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AWS parallelcluster documentation change

Service: parallelcluster · 2026-06-04 · Documentation low

File: parallelcluster/latest/ug/Image-v3.md

Summary

Updated documentation about OS support: grammatical correction, added RHEL pricing note, restructured RHEL version details, and added Amazon Linux 2 EOL warning.

Security assessment

The change adds documentation about Amazon Linux 2 reaching End of Life (EOL) in 2026, explicitly stating it will no longer receive security patches after that date. This qualifies as security documentation since it warns about future lack of security updates. However, it doesn't address an existing vulnerability or incident.

Diff

diff --git a/parallelcluster/latest/ug/Image-v3.md b/parallelcluster/latest/ug/Image-v3.md
index 98730b041..c77b2aebf 100644
--- a//parallelcluster/latest/ug/Image-v3.md
+++ b//parallelcluster/latest/ug/Image-v3.md
@@ -13 +13 @@ Image properties
-Unsupported versions of the official AMIs distributed by AWS ParallelCluster will be made unavailable after 18 months of inactivity. These old images contain outdated software and cannot receive support in case of issues. We strongly suggest to move to the latest supported version.
+Unsupported versions of the official AMIs distributed by AWS ParallelCluster will be made unavailable after 18 months of inactivity. These old images contain outdated software and cannot receive support in case of issues. We strongly suggest moving to the latest supported version.
@@ -30,0 +31,4 @@ Specifies the operating system to use for the cluster. The supported values are
+If you configure your cluster to use `rhel`, the on-demand cost for any instance type is higher than when you configure your cluster to use other supported operation systems. For more information about pricing, see [On-Demand Pricing ](https://aws.amazon.com/ec2/pricing/on-demand) and [How is Red Hat Enterprise Linux on Amazon EC2 offered and priced?](https://aws.amazon.com/partners/redhat/faqs/#Pricing_and_Billing). 
+
+###### Note
+
@@ -33 +37 @@ RedHat Enterprise Linux 8.7 (`rhel8`) is added starting in AWS ParallelCluster v
-If you configure your cluster to use `rhel`, the on-demand cost for any instance type is higher than when you configure your cluster to use other supported operation systems. For more information about pricing, see [On-Demand Pricing](https://aws.amazon.com/ec2/pricing/on-demand) and [How is Red Hat Enterprise Linux on Amazon EC2 offered and priced?](https://aws.amazon.com/partners/redhat/faqs/#Pricing_and_Billing).
+Red Hat Enterprise Linux 9 (`rhel9`) is added starting in AWS ParallelCluster version 3.9.0. 
@@ -35 +39 @@ If you configure your cluster to use `rhel`, the on-demand cost for any instance
-RedHat Enterprise Linux 9 (rhel9) is added starting in AWS ParallelCluster version 3.9.0.
+AWS ParallelCluster 3.15 is the last version to include `alinux2` support. Amazon Linux 2 reaches End of Life (EOL) on 2026-06-30 (see [Amazon Linux 2 FAQs ](https://aws.amazon.com/amazon-linux-2/faqs/)) and will no longer receive security patches or bug fixes after EOL. 
@@ -98,2 +101,0 @@ To build a RedHat Enterprise Linux custom AMI, you must configure the OS for ins
-  * AL23 doesn't support NICE DCV, as it doesn't include a graphical desktop environment, which is required to run NICE DCV. For more information, see the official [NICE DCV documentation](https://docs.aws.amazon.com//dcv/).
-