MSK clusters on an end-of-support Kafka version — auto-upgrade can happen at any time

AWSDeprecations & retirementsTeam planSeverity: highaws.kafka

Amazon MSK provisioned clusters on an Apache Kafka version past its MSK end-of-support date; MSK auto-upgrades them to the recommended version without notice

What LeftSize checks

Find Amazon MSK provisioned clusters running an Apache Kafka version past its MSK end of support date.

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
  • Alternative approaches and their trade-offs
  • Step-by-step remediation with safety checks
  • Ready-to-run fix scripts (CLI, PowerShell or Terraform where available)
  • Snooze, ignore or report a finding with a comment on the issue
Install LeftSizeIncluded in the Team and Business plans.

Official references