utils

package
v1.7.1 Latest Latest
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 Go to latest Published: Feb 12, 2026 License: Apache-2.0, Apache-2.0 Imports: 19 Imported by: 0

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Constants

View Source 
const (
	Nvidia470CudaDriverVersion = "470.82.01"

	// https://github.com/Azure/AgentBaker/blob/c0e684e5cecebcf61554cc7d2e2d2191972d35ed/parts/common/components.json#L797-L811
	NvidiaCudaDriverVersion = "550.144.03"
	AKSGPUCudaVersionSuffix = "20250328201547"

	NvidiaGridDriverVersion = "550.144.06"
	AKSGPUGridVersionSuffix = "20250512225043"
)

TODO: Get these from agentbaker

Variables

View Source 
var ConvergedGPUDriverSizes = map[string]bool{
	"standard_nv6ads_a10_v5":   true,
	"standard_nv12ads_a10_v5":  true,
	"standard_nv18ads_a10_v5":  true,
	"standard_nv36ads_a10_v5":  true,
	"standard_nv72ads_a10_v5":  true,
	"standard_nv36adms_a10_v5": true,
	"standard_nc8ads_a10_v4":   true,
	"standard_nc16ads_a10_v4":  true,
	"standard_nc32ads_a10_v4":  true,
}
ConvergedGPUDriverSizes : these sizes use a "converged" driver to support both cuda/grid workloads.

how do you figure this out? ask HPC or find out by trial and error. installing vanilla cuda drivers will fail to install with opaque errors. see https://github.com/Azure/azhpc-extensions/blob/daaefd78df6f27012caf30f3b54c3bd6dc437652/NvidiaGPU/resources.json

Functions

func ExtractTaints added in v1.7.0 

func ExtractTaints(nodeClaim *karpv1.NodeClaim) (generalTaints, startupTaints []corev1.Taint)

ExtractTaints returns the general taints and startup taints from a NodeClaim, ensuring that UnregisteredNoExecuteTaint is present in startup taints.

func ExtractVersionFromVMSize added in v1.6.1 

func ExtractVersionFromVMSize(vmsize *skewer.VMSizeType) string

extractVersionFromVMSize extracts and normalizes the version from VMSizeType, dropping "v" prefix and backfilling "1"

func GetAKSGPUImageSHA 

func GetAKSGPUImageSHA(size string) string

func GetAKSMachineNodeImageVersionFromImageID added in v1.6.8 

func GetAKSMachineNodeImageVersionFromImageID(imageID string) (string, error)

WARNING: not supporting CIG images yet.

func GetAKSMachineNodeImageVersionFromSIGImageID added in v1.6.8 

func GetAKSMachineNodeImageVersionFromSIGImageID(imageID string) (string, error)

Convert from "/subscriptions/10945678-1234-1234-1234-123456789012/resourceGroups/AKS-Ubuntu/providers/Microsoft.Compute/galleries/AKSUbuntu/images/2204gen2containerd/versions/2022.10.03" to "AKSUbuntu-2204gen2containerd-2022.10.03".

func GetAlphanumericHash added in v1.7.0 

func GetAlphanumericHash(input string, length int) (string, error)

GetAlphanumericHash generates a base36 alphanumeric hash of the input string with the specified length. Be mindful of collision risks with short lengths. Also note that length > 13 provides no additional collision resistance because the underlying hashstructure library returns a 64-bit hash, which only fills ~13 base36 characters; extra characters are just leading zeros. At the time of writing, this is being used in AKS machine instance provider/GetAKSMachineNameFromNodeClaimName(). See that for context.

func GetGPUDriverType added in v0.5.5 

func GetGPUDriverType(size string) string

GetGPUDriverType returns the type of GPU driver for given VM SKU ("grid" or "cuda")

func GetGPUDriverVersion 

func GetGPUDriverVersion(size string) string

NV series GPUs target graphics workloads vs NC which targets compute. they typically use GRID, not CUDA drivers, and will fail to install CUDA drivers. NVv1 seems to run with CUDA, NVv5 requires GRID. NVv3 is untested on AKS, NVv4 is AMD so n/a, and NVv2 no longer seems to exist (?).

func GetMaxPods added in v0.7.5 

func GetMaxPods(nodeClass *v1beta1.AKSNodeClass, networkPlugin, networkPluginMode string) int32

GetMaxPods resolves what we should set max pods to for a given nodeclass. If not specified, defaults based on network-plugin. 30 for "azure", 110 for "kubenet", or 250 for "none" and network plugin mode overlay.

func GetSubnetResourceID added in v0.4.0 

func GetSubnetResourceID(subscriptionID, resourceGroupName, virtualNetworkName, subnetName string) string

GetSubnetResourceID constructs the subnet resource id

func HasChanged added in v1.5.0 

func HasChanged(existing, new any, options *hashstructure.HashOptions) bool

HasChanged returns if the given value has changed, given the existing and new instance

This option is accessible in place of using a ChangeMonitor, when there's access to both the existing and new data.

func ImageReferenceToString added in v0.7.0 

func ImageReferenceToString(imageRef *armcompute.ImageReference) string

func IsAKSManagedVNET added in v1.5.0 

func IsAKSManagedVNET(nodeResourceGroup string, subnetID string) (bool, error)

IsAKSManagedVNET determines if the vnet managed or not. Note: You can "trick" this function if you really try by (for example) createding a VNET that looks like an AKS managed VNET, with the same resource group as the MC RG, in a different subscription, or by creating your own VNET in the MC RG whose name matches the AKS pattern but the VNET is actually yours rather than ours.

func IsMarinerEnabledGPUSKU 

func IsMarinerEnabledGPUSKU(vmSize string) bool

IsNvidiaEnabledSKU determines if an VM SKU has nvidia driver support

func IsNvidiaEnabledSKU 

func IsNvidiaEnabledSKU(vmSize string) bool

IsNvidiaEnabledSKU determines if an VM SKU has nvidia driver support

func IsVMDeleting added in v0.7.0 

func IsVMDeleting(vm armcompute.VirtualMachine) bool

func MakeAKSLabelZoneFromARMZone added in v1.6.7 

func MakeAKSLabelZoneFromARMZone(location string, zoneID string) string

MakeAKSLabelZoneFromARMZone returns the zone value in format of <region>-<zone-id>.

func MakeAKSLabelZoneFromVM added in v1.6.7 

func MakeAKSLabelZoneFromVM(vm *armcompute.VirtualMachine) (string, error)

MakeAKSLabelZoneFromVM returns the zone for the given virtual machine, or an empty string if there is no zone specified

func MakeARMZonesFromAKSLabelZone added in v1.6.7 

func MakeARMZonesFromAKSLabelZone(zone string) []*string

MakeARMZonesFromAKSLabelZone returns the zone ID from <region>-<zone-id>.

func NewTerminatingResourceError added in v1.6.2 

func NewTerminatingResourceError(gr schema.GroupResource, name string) *errors.StatusError

NewTerminatingResourceError returns a NotFound error indicating that the resource is terminating. This is useful for resources where termination should be treated as not found.

func NormalizeClusterResourceGroupNameForLabel added in v1.7.0 

func NormalizeClusterResourceGroupNameForLabel(resourceGroupName string) string

func PrettySlice added in v0.7.0 

func PrettySlice[T any](s []T, maxItems int) string

PrettySlice truncates a slice after a certain number of max items to ensure that the Slice isn't too long

func StringMap added in v0.7.0 

func StringMap(list v1.ResourceList) map[string]string

StringMap returns the string map representation of the resource list

func UseGridDrivers added in v0.5.5 

func UseGridDrivers(size string) bool

func VMResourceIDToProviderID added in v1.6.6 

func VMResourceIDToProviderID(ctx context.Context, id string) string

func WithDefaultFloat64 added in v0.7.0 

func WithDefaultFloat64(key string, def float64) float64

WithDefaultFloat64 returns the float64 value of the supplied environment variable or, if not present, the supplied default value. If the float64 conversion fails, returns the default

Types

type NvidiaSKUConfig added in v0.5.5 

type NvidiaSKUConfig struct {
	NvidiaEnabledSKUFamilies        map[string][]string `yaml:"nvidiaEnabledSKUs"`
	MarinerNvidiaEnabledSKUFamilies map[string][]string `yaml:"marinerNvidiaEnabledSKUs"`
}

type VnetSubnetResource added in v1.6.2 

type VnetSubnetResource struct {
	SubscriptionID    string
	ResourceGroupName string
	VNetName          string
	SubnetName        string
}

this parsing function replaces three different functions in different packages that all had bugs. Please don't use a regex to parse these

func GetVnetSubnetIDComponents added in v0.4.0 

func GetVnetSubnetIDComponents(vnetSubnetID string) (VnetSubnetResource, error)

GetVnetSubnetIDComponents parses an Azure subnet resource ID into its component parts. Input: A fully qualified Azure subnet resource ID in the format: 

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/subnets/{subnetName}

The input is case-insensitive and must contain exactly 11 slash-separated segments. Output: A vnetSubnetResource struct containing:

  • SubscriptionID: The Azure subscription ID
  • ResourceGroupName: The resource group name
  • VNetName: The virtual network name
  • SubnetName: The subnet name

Returns an error if the input format is invalid or doesn't match the expected structure.

func (VnetSubnetResource) IsSameVNET added in v1.6.2 

func (v VnetSubnetResource) IsSameVNET(cmp VnetSubnetResource) bool

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