EKS clusters on Kubernetes 1.34 or older — extended support costs $0.60/hr vs $0.10/hr (1.34 from Dec 2, 2026)

AWSDeprecations & retirementsTeam planSeverity: highaws.eks

EKS clusters on Kubernetes 1.34 or older: 1.31-1.33 are billed extended support ($0.60/cluster-hour instead of $0.10) and 1.34 enters extended support on December 2, 2026

What LeftSize checks

Find EKS clusters whose Kubernetes version is in paid extended support, or whose standard support ends within ~2 months.

Why it matters

Missed retirement and end-of-support dates turn into forced upgrades, outages or extended support charges at a moment you did not choose.

What you get in the GitHub issue

LeftSize runs this check from a scheduled GitHub Action with a read-only identity in your AWS account and opens one issue per scope, updated on every scan. The issue includes:

  • The affected resources, grouped per subscription, resource group or account and region
  • Background on why it was flagged and when it is a false positive
  • Cost and operational impact of fixing it
  • Step-by-step remediation with safety checks
  • Ready-to-run fix scripts (CLI, PowerShell or Terraform where available)
  • Alternative approaches and their trade-offs
  • Snooze, ignore or report a finding with a comment on the issue
Install LeftSizeIncluded in the Team and Business plans.

Official references