name : update-auto-scaling-group.rst **Example 1: To update the size limits of an Auto Scaling group** This example updates the specified Auto Scaling group with a minimum size of 2 and a maximum size of 10. :: aws autoscaling update-auto-scaling-group \ --auto-scaling-group-name my-asg \ --min-size 2 \ --max-size 10 This command produces no output. For more information, see `Setting capacity limits for your Auto Scaling group <https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-capacity-limits.html>`__ in the *Amazon EC2 Auto Scaling User Guide*. **Example 2: To add Elastic Load Balancing health checks and specify which Availability Zones and subnets to use** This example updates the specified Auto Scaling group to add Elastic Load Balancing health checks. This command also updates the value of ``--vpc-zone-identifier`` with a list of subnet IDs in multiple Availability Zones. :: aws autoscaling update-auto-scaling-group \ --auto-scaling-group-name my-asg \ --health-check-type ELB \ --health-check-grace-period 600 \ --vpc-zone-identifier "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782" This command produces no output. For more information, see `Elastic Load Balancing and Amazon EC2 Auto Scaling <https://docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html>`__ in the *Amazon EC2 Auto Scaling User Guide*. **Example 3: To update the placement group and termination policy** This example updates the placement group and termination policy to use. :: aws autoscaling update-auto-scaling-group \ --auto-scaling-group-name my-asg \ --placement-group my-placement-group \ --termination-policies "OldestInstance" This command produces no output. For more information, see `Auto Scaling groups <https://docs.aws.amazon.com/autoscaling/ec2/userguide/AutoScalingGroup.html>`__ in the *Amazon EC2 Auto Scaling User Guide*. **Example 4: To use the latest version of the launch template** This example updates the specified Auto Scaling group to use the latest version of the specified launch template. :: aws autoscaling update-auto-scaling-group \ --auto-scaling-group-name my-asg \ --launch-template LaunchTemplateId=lt-1234567890abcde12,Version='$Latest' This command produces no output. For more information, see `Launch templates <https://docs.aws.amazon.com/autoscaling/ec2/userguide/LaunchTemplates.html>`__ in the *Amazon EC2 Auto Scaling User Guide*. **Example 5: To use a specific version of the launch template** This example updates the specified Auto Scaling group to use a specific version of a launch template instead of the latest or default version. :: aws autoscaling update-auto-scaling-group \ --auto-scaling-group-name my-asg \ --launch-template LaunchTemplateName=my-template-for-auto-scaling,Version='2' This command produces no output. For more information, see `Launch templates <https://docs.aws.amazon.com/autoscaling/ec2/userguide/LaunchTemplates.html>`__ in the *Amazon EC2 Auto Scaling User Guide*. **Example 6: To define a mixed instances policy and enable capacity rebalancing** This example updates the specified Auto Scaling group to use a mixed instances policy and enables capacity rebalancing. This structure lets you specify groups with Spot and On-Demand capacities and use different launch templates for different architectures. :: aws autoscaling update-auto-scaling-group \ --cli-input-json file://~/config.json Contents of ``config.json``:: { "AutoScalingGroupName": "my-asg", "CapacityRebalance": true, "MixedInstancesPolicy": { "LaunchTemplate": { "LaunchTemplateSpecification": { "LaunchTemplateName": "my-launch-template-for-x86", "Version": "$Latest" }, "Overrides": [ { "InstanceType": "c6g.large", "LaunchTemplateSpecification": { "LaunchTemplateName": "my-launch-template-for-arm", "Version": "$Latest" } }, { "InstanceType": "c5.large" }, { "InstanceType": "c5a.large" } ] }, "InstancesDistribution": { "OnDemandPercentageAboveBaseCapacity": 50, "SpotAllocationStrategy": "capacity-optimized" } } } This command produces no output. For more information, see `Auto Scaling groups with multiple instance types and purchase options <https://docs.aws.amazon.com/autoscaling/ec2/userguide/asg-purchase-options.html>`__ in the *Amazon EC2 Auto Scaling User Guide*.