Docs

Auto Scaling

Document

What's new

New feature release notes

Product Introduction

What is Auto Scaling (AS)?

Related cloud products

Region and availability zone

Billing

Billing instructions

Getting started

Quick start

Procedure for creating a scaling task

Quickly creating scaling tasks

User Guide

Adjustment types

Scaling group

Lifecycle

Cooldown time

Creating scaling group

Modifying subnets of scaling groups

Modifying instance counts of scaling groups

Modifying policy information of scaling group

Modifying health check policy of scaling group

Configuring load balancer associated with scaling group

Pausing/Resuming scaling group processes

Enabling scaling group

Disabling scaling groups

Delete scaling groups

Viewing scaling logs

Scaling configuration

Scaling configuration source overview

Managing scaling configurations

Associating scaling configuration source with scaling group

Updating image in scaling configuration source

Managing instances

Instance lifecycle

Instance health check

Expected instance count

Configuring instance protection

Setting instance to standby status

Automatically scaling out instances

Automatically scaling in instances

Adding instance manually

Manually removing instances

Manually deleting instances

Changing instance to the Disabled status

Viewing instance details

Scaling rule

Scaling rule overview

Creating scheduled scaling rules

Creating alert-based scaling rules

Creating periodic scaling rules

Creating scaling rules specific to ESIs

Creating target tracking scaling rules

Enabling scaling rules

Disabling scaling rules

Modifying scaling rules

Deleting scaling rules

Appendixes

Introduction to Cron expressions

Monitoring metric introduction

Lifecycle hook

Lifecycle hook overview

Creating lifecycle hooks

Manually ending suspension

Editing lifecycle hooks

Deleting lifecycle hooks

Notification channels

Notification channel overview

Managing event notifications

Managing message notifications

Vertical scaling

Vertical scaling overview

Lifecycle

Creating vertical scaling tasks

Viewing vertical scaling task details

Canceling vertical scaling tasks

Deleting vertical scaling tasks

Rolling Upgrade

Rolling upgrade overview

Creating execution tasks

Continuing task execution

Rolling back execution tasks

Canceling execution tasks

Viewing task execution details

Monitoring

Viewing monitoring data

IAM

IAM overview

AS IAM policy types

AS custom policy syntax examples

Project and tag

API Reference

Call method

ScalingGroup

CreateScalingGroup - Creates a scaling group

ModifyScalingGroup - Modifies a scaling group

DescribeScalingGroups - Queries the list of scaling groups

DeleteScalingGroup - Deletes a scaling group

EnableScalingGroup - Enables a scaling group

DisableScalingGroup - Disables a scaling group

AttachServerGroups - Associates Load Balancer backend server groups

DetachServerGroups - Removes Load Balancer backend server groups

AttachDBInstances - Adds RDS instances

DetachDBInstances - Removes RDS instances

SuspendProcesses - Suspends scaling group processes

ResumeProcesses - Resumes scaling group processes

ScalingConfiguration

CreateScalingConfiguration - Creates a scaling configuration

ModifyScalingConfiguration - Modifies a scaling configuration

DeleteScalingConfiguration - Deletes a scaling configuration

DescribeScalingConfigurations - Queries the list of scaling configurations

EnableScalingConfiguration - Enables a scaling configuration

ScalingInstances

DescribeScalingInstances - Queries ECS instances in a scaling group

AttachInstances - Manually adds instances to a scaling group

DetachInstances - Manually removes instances from a scaling group

RemoveInstances - Manually deletes instances from a scaling group

SetInstancesProtection - Enables or disables protection for instances in a scaling group

EnterStandby - Sets an instance to standby status

ExitStandby - Removes an instance from standby status

ScalingPolicy

CreateScalingPolicy - Creates a scaling rule

ModifyScalingPolicy - Modifies a scaling rule

DeleteScalingPolicy - Deletes a scaling rule

EnableScalingPolicy - Enables a scaling rule

DisableScalingPolicy - Disables a scaling rule

DescribeScalingPolicies - Queries scaling rules

Elastic scheduled scaling rule

CreateScalingPolicy

ModifyScalingPolicy

DescribeScalingPolicies

Target tracking scaling rule

CreateScalingPolicy

ModifyScalingPolicy

DescribeScalingPolicies

LifecycleHook

CreateLifecycleHook - Creates a lifecycle hook

ModifyLifecycleHook - Modifies a lifecycle hook

DescribeLifecycleHooks - Queries lifecycle hooks

DeleteLifecycleHook - Deletes a lifecycle hook

DescribeLifecycleActivities - Queries lifecycle hook activities

CompleteLifecycleActivity - Manually ends pending status of a lifecycle activity

ScalingActivities

DescribeScalingActivities - Queries scaling activities

NotificationConfiguration

CreateNotificationConfiguration - Creates event notification configuration

ModifyNotificationConfiguration - Modifies event notification configuration

DescribeNotificationConfigurations - Queries event notification configurations

DeleteNotificationConfiguration - Deletes event notification configuration

Tag

TagResources - Tags resources

UntagResources - Untags resources

ListTagResources - Queries tagged resources

SDK reference

AS SDK overview

Viewing all sample code

Best Practices

Reducing costs by using spot instances

Building auto-scalable website

Deploying high-availability disaster recovery clusters

Configuring multiple instance types to improve scaling success rate

Updating images/scripts for instances in scaling group with one click

Configuring sequential and unique instance names or hostnames

FAQ

Scaling group FAQ

Scaling configuration source FAQ

Instance management FAQ

Scaling rule FAQ

Lifecycle hook FAQ

Billing FAQ

Documentation

Auto Scaling

User Guide

Managing instances

Expected instance count

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Managing instances

Expected instance count

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Expected instance count

Last updated: 2026.06.24 17:08:48

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