<ul><li>Cluster Autoscaler (CA) works with predefined node groups, scaling within min/max limits like AWS EKS Managed Node Groups or Self-Managed Node Groups by adjusting their ASG sizes based on workload needs.</li><li>To deploy CA on EKS, one must download the CA manifest, configure IAM permissions, tag node groups, and verify by checking CA logs.</li><li>Karpenter, an open-source node provisioning tool, directly provisions nodes for unschedulable pods, optimizing resource utilization by launching nodes bypassing node groups.</li><li>To deploy Karpenter on EKS, steps include using Helm to install Karpenter, creating a NodePool, defining an EC2NodeClass with IAM configuration, and verifying by checking Karpenter logs.</li></ul>

Karpenter vs Kubernetes Cluster Autoscaler: A Detailed Comparison

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