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# amazon
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limited-eye-27484

02/23/2023, 3:56 AM
What are the supported configurations for the Cluster Autoscaler with Rancher provisioned EKS clusters? If I already have a Rancher provisioned EKS cluster (provisioned with Terraform), and am following the docs here , am I good to go? The Rancher docs only discuss setting up the cluster autoscaler using a Custom RKE cluster: https://ranchermanager.docs.rancher.com/v2.5/pages-for-subheaders/install-cluster-autoscaler
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famous-angle-73641

02/23/2023, 3:43 PM
We use the same cluster-autoscaler docker image and settings for RKE or EKS.
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steep-journalist-13696

02/27/2023, 6:25 PM
so when Rancher deploys EKS clusters it is leveraging Cluster Autoscaler and not EC2 auto-scaling?
@famous-angle-73641 ^^ do you know by chance? I thought we were using EC2 Autoscaler within the Rancher > Create Cluster > EKS workflow.
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