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types_shoot.go
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types_shoot.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1alpha1
import (
"time"
autoscalingv1 "k8s.io/api/autoscaling/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
)
// +genclient
// +genclient:method=CreateAdminKubeconfigRequest,verb=create,subresource=adminkubeconfig,input=github.com/gardener/gardener/pkg/apis/authentication/v1alpha1.AdminKubeconfigRequest,result=github.com/gardener/gardener/pkg/apis/authentication/v1alpha1.AdminKubeconfigRequest
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// Shoot represents a Shoot cluster created and managed by Gardener.
type Shoot struct {
metav1.TypeMeta `json:",inline"`
// Standard object metadata.
// +optional
metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
// Specification of the Shoot cluster.
// If the object's deletion timestamp is set, this field is immutable.
// +optional
Spec ShootSpec `json:"spec,omitempty" protobuf:"bytes,2,opt,name=spec"`
// Most recently observed status of the Shoot cluster.
// +optional
Status ShootStatus `json:"status,omitempty" protobuf:"bytes,3,opt,name=status"`
}
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// ShootList is a list of Shoot objects.
type ShootList struct {
metav1.TypeMeta `json:",inline"`
// Standard list object metadata.
// +optional
metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
// Items is the list of Shoots.
Items []Shoot `json:"items" protobuf:"bytes,2,rep,name=items"`
}
// ShootSpec is the specification of a Shoot.
type ShootSpec struct {
// Addons contains information about enabled/disabled addons and their configuration.
// +optional
Addons *Addons `json:"addons,omitempty" protobuf:"bytes,1,opt,name=addons"`
// CloudProfileName is a name of a CloudProfile object. This field is immutable.
CloudProfileName string `json:"cloudProfileName" protobuf:"bytes,2,opt,name=cloudProfileName"`
// DNS contains information about the DNS settings of the Shoot.
// +optional
DNS *DNS `json:"dns,omitempty" protobuf:"bytes,3,opt,name=dns"`
// Extensions contain type and provider information for Shoot extensions.
// +optional
Extensions []Extension `json:"extensions,omitempty" protobuf:"bytes,4,rep,name=extensions"`
// Hibernation contains information whether the Shoot is suspended or not.
// +optional
Hibernation *Hibernation `json:"hibernation,omitempty" protobuf:"bytes,5,opt,name=hibernation"`
// Kubernetes contains the version and configuration settings of the control plane components.
Kubernetes Kubernetes `json:"kubernetes" protobuf:"bytes,6,opt,name=kubernetes"`
// Networking contains information about cluster networking such as CNI Plugin type, CIDRs, ...etc.
Networking Networking `json:"networking" protobuf:"bytes,7,opt,name=networking"`
// Maintenance contains information about the time window for maintenance operations and which
// operations should be performed.
// +optional
Maintenance *Maintenance `json:"maintenance,omitempty" protobuf:"bytes,8,opt,name=maintenance"`
// Monitoring contains information about custom monitoring configurations for the shoot.
// +optional
Monitoring *Monitoring `json:"monitoring,omitempty" protobuf:"bytes,9,opt,name=monitoring"`
// Provider contains all provider-specific and provider-relevant information.
Provider Provider `json:"provider" protobuf:"bytes,10,opt,name=provider"`
// Purpose is the purpose class for this cluster.
// +optional
Purpose *ShootPurpose `json:"purpose,omitempty" protobuf:"bytes,11,opt,name=purpose"`
// Region is a name of a region. This field is immutable.
Region string `json:"region" protobuf:"bytes,12,opt,name=region"`
// SecretBindingName is the name of the a SecretBinding that has a reference to the provider secret.
// The credentials inside the provider secret will be used to create the shoot in the respective account.
// This field is immutable.
SecretBindingName string `json:"secretBindingName" protobuf:"bytes,13,opt,name=secretBindingName"`
// SeedName is the name of the seed cluster that runs the control plane of the Shoot.
// This field is immutable when the SeedChange feature gate is disabled.
// +optional
SeedName *string `json:"seedName,omitempty" protobuf:"bytes,14,opt,name=seedName"`
// SeedSelector is an optional selector which must match a seed's labels for the shoot to be scheduled on that seed.
// +optional
SeedSelector *SeedSelector `json:"seedSelector,omitempty" protobuf:"bytes,15,opt,name=seedSelector"`
// Resources holds a list of named resource references that can be referred to in extension configs by their names.
// +optional
Resources []NamedResourceReference `json:"resources,omitempty" protobuf:"bytes,16,rep,name=resources"`
// Tolerations contains the tolerations for taints on seed clusters.
// +patchMergeKey=key
// +patchStrategy=merge
// +optional
Tolerations []Toleration `json:"tolerations,omitempty" patchStrategy:"merge" patchMergeKey:"key" protobuf:"bytes,17,rep,name=tolerations"`
// ExposureClassName is the optional name of an exposure class to apply a control plane endpoint exposure strategy.
// This field is immutable.
// +optional
ExposureClassName *string `json:"exposureClassName,omitempty" protobuf:"bytes,18,opt,name=exposureClassName"`
// SystemComponents contains the settings of system components in the control or data plane of the Shoot cluster.
// +optional
SystemComponents *SystemComponents `json:"systemComponents" protobuf:"bytes,19,opt,name=systemComponents"`
}
// ShootStatus holds the most recently observed status of the Shoot cluster.
type ShootStatus struct {
// Conditions represents the latest available observations of a Shoots's current state.
// +optional
// +patchMergeKey=type
// +patchStrategy=merge
Conditions []Condition `json:"conditions,omitempty" patchStrategy:"merge" patchMergeKey:"type" protobuf:"bytes,1,rep,name=conditions"`
// Constraints represents conditions of a Shoot's current state that constraint some operations on it.
// +optional
// +patchMergeKey=type
// +patchStrategy=merge
Constraints []Condition `json:"constraints,omitempty" patchStrategy:"merge" patchMergeKey:"type" protobuf:"bytes,2,rep,name=constraints"`
// Gardener holds information about the Gardener which last acted on the Shoot.
Gardener Gardener `json:"gardener" protobuf:"bytes,3,opt,name=gardener"`
// IsHibernated indicates whether the Shoot is currently hibernated.
IsHibernated bool `json:"hibernated" protobuf:"varint,4,opt,name=hibernated"`
// LastOperation holds information about the last operation on the Shoot.
// +optional
LastOperation *LastOperation `json:"lastOperation,omitempty" protobuf:"bytes,5,opt,name=lastOperation"`
// LastError holds information about the last occurred error during an operation.
// +optional
LastError *LastError `json:"lastError,omitempty" protobuf:"bytes,6,opt,name=lastError"`
// LastErrors holds information about the last occurred error(s) during an operation.
// +optional
LastErrors []LastError `json:"lastErrors,omitempty" protobuf:"bytes,7,rep,name=lastErrors"`
// ObservedGeneration is the most recent generation observed for this Shoot. It corresponds to the
// Shoot's generation, which is updated on mutation by the API Server.
// +optional
ObservedGeneration int64 `json:"observedGeneration,omitempty" protobuf:"varint,8,opt,name=observedGeneration"`
// RetryCycleStartTime is the start time of the last retry cycle (used to determine how often an operation
// must be retried until we give up).
// +optional
RetryCycleStartTime *metav1.Time `json:"retryCycleStartTime,omitempty" protobuf:"bytes,9,opt,name=retryCycleStartTime"`
// Seed is the name of the seed cluster that runs the control plane of the Shoot. This value is only written
// after a successful create/reconcile operation. It will be used when control planes are moved between Seeds.
// +optional
Seed *string `json:"seed,omitempty" protobuf:"bytes,10,opt,name=seed"`
// TechnicalID is the name that is used for creating the Seed namespace, the infrastructure resources, and
// basically everything that is related to this particular Shoot. This field is immutable.
TechnicalID string `json:"technicalID" protobuf:"bytes,11,opt,name=technicalID"`
// UID is a unique identifier for the Shoot cluster to avoid portability between Kubernetes clusters.
// It is used to compute unique hashes. This field is immutable.
UID types.UID `json:"uid" protobuf:"bytes,12,opt,name=uid"`
// ClusterIdentity is the identity of the Shoot cluster. This field is immutable.
// +optional
ClusterIdentity *string `json:"clusterIdentity,omitempty" protobuf:"bytes,13,opt,name=clusterIdentity"`
// List of addresses on which the Kube API server can be reached.
// +optional
// +patchMergeKey=name
// +patchStrategy=merge
AdvertisedAddresses []ShootAdvertisedAddress `json:"advertisedAddresses,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,14,rep,name=advertisedAddresses"`
// MigrationStartTime is the time when a migration to a different seed was initiated.
// +optional
MigrationStartTime *metav1.Time `json:"migrationStartTime,omitempty" protobuf:"bytes,15,opt,name=migrationStartTime"`
// Credentials contains information about the shoot credentials.
// +optional
Credentials *ShootCredentials `json:"credentials,omitempty" protobuf:"bytes,16,opt,name=credentials"`
}
// ShootCredentials contains information about the shoot credentials.
type ShootCredentials struct {
// Rotation contains information about the credential rotations.
// +optional
Rotation *ShootCredentialsRotation `json:"rotation,omitempty" protobuf:"bytes,1,opt,name=rotation"`
}
// ShootCredentialsRotation contains information about the rotation of credentials.
type ShootCredentialsRotation struct {
// CertificateAuthorities contains information about the certificate authority credential rotation.
// +optional
CertificateAuthorities *ShootCARotation `json:"certificateAuthorities,omitempty" protobuf:"bytes,1,opt,name=certificateAuthorities"`
// Kubeconfig contains information about the kubeconfig credential rotation.
// +optional
Kubeconfig *ShootKubeconfigRotation `json:"kubeconfig,omitempty" protobuf:"bytes,2,opt,name=kubeconfig"`
// SSHKeypair contains information about the ssh-keypair credential rotation.
// +optional
SSHKeypair *ShootSSHKeypairRotation `json:"sshKeypair,omitempty" protobuf:"bytes,3,opt,name=sshKeypair"`
// Observability contains information about the observability credential rotation.
// +optional
Observability *ShootObservabilityRotation `json:"observability,omitempty" protobuf:"bytes,4,opt,name=observability"`
}
// ShootCARotation contains information about the certificate authority credential rotation.
type ShootCARotation struct {
// Phase describes the phase of the certificate authority credential rotation.
Phase ShootCredentialsRotationPhase `json:"phase" protobuf:"bytes,1,opt,name=phase"`
// LastInitiationTime is the most recent time when the certificate authority credential rotation was initiated.
// +optional
LastInitiationTime *metav1.Time `json:"lastInitiationTime,omitempty" protobuf:"bytes,3,opt,name=lastInitiationTime"`
// LastCompletionTime is the most recent time when the certificate authority credential rotation was successfully
// completed.
// +optional
LastCompletionTime *metav1.Time `json:"lastCompletionTime,omitempty" protobuf:"bytes,2,opt,name=lastCompletionTime"`
}
// ShootKubeconfigRotation contains information about the kubeconfig credential rotation.
type ShootKubeconfigRotation struct {
// LastInitiationTime is the most recent time when the kubeconfig credential rotation was initiated.
// +optional
LastInitiationTime *metav1.Time `json:"lastInitiationTime,omitempty" protobuf:"bytes,1,opt,name=lastInitiationTime"`
// LastCompletionTime is the most recent time when the kubeconfig credential rotation was successfully completed.
// +optional
LastCompletionTime *metav1.Time `json:"lastCompletionTime,omitempty" protobuf:"bytes,2,opt,name=lastCompletionTime"`
}
// ShootSSHKeypairRotation contains information about the ssh-keypair credential rotation.
type ShootSSHKeypairRotation struct {
// LastInitiationTime is the most recent time when the certificate authority credential rotation was initiated.
// +optional
LastInitiationTime *metav1.Time `json:"lastInitiationTime,omitempty" protobuf:"bytes,1,opt,name=lastInitiationTime"`
// LastCompletionTime is the most recent time when the ssh-keypair credential rotation was successfully completed.
// +optional
LastCompletionTime *metav1.Time `json:"lastCompletionTime,omitempty" protobuf:"bytes,2,opt,name=lastCompletionTime"`
}
// ShootObservabilityRotation contains information about the observability credential rotation.
type ShootObservabilityRotation struct {
// LastInitiationTime is the most recent time when the observability credential rotation was initiated.
// +optional
LastInitiationTime *metav1.Time `json:"lastInitiationTime,omitempty" protobuf:"bytes,1,opt,name=lastInitiationTime"`
// LastCompletionTime is the most recent time when the observability credential rotation was successfully completed.
// +optional
LastCompletionTime *metav1.Time `json:"lastCompletionTime,omitempty" protobuf:"bytes,2,opt,name=lastCompletionTime"`
}
// ShootCredentialsRotationPhase is a string alias.
type ShootCredentialsRotationPhase string
const (
// RotationPreparing is a constant for the credentials rotation phase describing that the procedure is being prepared.
RotationPreparing ShootCredentialsRotationPhase = "Preparing"
// RotationPrepared is a constant for the credentials rotation phase describing that the procedure was prepared.
RotationPrepared ShootCredentialsRotationPhase = "Prepared"
// RotationCompleting is a constant for the credentials rotation phase describing that the procedure is being
// completed.
RotationCompleting ShootCredentialsRotationPhase = "Completing"
// RotationCompleted is a constant for the credentials rotation phase describing that the procedure was completed.
RotationCompleted ShootCredentialsRotationPhase = "Completed"
)
// ShootAdvertisedAddress contains information for the shoot's Kube API server.
type ShootAdvertisedAddress struct {
// Name of the advertised address. e.g. external
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// The URL of the API Server. e.g. https://api.foo.bar or https://1.2.3.4
URL string `json:"url" protobuf:"bytes,2,opt,name=url"`
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// Addons relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// Addons is a collection of configuration for specific addons which are managed by the Gardener.
type Addons struct {
// KubernetesDashboard holds configuration settings for the kubernetes dashboard addon.
// +optional
KubernetesDashboard *KubernetesDashboard `json:"kubernetes-dashboard,omitempty" protobuf:"bytes,1,opt,name=kubernetesDashboard"`
// NginxIngress holds configuration settings for the nginx-ingress addon.
// +optional
NginxIngress *NginxIngress `json:"nginx-ingress,omitempty" protobuf:"bytes,2,opt,name=nginxIngress"`
}
// Addon allows enabling or disabling a specific addon and is used to derive from.
type Addon struct {
// Enabled indicates whether the addon is enabled or not.
Enabled bool `json:"enabled" protobuf:"varint,1,opt,name=enabled"`
}
// KubernetesDashboard describes configuration values for the kubernetes-dashboard addon.
type KubernetesDashboard struct {
Addon `json:",inline" protobuf:"bytes,2,opt,name=addon"`
// AuthenticationMode defines the authentication mode for the kubernetes-dashboard.
// +optional
AuthenticationMode *string `json:"authenticationMode,omitempty" protobuf:"bytes,1,opt,name=authenticationMode"`
}
const (
// KubernetesDashboardAuthModeBasic uses basic authentication mode for auth.
KubernetesDashboardAuthModeBasic = "basic"
// KubernetesDashboardAuthModeToken uses token-based mode for auth.
KubernetesDashboardAuthModeToken = "token"
)
// NginxIngress describes configuration values for the nginx-ingress addon.
type NginxIngress struct {
Addon `json:",inline" protobuf:"bytes,4,opt,name=addon"`
// LoadBalancerSourceRanges is list of allowed IP sources for NginxIngress
// +optional
LoadBalancerSourceRanges []string `json:"loadBalancerSourceRanges,omitempty" protobuf:"bytes,1,rep,name=loadBalancerSourceRanges"`
// Config contains custom configuration for the nginx-ingress-controller configuration.
// See https://github.com/kubernetes/ingress-nginx/blob/master/docs/user-guide/nginx-configuration/configmap.md#configuration-options
// +optional
Config map[string]string `json:"config,omitempty" protobuf:"bytes,2,rep,name=config"`
// ExternalTrafficPolicy controls the `.spec.externalTrafficPolicy` value of the load balancer `Service`
// exposing the nginx-ingress. Defaults to `Cluster`.
// +optional
ExternalTrafficPolicy *corev1.ServiceExternalTrafficPolicyType `json:"externalTrafficPolicy,omitempty" protobuf:"bytes,3,opt,name=externalTrafficPolicy,casttype=k8s.io/api/core/v1.ServiceExternalTrafficPolicyType"`
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// DNS relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// DNS holds information about the provider, the hosted zone id and the domain.
type DNS struct {
// Domain is the external available domain of the Shoot cluster. This domain will be written into the
// kubeconfig that is handed out to end-users. This field is immutable.
// +optional
Domain *string `json:"domain,omitempty" protobuf:"bytes,1,opt,name=domain"`
// Providers is a list of DNS providers that shall be enabled for this shoot cluster. Only relevant if
// not a default domain is used.
// +patchMergeKey=type
// +patchStrategy=merge
// +optional
Providers []DNSProvider `json:"providers,omitempty" patchStrategy:"merge" patchMergeKey:"type" protobuf:"bytes,2,rep,name=providers"`
}
// DNSProvider contains information about a DNS provider.
type DNSProvider struct {
// Domains contains information about which domains shall be included/excluded for this provider.
// +optional
Domains *DNSIncludeExclude `json:"domains,omitempty" protobuf:"bytes,1,opt,name=domains"`
// Primary indicates that this DNSProvider is used for shoot related domains.
// +optional
Primary *bool `json:"primary,omitempty" protobuf:"varint,2,opt,name=primary"`
// SecretName is a name of a secret containing credentials for the stated domain and the
// provider. When not specified, the Gardener will use the cloud provider credentials referenced
// by the Shoot and try to find respective credentials there (primary provider only). Specifying this field may override
// this behavior, i.e. forcing the Gardener to only look into the given secret.
// +optional
SecretName *string `json:"secretName,omitempty" protobuf:"bytes,3,opt,name=secretName"`
// Type is the DNS provider type.
// +optional
Type *string `json:"type,omitempty" protobuf:"bytes,4,opt,name=type"`
// Zones contains information about which hosted zones shall be included/excluded for this provider.
// +optional
Zones *DNSIncludeExclude `json:"zones,omitempty" protobuf:"bytes,5,opt,name=zones"`
}
// DNSIncludeExclude contains information about which domains shall be included/excluded.
type DNSIncludeExclude struct {
// Include is a list of domains that shall be included.
// +optional
Include []string `json:"include,omitempty" protobuf:"bytes,1,rep,name=include"`
// Exclude is a list of domains that shall be excluded.
// +optional
Exclude []string `json:"exclude,omitempty" protobuf:"bytes,2,rep,name=exclude"`
}
// DefaultDomain is the default value in the Shoot's '.spec.dns.domain' when '.spec.dns.provider' is 'unmanaged'
const DefaultDomain = "cluster.local"
//////////////////////////////////////////////////////////////////////////////////////////////////
// Extension relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// Extension contains type and provider information for Shoot extensions.
type Extension struct {
// Type is the type of the extension resource.
Type string `json:"type" protobuf:"bytes,1,opt,name=type"`
// ProviderConfig is the configuration passed to extension resource.
// +optional
ProviderConfig *runtime.RawExtension `json:"providerConfig,omitempty" protobuf:"bytes,2,opt,name=providerConfig"`
// Disabled allows to disable extensions that were marked as 'globally enabled' by Gardener administrators.
// +optional
Disabled *bool `json:"disabled,omitempty" protobuf:"varint,3,opt,name=disabled"`
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// NamedResourceReference relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// NamedResourceReference is a named reference to a resource.
type NamedResourceReference struct {
// Name of the resource reference.
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// ResourceRef is a reference to a resource.
ResourceRef autoscalingv1.CrossVersionObjectReference `json:"resourceRef" protobuf:"bytes,2,opt,name=resourceRef"`
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// Hibernation relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// Hibernation contains information whether the Shoot is suspended or not.
type Hibernation struct {
// Enabled specifies whether the Shoot needs to be hibernated or not. If it is true, the Shoot's desired state is to be hibernated.
// If it is false or nil, the Shoot's desired state is to be awakened.
// +optional
Enabled *bool `json:"enabled,omitempty" protobuf:"varint,1,opt,name=enabled"`
// Schedules determine the hibernation schedules.
// +optional
Schedules []HibernationSchedule `json:"schedules,omitempty" protobuf:"bytes,2,rep,name=schedules"`
}
// HibernationSchedule determines the hibernation schedule of a Shoot.
// A Shoot will be regularly hibernated at each start time and will be woken up at each end time.
// Start or End can be omitted, though at least one of each has to be specified.
type HibernationSchedule struct {
// Start is a Cron spec at which time a Shoot will be hibernated.
// +optional
Start *string `json:"start,omitempty" protobuf:"bytes,1,opt,name=start"`
// End is a Cron spec at which time a Shoot will be woken up.
// +optional
End *string `json:"end,omitempty" protobuf:"bytes,2,opt,name=end"`
// Location is the time location in which both start and and shall be evaluated.
// +optional
Location *string `json:"location,omitempty" protobuf:"bytes,3,opt,name=location"`
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// Kubernetes relevant types //
//////////////////////////////////////////////////////////////////////////////////////////////////
// Kubernetes contains the version and configuration variables for the Shoot control plane.
type Kubernetes struct {
// AllowPrivilegedContainers indicates whether privileged containers are allowed in the Shoot (default: true).
// +optional
AllowPrivilegedContainers *bool `json:"allowPrivilegedContainers,omitempty" protobuf:"varint,1,opt,name=allowPrivilegedContainers"`
// ClusterAutoscaler contains the configuration flags for the Kubernetes cluster autoscaler.
// +optional
ClusterAutoscaler *ClusterAutoscaler `json:"clusterAutoscaler,omitempty" protobuf:"bytes,2,opt,name=clusterAutoscaler"`
// KubeAPIServer contains configuration settings for the kube-apiserver.
// +optional
KubeAPIServer *KubeAPIServerConfig `json:"kubeAPIServer,omitempty" protobuf:"bytes,3,opt,name=kubeAPIServer"`
// KubeControllerManager contains configuration settings for the kube-controller-manager.
// +optional
KubeControllerManager *KubeControllerManagerConfig `json:"kubeControllerManager,omitempty" protobuf:"bytes,4,opt,name=kubeControllerManager"`
// KubeScheduler contains configuration settings for the kube-scheduler.
// +optional
KubeScheduler *KubeSchedulerConfig `json:"kubeScheduler,omitempty" protobuf:"bytes,5,opt,name=kubeScheduler"`
// KubeProxy contains configuration settings for the kube-proxy.
// +optional
KubeProxy *KubeProxyConfig `json:"kubeProxy,omitempty" protobuf:"bytes,6,opt,name=kubeProxy"`
// Kubelet contains configuration settings for the kubelet.
// +optional
Kubelet *KubeletConfig `json:"kubelet,omitempty" protobuf:"bytes,7,opt,name=kubelet"`
// Version is the semantic Kubernetes version to use for the Shoot cluster.
Version string `json:"version" protobuf:"bytes,8,opt,name=version"`
// VerticalPodAutoscaler contains the configuration flags for the Kubernetes vertical pod autoscaler.
// +optional
VerticalPodAutoscaler *VerticalPodAutoscaler `json:"verticalPodAutoscaler,omitempty" protobuf:"bytes,9,opt,name=verticalPodAutoscaler"`
// EnableStaticTokenKubeconfig indicates whether static token kubeconfig secret should be present in garden cluster
// (default: true).
// +optional
EnableStaticTokenKubeconfig *bool `json:"enableStaticTokenKubeconfig,omitempty" protobuf:"varint,10,opt,name=enableStaticTokenKubeconfig"`
}
// ClusterAutoscaler contains the configuration flags for the Kubernetes cluster autoscaler.
type ClusterAutoscaler struct {
// ScaleDownDelayAfterAdd defines how long after scale up that scale down evaluation resumes (default: 1 hour).
// +optional
ScaleDownDelayAfterAdd *metav1.Duration `json:"scaleDownDelayAfterAdd,omitempty" protobuf:"bytes,1,opt,name=scaleDownDelayAfterAdd"`
// ScaleDownDelayAfterDelete how long after node deletion that scale down evaluation resumes, defaults to scanInterval (default: 0 secs).
// +optional
ScaleDownDelayAfterDelete *metav1.Duration `json:"scaleDownDelayAfterDelete,omitempty" protobuf:"bytes,2,opt,name=scaleDownDelayAfterDelete"`
// ScaleDownDelayAfterFailure how long after scale down failure that scale down evaluation resumes (default: 3 mins).
// +optional
ScaleDownDelayAfterFailure *metav1.Duration `json:"scaleDownDelayAfterFailure,omitempty" protobuf:"bytes,3,opt,name=scaleDownDelayAfterFailure"`
// ScaleDownUnneededTime defines how long a node should be unneeded before it is eligible for scale down (default: 30 mins).
// +optional
ScaleDownUnneededTime *metav1.Duration `json:"scaleDownUnneededTime,omitempty" protobuf:"bytes,4,opt,name=scaleDownUnneededTime"`
// ScaleDownUtilizationThreshold defines the threshold in decimal (0.0 - 1.0) under which a node is being removed (default: 0.5).
// +optional
ScaleDownUtilizationThreshold *float64 `json:"scaleDownUtilizationThreshold,omitempty" protobuf:"fixed64,5,opt,name=scaleDownUtilizationThreshold"`
// ScanInterval how often cluster is reevaluated for scale up or down (default: 10 secs).
// +optional
ScanInterval *metav1.Duration `json:"scanInterval,omitempty" protobuf:"bytes,6,opt,name=scanInterval"`
// Expander defines the algorithm to use during scale up (default: least-waste).
// See: https://github.com/gardener/autoscaler/blob/machine-controller-manager-provider/cluster-autoscaler/FAQ.md#what-are-expanders.
// +optional
Expander *ExpanderMode `json:"expander,omitempty" protobuf:"bytes,7,opt,name=expander"`
// MaxNodeProvisionTime defines how long CA waits for node to be provisioned (default: 20 mins).
// +optional
MaxNodeProvisionTime *metav1.Duration `json:"maxNodeProvisionTime,omitempty" protobuf:"bytes,8,opt,name=maxNodeProvisionTime"`
// MaxGracefulTerminationSeconds is the number of seconds CA waits for pod termination when trying to scale down a node (default: 600).
// +optional
MaxGracefulTerminationSeconds *int32 `json:"maxGracefulTerminationSeconds,omitempty" protobuf:"varint,9,opt,name=maxGracefulTerminationSeconds"`
// IgnoreTaints specifies a list of taint keys to ignore in node templates when considering to scale a node group.
// +optional
IgnoreTaints []string `json:"ignoreTaints,omitempty" protobuf:"bytes,10,opt,name=ignoreTaints"`
}
// ExpanderMode is type used for Expander values
type ExpanderMode string
const (
// ClusterAutoscalerExpanderLeastWaste selects the node group that will have the least idle CPU (if tied, unused memory) after scale-up.
// This is useful when you have different classes of nodes, for example, high CPU or high memory nodes, and
// only want to expand those when there are pending pods that need a lot of those resources.
// This is the default value.
ClusterAutoscalerExpanderLeastWaste ExpanderMode = "least-waste"
// ClusterAutoscalerExpanderMostPods selects the node group that would be able to schedule the most pods when scaling up.
// This is useful when you are using nodeSelector to make sure certain pods land on certain nodes.
// Note that this won't cause the autoscaler to select bigger nodes vs. smaller, as it can add multiple smaller nodes at once.
ClusterAutoscalerExpanderMostPods ExpanderMode = "most-pods"
// ClusterAutoscalerExpanderPriority selects the node group that has the highest priority assigned by the user. For configurations,
// See: https://github.com/gardener/autoscaler/blob/machine-controller-manager-provider/cluster-autoscaler/expander/priority/readme.md
ClusterAutoscalerExpanderPriority ExpanderMode = "priority"
// ClusterAutoscalerExpanderRandom should be used when you don't have a particular need
// for the node groups to scale differently.
ClusterAutoscalerExpanderRandom ExpanderMode = "random"
)
// VerticalPodAutoscaler contains the configuration flags for the Kubernetes vertical pod autoscaler.
type VerticalPodAutoscaler struct {
// Enabled specifies whether the Kubernetes VPA shall be enabled for the shoot cluster.
Enabled bool `json:"enabled" protobuf:"varint,1,opt,name=enabled"`
// EvictAfterOOMThreshold defines the threshold that will lead to pod eviction in case it OOMed in less than the given
// threshold since its start and if it has only one container (default: 10m0s).
// +optional
EvictAfterOOMThreshold *metav1.Duration `json:"evictAfterOOMThreshold,omitempty" protobuf:"bytes,2,opt,name=evictAfterOOMThreshold"`
// EvictionRateBurst defines the burst of pods that can be evicted (default: 1)
// +optional
EvictionRateBurst *int32 `json:"evictionRateBurst,omitempty" protobuf:"varint,3,opt,name=evictionRateBurst"`
// EvictionRateLimit defines the number of pods that can be evicted per second. A rate limit set to 0 or -1 will
// disable the rate limiter (default: -1).
// +optional
EvictionRateLimit *float64 `json:"evictionRateLimit,omitempty" protobuf:"fixed64,4,opt,name=evictionRateLimit"`
// EvictionTolerance defines the fraction of replica count that can be evicted for update in case more than one
// pod can be evicted (default: 0.5).
// +optional
EvictionTolerance *float64 `json:"evictionTolerance,omitempty" protobuf:"fixed64,5,opt,name=evictionTolerance"`
// RecommendationMarginFraction is the fraction of usage added as the safety margin to the recommended request
// (default: 0.15).
// +optional
RecommendationMarginFraction *float64 `json:"recommendationMarginFraction,omitempty" protobuf:"fixed64,6,opt,name=recommendationMarginFraction"`
// UpdaterInterval is the interval how often the updater should run (default: 1m0s).
// +optional
UpdaterInterval *metav1.Duration `json:"updaterInterval,omitempty" protobuf:"bytes,7,opt,name=updaterInterval"`
// RecommenderInterval is the interval how often metrics should be fetched (default: 1m0s).
// +optional
RecommenderInterval *metav1.Duration `json:"recommenderInterval,omitempty" protobuf:"bytes,8,opt,name=recommenderInterval"`
}
const (
// DefaultEvictionRateBurst is the default value for the EvictionRateBurst field in the VPA configuration.
DefaultEvictionRateBurst int32 = 1
// DefaultEvictionRateLimit is the default value for the EvictionRateLimit field in the VPA configuration.
DefaultEvictionRateLimit float64 = -1
// DefaultEvictionTolerance is the default value for the EvictionTolerance field in the VPA configuration.
DefaultEvictionTolerance = 0.5
// DefaultRecommendationMarginFraction is the default value for the RecommendationMarginFraction field in the VPA configuration.
DefaultRecommendationMarginFraction = 0.15
)
var (
// DefaultEvictAfterOOMThreshold is the default value for the EvictAfterOOMThreshold field in the VPA configuration.
DefaultEvictAfterOOMThreshold = metav1.Duration{Duration: 10 * time.Minute}
// DefaultUpdaterInterval is the default value for the UpdaterInterval field in the VPA configuration.
DefaultUpdaterInterval = metav1.Duration{Duration: time.Minute}
// DefaultRecommenderInterval is the default value for the RecommenderInterval field in the VPA configuration.
DefaultRecommenderInterval = metav1.Duration{Duration: time.Minute}
)
// KubernetesConfig contains common configuration fields for the control plane components.
type KubernetesConfig struct {
// FeatureGates contains information about enabled feature gates.
// +optional
FeatureGates map[string]bool `json:"featureGates,omitempty" protobuf:"bytes,1,rep,name=featureGates"`
}
// KubeAPIServerConfig contains configuration settings for the kube-apiserver.
type KubeAPIServerConfig struct {
KubernetesConfig `json:",inline" protobuf:"bytes,1,opt,name=kubernetesConfig"`
// AdmissionPlugins contains the list of user-defined admission plugins (additional to those managed by Gardener), and, if desired, the corresponding
// configuration.
// +patchMergeKey=name
// +patchStrategy=merge
// +optional
AdmissionPlugins []AdmissionPlugin `json:"admissionPlugins,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,rep,name=admissionPlugins"`
// APIAudiences are the identifiers of the API. The service account token authenticator will
// validate that tokens used against the API are bound to at least one of these audiences.
// Defaults to ["kubernetes"].
// +optional
APIAudiences []string `json:"apiAudiences,omitempty" protobuf:"bytes,3,rep,name=apiAudiences"`
// AuditConfig contains configuration settings for the audit of the kube-apiserver.
// +optional
AuditConfig *AuditConfig `json:"auditConfig,omitempty" protobuf:"bytes,4,opt,name=auditConfig"`
// EnableBasicAuthentication defines whether basic authentication should be enabled for this cluster or not.
// +optional
EnableBasicAuthentication *bool `json:"enableBasicAuthentication,omitempty" protobuf:"varint,5,opt,name=enableBasicAuthentication"`
// OIDCConfig contains configuration settings for the OIDC provider.
// +optional
OIDCConfig *OIDCConfig `json:"oidcConfig,omitempty" protobuf:"bytes,6,opt,name=oidcConfig"`
// RuntimeConfig contains information about enabled or disabled APIs.
// +optional
RuntimeConfig map[string]bool `json:"runtimeConfig,omitempty" protobuf:"bytes,7,rep,name=runtimeConfig"`
// ServiceAccountConfig contains configuration settings for the service account handling
// of the kube-apiserver.
// +optional
ServiceAccountConfig *ServiceAccountConfig `json:"serviceAccountConfig,omitempty" protobuf:"bytes,8,opt,name=serviceAccountConfig"`
// WatchCacheSizes contains configuration of the API server's watch cache sizes.
// Configuring these flags might be useful for large-scale Shoot clusters with a lot of parallel update requests
// and a lot of watching controllers (e.g. large shooted Seed clusters). When the API server's watch cache's
// capacity is too small to cope with the amount of update requests and watchers for a particular resource, it
// might happen that controller watches are permanently stopped with `too old resource version` errors.
// Starting from kubernetes v1.19, the API server's watch cache size is adapted dynamically and setting the watch
// cache size flags will have no effect, except when setting it to 0 (which disables the watch cache).
// +optional
WatchCacheSizes *WatchCacheSizes `json:"watchCacheSizes,omitempty" protobuf:"bytes,9,opt,name=watchCacheSizes"`
// Requests contains configuration for request-specific settings for the kube-apiserver.
// +optional
Requests *KubeAPIServerRequests `json:"requests,omitempty" protobuf:"bytes,10,opt,name=requests"`
// EnableAnonymousAuthentication defines whether anonymous requests to the secure port
// of the API server should be allowed (flag `--anonymous-auth`).
// See: https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/
// +optional
EnableAnonymousAuthentication *bool `json:"enableAnonymousAuthentication,omitempty" protobuf:"varint,11,opt,name=enableAnonymousAuthentication"`
// EventTTL controls the amount of time to retain events.
// Defaults to 1h.
// +optional
EventTTL *metav1.Duration `json:"eventTTL,omitempty" protobuf:"bytes,12,opt,name=eventTTL"`
}
// KubeAPIServerRequests contains configuration for request-specific settings for the kube-apiserver.
type KubeAPIServerRequests struct {
// MaxNonMutatingInflight is the maximum number of non-mutating requests in flight at a given time. When the server
// exceeds this, it rejects requests.
// +optional
MaxNonMutatingInflight *int32 `json:"maxNonMutatingInflight,omitempty" protobuf:"bytes,1,name=maxNonMutatingInflight"`
// MaxMutatingInflight is the maximum number of mutating requests in flight at a given time. When the server
// exceeds this, it rejects requests.
// +optional
MaxMutatingInflight *int32 `json:"maxMutatingInflight,omitempty" protobuf:"bytes,2,name=maxMutatingInflight"`
}
// ServiceAccountConfig is the kube-apiserver configuration for service accounts.
type ServiceAccountConfig struct {
// Issuer is the identifier of the service account token issuer. The issuer will assert this
// identifier in "iss" claim of issued tokens. This value is used to generate new service account tokens.
// This value is a string or URI. Defaults to URI of the API server.
// +optional
Issuer *string `json:"issuer,omitempty" protobuf:"bytes,1,opt,name=issuer"`
// SigningKeySecret is a reference to a secret that contains an optional private key of the
// service account token issuer. The issuer will sign issued ID tokens with this private key.
// Only useful if service account tokens are also issued by another external system.
// +optional
SigningKeySecret *corev1.LocalObjectReference `json:"signingKeySecretName,omitempty" protobuf:"bytes,2,opt,name=signingKeySecretName"`
// ExtendTokenExpiration turns on projected service account expiration extension during token generation, which
// helps safe transition from legacy token to bound service account token feature. If this flag is enabled,
// admission injected tokens would be extended up to 1 year to prevent unexpected failure during transition,
// ignoring value of service-account-max-token-expiration.
// +optional
ExtendTokenExpiration *bool `json:"extendTokenExpiration,omitempty" protobuf:"bytes,3,opt,name=extendTokenExpiration"`
// MaxTokenExpiration is the maximum validity duration of a token created by the service account token issuer. If an
// otherwise valid TokenRequest with a validity duration larger than this value is requested, a token will be issued
// with a validity duration of this value.
// This field must be within [30d,90d] when the ShootMaxTokenExpirationValidation feature gate is enabled.
// This field will be overwritten to be within [30d,90d] when the ShootMaxTokenExpirationOverwrite feature gate is enabled.
// +optional
MaxTokenExpiration *metav1.Duration `json:"maxTokenExpiration,omitempty" protobuf:"bytes,4,opt,name=maxTokenExpiration"`
// AcceptedIssuers is an additional set of issuers that are used to determine which service account tokens are accepted.
// These values are not used to generate new service account tokens. Only useful when service account tokens are also
// issued by another external system or a change of the current issuer that is used for generating tokens is being performed.
// This field is only available for Kubernetes v1.22 or later.
// +optional
AcceptedIssuers []string `json:"acceptedIssuers,omitempty" protobuf:"bytes,5,opt,name=acceptedIssuers"`
}
// AuditConfig contains settings for audit of the api server
type AuditConfig struct {
// AuditPolicy contains configuration settings for audit policy of the kube-apiserver.
// +optional
AuditPolicy *AuditPolicy `json:"auditPolicy,omitempty" protobuf:"bytes,1,opt,name=auditPolicy"`
}
// AuditPolicy contains audit policy for kube-apiserver
type AuditPolicy struct {
// ConfigMapRef is a reference to a ConfigMap object in the same namespace,
// which contains the audit policy for the kube-apiserver.
// +optional
ConfigMapRef *corev1.ObjectReference `json:"configMapRef,omitempty" protobuf:"bytes,1,opt,name=configMapRef"`
}
// OIDCConfig contains configuration settings for the OIDC provider.
// Note: Descriptions were taken from the Kubernetes documentation.
type OIDCConfig struct {
// If set, the OpenID server's certificate will be verified by one of the authorities in the oidc-ca-file, otherwise the host's root CA set will be used.
// +optional
CABundle *string `json:"caBundle,omitempty" protobuf:"bytes,1,opt,name=caBundle"`
// ClientAuthentication can optionally contain client configuration used for kubeconfig generation.
// +optional
ClientAuthentication *OpenIDConnectClientAuthentication `json:"clientAuthentication,omitempty" protobuf:"bytes,2,opt,name=clientAuthentication"`
// The client ID for the OpenID Connect client, must be set if oidc-issuer-url is set.
// +optional
ClientID *string `json:"clientID,omitempty" protobuf:"bytes,3,opt,name=clientID"`
// If provided, the name of a custom OpenID Connect claim for specifying user groups. The claim value is expected to be a string or array of strings. This flag is experimental, please see the authentication documentation for further details.
// +optional
GroupsClaim *string `json:"groupsClaim,omitempty" protobuf:"bytes,4,opt,name=groupsClaim"`
// If provided, all groups will be prefixed with this value to prevent conflicts with other authentication strategies.
// +optional
GroupsPrefix *string `json:"groupsPrefix,omitempty" protobuf:"bytes,5,opt,name=groupsPrefix"`
// The URL of the OpenID issuer, only HTTPS scheme will be accepted. If set, it will be used to verify the OIDC JSON Web Token (JWT).
// +optional
IssuerURL *string `json:"issuerURL,omitempty" protobuf:"bytes,6,opt,name=issuerURL"`
// key=value pairs that describes a required claim in the ID Token. If set, the claim is verified to be present in the ID Token with a matching value.
// +optional
RequiredClaims map[string]string `json:"requiredClaims,omitempty" protobuf:"bytes,7,rep,name=requiredClaims"`
// List of allowed JOSE asymmetric signing algorithms. JWTs with a 'alg' header value not in this list will be rejected. Values are defined by RFC 7518 https://tools.ietf.org/html/rfc7518#section-3.1
// +optional
SigningAlgs []string `json:"signingAlgs,omitempty" protobuf:"bytes,8,rep,name=signingAlgs"`
// The OpenID claim to use as the user name. Note that claims other than the default ('sub') is not guaranteed to be unique and immutable. This flag is experimental, please see the authentication documentation for further details. (default "sub")
// +optional
UsernameClaim *string `json:"usernameClaim,omitempty" protobuf:"bytes,9,opt,name=usernameClaim"`
// If provided, all usernames will be prefixed with this value. If not provided, username claims other than 'email' are prefixed by the issuer URL to avoid clashes. To skip any prefixing, provide the value '-'.
// +optional
UsernamePrefix *string `json:"usernamePrefix,omitempty" protobuf:"bytes,10,opt,name=usernamePrefix"`
}
// OpenIDConnectClientAuthentication contains configuration for OIDC clients.
type OpenIDConnectClientAuthentication struct {
// Extra configuration added to kubeconfig's auth-provider.
// Must not be any of idp-issuer-url, client-id, client-secret, idp-certificate-authority, idp-certificate-authority-data, id-token or refresh-token
// +optional
ExtraConfig map[string]string `json:"extraConfig,omitempty" protobuf:"bytes,1,rep,name=extraConfig"`
// The client Secret for the OpenID Connect client.
// +optional
Secret *string `json:"secret,omitempty" protobuf:"bytes,2,opt,name=secret"`
}
// AdmissionPlugin contains information about a specific admission plugin and its corresponding configuration.
type AdmissionPlugin struct {
// Name is the name of the plugin.
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// Config is the configuration of the plugin.
// +optional
Config *runtime.RawExtension `json:"config,omitempty" protobuf:"bytes,2,opt,name=config"`
}
// WatchCacheSizes contains configuration of the API server's watch cache sizes.
type WatchCacheSizes struct {
// Default configures the default watch cache size of the kube-apiserver
// (flag `--default-watch-cache-size`, defaults to 100).
// See: https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/
// +optional
Default *int32 `json:"default,omitempty" protobuf:"varint,1,opt,name=default"`
// Resources configures the watch cache size of the kube-apiserver per resource
// (flag `--watch-cache-sizes`).
// See: https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/
// +optional
Resources []ResourceWatchCacheSize `json:"resources,omitempty" protobuf:"bytes,2,rep,name=resources"`
}
// ResourceWatchCacheSize contains configuration of the API server's watch cache size for one specific resource.
type ResourceWatchCacheSize struct {
// APIGroup is the API group of the resource for which the watch cache size should be configured.
// An unset value is used to specify the legacy core API (e.g. for `secrets`).
// +optional
APIGroup *string `json:"apiGroup,omitempty" protobuf:"bytes,1,opt,name=apiGroup"`
// Resource is the name of the resource for which the watch cache size should be configured
// (in lowercase plural form, e.g. `secrets`).
Resource string `json:"resource" protobuf:"bytes,2,opt,name=resource"`
// CacheSize specifies the watch cache size that should be configured for the specified resource.
CacheSize int32 `json:"size" protobuf:"varint,3,opt,name=size"`
}
// KubeControllerManagerConfig contains configuration settings for the kube-controller-manager.
type KubeControllerManagerConfig struct {
KubernetesConfig `json:",inline" protobuf:"bytes,1,opt,name=kubernetesConfig"`
// HorizontalPodAutoscalerConfig contains horizontal pod autoscaler configuration settings for the kube-controller-manager.
// +optional
HorizontalPodAutoscalerConfig *HorizontalPodAutoscalerConfig `json:"horizontalPodAutoscaler,omitempty" protobuf:"bytes,2,opt,name=horizontalPodAutoscaler"`
// NodeCIDRMaskSize defines the mask size for node cidr in cluster (default is 24). This field is immutable.
// +optional
NodeCIDRMaskSize *int32 `json:"nodeCIDRMaskSize,omitempty" protobuf:"varint,3,opt,name=nodeCIDRMaskSize"`
// PodEvictionTimeout defines the grace period for deleting pods on failed nodes. Defaults to 2m.
// +optional
PodEvictionTimeout *metav1.Duration `json:"podEvictionTimeout,omitempty" protobuf:"bytes,4,opt,name=podEvictionTimeout"`
// NodeMonitorGracePeriod defines the grace period before an unresponsive node is marked unhealthy.
// +optional
NodeMonitorGracePeriod *metav1.Duration `json:"nodeMonitorGracePeriod,omitempty" protobuf:"bytes,5,opt,name=nodeMonitorGracePeriod"`
}
// HorizontalPodAutoscalerConfig contains horizontal pod autoscaler configuration settings for the kube-controller-manager.
// Note: Descriptions were taken from the Kubernetes documentation.
type HorizontalPodAutoscalerConfig struct {
// The period after which a ready pod transition is considered to be the first.
// +optional
CPUInitializationPeriod *metav1.Duration `json:"cpuInitializationPeriod,omitempty" protobuf:"bytes,1,opt,name=cpuInitializationPeriod"`
// The configurable window at which the controller will choose the highest recommendation for autoscaling.
// +optional
DownscaleStabilization *metav1.Duration `json:"downscaleStabilization,omitempty" protobuf:"bytes,3,opt,name=downscaleStabilization"`
// The configurable period at which the horizontal pod autoscaler considers a Pod “not yet ready” given that it’s unready and it has transitioned to unready during that time.
// +optional
InitialReadinessDelay *metav1.Duration `json:"initialReadinessDelay,omitempty" protobuf:"bytes,4,opt,name=initialReadinessDelay"`
// The period for syncing the number of pods in horizontal pod autoscaler.
// +optional
SyncPeriod *metav1.Duration `json:"syncPeriod,omitempty" protobuf:"bytes,5,opt,name=syncPeriod"`
// The minimum change (from 1.0) in the desired-to-actual metrics ratio for the horizontal pod autoscaler to consider scaling.
// +optional
Tolerance *float64 `json:"tolerance,omitempty" protobuf:"fixed64,6,opt,name=tolerance"`
}
const (
// DefaultHPASyncPeriod is a constant for the default HPA sync period for a Shoot cluster.
DefaultHPASyncPeriod = 30 * time.Second
// DefaultHPATolerance is a constant for the default HPA tolerance for a Shoot cluster.
DefaultHPATolerance = 0.1
// DefaultDownscaleStabilization is the default HPA downscale stabilization window for a Shoot cluster
DefaultDownscaleStabilization = 5 * time.Minute
// DefaultInitialReadinessDelay is for the default HPA ReadinessDelay value in the Shoot cluster
DefaultInitialReadinessDelay = 30 * time.Second
// DefaultCPUInitializationPeriod is the for the default value of the CPUInitializationPeriod in the Shoot cluster
DefaultCPUInitializationPeriod = 5 * time.Minute
)
// KubeSchedulerConfig contains configuration settings for the kube-scheduler.
type KubeSchedulerConfig struct {
KubernetesConfig `json:",inline" protobuf:"bytes,1,opt,name=kubernetesConfig"`
// KubeMaxPDVols allows to configure the `KUBE_MAX_PD_VOLS` environment variable for the kube-scheduler.
// Please find more information here: https://kubernetes.io/docs/concepts/storage/storage-limits/#custom-limits
// Note that using this field is considered alpha-/experimental-level and is on your own risk. You should be aware
// of all the side-effects and consequences when changing it.
// +optional
KubeMaxPDVols *string `json:"kubeMaxPDVols,omitempty" protobuf:"bytes,2,opt,name=kubeMaxPDVols"`
}
// KubeProxyConfig contains configuration settings for the kube-proxy.
type KubeProxyConfig struct {
KubernetesConfig `json:",inline" protobuf:"bytes,1,opt,name=kubernetesConfig"`
// Mode specifies which proxy mode to use.
// defaults to IPTables.
// +optional
Mode *ProxyMode `json:"mode,omitempty" protobuf:"bytes,2,opt,name=mode,casttype=ProxyMode"`
// Enabled indicates whether kube-proxy should be deployed or not.
// Depending on the networking extensions switching kube-proxy off might be rejected. Consulting the respective documentation of the used networking extension is recommended before using this field.
// defaults to true if not specified.
// +optional
Enabled *bool `json:"enabled,omitempty" protobuf:"varint,3,opt,name=enabled"`
}
// ProxyMode available in Linux platform: 'userspace' (older, going to be EOL), 'iptables'
// (newer, faster), 'ipvs' (newest, better in performance and scalability).
// As of now only 'iptables' and 'ipvs' is supported by Gardener.
// In Linux platform, if the iptables proxy is selected, regardless of how, but the system's kernel or iptables versions are
// insufficient, this always falls back to the userspace proxy. IPVS mode will be enabled when proxy mode is set to 'ipvs',
// and the fall back path is firstly iptables and then userspace.
type ProxyMode string
const (
// ProxyModeIPTables uses iptables as proxy implementation.
ProxyModeIPTables ProxyMode = "IPTables"
// ProxyModeIPVS uses ipvs as proxy implementation.
ProxyModeIPVS ProxyMode = "IPVS"
)
// KubeletConfig contains configuration settings for the kubelet.
type KubeletConfig struct {
KubernetesConfig `json:",inline" protobuf:"bytes,1,opt,name=kubernetesConfig"`
// CPUCFSQuota allows you to disable/enable CPU throttling for Pods.
// +optional
CPUCFSQuota *bool `json:"cpuCFSQuota,omitempty" protobuf:"varint,2,opt,name=cpuCFSQuota"`
// CPUManagerPolicy allows to set alternative CPU management policies (default: none).
// +optional
CPUManagerPolicy *string `json:"cpuManagerPolicy,omitempty" protobuf:"bytes,3,opt,name=cpuManagerPolicy"`
// EvictionHard describes a set of eviction thresholds (e.g. memory.available<1Gi) that if met would trigger a Pod eviction.
// +optional
// Default:
// memory.available: "100Mi/1Gi/5%"
// nodefs.available: "5%"
// nodefs.inodesFree: "5%"
// imagefs.available: "5%"
// imagefs.inodesFree: "5%"
EvictionHard *KubeletConfigEviction `json:"evictionHard,omitempty" protobuf:"bytes,4,opt,name=evictionHard"`
// EvictionMaxPodGracePeriod describes the maximum allowed grace period (in seconds) to use when terminating pods in response to a soft eviction threshold being met.
// +optional
// Default: 90
EvictionMaxPodGracePeriod *int32 `json:"evictionMaxPodGracePeriod,omitempty" protobuf:"varint,5,opt,name=evictionMaxPodGracePeriod"`
// EvictionMinimumReclaim configures the amount of resources below the configured eviction threshold that the kubelet attempts to reclaim whenever the kubelet observes resource pressure.
// +optional
// Default: 0 for each resource
EvictionMinimumReclaim *KubeletConfigEvictionMinimumReclaim `json:"evictionMinimumReclaim,omitempty" protobuf:"bytes,6,opt,name=evictionMinimumReclaim"`
// EvictionPressureTransitionPeriod is the duration for which the kubelet has to wait before transitioning out of an eviction pressure condition.
// +optional
// Default: 4m0s
EvictionPressureTransitionPeriod *metav1.Duration `json:"evictionPressureTransitionPeriod,omitempty" protobuf:"bytes,7,opt,name=evictionPressureTransitionPeriod"`
// EvictionSoft describes a set of eviction thresholds (e.g. memory.available<1.5Gi) that if met over a corresponding grace period would trigger a Pod eviction.
// +optional
// Default:
// memory.available: "200Mi/1.5Gi/10%"
// nodefs.available: "10%"
// nodefs.inodesFree: "10%"
// imagefs.available: "10%"
// imagefs.inodesFree: "10%"
EvictionSoft *KubeletConfigEviction `json:"evictionSoft,omitempty" protobuf:"bytes,8,opt,name=evictionSoft"`
// EvictionSoftGracePeriod describes a set of eviction grace periods (e.g. memory.available=1m30s) that correspond to how long a soft eviction threshold must hold before triggering a Pod eviction.
// +optional
// Default:
// memory.available: 1m30s
// nodefs.available: 1m30s
// nodefs.inodesFree: 1m30s
// imagefs.available: 1m30s
// imagefs.inodesFree: 1m30s
EvictionSoftGracePeriod *KubeletConfigEvictionSoftGracePeriod `json:"evictionSoftGracePeriod,omitempty" protobuf:"bytes,9,opt,name=evictionSoftGracePeriod"`
// MaxPods is the maximum number of Pods that are allowed by the Kubelet.
// +optional
// Default: 110
MaxPods *int32 `json:"maxPods,omitempty" protobuf:"varint,10,opt,name=maxPods"`
// PodPIDsLimit is the maximum number of process IDs per pod allowed by the kubelet.
// +optional
PodPIDsLimit *int64 `json:"podPidsLimit,omitempty" protobuf:"varint,11,opt,name=podPidsLimit"`
// ImagePullProgressDeadline describes the time limit under which if no pulling progress is made, the image pulling will be cancelled.
// +optional
// Default: 1m
ImagePullProgressDeadline *metav1.Duration `json:"imagePullProgressDeadline,omitempty" protobuf:"bytes,12,opt,name=imagePullProgressDeadline"`
// FailSwapOn makes the Kubelet fail to start if swap is enabled on the node. (default true).
// +optional
FailSwapOn *bool `json:"failSwapOn,omitempty" protobuf:"varint,13,opt,name=failSwapOn"`
// KubeReserved is the configuration for resources reserved for kubernetes node components (mainly kubelet and container runtime).
// When updating these values, be aware that cgroup resizes may not succeed on active worker nodes. Look for the NodeAllocatableEnforced event to determine if the configuration was applied.
// +optional
// Default: cpu=80m,memory=1Gi,pid=20k
KubeReserved *KubeletConfigReserved `json:"kubeReserved,omitempty" protobuf:"bytes,14,opt,name=kubeReserved"`
// SystemReserved is the configuration for resources reserved for system processes not managed by kubernetes (e.g. journald).
// When updating these values, be aware that cgroup resizes may not succeed on active worker nodes. Look for the NodeAllocatableEnforced event to determine if the configuration was applied.
// +optional
SystemReserved *KubeletConfigReserved `json:"systemReserved,omitempty" protobuf:"bytes,15,opt,name=systemReserved"`
// ImageGCHighThresholdPercent describes the percent of the disk usage which triggers image garbage collection.
// +optional
// Default: 50
ImageGCHighThresholdPercent *int32 `json:"imageGCHighThresholdPercent,omitempty" protobuf:"bytes,16,opt,name=imageGCHighThresholdPercent"`
// ImageGCLowThresholdPercent describes the percent of the disk to which garbage collection attempts to free.
// +optional
// Default: 40
ImageGCLowThresholdPercent *int32 `json:"imageGCLowThresholdPercent,omitempty" protobuf:"bytes,17,opt,name=imageGCLowThresholdPercent"`
// SerializeImagePulls describes whether the images are pulled one at a time.
// +optional
// Default: true
SerializeImagePulls *bool `json:"serializeImagePulls,omitempty" protobuf:"varint,18,opt,name=serializeImagePulls"`
}
// KubeletConfigEviction contains kubelet eviction thresholds supporting either a resource.Quantity or a percentage based value.
type KubeletConfigEviction struct {
// MemoryAvailable is the threshold for the free memory on the host server.
// +optional
MemoryAvailable *string `json:"memoryAvailable,omitempty" protobuf:"bytes,1,opt,name=memoryAvailable"`
// ImageFSAvailable is the threshold for the free disk space in the imagefs filesystem (docker images and container writable layers).
// +optional
ImageFSAvailable *string `json:"imageFSAvailable,omitempty" protobuf:"bytes,2,opt,name=imageFSAvailable"`
// ImageFSInodesFree is the threshold for the available inodes in the imagefs filesystem.
// +optional
ImageFSInodesFree *string `json:"imageFSInodesFree,omitempty" protobuf:"bytes,3,opt,name=imageFSInodesFree"`
// NodeFSAvailable is the threshold for the free disk space in the nodefs filesystem (docker volumes, logs, etc).
// +optional
NodeFSAvailable *string `json:"nodeFSAvailable,omitempty" protobuf:"bytes,4,opt,name=nodeFSAvailable"`
// NodeFSInodesFree is the threshold for the available inodes in the nodefs filesystem.
// +optional
NodeFSInodesFree *string `json:"nodeFSInodesFree,omitempty" protobuf:"bytes,5,opt,name=nodeFSInodesFree"`
}
// KubeletConfigEvictionMinimumReclaim contains configuration for the kubelet eviction minimum reclaim.
type KubeletConfigEvictionMinimumReclaim struct {
// MemoryAvailable is the threshold for the memory reclaim on the host server.
// +optional
MemoryAvailable *resource.Quantity `json:"memoryAvailable,omitempty" protobuf:"bytes,1,opt,name=memoryAvailable"`
// ImageFSAvailable is the threshold for the disk space reclaim in the imagefs filesystem (docker images and container writable layers).
// +optional
ImageFSAvailable *resource.Quantity `json:"imageFSAvailable,omitempty" protobuf:"bytes,2,opt,name=imageFSAvailable"`
// ImageFSInodesFree is the threshold for the inodes reclaim in the imagefs filesystem.
// +optional
ImageFSInodesFree *resource.Quantity `json:"imageFSInodesFree,omitempty" protobuf:"bytes,3,opt,name=imageFSInodesFree"`
// NodeFSAvailable is the threshold for the disk space reclaim in the nodefs filesystem (docker volumes, logs, etc).
// +optional
NodeFSAvailable *resource.Quantity `json:"nodeFSAvailable,omitempty" protobuf:"bytes,4,opt,name=nodeFSAvailable"`
// NodeFSInodesFree is the threshold for the inodes reclaim in the nodefs filesystem.
// +optional
NodeFSInodesFree *resource.Quantity `json:"nodeFSInodesFree,omitempty" protobuf:"bytes,5,opt,name=nodeFSInodesFree"`
}
// KubeletConfigEvictionSoftGracePeriod contains grace periods for kubelet eviction thresholds.
type KubeletConfigEvictionSoftGracePeriod struct {
// MemoryAvailable is the grace period for the MemoryAvailable eviction threshold.
// +optional
MemoryAvailable *metav1.Duration `json:"memoryAvailable,omitempty" protobuf:"bytes,1,opt,name=memoryAvailable"`
// ImageFSAvailable is the grace period for the ImageFSAvailable eviction threshold.
// +optional
ImageFSAvailable *metav1.Duration `json:"imageFSAvailable,omitempty" protobuf:"bytes,2,opt,name=imageFSAvailable"`
// ImageFSInodesFree is the grace period for the ImageFSInodesFree eviction threshold.