Ensure Auto Scaling group does not have suspended processes

You should not have any suspended processes in your Auto Scaling group. You would want to Suspend process if there is a problem in your ASG that you need to investigate. You should enable any suspended process as soon as the investigation ends.

Risk Level: Low
Cloud Entity: EC2 Auto Scaling Group
CloudGuard Rule ID: D9.TF.AWS.OPE.20
Covered by Spectral: No
Category: Compute


aws_autoscaling_group should not have suspended_processes


In order to resume all process, use to following CLI command:
aws autoscaling resume-processes --auto-scaling-group-name <ASG Name>

It's possible to resume a specific process with the tag: --scaling-processes <Process Name>

suspendable process Names are: [AZRebalance, AddToLoadBalancer, AlarmNotification, HealthCheck, InstanceRefresh, Launch, ReplaceUnhealthy, ScheduledActions, Terminate].
For more information: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html

EC2 Auto Scaling Group

An Auto Scaling group contains a collection of Amazon EC2 instances that are treated as a logical grouping for the purposes of automatic scaling and management. An Auto Scaling group also enables you to use Amazon EC2 Auto Scaling features such as health check replacements and scaling policies. Both maintaining the number of instances in an Auto Scaling group and automatic scaling are the core functionality of the Amazon EC2 Auto Scaling service.

Compliance Frameworks

  • Terraform AWS CIS Foundations