The Hidden 850% Kubernetes Network Cost: Cloud EKS vs. Bare Metal Deep Dive
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The Hidden 850% Kubernetes Network Cost: Cloud EKS vs. Bare Metal Deep Dive
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Running Kubernetes in the cloud? Your network bill might hide a costly surprise, especially for applications sending lots of data out. A recent study revealed that using a managed service like AWS EKS could result in network costs 850% higher than a comparable bare-metal setup for specific workloads. We break down the research comparing complex, usage-based cloud network pricing against simpler, capacity-based bare-metal costs. Learn how the researchers used tools like Kubecost to precisely measure network expenses under identical performance conditions for high-egress applications. Discover why your application's traffic profile, particularly outbound internet traffic, is the critical factor determining cost differences. This analysis focuses specifically on network costs, providing crucial data for FinOps decisions, though operational overhead remains a separate consideration. Understand the trade-offs and when bare metal might offer significant network savings for your Kubernetes deployments.
Read the original paper: http://arxiv.org/abs/2504.11007v1
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