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feat: add AzureNodeClass CRD at karpenter.azure.com/v1alpha1
Introduce a new AzureNodeClass CRD that provides a generic Azure VM node class, independent of AKS-specific concerns. This CRD supports custom images (imageID), verbatim user bootstrap data (userData), per-NodeClass managed identities, and standard Azure VM configuration. AzureNodeClass is intended for non-AKS control plane scenarios where the user manages their own bootstrap process, while AKSNodeClass continues to serve AKS-managed clusters. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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‎charts/karpenter-crd/templates/karpenter.azure.com_azurenodeclasses.yaml‎

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---
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apiVersion: apiextensions.k8s.io/v1
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kind: CustomResourceDefinition
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metadata:
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annotations:
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controller-gen.kubebuilder.io/version: v0.19.0
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name: azurenodeclasses.karpenter.azure.com
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spec:
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group: karpenter.azure.com
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names:
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categories:
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- karpenter
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kind: AzureNodeClass
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listKind: AzureNodeClassList
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plural: azurenodeclasses
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shortNames:
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- aznc
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- azncs
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singular: azurenodeclass
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scope: Cluster
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versions:
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- additionalPrinterColumns:
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- jsonPath: .status.conditions[?(@.type=='Ready')].status
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name: Ready
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type: string
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- jsonPath: .metadata.creationTimestamp
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name: Age
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type: date
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- jsonPath: .spec.imageID
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name: ImageID
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priority: 1
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type: string
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name: v1alpha1
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schema:
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openAPIV3Schema:
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description: |-
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AzureNodeClass is the Schema for the AzureNodeClass API.
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AzureNodeClass is a more generic node class for provisioning Azure VMs
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that are not necessarily managed by AKS. It supports custom images,
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custom bootstrap data (userData), and per-NodeClass identity configuration.
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properties:
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apiVersion:
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description: |-
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APIVersion defines the versioned schema of this representation of an object.
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Servers should convert recognized schemas to the latest internal value, and
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may reject unrecognized values.
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More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
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type: string
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kind:
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description: |-
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Kind is a string value representing the REST resource this object represents.
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Servers may infer this from the endpoint the client submits requests to.
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Cannot be updated.
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In CamelCase.
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More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
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type: string
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metadata:
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type: object
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spec:
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description: |-
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spec is the top level specification for the Azure Karpenter Provider.
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This will contain configuration necessary to launch instances in Azure.
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properties:
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imageID:
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description: |-
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imageID is the ARM resource ID of the image that instances use.
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This can be a Compute Gallery image, Shared Image Gallery image, or any valid Azure image resource ID.
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When set, imageFamily-based image resolution is bypassed entirely.
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The user is responsible for ensuring the image is compatible with the selected instance types.
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pattern: (?i)^\/subscriptions\/[^\/]+\/resourceGroups\/[^\/]+\/providers\/Microsoft\.(Compute|AzureHybridBenefit)\/.*$
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type: string
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managedIdentities:
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description: |-
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managedIdentities is a list of user-assigned managed identity resource IDs
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to attach to provisioned VMs. These are merged with any global identities
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configured via the --node-identities flag.
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items:
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type: string
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maxItems: 10
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type: array
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osDiskSizeGB:
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description: osDiskSizeGB is the size of the OS disk in GB.
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format: int32
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maximum: 4096
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minimum: 30
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type: integer
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security:
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description: security is a collection of security related karpenter
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fields.
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properties:
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encryptionAtHost:
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description: |-
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encryptionAtHost specifies whether host-level encryption is enabled for provisioned nodes.
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For more information, see:
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https://learn.microsoft.com/en-us/azure/virtual-machines/disk-encryption#encryption-at-host---end-to-end-encryption-for-your-vm-data
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type: boolean
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type: object
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tags:
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additionalProperties:
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type: string
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description: tags to be applied on Azure resources like instances.
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type: object
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x-kubernetes-validations:
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- message: tags keys must be less than 512 characters
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rule: self.all(k, size(k) <= 512)
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- message: tags keys must not contain '<', '>', '%', '&', or '?'
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rule: self.all(k, !k.matches('[<>%&?]'))
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- message: tags keys must not contain '\'
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rule: self.all(k, !k.contains('\\'))
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- message: tags values must be less than 256 characters
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rule: self.all(k, size(self[k]) <= 256)
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userData:
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description: |-
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userData is verbatim CustomData that will be passed to the VM at creation time.
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The Azure SDK will base64-encode this value before sending it to the Azure API.
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The user is fully responsible for providing valid bootstrap/cloud-init data.
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When this field is set, no Karpenter-managed bootstrapping is performed.
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type: string
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vnetSubnetID:
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description: |-
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vnetSubnetID is the subnet used by nics provisioned with this nodeclass.
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If not specified, we will use the default --vnet-subnet-id specified in karpenter's options config.
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pattern: (?i)^\/subscriptions\/[^\/]+\/resourceGroups\/[a-zA-Z0-9_\-().]{0,89}[a-zA-Z0-9_\-()]\/providers\/Microsoft\.Network\/virtualNetworks\/[^\/]+\/subnets\/[^\/]+$
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type: string
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type: object
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status:
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description: status contains the resolved state of the AzureNodeClass.
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properties:
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conditions:
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description: conditions contains signals for health and readiness
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items:
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description: Condition aliases the upstream type and adds additional
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helper methods
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properties:
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lastTransitionTime:
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description: |-
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lastTransitionTime is the last time the condition transitioned from one status to another.
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This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.
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format: date-time
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type: string
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message:
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description: |-
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message is a human readable message indicating details about the transition.
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This may be an empty string.
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maxLength: 32768
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type: string
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observedGeneration:
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description: |-
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observedGeneration represents the .metadata.generation that the condition was set based upon.
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For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
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with respect to the current state of the instance.
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format: int64
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minimum: 0
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type: integer
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reason:
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description: |-
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reason contains a programmatic identifier indicating the reason for the condition's last transition.
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Producers of specific condition types may define expected values and meanings for this field,
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and whether the values are considered a guaranteed API.
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The value should be a CamelCase string.
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This field may not be empty.
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maxLength: 1024
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minLength: 1
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pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
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type: string
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status:
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description: status of the condition, one of True, False, Unknown.
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enum:
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- "True"
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- "False"
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- Unknown
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type: string
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type:
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description: type of condition in CamelCase or in foo.example.com/CamelCase.
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maxLength: 316
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pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
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type: string
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required:
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- lastTransitionTime
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- message
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- reason
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- status
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- type
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type: object
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type: array
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type: object
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type: object
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served: true
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storage: true
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subresources:
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status: {}

‎pkg/apis/apis.go‎

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//CompatibilityGroup = "compatibility." + Group
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//go:embed crds/karpenter.azure.com_aksnodeclasses.yaml
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AKSNodeClassCRD []byte
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//go:embed crds/karpenter.azure.com_azurenodeclasses.yaml
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AzureNodeClassCRD []byte
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//go:embed crds/karpenter.sh_nodepools.yaml
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NodePoolCRD []byte
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//go:embed crds/karpenter.sh_nodeclaims.yaml
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NodeOverlayCRD []byte
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CRDs = []*apiextensionsv1.CustomResourceDefinition{
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object.Unmarshal[apiextensionsv1.CustomResourceDefinition](AKSNodeClassCRD),
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object.Unmarshal[apiextensionsv1.CustomResourceDefinition](AzureNodeClassCRD),
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object.Unmarshal[apiextensionsv1.CustomResourceDefinition](NodePoolCRD),
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object.Unmarshal[apiextensionsv1.CustomResourceDefinition](NodeClaimCRD),
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object.Unmarshal[apiextensionsv1.CustomResourceDefinition](NodeOverlayCRD),

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