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Does EKS node group override ASG configuration?

0

I was told that for our EKS instances, that if I update the ASG via "Scheduled actions" that it won't work correctly because the nodes will actually be based on what is configured Node group scaling configuration.

Topics
Management & GovernanceContainers
Tags
Amazon Elastic Container ServiceAWS Auto ScalingAmazon Elastic Kubernetes Service
Language
English
asked 3 years ago1.2K views
2 Answers
1

Hi, when you create EKS (for example from Terraform), ASG will be automatically created for the node group. So, to change the capacity of EKS nodes you need to change ASG params. If you want it to be done automatically per load, you need to use Cluster Autoscaler: https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler. If you compare node group min, desired, max capacity and ASG min, desired, max capacity, you should see the same values.

answered 3 years ago
  • rePost-User-4136916
    3 years ago

    Thanks but found an easier way to modify EKS nodes using Systems manager automation doc "AWS-UpdateEKSManagedNodeGroup" and just modifying the NodeGroupDesiredSize field.

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More detailed similar answer is provided at this link as well : https://repost.aws/questions/QUlmqEwKfrQe-clJXvXXCu6w/auto-scale-eks-nodes#ANCjzD02BbQVqi2AaM32tvcw

answered 3 years ago

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