConfigurationIds, or ScalingConfigurationNames to query details about the desired scaling configurations, such as the instance bidding policy, instance type, image pulling policy, and load balancing weight of each elastic container instance. This can help you select a suitable template for creating elastic container instances or reference existing scaling configurations before you modify the automatic scaling policy for elastic container instances.
ModifyEciScalingConfiguration	ModifyEciScalingConfiguration	Modifies a scaling configuration of the Elastic Container Instance type. When you call the ModifyEciScalingConfiguration operation, you can specify the ID, name, and instance properties of the scaling configuration whose information you want to modify. You can modify the instance restart policy, instance bidding policy, and elastic IP address (EIP) bandwidth.
ApplyEciScalingConfiguration	ApplyEciScalingConfiguration	Applies a scaling configuration of the Elastic Container Instance type. If you want to create and manage scaling configurations of the Elastic Container Instance type by using a configuration file, you can call the ApplyEciScalingConfiguration operation.
DeleteEciScalingConfiguration	DeleteEciScalingConfiguration	Deletes a scaling configuration of the Elastic Container Instance type. If the scaling configuration of a scaling group is in the Inactive state and the scaling group contains no elastic container instances created from the scaling configuration, you can call the DeleteEciScalingConfiguration operation to delete the scaling configuration to free up the scaling configuration quota.
DescribeCandidateInstanceType	Query candidate instance types	Lists candidate instance types.

Scaling rule

API	Title	Description
CreateScalingRule	Create a scaling rule	The function of a scaling rule is determined by its type, which can be used to trigger a scaling activity or intelligently set the boundary values of a scaling group. Depending on your business requirements, you can invoke the CreateScalingRule API to create different types of scaling rules. For example, if your business only requires setting the boundary values of a scaling group, we recommend that you select the predictive rule type.
ModifyScalingRule	ModifyScalingRule	Modifies a scaling rule. If an existing scaling rule cannot meet your business requirements, you can call the ModifyScalingRule operation to modify the scaling rule, without the need to create a new one. This streamlines your workflow, enhancing operational efficiency while also contributing to cost optimization by avoiding redundant steps.
DescribeScalingRules	DescribeScalingRules	Queries scaling rules. When you call this operation, you can specify the ID, name, or Alibaba Cloud Resource Name (ARN) of a scaling rule to query the details of the scaling rule. For example, you can query the adjustment method, instance warm-up period, and associated event-triggered tasks of the desired scaling rule.
DeleteScalingRule	DeleteScalingRule	Deletes a scaling rule.

Trigger task

API	Title	Description
ExecuteScalingRule	ExecuteScalingRule	Executes a scaling rule. To adjust the number of Elastic Compute Service (ECS) instances or elastic container instances, you can manually execute a scaling rule or enable Auto Scaling to execute a scaling rule. You can call the ExecuteScalingRule operation to execute simple scaling rules or step scaling rules. Auto Scaling automatically executes target tracking scaling rules and predictive scaling rules on your behalf without requiring explicit execution calls.
ScaleWithAdjustment	ScaleWithAdjustment	Unlike the ExecuteScalingRule API, you can use the ScaleWithAdjustment API to trigger elastic scaling based on a specified adjustment rule, without first creating a scaling rule.
AttachInstances	AttachInstances	Adds instances to a scaling group to provide services or restarts Elastic Compute Service (ECS) instances stopped in Economical Mode to provide services. You can call the AttachInstances operation to add ECS instances, elastic container instances, or third-party instances managed by Alibaba Cloud to your scaling group to provide services. You can also call this operation to restart ECS instances stopped in Economical Mode in your scaling group to provide services.
RemoveInstances	RemoveInstances	If a scaling group is enabled and has no ongoing scaling activities, you can call the RemoveInstances API to remove one or more instances from the group.
DetachInstances	DetachInstances	Removes instances from a scaling group. If an enabled scaling group has no ongoing scaling activities, you can call the DetachInstances operation to remove one or more Elastic Compute Service (ECS) instances, elastic container instances, or Alibaba Cloud-hosted third-party instances from the scaling group.

Scheduled task

API	Title	Description
CreateScheduledTask	CreateScheduledTask	Creates a scheduled task. A scheduled task is a type of scaling task that enables automatic execution of a specific scaling rule at a specified point in time. You can call the CreateScheduledTask operation to create a scheduled task to implement automatic scaling of computing resources. This ensures your business continuity and minimizes resource costs.
ModifyScheduledTask	ModifyScheduledTask	Modifies a scheduled task. If an existing scheduled task cannot meet your business requirements, you can call the ModifyScheduledTask operation to adjust its parameter settings including the scaling rule to execute and the boundary values of your scaling group, without the need to create a new scheduled task. This operation provides a flexible way to optimize scheduled tasks.
DescribeScheduledTasks	DescribeScheduledTasks	Queries scheduled tasks. A scheduled task is a predefined task that triggers the automatic execution of a scaling rule at the specified point in time. It ensures an automatic scaling of computing resources to fulfill your business demands at a minimum cost. After you create a scheduled task, you can call the DescribeScheduledTasks operation to query the details of the task, such as the execution time point and the scaling group ID. You can also call this operation to query the total number of existing scheduled tasks.

Event-triggered task

API	Title	Description
CreateAlarm	CreateAlarm	Creates event-triggered tasks. If your business encounters unexpected traffic surges or has no specific patterns, you can call the CreateAlarm operation to create an event-triggered task and associate a CloudMonitor metric with the task. This allows you to dynamically adjust the number of Elastic Compute Service (ECS) instances or elastic container instances in your scaling group and keep updated on the real-time metric data, which facilitates cloud resource management and maintenance.
DescribeAlarms	DescribeAlarms	Queries event-triggered tasks. You can call the DescribeAlarms operation to learn about the configurations of event-triggered tasks and keep updated on monitoring data changes. This helps you troubleshoot system resource issues at the earliest opportunity and ensures system stability and reliability.
ModifyAlarm	ModifyAlarm	Modifies an event-triggered task.
EnableAlarm	EnableAlarm	Enables an event-triggered task. If your business pattern is unpredictable or prone to unforeseen traffic spikes, you can create event-triggered tasks by associating CloudMonitor metrics to effectively monitor fluctuations in your business workload. Upon detecting that the criteria for alerts, as specified in event-triggered tasks, are fulfilled, Auto Scaling promptly issues alerts and executes the scaling rules predefined within those tasks. This process occurs within the predefined effective time windows of the tasks, thereby facilitating the automatic increase or decrease of Elastic Compute Service (ECS) instances or elastic container instances within your scaling groups. Ultimately, this mechanism ensures the dynamic optimization of resources based on real-time workload demands. If you want to reuse an event-triggered task that is in the Disabled state, you can call the EnableAlarm operation to enable it.
DisableAlarm	DisableAlarm	Disables an event-triggered task. If your business pattern is unpredictable or prone to unforeseen traffic spikes, you can create event-triggered tasks by associating CloudMonitor metrics to effectively monitor fluctuations in your business workload. Upon detecting that the criteria for alerts, as specified in event-triggered tasks, are fulfilled, Auto Scaling promptly issues alerts and executes the scaling rules predefined within those tasks. This process occurs within the predefined effective time windows of the tasks, thereby facilitating the automatic increase or decrease of Elastic Compute Service (ECS) instances or elastic container instances within your scaling groups. Ultimately, this mechanism ensures the dynamic optimization of resources based on real-time workload demands. If you currently do not need an event-triggered task, you can call the DisableAlarm operation to disable it.
DeleteAlarm	DeleteAlarm	Deletes an event-triggered task. If your business pattern is unpredictable or prone to unforeseen traffic spikes, you can create event-triggered tasks by associating CloudMonitor metrics to effectively monitor fluctuations in your business workload. Upon detecting that the criteria for alerts, as specified in event-triggered tasks, are fulfilled, Auto Scaling promptly issues alerts and executes the scaling rules predefined within those tasks. This process occurs within the predefined effective time windows of the tasks, thereby facilitating the automatic increase or decrease of Elastic Compute Service (ECS) instances or elastic container instances within your scaling groups. Ultimately, this mechanism ensures the dynamic optimization of resources based on real-time workload demands. If you no longer need an event-triggered task, you can call the DeleteAlarm operation to delete it.

Instance refresh

API	Title	Description
DescribeInstanceRefreshes	Query instance refresh tasks	Queries instance refresh tasks in a scaling group, including basic information and progress of the tasks.
StartInstanceRefresh	Start an instance refresh task	Refreshes instances in a scaling group when you need to apply a new scaling configuration or update the image of instances in the scaling group.

Lifecycle hook

API	Title	Description
CreateLifecycleHook	CreateLifecycleHook	Creates one or more lifecycle hooks in a scaling group. A lifecycle hook allows you to execute custom actions like sending notifications or automating script execution at critical stages (such as instance startup and termination) in the lifecycle of an instance. Implementing the lifecycle hook feature allows for finer control and management of instances. For example, you can verify configurations, set up custom tasks, or back up data on your instances when lifecycle hooks take effect, thus enhancing the flexibility and reliability of application deployment.
ModifyLifecycleHook	ModifyLifecycleHook	Modifies a lifecycle hook. If an existing lifecycle hook does not meet your business requirements anymore, you can call the ModifyLifecycleHook operation to modify the information such as the scaling event, timeout period, and default action of the lifecycle hook. Before you modify a lifecycle hook, you can locate the lifecycle hook by its ID, name, or scaling group.
DescribeLifecycleHooks	DescribeLifecycleHooks	Queries lifecycle hooks. When you call this operation, you can specify the lifecycle hook ID or scaling group ID to query the details of the desired lifecycle hook, such as the default action after the lifecycle hook times out, scaling activity that corresponds to the lifecycle hook, Alibaba Cloud Resource Name (ARN) of the notification recipient, and effective period of the lifecycle hook.
RecordLifecycleActionHeartbeat	RecordLifecycleActionHeartbeat	Extends the time window during which Elastic Compute Service (ECS) instances stay in a Pending state. If the current time window during which an ECS instance stays in a Pending state is not sufficient for you to complete custom operations on the ECS instance, you can call the RecordLifecycleActionHeartbeat operation to extend the time window. When you call this operation, you can specify lifecycleHookId, lifecycleActionToken, and heartbeatTimeout to extend the time window for the desired ECS instance.
DescribeLifecycleActions	DescribeLifecycleActions	Queries lifecycle hook actions. When you call the DescribeLifecycleActions operation, you can specify parameters such as ScalingActivityId, NextToken, and MaxResults to query the details such as the action status and ID of a lifecycle hook. You can also call this operation to query the IDs of Elastic Compute Service (ECS) instances on which the lifecycle hook takes effect.
CompleteLifecycleAction	CompleteLifecycleAction	Ends the timeout period of a lifecycle hook ahead of schedule. If you have created a lifecycle hook for your scaling group, you can call the CompleteLifecycleAction operation to end the timeout period of the lifecycle hook ahead of schedule based on your business requirements.
DeleteLifecycleHook	DeleteLifecycleHook	Deletes a lifecycle hook. If you no longer require a lifecycle hook, you can call the DeleteLifecycleHook operation to delete it, which frees up the lifecycle hook quota.

Event notification

API	Title	Description
CreateNotificationConfiguration	CreateNotificationConfiguration	Creates a notification rule. You can call the CreateNotificationConfiguration operation to create a notification rule to stay informed about scaling events or resource changes. This helps you learn about the dynamic status of your scaling group in real time and further automates the management of scaling events.
ModifyNotificationConfiguration	ModifyNotificationConfiguration	Modifies event notification rules. Event notification rules support automatic sending of notifications to CloudMonitor, Message Service (MNS) topics, or MNS queues when a specified type of events occur. This helps you learn about the dynamics of your scaling group at the earliest opportunity and further automate resource management. If an existing event notification rule does not meet your business requirements, you can call the ModifyNotificationConfiguration operation to modify the event notification rule, without the need to create a new rule. Take not that you cannot modify the notification method of an event notification rule by calling this operation.
DescribeNotificationConfigurations	DescribeNotificationConfigurations	Queries notification settings. You can call the DescribeNotificationConfiguration operation to query notification settings of scaling events or resource changes, including the notification types and methods.

Health diagnostics

API	Title	Description
DescribeDiagnoseReports	DescribeDiagnoseReports	DescribeDiagnoseReports
DescribeScalingGroupDiagnoseDetails	Query the Latest Diagnostics Details of a Scaling Group	DescribeScalingGroupDiagnoseDetails

Instance

API	Title	Description
EnterStandby	EnterStandby	Puts an Elastic Compute Service (ECS) instance into the Standby state.
ExitStandby	ExitStandby	Removes an instance from the Standby state. When a scale-in event is triggered in a scaling group, Auto Scaling does not remove Elastic Compute Service (ECS) instances or elastic container instances that are in the Standby state from the scaling group. If you want to restart the instances that are in the Standby state, you can call the ExitStandby operation to remove the instances from the Standby state and put them into the In Service state.
RebalanceInstances	RebalanceInstances	Rebalances the distribution of Elastic Compute Service (ECS) instances across zones. If ECS instances are unevenly distributed across multiple zones, you can call the RebalanceInstances operation to rebalance the distribution of the ECS instances across the zones.
SetInstanceHealth	SetInstanceHealth	Sets instance health. At times, the automatic health check system might not sufficiently determine the precise health status of your Elastic Compute Service (ECS) instances or elastic container instances. To overcome this, you can call the SetInstanceHealth operation to swiftly pinpoint problematic instances and resolve issues. This operation is designed to more precisely align with real-world business requirements and tackle O\\\&M hurdles efficiently.
SetInstancesProtection	SetInstancesProtection	Puts or removes Elastic Compute Service (ECS) instances into or from the Protected state. After you put an ECS instance into the Protected state, the ECS instance will not be stopped or released when a scale-in event is triggered. In this case, you can manually delete the ECS instance in the Auto Scaling console or by calling the RemoveInstances operation.

Region

API	Title	Description
ModifyInstanceAttribute	ModifyInstanceAttribute	Modifies the information of an Elastic Compute Service (ECS) instance. When you call the ModifyInstanceAttribute operation, you can specify attributes such as the instance ID, scaling group ID, and region ID to modify the attributes of an ECS instance in a scaling group. You can modify only the hosting attributes of instances that are manually added to scaling groups.
DescribeInstanceCreateAndDeleteStatistics	DescribeInstanceCreateAndDeleteStatistics	Instance creation and deletion statistics.
QueryPredictiveValue	QueryPredictiveValue	Queries the predicted number of instances in a scaling group.
QueryHistoricalMetric	QueryHistoricalMetric	Queries the historical monitoring data of a scaling group that uses predictive scaling rules.
QueryPredictiveTaskInfo	QueryPredictiveTaskInfo	Queries the information about a prediction task.
QueryPredictiveMetric	QueryPredictiveMetric	Queries predicted monitoring data.
DeleteDiagnoseReport	DeleteDiagnoseReport	Deletes a health diagnosis report for a scaling group.
DescribeScalingActivityStatistics	DescribeScalingActivityStatistics	The distribution of scaling activities in different states over a period of time.

Tag

API	Title	Description
ApplyScalingGroup	ApplyScalingGroup	Creates and manages scaling groups by using configuration files. You can call the ApplyScalingGroup operation to create and manage scaling groups by using configuration files with efficiency.
CancelInstanceRefresh	CancelInstanceRefresh	Cancels an instance refresh task. Take note that instances whose configurations were already updated by running an instance refresh task remain intact even after you cancel the task.
ChangeResourceGroup	ChangeResourceGroup	Changes a resource group. Resource groups are a means to categorize and manage cloud resources, such as scaling groups, based on specific objectives, permissions, or ownership. In large, multifaceted organizations that manage numerous projects and users, this feature adopts a tiered management approach, simplifying management tasks and improving the effectiveness and oversight of resource allocation. You can call the ChangeResourceGroup operation to move your scaling groups from one resource group to another resource group, which facilitates streamlined monitoring and management within the context of the new group. This operation eliminates the need for repetitive and time-consuming cross-service resource queries, thereby enhancing operational efficiency.
CreateDiagnoseReport	CreateDiagnoseReport	Creates a diagnostic report.
DeleteNotificationConfiguration	DeleteNotificationConfiguration	Deletes event notification rules. The event notification feature facilitates efficient issue identification and event management by automatically forwarding notifications from Auto Scaling to designated endpoints such as CloudMonitor or Message Service (MNS) topics and queues. If you no longer require an event notification rule, you can call the DeleteNotificationConfiguration operation to delete it.
DeleteScheduledTask	DeleteScheduledTask	Deletes scheduled tasks. For workloads with predictable patterns, you can create scheduled tasks to align with your business requirements and optimize resource utilization for cost savings. These tasks automatically ensure that sufficient computing resources are provisioned in anticipation of peak hours and efficiently release unused resources during off-peak hours, thereby streamlining operational efficiency and reducing expenses. If you no longer require a scheduled task, you can call the DeleteScheduledTask operation to delete it.
DescribeAlertConfiguration	DescribeAlertConfiguration	Queries the status of scaling activities that trigger text message, internal message, or email-based notifications. When you call the DescribeAlertConfiguration operation, you must specify the scaling group ID and region ID to query the status of the desired scaling activities. A scaling activity can be in one of the following states: Successful, Failed, and Rejected.
DescribeEciScalingConfigurationDetail	DescribeEciScalingConfigurationDetail	Queries the details of a scaling configuration. You can query a scaling configuration by its ID to learn about its details such as the temporary storage size, number of IPv6 addresses, and bandwidth of the elastic IP address (EIP). The scaling configuration details can be obtained as a YAML file.
DescribeLimitation	DescribeLimitation	Queries resource quotas. For example, you can call the DescribeLimitation operation to query the maximum numbers of scheduled tasks that you can create in a scaling group, load balancers that you can attach to a scaling group, instances that you can add to a scaling group, and scaling configurations that you can create in a scaling group.
DescribeNotificationTypes	DescribeNotificationTypes	Queries notification types. You can call the DescribeNotificationTypes operation to query the types of notifications on scaling events or resource changes occurred in your scaling groups. Notifications are triggered in scenarios such as successful scale-out events, successful scale-in events, expiration of scheduled tasks, and partially successful scale-out events.
DescribePatternTypes	DescribePatternTypes	Queries instance types. When you call the DescribePatternTypes operation, you can specify attributes such as the vSwitch ID, number of vCPUs, memory size, instance family, and maximum acceptable price to filer instance types that meet your business requirements.
DescribeRegions	DescribeRegions	Queries regions. Before you activate Auto Scaling, you can call the DescribeRegions operation to query the regions where Auto Scaling is officially launched. This preliminary step facilitates the strategic selection of both the optimal region and availability zones for activating Auto Scaling, thereby guaranteeing the finest access speeds and operational efficiency within your chosen geographical area.
ListTagKeys	ListTagKeys	Queries the tag keys added to Auto Scaling resources. Querying tag keys facilitates easier classification, identification, and monitoring of your Auto Scaling resources, thereby enhancing the flexibility and convenience of your resource management processes.
ListTagResources	ListTagResources	Queries tags. You can call the ListTagResources operation to query tags that are added to Auto Scaling resources, thereby clarifying resource utilization and facilitating efficient resource management. This operation aids in the automation of resource categorization and permission management processes.
ListTagValues	ListTagValues	Queries the tag keys associated with Auto Scaling resources to facilitate a deeper comprehension of those resources. By doing so, you can categorize and manage your Auto Scaling resources more efficiently.
ModifyAlertConfiguration	ModifyAlertConfiguration	Sets the status of scaling activities that prompt text message or email notifications.
ResumeInstanceRefresh	ResumeInstanceRefresh	Resumes an instance refresh task.
RollbackInstanceRefresh	RollbackInstanceRefresh	Rolls back an instance refresh task. If an instance refresh task cannot meet your business requirements, you can call the RollbackInstanceRefresh operation. When you roll back an instance refresh task, Auto Scaling creates new instances based on the active scaling configuration to replace the instances whose configurations are already updated by running the task.
SuspendInstanceRefresh	SuspendInstanceRefresh	Suspends an instance refresh task. If you are not sure that you want to roll back an ongoing instance refresh task whose configurations you think has an issue, you can call the SuspendInstanceRefresh operation to suspend the task.
TagResources	TagResources	Creates and adds tags. You can call the TagResources operation to uniformly create and attach tags to your Auto Scaling resources, streamlining resource management. This capability empowers you to categorize resources based on tags, thereby enhancing the overall efficiency of resource allocation and utilization.
UntagResources	UntagResources	Removes tags from Auto Scaling resources simultaneously. This operation streamlines resource management activities, enhances system efficiency, and mitigates potential security vulnerabilities. Once a tag is removed from a particular resource, and if it is not re-added to any other resource, the system will automatically delete the unused tag.
VerifyAuthentication	VerifyAuthentication	Checks whether the specified Alibaba Cloud account assumes the AliyunServiceRoleForAutoScaling service-linked role. An account can be used to operate Elastic Compute Service (ECS) instances and elastic container instances only after it assumes the service-linked role.
VerifyUser	VerifyUser	Verifies whether Auto Scaling is activated. This operation guarantees that in response to shifts in business workloads or variations in incoming traffic, the system will automatically adjust resource provisioning. This auto-scaling capability enhances the overall system performance, ensuring high availability and improved flexibility to accommodate dynamic demands.