consts

Documentation

Overview

Package consts stages all the consts under pkg/.

Index

• Constants

Constants

const (
	// VMTypeVMSS is the vmss vm type
	VMTypeVMSS = "vmss"
	// VMTypeStandard is the vmas vm type
	VMTypeStandard = "standard"

	// ExternalResourceGroupLabel is the label representing the node is in a different
	// resource group from other cloud provider components
	ExternalResourceGroupLabel = "kubernetes.azure.com/resource-group"
	// ManagedByAzureLabel is the label representing the node is managed by cloud provider azure
	ManagedByAzureLabel = "kubernetes.azure.com/managed"
	// NotManagedByAzureLabelValue is the label value representing the node is not managed by cloud provider azure
	NotManagedByAzureLabelValue = "false"

	// LabelFailureDomainBetaZone refer to https://github.com/kubernetes/api/blob/8519c5ea46199d57724725d5b969c5e8e0533692/core/v1/well_known_labels.go#L22-L23
	LabelFailureDomainBetaZone = "failure-domain.beta.kubernetes.io/zone"

	// LabelFailureDomainBetaRegion failure-domain region label
	LabelFailureDomainBetaRegion = "failure-domain.beta.kubernetes.io/region"

	// ADFSIdentitySystem is the override value for tenantID on Azure Stack clouds.
	ADFSIdentitySystem = "adfs"

	// AzureMetricsNamespace is the namespace of the azure metrics
	AzureMetricsNamespace = "cloudprovider_azure"

	// VhdContainerName is the vhd container name
	VhdContainerName = "vhds"
	// UseHTTPSForBlobBasedDisk determines if we use the https for the blob based disk
	UseHTTPSForBlobBasedDisk = true
	// BlobServiceName is the name of the blob service
	BlobServiceName = "blob"

	// MetadataCacheTTL is the TTL of the metadata service
	MetadataCacheTTL = time.Minute
	// MetadataCacheKey is the metadata cache key
	MetadataCacheKey = "InstanceMetadata"
	// MetadataURL is the metadata service endpoint
	MetadataURL = "http://169.254.169.254/metadata/instance"

	// DefaultDiskIOPSReadWrite is the default IOPS Caps & Throughput Cap (MBps)
	// per https://docs.microsoft.com/en-us/azure/virtual-machines/linux/disks-ultra-ssd
	DefaultDiskIOPSReadWrite = 500
	// DefaultDiskMBpsReadWrite is the default disk MBps read write
	DefaultDiskMBpsReadWrite = 100

	DiskEncryptionSetIDFormat = "/subscriptions/{subs-id}/resourceGroups/{rg-name}/providers/Microsoft.Compute/diskEncryptionSets/{diskEncryptionSet-name}"

	// IPv6DualStack is here to avoid having to import features pkg
	// and violate import rules
	IPv6DualStack featuregate.Feature = "IPv6DualStack"

	// MachineIDTemplate is the template of the virtual machine
	MachineIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Compute/virtualMachines/%s"
	// AvailabilitySetIDTemplate is the template of the availabilitySet ID
	AvailabilitySetIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Compute/availabilitySets/%s"

	// NodeLabelRole specifies the role of a node
	NodeLabelRole = "kubernetes.io/role"
	// MasterNodeRoleLabel specifies is the master node label for a node
	MasterNodeRoleLabel = "node-role.kubernetes.io/master"
	// ControlPlaneNodeRoleLabel specifies is the control-plane node label for a node
	ControlPlaneNodeRoleLabel = "node-role.kubernetes.io/control-plane"

	// NicFailedState is the failed state of a nic
	NicFailedState = "Failed"

	// StorageAccountNameMaxLength is the max length of a storage name
	StorageAccountNameMaxLength = 24

	// DefaultStorageAccountType is the default storage account type
	DefaultStorageAccountType = string(storage.StandardLRS)
	// DefaultStorageAccountKind is the default storage account kind
	DefaultStorageAccountKind = storage.StorageV2
	// FileShareAccountNamePrefix is the file share account name prefix
	FileShareAccountNamePrefix = "f"
	// SharedDiskAccountNamePrefix is the shared disk account name prefix
	SharedDiskAccountNamePrefix = "ds"
	// DedicatedDiskAccountNamePrefix is the dedicated disk account name prefix
	DedicatedDiskAccountNamePrefix = "dd"

	// RetryAfterHeaderKey is the retry-after header key in ARM responses.
	RetryAfterHeaderKey = "Retry-After"

	// StrRawVersion is the raw version string
	StrRawVersion string = "raw"

	// VirtualMachineScaleSetsDeallocating indicates VMSS instances are in Deallocating state.
	VirtualMachineScaleSetsDeallocating = "Deallocating"
	// VmssMachineIDTemplate is the vmss manchine ID template
	VmssMachineIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Compute/virtualMachineScaleSets/%s/virtualMachines/%s"
	// VMSetCIDRIPV4TagKey specifies the node ipv4 CIDR mask of the instances on the VMSS or VMAS
	VMSetCIDRIPV4TagKey = "kubernetesNodeCIDRMaskIPV4"
	// VMSetCIDRIPV6TagKey specifies the node ipv6 CIDR mask of the instances on the VMSS or VMAS
	VMSetCIDRIPV6TagKey = "kubernetesNodeCIDRMaskIPV6"

	// TagsDelimiter is the delimiter of tags
	TagsDelimiter = ","
	// TagKeyValueDelimiter is the delimiter between keys and values in tagas
	TagKeyValueDelimiter = "="
	// VMSetNamesSharingPrimarySLBDelimiter is the delimiter of vmSet names sharing the primary SLB
	VMSetNamesSharingPrimarySLBDelimiter = ","
)

const (
	// VMSSNameSeparator is the separator of the vmss names
	VMSSNameSeparator = "_"
	// VMSSKey is the key when querying vmss cache
	VMSSKey = "k8svmssKey"
	// VMASKey is the key when querying vmss cache
	VMASKey = "k8svmasKey"
	// AvailabilitySetNodesKey is the availability set nodes key
	AvailabilitySetNodesKey = "k8sAvailabilitySetNodesKey"
	// AvailabilitySetNodesCacheTTLDefaultInSeconds is the TTL of the availabilitySet node cache
	AvailabilitySetNodesCacheTTLDefaultInSeconds = 900
	// VMSSCacheTTLDefaultInSeconds is the TTL of the vmss cache
	VMSSCacheTTLDefaultInSeconds = 600
	// VMSSVirtualMachinesCacheTTLDefaultInSeconds is the TTL of the vmss vm cache
	VMSSVirtualMachinesCacheTTLDefaultInSeconds = 600
	// VMASCacheTTLDefaultInSeconds is the TTL of the vmas cache
	VMASCacheTTLDefaultInSeconds = 600

	// ZoneFetchingInterval defines the interval of performing zoneClient.GetZones
	ZoneFetchingInterval = 30 * time.Minute
)

cache

const (
	// CloudProviderName is the value used for the --cloud-provider flag
	CloudProviderName = "azure"
	// AzureStackCloudName is the cloud name of Azure Stack
	AzureStackCloudName = "AZURESTACKCLOUD"
	// RateLimitQPSDefault is the default value of the rate limit qps
	RateLimitQPSDefault = 1.0
	// RateLimitBucketDefault is the default value of rate limit bucket
	RateLimitBucketDefault = 5
	// BackoffRetriesDefault is the default backoff retry count
	BackoffRetriesDefault = 6
	// BackoffExponentDefault is the default value of the backoff exponent
	BackoffExponentDefault = 1.5
	// BackoffDurationDefault is the default value of the backoff duration
	BackoffDurationDefault = 5 // in seconds
	// BackoffJitterDefault is the default value of the backoff jitter
	BackoffJitterDefault = 1.0
)

azure cloud config

const (
	// PreConfiguredBackendPoolLoadBalancerTypesNone means that the load balancers are not pre-configured
	PreConfiguredBackendPoolLoadBalancerTypesNone = ""
	// PreConfiguredBackendPoolLoadBalancerTypesInternal means that the `internal` load balancers are pre-configured
	PreConfiguredBackendPoolLoadBalancerTypesInternal = "internal"
	// PreConfiguredBackendPoolLoadBalancerTypesExternal means that the `external` load balancers are pre-configured
	PreConfiguredBackendPoolLoadBalancerTypesExternal = "external"
	// PreConfiguredBackendPoolLoadBalancerTypesAll means that all load balancers are pre-configured
	PreConfiguredBackendPoolLoadBalancerTypesAll = "all"

	// MaximumLoadBalancerRuleCount is the maximum number of load balancer rules
	// ref: https://docs.microsoft.com/en-us/azure/azure-subscription-service-limits#load-balancer.
	MaximumLoadBalancerRuleCount = 250

	// LoadBalancerSkuBasic is the load balancer basic sku
	LoadBalancerSkuBasic = "basic"
	// LoadBalancerSkuStandard is the load balancer standard sku
	LoadBalancerSkuStandard = "standard"

	// ServiceAnnotationLoadBalancerInternal is the annotation used on the service
	ServiceAnnotationLoadBalancerInternal = "service.beta.kubernetes.io/azure-load-balancer-internal"

	// ServiceAnnotationLoadBalancerInternalSubnet is the annotation used on the service
	// to specify what subnet it is exposed on
	ServiceAnnotationLoadBalancerInternalSubnet = "service.beta.kubernetes.io/azure-load-balancer-internal-subnet"

	// ServiceAnnotationLoadBalancerMode is the annotation used on the service to specify
	// which load balancer should be associated with the service. This is valid when using the basic
	// load balancer or turn on the multiple standard load balancers mode, or it would be ignored.
	// 1. Default mode - service has no annotation ("service.beta.kubernetes.io/azure-load-balancer-mode")
	//	  In this case the Loadbalancer of the primary VMSS/VMAS is selected.
	// 2. "__auto__" mode - service is annotated with __auto__ value, this when loadbalancer from any VMSS/VMAS
	//    is selected which has the minimum rules associated with it.
	// 3. "name" mode - this is when the load balancer from the specified VMSS/VMAS that has the
	//    minimum rules associated with it is selected.
	ServiceAnnotationLoadBalancerMode = "service.beta.kubernetes.io/azure-load-balancer-mode"

	// ServiceAnnotationLoadBalancerAutoModeValue is the annotation used on the service to specify the
	// Azure load balancer auto selection from the availability sets
	ServiceAnnotationLoadBalancerAutoModeValue = "__auto__"

	// ServiceAnnotationDNSLabelName is the annotation used on the service
	// to specify the DNS label name for the service.
	ServiceAnnotationDNSLabelName = "service.beta.kubernetes.io/azure-dns-label-name"

	// ServiceAnnotationSharedSecurityRule is the annotation used on the service
	// to specify that the service should be exposed using an Azure security rule
	// that may be shared with other service, trading specificity of rules for an
	// increase in the number of services that can be exposed. This relies on the
	// Azure "augmented security rules" feature.
	ServiceAnnotationSharedSecurityRule = "service.beta.kubernetes.io/azure-shared-securityrule"

	// ServiceAnnotationLoadBalancerResourceGroup is the annotation used on the service
	// to specify the resource group of load balancer objects that are not in the same resource group as the cluster.
	ServiceAnnotationLoadBalancerResourceGroup = "service.beta.kubernetes.io/azure-load-balancer-resource-group"

	// ServiceAnnotationPIPName specifies the pip that will be applied to load balancer
	ServiceAnnotationPIPName = "service.beta.kubernetes.io/azure-pip-name"

	// ServiceAnnotationIPTagsForPublicIP specifies the iptags used when dynamically creating a public ip
	ServiceAnnotationIPTagsForPublicIP = "service.beta.kubernetes.io/azure-pip-ip-tags"

	// ServiceAnnotationAllowedServiceTag is the annotation used on the service
	// to specify a list of allowed service tags separated by comma
	// Refer https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#service-tags for all supported service tags.
	ServiceAnnotationAllowedServiceTag = "service.beta.kubernetes.io/azure-allowed-service-tags"

	// ServiceAnnotationDenyAllExceptLoadBalancerSourceRanges  denies all traffic to the load balancer except those
	// within the service.Spec.LoadBalancerSourceRanges. Ref: https://github.com/kubernetes-sigs/cloud-provider-azure/issues/374.
	ServiceAnnotationDenyAllExceptLoadBalancerSourceRanges = "service.beta.kubernetes.io/azure-deny-all-except-load-balancer-source-ranges"

	// ServiceAnnotationLoadBalancerIdleTimeout is the annotation used on the service
	// to specify the idle timeout for connections on the load balancer in minutes.
	ServiceAnnotationLoadBalancerIdleTimeout = "service.beta.kubernetes.io/azure-load-balancer-tcp-idle-timeout"

	// ServiceAnnotationLoadBalancerEnableHighAvailabilityPorts is the annotation used on the service
	// to enable the high availability ports on the standard internal load balancer.
	ServiceAnnotationLoadBalancerEnableHighAvailabilityPorts = "service.beta.kubernetes.io/azure-load-balancer-enable-high-availability-ports"

	// ServiceAnnotationLoadBalancerDisableTCPReset is the annotation used on the service
	// to set enableTcpReset to false in load balancer rule. This only works for Azure standard load balancer backed service.
	// TODO(feiskyer): disable-tcp-reset annotations has been deprecated since v1.18, it would removed on v1.20.
	ServiceAnnotationLoadBalancerDisableTCPReset = "service.beta.kubernetes.io/azure-load-balancer-disable-tcp-reset"

	// ServiceAnnotationLoadBalancerHealthProbeProtocol determines the network protocol that the load balancer health probe use.
	// If not set, the local service would use the HTTP and the cluster service would use the TCP by default.
	ServiceAnnotationLoadBalancerHealthProbeProtocol = "service.beta.kubernetes.io/azure-load-balancer-health-probe-protocol"

	// ServiceAnnotationLoadBalancerHealthProbeRequestPath determines the request path of the load balancer health probe.
	// This is only useful for the HTTP and HTTPS, and would be ignored when using TCP. If not set,
	// `/healthz` would be configured by default.
	ServiceAnnotationLoadBalancerHealthProbeRequestPath = "service.beta.kubernetes.io/azure-load-balancer-health-probe-request-path"

	// ServiceAnnotationAzurePIPTags determines what tags should be applied to the public IP of the service. The cluster name
	// and service names tags (which is managed by controller manager itself) would keep unchanged. The supported format
	// is `a=b,c=d,...`. After updated, the old user-assigned tags would not be replaced by the new ones.
	ServiceAnnotationAzurePIPTags = "service.beta.kubernetes.io/azure-pip-tags"

	// ServiceTagKey is the service key applied for public IP tags.
	ServiceTagKey = "service"
	// ClusterNameKey is the cluster name key applied for public IP tags.
	ClusterNameKey = "kubernetes-cluster-name"
	// ServiceUsingDNSKey is the service name consuming the DNS label on the public IP
	ServiceUsingDNSKey = "kubernetes-dns-label-service"

	// DefaultLoadBalancerSourceRanges is the default value of the load balancer source ranges
	DefaultLoadBalancerSourceRanges = "0.0.0.0/0"

	// TrueAnnotationValue is the true annotation value
	TrueAnnotationValue = "true"

	// LoadBalancerMinimumPriority is the minimum priority
	LoadBalancerMinimumPriority = 500
	// LoadBalancerMaximumPriority is the maximum priority
	LoadBalancerMaximumPriority = 4096

	// FrontendIPConfigIDTemplate is the template of the frontend IP configuration
	FrontendIPConfigIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Network/loadBalancers/%s/frontendIPConfigurations/%s"
	// BackendPoolIDTemplate is the template of the backend pool
	BackendPoolIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Network/loadBalancers/%s/backendAddressPools/%s"
	// LoadBalancerProbeIDTemplate is the template of the load balancer probe
	LoadBalancerProbeIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Network/loadBalancers/%s/probes/%s"

	// InternalLoadBalancerNameSuffix is load balancer suffix
	InternalLoadBalancerNameSuffix = "-internal"

	// FrontendIPConfigNameMaxLength is the max length of the frontend IP configuration
	FrontendIPConfigNameMaxLength = 80
	// LoadBalancerRuleNameMaxLength is the max length of the load balancing rule
	LoadBalancerRuleNameMaxLength = 80
)

load balancer

const (
	// VmssVMNotActiveErrorMessage not active means the instance is under deleting from Azure VMSS.
	VmssVMNotActiveErrorMessage = "not an active Virtual Machine Scale Set VM instanceId"
	// OperationCanceledErrorMessage means the operation is canceled by another new operation.
	OperationCanceledErrorMessage = "canceledandsupersededduetoanotheroperation"
	// CannotDeletePublicIPErrorMessageCode means the public IP cannot be deleted
	CannotDeletePublicIPErrorMessageCode = "PublicIPAddressCannotBeDeleted"
	// ReferencedResourceNotProvisionedMessageCode means the referenced resource has not been provisioned
	ReferencedResourceNotProvisionedMessageCode = "ReferencedResourceNotProvisioned"
)

error messages

const (
	// DefaultNodeMaskCIDRIPv4 is default mask size for IPv4 node cidr
	DefaultNodeMaskCIDRIPv4 = 24
	// DefaultNodeMaskCIDRIPv6 is default mask size for IPv6 node cidr
	DefaultNodeMaskCIDRIPv6 = 64
	// DefaultNodeCIDRMaskSize is the default mask size for node cidr
	DefaultNodeCIDRMaskSize = 24
)

node ipam controller

const (
	// ImdsInstanceAPIVersion is the imds instance api version
	ImdsInstanceAPIVersion = "2019-03-11"
	// ImdsLoadBalancerAPIVersion is the imds load balancer api version
	ImdsLoadBalancerAPIVersion = "2020-10-01"
	// ImdsServer is the imds server endpoint
	ImdsServer = "http://169.254.169.254"
	// ImdsInstanceURI is the imds instance uri
	ImdsInstanceURI = "/metadata/instance"
	// ImdsLoadBalancerURI is the imds load balancer uri
	ImdsLoadBalancerURI = "/metadata/loadbalancer"
)

metadata service

const (
	RouteNameFmt       = "%s____%s"
	RouteNameSeparator = "____"
)

routes