Auto Scaling:Release notes

Feature

Description

Release date

Region

References

Lifecycle hooks support setting EventBridge notifications

After you set up EventBridge for a lifecycle hook, when a scaling activity occurs in the scaling group, the system generates different types of lifecycle notifications. A scale-out lifecycle notification sends an ess:LifecycleHook:ScaleOut type event, and a scale-in lifecycle notification sends an ess:LifecycleHook:ScaleIn type event. You can flexibly identify and handle corresponding events based on these notifications.

2023-06-26

All

• CreateLifecycleHook

• ModifyLifecycleHook

• DescribeLifecycleHooks

Feature

Description

Release date

Region

References

System event-triggered tasks add the ECS Concurrent Connections metric

In an ECS scaling group, you can select the (ECS) ECS Concurrent Connections (ConcurrentConnections) metric for system event-triggered tasks. This metric is used to monitor the number of concurrent network connections on an ECS instance, helping you better understand the network load of the ECS instance.

2023-05-25

All

System monitoring event-triggered tasks

Feature

Description

Release date

Region

References

Health diagnosis feature adds cost and inventory diagnosis metrics

Cost diagnosis metrics can check if a user account has an overdue payment. Inventory diagnosis metrics can check the inventory health of the instance types corresponding to the scaling group configuration. This helps users promptly discover and resolve common issues.

2023-04-18

All

Health diagnosis

Auto Scaling supports setting ordered and unique instance name (InstanceName) rules

Set instance name (InstanceName) or hostname (HostName) rules in the scaling configuration. After a scale-out, Auto Scaling will generate ordered and unique instance names or hostnames for the scaled-out ECS instances, helping you better manage them.

2023-04-15

All

Set ordered and unique instance name or hostname rules

ECS instances scaled out by Auto Scaling support logon via a standard account (ecs-user)

When you call an API operation to create an ECS scaling configuration, if the ImageOptions.LoginAsNonRoot parameter is set to Yes, the ECS instances scaled out by Auto Scaling can be logged on to using a standard account (ecs-user).

2023-04-12

All

CreateScalingConfiguration

Scaling groups support setting backend server group weights for associated load balancers

After associating a scaling group with a load balancer, you can specify the weight of instances when they are added to the load balancer's backend server group during scaling group creation. You can also set the load balancer weight parameter in the scaling configuration to specify the weight.

2023-04-10

All

Add and remove SLB instances for a scaling group

Auto Scaling supports the single-machine QPS metric for ALB server groups

You can configure an event-triggered task based on the single-machine QPS metric of an ALB server group to automatically trigger scaling activities, improving the high availability of your application.

2023-04-03

All

Implement automatic scaling of ECI instances based on the single-machine QPS metric of an ALB

Feature

Description

Release date

Region

References

Auto Scaling supports the health diagnosis feature

The health diagnosis feature of Auto Scaling can perform a comprehensive check on the configuration of a scaling group, helping you understand its operational status, promptly discover and resolve common issues, and quickly improve the success rate of scaling activities.

2023-03-21

All

Health diagnosis

Feature

Description

Release date

Region

References

Scaling groups support association with NLB server groups

After a scaling group is associated with an NLB server group, the ECS or ECI instances added to the scaling group are automatically added as backend servers to the NLB server group, allowing for faster processing of access requests distributed by the NLB instance.

2023-02-03

All

• AttachServerGroups

• DetachServerGroups

Feature

Description

Release date

Region

References

ECI scaling configurations support setting the update method for the Containers parameter

The Containers parameter in ECI scaling configurations can be updated in two ways: full update and incremental update. You can choose the appropriate update method as needed.

2023-01-03

All

ModifyEciScalingConfiguration

Scaling configurations support querying the image source

By calling the DescribeScalingConfigurations API operation, you can quickly query the image source selected for a scaling configuration (such as public image, custom image, or Alibaba Cloud Marketplace image).

2023-01-10

All

DescribeScalingConfigurations

Feature

Description

Release date

Region

References

Scaling groups support integration with resource groups

You can use resource groups to manage scaling groups. When you create a scaling group, you can specify the resource group to which it belongs and grant resource group-level permissions for fine-grained management of scaling groups.

2022-12-27

All

• CreateScalingGroup

• ModifyScalingGroup

• DescribeScalingGroups

Feature

Description

Release date

Region

References

Lifecycle hooks add the lifecycleActionResult parameter passed to OOS templates

When a lifecycle hook suspends a scaling activity, the notification sent to the OOS template (notification object) includes the new lifecycleActionResult parameter. It indicates the next action after the lifecycle hook's waiting state ends, used to terminate the current pending activity early if the OOS template execution fails.

2022-11-02

All

• CreateLifecycleHook

• ModifyLifecycleHook

Scaling groups with an expected number of instances support synchronous control of scaling activities

Scaling groups with an expected number of instances support setting the SyncActivity parameter (the switch for synchronous execution of scaling activities), which offers two execution modes: synchronous and asynchronous. You can choose the appropriate execution mode based on your business needs to improve the efficiency of scaling activities.

2022-11-02

All

ScaleWithAdjustment

Feature

Description

Release date

Region

References

Auto Scaling supports custom scale-in policies (Function)

You can set the RemovalPolicy parameter in a scaling group to CustomPolicy and specify the CustomPolicyARN parameter value to select a custom removal policy. This means the instance removal policy in the scaling group will be based on a custom scale-in policy (Function) to remove ECS instances, allowing you to flexibly choose an instance removal method that matches your business scenario.

2022-10-14

All

• Customize ECS instance scale-in policies using Function Compute

• CreateScalingGroup

• ModifyScalingGroup

Lifecycle hooks support pause or enable functionality

You can enable or pause a lifecycle hook through the Auto Scaling console or by calling the ModifyLifecycleHook API operation. A paused lifecycle hook will not be active during scaling activities. Please pause or enable this feature based on your actual business scenarios.

2022-10-13

All

• Pause or enable a lifecycle hook

• ModifyLifecycleHook

• DescribeLifecycleHooks

Feature

Description

Release date

Region

References

ECS scaling groups support setting the maximum instance lifetime

You can set the maximum lifetime for instances in a scaling group. Instances that exceed the maximum lifetime (that is, the ECS instance expires) will be automatically replaced by new ECS instances.

2022-08-25

All

• Create a scaling group

• CreateScalingGroup

• ModifyScalingGroup

• DescribeScalingGroups

Feature

Description

Release date

Region

References

ECI scaling groups support enabling the cost optimization feature

After you enable the cost optimization feature, the scaling group performs ECI instance price inquiries, ECS instance type matching, and price comparisons before scaling out. It automatically matches the specified ECS type with a lower price to create ECI instances based on your application's ECI configuration. This lets you manage your applications conveniently and cost-effectively through Elastic Container Instance (ECI) and achieve automatic application scaling.

2022-07-29

All

• CreateEciScalingConfiguration

• ModifyEciScalingConfiguration

• DescribeEciScalingConfigurations

Event-triggered tasks support setting multi-metric alert rules

You can configure alert rules in an event-triggered task where multiple metrics must simultaneously meet their threshold conditions, or where any metric meeting its threshold condition will trigger the automatic scaling of the scaling group. For example, a scale-out can be triggered when both CPU utilization and memory metrics meet their threshold conditions.

2022-07-27

All

• Configure an event-triggered task

• CreateAlarm

• ModifyAlarm

• DescribeAlarms

Scaling configurations support configuring cloud_auto disk type instances

You can specify the system disk or data disk type as cloud_auto (that is, ESSD AutoPL disk) in a scaling configuration or launch template to create and attach ECS instances with this disk type in a scaling group. This disk maintains the original features and performance of ESSD while decoupling disk capacity from disk performance.

2022-07-14

All

• CreateScalingConfiguration

• ModifyScalingConfiguration

• DescribeScalingConfigurations

Feature

Description

Release date

Region

References

ECI scaling groups support moving ECI instances into or out of the standby state

You can call the EnterStandby API operation to set an ECI instance in a scaling group to the standby state, or call the ExitStandby API operation to move an ECI instance in the standby state into the running state.

2022-06-29

All

• EnterStandby

• ExitStandby

ECI scaling groups support adding or removing ALBs, RDS, VServerGroups, and AlbSeverGroups

You can call the corresponding API operations to add or remove one or more load balancer instances, RDS instances, one or more vServer groups under a load balancer instance, and ALB server groups for an ECI scaling group.

2022-06-14

All

• AttachLoadBalancers

• DetachLoadBalancers

• AttachDBInstances

• DetachDBInstances

• AttachVServerGroups

• DetachVServerGroups

• AttachAlbServerGroups

• DetachAlbServerGroups

Intelligent configuration supports filter conditions

In intelligent configuration mode, you can set filter conditions to quickly select instance types. For example, you can filter by excluding instance types, selecting the architecture type of the instance, or whether to include burstable instance types.

2022-06-08

All

• CreateScalingConfiguration

• DescribeScalingConfigurations

• ModifyScalingConfiguration

Monitoring metrics (Agent) add a 15-second statistical period

The 15-second statistical period is only suitable for the CpuUtilizationAgent: (Agent) CPU Utilization (%) metric. For other metrics, the statistical period can be set to 60, 120, 300, or 900 seconds.

2022-06-08

All

• CreateAlarm

• ModifyAlarm

Scaling groups in expected number of instances mode support calling the ScaleWithAdjustment API operation

If you have set an expected number of instances when creating a scaling group but have not created a scaling rule, you can call the ScaleWithAdjustment API operation to quickly execute a scaling activity and achieve automatic scaling.

2022-06-06

All

ScaleWithAdjustment

Feature

Description

Release date

Region

References

ECI scaling groups support the lifecycle hook feature

Lifecycle hooks can manage the lifecycle of ECI instances within a scaling group. A lifecycle hook can pause a scaling activity automatically triggered by Auto Scaling, putting the ECI instance in a pending state (a waiting state), which gives you a custom period of time for operations until the lifecycle hook times out.

2022-05-17

All

• Lifecycle hook overview

• Configure a lifecycle hook

Feature

Function Overview

Release date

Region

References

Support for calling AttachInstances or DetachInstances API operations to add or remove ECI instances from a scaling group

You can call the AttachInstances API operation to manually add ECI instances to a scaling group, or call the DetachInstances API operation to remove existing ECI instances from a scaling group.

2022-04-24

All

• AttachInstances

• DetachInstances

Support for resource-level and tag-level authentication management

You can manage scaling groups through resource-level and tag-level authentication, granting different permissions to RAM users to achieve delegated management of Auto Scaling resources.

2022-04-13

All

• Manage Auto Scaling through resource authentication

• Set management permissions for scaling groups through tag-based authentication

Feature

Function Overview

Release date

Region

References

ECI scaling groups support the instance health check feature

A scaling group can periodically check the running status of ECI instances within the group and can automatically remove abnormal ECI instances. If an ECI instance is not in a running state, the scaling group will automatically add a corresponding type of ECI instance to replace the unhealthy one.

2022-02-24

All

• Configure a scaling group

• Instance lifecycle in a scaling group

Feature

Function Overview

Release date

Region

References

Support for asynchronous interaction

When moving an ECS instance into or out of the standby state, you can choose the asynchronous option to improve the user interaction experience.

2021-11-29

All

• Manually adjust instance status

• Move an instance out of the standby state

Support for assessing ECS instance resource availability

Use the scaling strength provided by Auto Scaling to assess the resource availability of ECS instances, thereby improving the success rate of scaling group scale-outs.

2021-11-28

All

Elastic strength

Support for automated handling of abnormal scaling groups

Abnormal scaling groups display an error message on the console page, allowing users to quickly locate and resolve the issue.

2021-11-16

All

View a scaling group

Support for setting capacity reservation parameters

When creating or modifying a scaling configuration, Auto Scaling supports setting capacity reservation parameters for ECS or ECI instances.

2021-11-02

All

• Create a scaling configuration (ECS instance)

• Create a scaling configuration (ECI instance)

• Modify a scaling configuration

Feature

Function Overview

Release date

Region

References

Support for automatic scaling of ECI instances

When the scaling group type is ECI, Auto Scaling automatically scales ECI instances for that scaling group.

2021-10-20

All

• Configure a scaling group

• Create a scaling configuration (ECI instance)

Feature

Function Overview

Release date

Region

References

Intelligent configuration

Scaling configurations support intelligent configuration. Auto Scaling automatically filters instance types that meet the configuration requirements for scale-out.

2021-09-09

All

• Create a scaling configuration (ECS instance)

• Configure a scaling configuration using specified instance properties

• CreateScalingConfiguration

Feature

Function Overview

Release date

Region

References

Economical mode

The "No Fees for Stopped Instances" feature has been renamed to "Economical Mode".

2021-08-09

All

• Configure a scaling group

• CreateScalingGroup

• RemoveInstances

Feature

Function Overview

Release date

Region

References

Associate with ALB server groups

Support for associating scaling groups with ALB server groups. After association, ECS instances added to the scaling group are automatically added as backend servers to the ALB server group to handle access requests distributed by the ALB instance.

2021-06-11

All

• Configure a scaling group

• AttachAlbServerGroups

Feature

Function Overview

Release date

Region

References

Vertical scaling

Support for adjusting the instance type (vCPU and memory) of pay-as-you-go instances.

2021-03-31

All

Vertical scaling overview

Feature

Function Overview

Release date

Region

References

Scaling configuration

Support for setting weights for instance types.

2021-02-12

All

• Create a scaling configuration (ECS instance)

• Use performance metrics as the unit of measurement for Auto Scaling

• CreateScalingConfiguration

Feature

Function Overview

Release date

Region

References

Scaling configuration

Support for automatically generating ordered and unique hostnames.

2021-01-15

All

• Create a scaling configuration (ECS instance)

• Set ordered and unique instance name or hostname rules

• CreateScalingConfiguration

Feature

Function Overview

Release date

Region

References

Scaling configuration

When an ESSD is selected for the system disk or data disk, you can specify the performance level.

2020-11-18

All

• Create a scaling configuration (ECS instance)

• CreateScalingConfiguration

Feature

Function Overview

Release date

Region

References

Event-triggered task

Expanded the statistical methods supported by custom monitoring event-triggered tasks.

2020-10-25

All

• Configure an event-triggered task

• CreateAlarm

Feature

Function Overview

Release date

Region

References

Modify a scaling configuration

Support for modifying only the image in a scaling configuration.

2020-09-24

All

Update the image in a scaling configuration

Feature

Function Overview

Release date

Region

References

Rolling upgrade

Support for installing software via OOS packages.

2020-08-20

Partial

Rolling upgrade

Expected number of instances

Support for modifying the expected number of instances when deleting or removing an instance from a scaling group.

2020-08-12

All

Expected number of instances

Scheduled task

Support for not setting an end time, with the maximum period adjusted to 1 year.

2020-08-07

All

Configure a scheduled task

Feature

Function Overview

Release date

Region

References

Modify a scaling group

Support for enabling or disabling health checks for instances in an existing scaling group.

2020-07-30

All

Modify a scaling group

Feature

Function Overview

Release date

Region

References

Auto Scaling service-linked role

When you activate the Auto Scaling service, the AliyunServiceRoleForAutoScaling service-linked role is automatically created.

2020-05-06

All

Service-linked Role

Feature

Function Overview

Release date

Region

References

Rolling upgrade

Support for batch updating ECS instance configurations through tasks.

2020-04-26

Partial

Rolling upgrade

Feature

Function Overview

Release date

Region

References

System monitoring event-triggered tasks

More monitoring metrics are supported by system monitoring event-triggered tasks.

2020-03-17

All

System monitoring event-triggered tasks

Create a scaling group

Optimized the classification of configuration items for creating a scaling group, and added support for selecting an existing instance and adding tags to the scaling group.

2020-03-11

All

Configure a scaling group

Feature

Function Overview

Release date

Region

References

Suspend and resume scaling group processes

Support for actively suspending and resuming processes in a scaling group for more fine-grained control over scaling group actions.

2019-12-03

All

• Suspend a scaling group process

• Suspend and resume scaling group processes

Feature

Function Overview

Release date

Region

References

Set the health status of an ECS instance

Support for setting the health status of an ECS instance in a scaling group via an API operation.

2019-10-25

All

SetInstanceHealth

Expected number of instances

Set the number of ECS instances in a scaling group with a single click and flexibly execute parallel scaling activities.

2019-10-22

All

Expected number of instances

Feature

Function Overview

Release date

Region

References

Quickly create a scaling configuration from a specified instance

When creating a scaling group via an API operation, you can specify an instance ID to retrieve configuration information from the instance and automatically create a scaling configuration.

2019-09-24

All

CreateScalingGroup

Feature

Function Overview

Release date

Region

References

Associate a lifecycle hook with an OOS O&M template

Lifecycle hooks support association with OOS O&M templates. When a lifecycle hook is triggered, the specified OOS O&M template can be automatically executed.

2019-08-14

All

Configure a lifecycle hook

Feature

Function Overview

Release date

Region

References

Cost optimization policy supports mixed instance allocation

When the multi-zone scaling policy is set to cost optimization, it supports creating pay-as-you-go and spot instances according to the set capacity.

2019-07-02

All

Configure a scaling group

Feature

Function Overview

Release date

Region

References

Step scaling rule

Support for creating step scaling rules for fine-grained scaling control based on the breach size.

2019-05-20

All

Configure a scaling rule

Multiple security groups

Automatically created instances support joining multiple security groups.

2019-05-15

All

Create a scaling configuration (ECS instance)

View Endpoint information

Support for viewing regions that support the Auto Scaling service via an API operation.

2019-05-05

All

DescribeRegions

Feature

Function Overview

Release date

Region

References

Predictive scaling rule

Support for creating predictive scaling rules to automatically adjust the upper and lower limits of the number of instances in a scaling group based on historical monitoring data.

2019-04-18

All

Scaling rule overview

Scaling configurations support DiskName, DiskDescription, and Encrypted parameters

Support for setting the disk name, disk description, and whether to encrypt for a scaling configuration.

2019-04-04

All

Create a scaling configuration (ECS instance)

Feature

Function Overview

Release date

Region

References

Target tracking scaling rule

Support for creating target tracking scaling rules to automatically scale based on a set target value.

2019-01-11

All

Configure a scaling rule

Feature

Description

Release date

Region

References

Modify vSwitches

Supports modifying the vSwitches that are associated with a scaling group.

2018-12-28

All regions

Modify a scaling group

Cost optimization policy

The multi-zone scaling policy supports a cost optimization policy.

2018-12-16

All regions

• Configure a scaling group

• Set a scaling policy and specify multiple instance types to reduce costs

Specify vServer groups

You can specify vServer groups for the SLB instance that is associated with a scaling group.

2018-12-07

All regions

Attach or detach SLB instances to or from a scaling group

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

• Manage scaling groups

• CreateScalingGroup

• RemoveInstances

Feature

Description

Release date

Region

References

RDS high-security whitelist

Adds the private IP addresses of ECS instances in a scaling group to an RDS high-security whitelist.

2018-10-19

All regions

Manage scaling groups

Feature

Description

Release date

Region

References

UK Launch

Auto Scaling is available in the UK (London) region.

2018-09-30

All regions

What is Auto Scaling?

Shutdown and reclaim mode

Lets you set the shutdown and reclaim mode for a scaling group.

2018-09-13

All regions

Configure scaling groups

Launch templates as instance configurations

Lets you use a launch template as the source of instance configurations for a scaling group.

2018-09-01

All regions

Configure scaling groups

Feature

Description

Release date

Region

References

Cron expressions for scheduled tasks

Supports using cron expressions to set the recurrence of scheduled tasks.

2018-08-20

All regions

Configure scheduled tasks

Expiration notifications for scheduled tasks

Supports setting event notifications for scheduled task expiration.

2018-08-20

All regions

Configure event notifications

Feature

Description

Release date

Region

References

Modify data disk and spot instance information

Lets you modify information about data disks and the price limits for spot instances in a scaling configuration.

2018-07-27

All regions

Modify a scaling configuration

Associate RDS instances

Lets you associate RDS instances with or disassociate them from a scaling group.

2018-07-11

All regions

Modify a scaling group

Associate SLB instances

Lets you associate SLB instances with or disassociate them from a scaling group.

2018-07-04

All regions

Modify a scaling group

Feature

Description

Release date

Region

References

Modification of scaling configurations

Lets you modify existing scaling configurations.

2018-06-27

All regions

Modify a scaling configuration

Lifecycle hooks

When an ECS instance is automatically created or removed, lifecycle hooks suspend the instance. This lets you perform custom operations on the instance.

2018-06-01

All regions

Configure a lifecycle hook

Feature

Description

Release date

Region

References

Scaling activity notifications

When events of a specified type occur, notifications are automatically sent to Cloud Monitor or Simple Message Queue (formerly MNS).

2018-04-20

All regions

Message notification overview

Feature

Description

Release date

Region

References

Instance protection

You can set an instance to the protected state to prevent it from being removed from a scaling group during a scale-in.

2018-03-28

All regions

Put an instance into the protected state

Standby state

You can set an instance to the standby state to remove it from service and manage its lifecycle.

2018-03-15

All regions

Manually adjust the status of an instance

Product Name

Description

Release date

Region

References

Auto Scaling

Auto Scaling is officially launched.

2015-08-27

Some regions

What is Auto Scaling?

Product

Description

Release date

Region

References

Auto Scaling

Auto Scaling is in internal preview.

2014-10-15

Some regions

What is Auto Scaling?