aws-autoscaling 命令

常用示例

说明

aws autoscaling manages Amazon EC2 Auto Scaling groups that automatically adjust the number of EC2 instances based on demand or schedules. Groups maintain application availability and allow automatic scaling up during demand spikes and scaling down to reduce costs. Launch templates or launch configurations define instance settings (AMI, instance type, security groups). Scaling policies determine when and how to scale based on metrics like CPU utilization or request count. Target tracking scaling maintains a specific metric value (e.g., 50% CPU). Step scaling adjusts capacity in steps based on alarm thresholds. Scheduled scaling changes capacity at specified times. Health checks (EC2 or ELB) detect unhealthy instances for automatic replacement. The health-check-grace-period prevents premature termination of instances still initializing.

参数

create-auto-scaling-group

Create a new Auto Scaling group

describe-auto-scaling-groups

List Auto Scaling groups and their configuration

update-auto-scaling-group

Modify group settings (capacity, health checks, etc.)

delete-auto-scaling-group

Delete an Auto Scaling group

put-scaling-policy

Create or update a scaling policy

describe-scaling-activities

View scaling activity history

set-desired-capacity

Set the desired number of instances

attach-load-balancer-target-groups

Attach target groups to the group

create-launch-configuration

Create a launch configuration (legacy)

--auto-scaling-group-name _name_

Name of the Auto Scaling group

--launch-template _spec_

Launch template ID or name and version

--min-size _n_

Minimum number of instances

--max-size _n_

Maximum number of instances

--desired-capacity _n_

Desired number of instances

--vpc-zone-identifier _subnets_

Comma-separated subnet IDs

--health-check-type _type_

EC2 or ELB health check type

--health-check-grace-period _seconds_

Seconds before health checks start

--force-delete

Delete even with running instances