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AWS parallelcluster medium security documentation change

Service: parallelcluster · 2025-04-03 · Security-related medium

File: parallelcluster/latest/ug/operating-systems-v3.md

Summary

Added Ubuntu 24.04 support and updated SSH key requirements for Ubuntu versions

Security assessment

Explicitly states that Ubuntu 22.04/24.04 require ed25519 keys instead of insecure RSA keys by default, which addresses cryptographic security requirements

Diff

diff --git a/parallelcluster/latest/ug/operating-systems-v3.md b/parallelcluster/latest/ug/operating-systems-v3.md
index 9605284b9..b48d9d9ee 100644
--- a//parallelcluster/latest/ug/operating-systems-v3.md
+++ b//parallelcluster/latest/ug/operating-systems-v3.md
@@ -9 +9 @@ Operating system considerations
-AWS ParallelCluster supports Amazon Linux 2, Amazon Linux 2023, Ubuntu 22.04, Ubuntu 2004, Red Hat Enterprise Linux 8 (RHEL8), Rocky 8, Red Hat Enterprise Linux 9 (RHEL9), and Rocky 9. AWS ParallelCluster offers pre-built AMIs for select operating systems, for more details on AMIs provided by AWS ParallelCluster refer to [Image section](./Image-v3.html).
+AWS ParallelCluster supports Amazon Linux 2, Amazon Linux 2023, Ubuntu24.04, Ubuntu 22.04, Ubuntu 20.04, Red Hat Enterprise Linux 8 (RHEL8), Rocky 8, Red Hat Enterprise Linux 9 (RHEL9), and Rocky 9. AWS ParallelCluster offers pre-built AMIs for select operating systems, for more details on AMIs provided by AWS ParallelCluster refer to [Image section](./Image-v3.html).
@@ -13 +13 @@ AWS ParallelCluster supports Amazon Linux 2, Amazon Linux 2023, Ubuntu 22.04, Ub
-**Ubuntu 22.04**
+**Ubuntu 22.04 & Ubuntu 24.04**
@@ -15 +15 @@ AWS ParallelCluster supports Amazon Linux 2, Amazon Linux 2023, Ubuntu 22.04, Ub
-Ubuntu 2204 requires more secure keys for ssh and does not support RSA keys by default. Please generate an ed25519 key and use that for cluster creation.
+Ubuntu 22.04 & Ubuntu 24.04 require more secure keys for ssh and do not support RSA keys by default. Please generate an ed25519 key and use that for cluster creation.
@@ -17 +17 @@ Ubuntu 2204 requires more secure keys for ssh and does not support RSA keys by d
-Ubuntu 2204 cannot be updated to the latest kernel because there is no Fsx client for that kernel.
+Ubuntu 22.04 cannot be updated to the latest kernel because there is no FSx client for that kernel.