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Invisible OOMkill: Java pods crashing in Kubernetes

Ramya vani Rayala

This article explains why Java pods can be OOMKilled when JVM heap settings ignore off-heap memory and shows how to align JVM flags with Kubernetes limits.

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The Hidden Cost of Slow Autoscaling
The Hidden Cost of Slow Autoscaling

Forced platform migrations are usually treated as something to survive. At Scout24, a mandatory OS migration became an opportunity to rethink Kubernetes autoscaling, node provisioning, and infrastructure efficiency.

John Ford explains how Scout24 moved its EKS-based Infinity platform from a polling autoscaler and over-provisioned capacity to Karpenter and Bottlerocket. The result was faster node startup, a safer migration path, and about a 30% infrastructure reduction without major downtime.

In this interview:

  • Why two-minute node provisioning forced a 25% capacity buffer
  • How Karpenter made the Bottlerocket migration safer
  • What broke around EC2 metadata, AWS SDKs, and cgroups
  • How the new foundation enables Spot, ARM, and GPU workloads

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