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What happens if an instance within an auto scaling group (ASG) is terminated but the instance is not detached from the ASG?

Nithin G
3 min readNov 29, 2023
Autoscaling Groups role play

What is ASG?

Auto Scaling Groups (ASGs) are a key feature provided by cloud computing platforms like Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and others. ASGs are designed to automatically manage and adjust the number of instances (virtual machines or servers) in response to changes in demand or based on predefined conditions.ASGs provide a way to ensure that the right number of instances are available to handle varying workloads, maintain application availability, and optimize resource utilization

If you want to know more insight then click here ASG

Let’s move to the topic ahead. What happens to ASG!!!!

If an instance within an auto scaling group (ASG) is terminated but the instance is not detached from the ASG, it can lead to a situation where the ASG is unaware of the termination. This scenario might occur due to various reasons:

1. External Termination: Sometimes, instances within an ASG might be terminated externally, either manually or due to underlying cloud infrastructure actions (e.g., hardware failure, maintenance tasks by the cloud provider).

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Nithin G
Nithin G

Written by Nithin G

I am Devops Consultant who talks about Cloud, DevOps, Docker and Kubernetes. I have also been a part of many DevOps transformation Project.

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