AWS parallelcluster documentation change

Service: parallelcluster · 2026-03-25 · Documentation low

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

Summary

Added documentation for the new 'LaunchTemplateOverrides' configuration option, which allows specifying a launch template to override the default launch template for compute resources, specifically for network interface customization.

Security assessment

The change introduces a new feature for customizing network interfaces via launch template overrides. While network configuration can have security implications (e.g., controlling network access), the documentation does not mention any specific security vulnerability, weakness, or incident being addressed. It is a feature addition for customization.

Diff

diff --git a/parallelcluster/latest/ug/Scheduling-v3.md b/parallelcluster/latest/ug/Scheduling-v3.md
index bcee1c050..6849e7bbd 100644
--- a//parallelcluster/latest/ug/Scheduling-v3.md
+++ b//parallelcluster/latest/ug/Scheduling-v3.md
@@ -114,0 +115,3 @@ Scheduling propertiesAwsBatchQueuesSlurmQueuesSlurmSettings
+              LaunchTemplateOverrides:
+                LaunchTemplateId: string
+                Version: string
@@ -456,0 +460,3 @@ The maximum percentage of the On-Demand price for the instance type that an Amaz
+            LaunchTemplateOverrides:
+              LaunchTemplateId: string
+              Version: string
@@ -1107,0 +1114,3 @@ To troubleshoot custom AMI validation warnings, see [Troubleshooting custom AMI
+        LaunchTemplateOverrides:
+          LaunchTemplateId: string
+          Version: string
@@ -1574,0 +1584,34 @@ The tag value.
+**
+
+`LaunchTemplateOverrides` (**Optional**)**
+    
+
+###### Note
+
+`LaunchTemplateOverrides` is added with AWS ParallelCluster version 3.15.0.
+
+Specifies a launch template to override the default launch template that AWS ParallelCluster creates for the compute resource. The launch template should only contain network interfaces overrides. AWS ParallelCluster validates the launch template and prevents overriding other parameters. For more information on how to use this override, see [Customize compute node network interfaces with launch template overrides](./tutorial-network-customization-v3.html).
+    
+    
+    LaunchTemplateOverrides:
+      LaunchTemplateId: string
+      Version: string
+
+**
+
+`LaunchTemplateId` (**Required** , `String`)**
+    
+
+The ID of the launch template.
+
+[Update policy: The compute fleet must be stopped or QueueUpdateStrategy must be set for this setting to be changed for an update.](./using-pcluster-update-cluster-v3.html#update-policy-queue-update-strategy-v3)
+
+**
+
+`Version` (**Required** , `String`)**
+    
+
+The version number of the launch template.
+
+[Update policy: The compute fleet must be stopped or QueueUpdateStrategy must be set for this setting to be changed for an update.](./using-pcluster-update-cluster-v3.html#update-policy-queue-update-strategy-v3)
+