EC2 instances on Amazon Linux 2 — end of support was Jun 30, 2026

AWSDeprecations & retirementsTeam planSeverity: highaws.ec2

EC2 instances launched from an Amazon Linux 2 AMI (amzn2-ami-*); Amazon Linux 2 reached end of support on June 30, 2026

What LeftSize checks

Find running or stopped EC2 instances launched from an Amazon Linux 2 AMI (AMI name starting with "amzn2-ami-", the documented AL2 naming scheme, including ECS-optimized AL2 AMIs).

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