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Tag: Karpenter

Problems with Karpenter

IDTitleDescriptionCategoryTechnologyTags
CRE-2025-0061
Medium
Impact: 7/10
Mitigation: 4/10
Karpenter Stability Issues on EKS During Leader Election
  • EKS may be able to handle steady, predictable scale, but struggles during large‑scale auto scaling events when many workloads and nodes are spinning up or down simultaneously.
  • This instability affects components that implement leader election using the Kubernetes API, such as:
  • aws‑load‑balancer‑controller
  • karpenter
  • keda‑operator
  • ebs‑csi‑controller
  • efs‑csi‑controller
Stability ProblemskarpenterKarpenterKEDAAWSEKS
CRE-2025-0062
Medium
Impact: 6/10
Mitigation: 2/10
Karpenter Version Incompatible with Kubernetes Version
  • Karpenter logs an error when its current version is not compatible with the running Kubernetes control plane version.
  • This results in provisioning failures and indicates a required upgrade to align compatibility.
  • The issue is surfaced via structured logs from the controller.
Incompatibility ProblemkarpenterVersion IncompatibilityKarpenter