EKS: AL2023 Nvidia instance type missing

[markusl]

Describe the bug

It seems that the GPU instances are missing AL2023 Nvidia and Neuron entries

aws-cdk/packages/aws-cdk-lib/aws-eks/lib/managed-nodegroup.ts

Lines 595 to 600 in bf77e51

	const gpuAmiTypes: NodegroupAmiType[] = [
	NodegroupAmiType.AL2_X86_64_GPU,
	NodegroupAmiType.BOTTLEROCKET_X86_64_NVIDIA,
	NodegroupAmiType.BOTTLEROCKET_ARM_64_NVIDIA,
	];

are

Regression Issue

• Select this option if this issue appears to be a regression.

Last Known Working CDK Version

No response

Expected Behavior

All supported GPU instances are in the enumeration

https://aws.amazon.com/blogs/containers/amazon-eks-optimized-amazon-linux-2023-accelerated-amis-now-available/

Current Behavior

GPU instances are missing AL2023 Nvidia and Neuron entries

Reproduction Steps

See the enum

Possible Solution

No response

Additional Information/Context

No response

CDK CLI Version

2.171.1 (build a95560c)

Framework Version

No response

Node.js Version

22

OS

Mac

Language

TypeScript

Language Version

No response

Other information

No response

[nmussy]

I'm not seeing an API endpoint to list all possible values, but the values you listed seem to match the CloudFormation documentation for Nodegroup#amiType:

• 'AL2023_x86_64_NEURON'
• 'AL2023_x86_64_NVIDIA'

---

There is also a 'CUSTOM' value missing from the NodegroupAmiType enum, but it doesn't seem to be needed to use launchTemplateSpec

aws-cdk/packages/aws-cdk-lib/aws-eks/lib/managed-nodegroup.ts

Lines 195 to 201 in fa55194

	/**
	* The AMI type for your node group. If you explicitly specify the launchTemplate with custom AMI, do not specify this property, or
	* the node group deployment will fail. In other cases, you will need to specify correct amiType for the nodegroup.
	*
	* @default - auto-determined from the instanceTypes property when launchTemplateSpec property is not specified
	*/
	readonly amiType?: NodegroupAmiType;

aws-cdk/packages/@aws-cdk-testing/framework-integ/test/aws-eks/test/integ.eks-cluster.ts

Lines 251 to 259 in fa55194

	this.cluster.addNodegroupCapacity('extra-ng2', {
	minSize: 1,
	// reusing the default capacity nodegroup instance role when available
	nodeRole: this.cluster.defaultNodegroup?.role || this.cluster.defaultCapacity?.role,
	launchTemplateSpec: {
	id: lt.ref,
	version: lt.attrDefaultVersionNumber,
	},
	});

[ashishdhingra]

@nmussy Thanks for your review. We need to update NodegroupAmiType enum as well. Community contributed PR is welcome. :)

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