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Remediation

From Command Line​

Update the Availability Zones for the Auto Scaling Group​

Use the update-auto-scaling-group command to modify the Availability Zones for your ASG:

aws autoscaling update-auto-scaling-group \
--auto-scaling-group-name {{your-auto-scaling-group-name}} \
--availability-zones {{AZ1}} {{AZ2}}

Replace {{your-auto-scaling-group-name}} with the name of your ASG and {{AZ1}}, {{AZ2}}, etc., with the list of Availability Zones you want to include.

Update the Availability Zones for the Classic Load Balancer​

Use the enable-availability-zones-for-load-balancer command to add Availability Zones to your CLB. Similarly, use disable-availability-zones-for-load-balancer to remove any unnecessary zones.

Enabling Availability Zones​

aws elb enable-availability-zones-for-load-balancer \
--load-balancer-name {{your-load-balancer-name}} \
--availability-zones {{AZ1}} {{AZ2}}

Disabling Availability Zones (if needed)​

aws elb disable-availability-zones-for-load-balancer \
--load-balancer-name {{your-load-balancer-name}} \
--availability-zones {{AZ1-to-remove}} {{AZ2-to-remove}}