This topic describes the release notes for Auto Scaling and provides links to the relevant references.
March 2023
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for the health diagnosis feature | The health diagnosis feature of Auto Scaling is supported. You can use the health diagnosis feature to check the health status of your scaling group in a comprehensive manner. This way, you can detect exceptions in your scaling group at the earliest opportunity and resolve common issues. This improves the success rate of your scaling activities. | 2023-03-21 | All regions | Health check |
February 2023
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Association with Network Load Balancer (NLB) instances | NLB instances can be associated with scaling groups. After you associate an NLB instance with a scaling group, Auto Scaling adds the Elastic Compute Service (ECS) instances or elastic container instances that are added to the scaling group as backend servers of the associated NLB instance. This way, the NLB instance can forward access requests to backend servers in an efficient manner. | 2023-02-03 | All regions |
January 2023
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Update of the Containers settings | The Containers settings in scaling configurations that are used to create elastic container instances can be updated in full update and incremental update mode. You can select an update mode based on your business requirements. | 2023-01-03 | All regions | ModifyEciScalingConfiguration |
| Query of the image source | The image source of a scaling configuration can be queried. You can call the DescribeScalingConfigurations API operation to query the image source of your scaling group. The image source of your scaling configuration can be a public image, a custom image, or an Alibaba Cloud Marketplace image. | 2023-01-10 | All regions | DescribeScalingConfigurations |
December 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Addition of scaling groups to resource groups | Scaling groups can be added to resource groups. When you create a scaling group, you can specify a resource group for the scaling group and grant specific permissions to the resource group. This way, you can manage your scaling groups in a fine-grained manner. | 2022-12-27 | All regions |
November 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
Support for the lifecycleActionResult parameter | The lifecycleActionResult parameter is included in a notification that is sent to the specified Operation Orchestration Service (OOS) template when a lifecycle hook takes effect. This parameter specifies the subsequent action that is performed after a lifecycle hook times out. When the specified OOS template fails to be executed, you can end the lifecycle hook ahead of schedule based on the value of the lifecycleActionResult parameter. | 2022-11-02 | All regions | |
| Support for the SyncActivity parameter | The SyncActivity parameter is supported by scaling groups that have an expected number of instances. Auto Scaling allows you to execute scaling activities in a synchronous or asynchronous manner. Execute scaling activities based on your business requirements to improve the success rate of the activities. | 2022-11-02 | All regions | ScaleWithAdjustment |
October 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for custom scale-in policies (Function) | The CustomPolicy setting is supported for the RemovalPolicy parameter. The CustomPolicyARN parameter is supported to specify custom scale-in policies. You can create custom scale-in policies by using Function to remove ECS instances from a scaling group. This way, you can remove instances from scaling groups in a more flexible manner. | 2022-10-14 | All regions | |
| Support for disabling or enabling lifecycle hooks | Lifecycle hooks can be enabled or disabled. You can enable or disable lifecycle hooks in the Auto Scaling console or by calling the ModifyLifecycleHook operation. Lifecycle hooks that are in the Disabled state do not take effect. We recommend that you enable or disable lifecycle hooks based on your business requirements. | 2022-10-13 | All regions |
August 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for the maximum life span feature of ECS instances | The Maximum Life Span of Instance parameter is supported for scaling groups that contain ECS instances. If the maximum life span of an ECS instance expires, Auto Scaling creates an ECS instance to replace the expired ECS instance. | 2022-08-25 | All regions |
July 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for the cost optimization feature of elastic container instances | The cost optimization feature is supported for scaling groups that contain elastic container instances. After you enable the cost optimization feature, Auto Scaling compares the prices of ECS instance types, and then selects the ECS instance type that is provided at the lowest price to create elastic container instances based on your business requirements. This way, the elastic container instances that host your applications can be scaled in an intelligent manner and at lower costs. | 2022-07-29 | All regions | |
| Support for multi-metric alert rules of event-triggered tasks | Multi-metric alert rules are supported for event-triggered tasks. In a multi-metric alert rule, you can specify whether all metrics must meet the alert conditions before an automatic scaling activity is triggered or only one of the metrics meets the alert condition before an automatic scaling activity is triggered. For example, you can specify that both the CPU utilization and the memory usage must reach the thresholds before a scaling activity is triggered. | 2022-07-27 | All regions | |
| Support for ESSD AutoPL disks | The ESSD AutoPL disks are supported in scaling configurations and launch templates. You can create ECS instances that use ESSD AutoPL disks in scaling groups. ESSD AutoPL disks inherit the features and performance of enhanced SSDs (ESSDs) and provide the capability of decoupling disk capacity from disk performance. | 2022-07-14 | All regions |
June 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for putting elastic container instances into or moving elastic container instances out of the Standby state | The EnterStandby and ExitStandby operations are supported. You can call the EnterStandby operation to put an elastic container instance into the Standby state. You can call the ExitStandby operation to move an elastic container instance out of the Standby state. | 2022-06-29 | All regions | |
| Support for attaching elastic container instances to or detaching elastic container instances from Application Load Balancer (ALB) instances and ApsaraDB RDS instances, and support for adding elastic container instances to or removing elastic container instances from vServer groups and ALB server groups | API operations can be called to attach elastic container instances to or detach elastic container instances from ALB instances and ApsaraDB RDS instances. API operations can be called to add elastic container instances to or remove elastic container instances from one or more vServer groups or ALB server groups. | 2022-06-14 | All regions | |
| Support for filter conditions in intelligent configuration mode | Filter conditions are supported in intelligent configuration mode to help you select instance types in an efficient manner. For example, you can specify the following filter conditions in intelligent configuration mode: the instance types that you want to exclude, the instance architecture, and whether to include burstable instance types. | 2022-06-08 | All regions | |
| Support for the 15-second statistical period by Agent metrics | The 15-second statistical period can be applied to the CpuUtilizationAgent metric. For other metrics, the statistical period can be 60 seconds, 120 seconds, or 900 seconds. | 2022-06-08 | All regions | |
| Support for the ScaleWithAdjustment operation by scaling groups for which an expected number of instances is specified | The ScaleWithAdjustment operation is supported. If you specify an expected number of instances but you do not create scaling rules when you create your scaling group, you can call the ScaleWithAdjustment operation to automate scaling. | 2022-06-06 | All regions | ScaleWithAdjustment |
May 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for lifecycle hooks of elastic container instances | Lifecycle hooks are supported by elastic container instances. You can use lifecycle hooks to manage the lifecycles of elastic container instances in a scaling group. You can use lifecycle hooks to suspend scaling activities that are triggered by Auto Scaling and put elastic container instances into the Pending Add or Pending Remove state. You can perform operations on the elastic container instances until the timeout period of your lifecycle hooks ends. | 2022-05-17 | All regions |
April 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for the AttachInstances and DetachInstances operations by elastic container instances | The AttachInstances operation can be called to add elastic container instances to a scaling group. The DetachInstances operation can be called to remove elastic container instances from a scaling group. | 2022-04-24 | All regions | |
| Support for resource-level authentication and tag-based authentication | Resource-level authentication and tag-based authentication are supported. Different RAM users have different permissions on Auto Scaling resources. | 2022-04-13 | All regions |
February 2022
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for health checks of elastic container instances | Health checks can be performed on elastic container instances in a scaling group at specified intervals. This way, elastic container instances that are unhealthy can be replaced. If an elastic container instance in a scaling group is not in the Running state, Auto Scaling considers the instance unhealthy and creates an elastic container instance to replace the unhealthy instance. | 2022-02-24 | All regions |
November 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for asynchronous interaction | An ECS instance can be put into the Standby state or moved out of the Standby state in an asynchronous manner. | 2021-11-29 | All regions | |
| Support for evaluation of ECS instance availability | The scaling strength feature is provided. You can use this feature to evaluate the availability of ECS instances and improve the success rate of scale-out activities. | 2021-11-28 | All regions | Evaluate resource availability based on scalability |
| Support for automatic notification when errors occur in scaling groups | If your scaling group is abnormal, an error message is displayed in the Auto Scaling console. The error message helps you identify and fix the errors at the earliest opportunity. | 2021-11-16 | All regions | View scaling groups |
| Support for the configuration of capacity reservation | The Capacity Reservation parameter can be configured for ECS instances or elastic container instances when you create or modify a scaling configuration. | 2021-11-02 | All regions |
October 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for automatic scaling of elastic container instances | Elastic container instances can be automatically scaled in a scaling group. | 2021-10-20 | All regions |
September 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Intelligent configuration | Support for intelligent configuration in scaling configurations Intelligent configuration is supported to automatically filter instance types that meet your scale-out requirements. | 2021-09-09 | All regions |
August 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Economical mode | The feature name is changed from No Fees for Stopped Instances (VPC-Connected) to Economical Mode. | 2021-08-09 | All regions |
June 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Association with ALB server groups | ALB server groups can be associated with scaling groups. After you associate an ALB server group with a scaling group, ECS instances that are added to the scaling group are automatically added to the ALB server group as backend servers. ALB instances distribute requests to the ALB server group. | 2021-06-11 | All regions |
March 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Vertical scaling | The specifications of pay-as-you-go instances can be changed. The specifications include the number of vCPUs and the memory size. | 2021-03-31 | All regions | Overview |
February 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Scaling configuration | Weights can be specified for instance types. | 2021-02-12 | All regions |
January 2021
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Scaling configuration | Unique sequential hostnames can be automatically generated. | 2021-01-15 | All regions |
November 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Scaling configuration | The performance levels (PLs) of system disks or data disks of the ESSD category can be specified. | 2020-11-18 | All regions |
October 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Event-triggered task | More statistical methods are supported by event-triggered tasks for custom metrics. | 2020-10-25 | All regions |
September 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Modification of scaling configurations | The images that are specified in scaling configurations can be modified. | 2020-09-24 | All regions | Image update in scaling configurations |
August 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Rolling upgrade | Operation Orchestration Service (OOS) packages can be used to install software. | 2020-08-20 | Some regions | Rolling update |
| Expected number of instances | The expected number of instances in a scaling group can be changed when instances are deleted or removed from the scaling group. | 2020-08-12 | All regions | Expected number of instances |
| Scheduled tasks | The expiration time can be skipped. The maximum recurrence period can be up to one year. | 2020-08-07 | All regions | Create a scheduled task |
July 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Modification of scaling groups | The health check feature can be enabled or disabled for instances in an existing scaling group. | 2020-07-30 | All regions | Modify scaling groups |
| Image update in scaling configurations | Tasks can be created to update multiple images in scaling configurations at the same time. | 2020-07-02 | All regions | Automatically update images in scaling configurations |
May 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Auto Scaling-linked role | The AliyunServiceRoleForAutoScaling role is automatically created when Auto Scaling is activated. | 2020-05-06 | All regions | Manage the service-linked role for Auto Scaling |
April 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Rolling upgrade | Rolling update tasks can be created to update the configurations of ECS instances at the same time. | 2020-04-26 | Some regions | Rolling update |
March 2020
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Event-triggered task for system monitoring | More metrics are supported by event-triggered tasks for system monitoring. | 2020-03-17 | All regions | Event-triggered task for system monitoring |
| Optimized configuration items for scaling groups | The configuration items that are used to create a scaling group are optimized. You can add tags to scaling groups and select existing instances as templates to create instances for the scaling groups. | 2020-03-11 | All regions | Manage scaling groups |
December 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for suspending and resuming processes in scaling groups | The processes in a scaling group can be suspended or resumed to manage scaling operations in a fine-grained manner. | 2019-12-03 | All regions |
October 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Configuration of the health status of ECS instances | An API operation can be called to specify the health status of an ECS instance. | 2019-10-25 | All regions | SetInstanceHealth |
| Expected number of instances | The expected number of ECS instances in a scaling group can be specified. This way, Auto Scaling can execute parallel scaling activities. | 2019-10-22 | All regions | Expected number of instances |
September 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Creation of a scaling configuration from an existing instance | API operations can be called to create a scaling group, and instance IDs can be specified. Auto Scaling can obtain information about the configuration of an instance and automatically creates a scaling configuration. | 2019-09-24 | All regions | CreateScalingGroup |
August 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Association of a lifecycle hook with an OOS template | A lifecycle hook can be associated with an OOS template. When the lifecycle hook is triggered, Auto Scaling automatically uses the associated OOS template. | 2019-08-14 | All regions | Manage lifecycle hooks |
July 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for mixed instance allocation in the cost optimization policy | If you set the multi-zone scaling policy to cost optimization, pay-as-you-go instances and preemptible instances can be created based on the specified capacity. | 2019-07-02 | All regions | Manage scaling groups |
May 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Step scaling rule | A step scaling rule can be created to manage scaling activities based on the size of the alert breach. | 2019-05-20 | All regions | Manage scaling rules |
| Support for multiple security groups | An instance that is automatically created can be added to multiple security groups. | 2019-05-15 | All regions | Create scaling configurations for scaling groups that contain ECS instances |
| Query of the region information | An API operation can be called to query the regions where Auto Scaling is available. | 2019-05-05 | All regions | DescribeRegions |
April 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for predictive scaling rules | Predictive scaling rules can be created. After you create a predictive scaling rule, Auto Scaling adjusts the minimum and maximum numbers of instances in a scaling group based on historical monitoring data. | 2019-04-18 | All regions | Overview |
| Support for the DiskName, DiskDescription, and Encrypted parameters in scaling configurations | The DiskName, DiskDescription, and Encrypted parameters in scaling configurations can be configured. | 2019-04-04 | All regions | Create scaling configurations for scaling groups that contain ECS instances |
January 2019
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for target tracking scaling rule | Target tracking scaling rules can be created. After you create a target tracking scaling rule, Auto Scaling adjusts the number of instances based on the specified values. | 2019-01-11 | All regions | Manage scaling rules |
December 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Change of vSwitches | The vSwitches that are associated with a scaling group can be changed. | 2018-12-28 | All regions | Modify scaling groups |
| Cost optimization policy | The multi-zone scaling policy can be set to cost optimization. | 2018-12-16 | All regions | |
| vServer group | vServer groups can be specified for the Server Load Balancer (SLB) instance that is associated with a scaling group. | 2018-12-07 | All regions | Associate or disassociate SLB instances with or from a scaling group |
November 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Support for the No Fees for Stopped Instances (VPC-Connected) state | ECS instances that are removed from a scaling group can enter the No Fees for Stopped Instances (VPC-Connected) state. | 2018-11-28 | All regions |
October 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Enhanced IP address whitelists of ApsaraDB RDS instances | The private IP addresses of ECS instances in a scaling group can be added to the enhanced IP address whitelists of the ApsaraDB RDS instances that are associated with the scaling group. | 2018-10-19 | All regions | Manage scaling groups |
September 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| New region | Auto Scaling is available in the UK (London) region. | 2018-09-30 | All regions | What is Auto Scaling? |
| Shutdown and reclaim mode | The shutdown and reclaim mode can be specified for a scaling group. | 2018-09-13 | All regions | Manage scaling groups |
| Launch template | A launch template can be specified as an instance configuration source for a scaling group. | 2018-09-01 | All regions | Manage scaling groups |
August 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Cron expression | Cron expressions can be used to specify the recurrence period of scheduled tasks. | 2018-08-20 | All regions | Create a scheduled task |
| Expiration notification for scheduled tasks | Expiration notifications for scheduled tasks can be configured. | 2018-08-20 | All regions | Create an advanced notification rule |
July 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Modification of information about data disks and the price limits of preemptible instances | Information about data disks and the price limits of preemptible instances in scaling configurations can be modified. | 2018-07-27 | All regions | Modify a scaling configuration |
| Association with ApsaraDB RDS instances | ApsaraDB RDS instances can be associated with or disassociated from scaling groups. | 2018-07-11 | All regions | Modify scaling groups |
| Association with SLB instances | SLB instances can be associated with or disassociated from scaling groups. | 2018-07-04 | All regions | Modify scaling groups |
June 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Modification of scaling configurations | Existing scaling configurations can be modified. | 2018-06-27 | All regions | Modify a scaling configuration |
| Lifecycle hook | If an ECS instance is automatically created for or removed from a scaling group, lifecycle hooks can be used to put the instance into the Pending state. This way, you can perform desired operations on the instance. | 2018-06-01 | All regions | Manage lifecycle hooks |
April 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Scaling activity notifications | When a specific type of scaling activity occurs in a scaling group, notifications can be sent to CloudMonitor or Message Service (MNS). | 2018-04-20 | All regions | Overview |
March 2018
| Feature | Description | Release date | Region | References |
|---|---|---|---|---|
| Protected state | ECS instances in a scaling group can be put into the Protected state. Instances in the Protected state cannot be released or removed from the scaling group during scale-in activities. | 2018-03-28 | All regions | Put an ECS instance into the Protected state |
| Standby state | ECS instances in a scaling group can be put into the Standby state. This way, you can manage the lifecycle of the ECS instances. | 2018-03-15 | All regions | Manually change the status of instances |
2015
| Service | Description | Release date | Region | References |
|---|---|---|---|---|
| Auto Scaling | Auto Scaling is officially launched. | 2015-08-27 | Some regions | What is Auto Scaling? |
2014
| Service | Description | Release date | Region | References |
|---|---|---|---|---|
| Auto Scaling | Auto Scaling is in internal preview. | 2014-10-15 | Some regions | What is Auto Scaling? |