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494 lines
21 KiB
Protocol Buffer
494 lines
21 KiB
Protocol Buffer
/*
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Copyright The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// This file was autogenerated by go-to-protobuf. Do not edit it manually!
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syntax = "proto2";
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package k8s.io.api.autoscaling.v2beta2;
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import "k8s.io/api/core/v1/generated.proto";
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import "k8s.io/apimachinery/pkg/api/resource/generated.proto";
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import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto";
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import "k8s.io/apimachinery/pkg/runtime/generated.proto";
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import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";
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// Package-wide variables from generator "generated".
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option go_package = "v2beta2";
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// ContainerResourceMetricSource indicates how to scale on a resource metric known to
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// Kubernetes, as specified in requests and limits, describing each pod in the
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// current scale target (e.g. CPU or memory). The values will be averaged
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// together before being compared to the target. Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available to
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// normal per-pod metrics using the "pods" source. Only one "target" type
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// should be set.
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message ContainerResourceMetricSource {
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// name is the name of the resource in question.
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optional string name = 1;
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// target specifies the target value for the given metric
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optional MetricTarget target = 2;
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// container is the name of the container in the pods of the scaling target
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optional string container = 3;
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}
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// ContainerResourceMetricStatus indicates the current value of a resource metric known to
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// Kubernetes, as specified in requests and limits, describing a single container in each pod in the
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// current scale target (e.g. CPU or memory). Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available to
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// normal per-pod metrics using the "pods" source.
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message ContainerResourceMetricStatus {
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// Name is the name of the resource in question.
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optional string name = 1;
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// current contains the current value for the given metric
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optional MetricValueStatus current = 2;
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// Container is the name of the container in the pods of the scaling target
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optional string container = 3;
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}
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// CrossVersionObjectReference contains enough information to let you identify the referred resource.
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message CrossVersionObjectReference {
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// Kind of the referent; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds"
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optional string kind = 1;
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// Name of the referent; More info: http://kubernetes.io/docs/user-guide/identifiers#names
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optional string name = 2;
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// API version of the referent
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// +optional
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optional string apiVersion = 3;
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}
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// ExternalMetricSource indicates how to scale on a metric not associated with
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// any Kubernetes object (for example length of queue in cloud
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// messaging service, or QPS from loadbalancer running outside of cluster).
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message ExternalMetricSource {
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 1;
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// target specifies the target value for the given metric
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optional MetricTarget target = 2;
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}
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// ExternalMetricStatus indicates the current value of a global metric
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// not associated with any Kubernetes object.
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message ExternalMetricStatus {
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 1;
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// current contains the current value for the given metric
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optional MetricValueStatus current = 2;
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}
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// HPAScalingPolicy is a single policy which must hold true for a specified past interval.
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message HPAScalingPolicy {
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// Type is used to specify the scaling policy.
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optional string type = 1;
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// Value contains the amount of change which is permitted by the policy.
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// It must be greater than zero
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optional int32 value = 2;
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// PeriodSeconds specifies the window of time for which the policy should hold true.
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// PeriodSeconds must be greater than zero and less than or equal to 1800 (30 min).
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optional int32 periodSeconds = 3;
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}
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// HPAScalingRules configures the scaling behavior for one direction.
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// These Rules are applied after calculating DesiredReplicas from metrics for the HPA.
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// They can limit the scaling velocity by specifying scaling policies.
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// They can prevent flapping by specifying the stabilization window, so that the
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// number of replicas is not set instantly, instead, the safest value from the stabilization
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// window is chosen.
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message HPAScalingRules {
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// StabilizationWindowSeconds is the number of seconds for which past recommendations should be
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// considered while scaling up or scaling down.
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// StabilizationWindowSeconds must be greater than or equal to zero and less than or equal to 3600 (one hour).
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// If not set, use the default values:
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// - For scale up: 0 (i.e. no stabilization is done).
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// - For scale down: 300 (i.e. the stabilization window is 300 seconds long).
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// +optional
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optional int32 stabilizationWindowSeconds = 3;
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// selectPolicy is used to specify which policy should be used.
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// If not set, the default value MaxPolicySelect is used.
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// +optional
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optional string selectPolicy = 1;
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// policies is a list of potential scaling polices which can be used during scaling.
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// At least one policy must be specified, otherwise the HPAScalingRules will be discarded as invalid
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// +optional
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repeated HPAScalingPolicy policies = 2;
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}
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// HorizontalPodAutoscaler is the configuration for a horizontal pod
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// autoscaler, which automatically manages the replica count of any resource
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// implementing the scale subresource based on the metrics specified.
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message HorizontalPodAutoscaler {
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// metadata is the standard object metadata.
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// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
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// +optional
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optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
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// spec is the specification for the behaviour of the autoscaler.
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// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status.
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// +optional
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optional HorizontalPodAutoscalerSpec spec = 2;
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// status is the current information about the autoscaler.
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// +optional
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optional HorizontalPodAutoscalerStatus status = 3;
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}
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// HorizontalPodAutoscalerBehavior configures the scaling behavior of the target
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// in both Up and Down directions (scaleUp and scaleDown fields respectively).
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message HorizontalPodAutoscalerBehavior {
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// scaleUp is scaling policy for scaling Up.
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// If not set, the default value is the higher of:
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// * increase no more than 4 pods per 60 seconds
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// * double the number of pods per 60 seconds
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// No stabilization is used.
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// +optional
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optional HPAScalingRules scaleUp = 1;
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// scaleDown is scaling policy for scaling Down.
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// If not set, the default value is to allow to scale down to minReplicas pods, with a
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// 300 second stabilization window (i.e., the highest recommendation for
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// the last 300sec is used).
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// +optional
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optional HPAScalingRules scaleDown = 2;
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}
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// HorizontalPodAutoscalerCondition describes the state of
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// a HorizontalPodAutoscaler at a certain point.
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message HorizontalPodAutoscalerCondition {
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// type describes the current condition
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optional string type = 1;
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// status is the status of the condition (True, False, Unknown)
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optional string status = 2;
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// lastTransitionTime is the last time the condition transitioned from
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// one status to another
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// +optional
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optional k8s.io.apimachinery.pkg.apis.meta.v1.Time lastTransitionTime = 3;
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// reason is the reason for the condition's last transition.
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// +optional
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optional string reason = 4;
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// message is a human-readable explanation containing details about
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// the transition
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// +optional
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optional string message = 5;
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}
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// HorizontalPodAutoscalerList is a list of horizontal pod autoscaler objects.
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message HorizontalPodAutoscalerList {
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// metadata is the standard list metadata.
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// +optional
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optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
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// items is the list of horizontal pod autoscaler objects.
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repeated HorizontalPodAutoscaler items = 2;
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}
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// HorizontalPodAutoscalerSpec describes the desired functionality of the HorizontalPodAutoscaler.
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message HorizontalPodAutoscalerSpec {
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// scaleTargetRef points to the target resource to scale, and is used to the pods for which metrics
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// should be collected, as well as to actually change the replica count.
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optional CrossVersionObjectReference scaleTargetRef = 1;
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// minReplicas is the lower limit for the number of replicas to which the autoscaler
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// can scale down. It defaults to 1 pod. minReplicas is allowed to be 0 if the
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// alpha feature gate HPAScaleToZero is enabled and at least one Object or External
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// metric is configured. Scaling is active as long as at least one metric value is
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// available.
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// +optional
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optional int32 minReplicas = 2;
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// maxReplicas is the upper limit for the number of replicas to which the autoscaler can scale up.
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// It cannot be less that minReplicas.
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optional int32 maxReplicas = 3;
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// metrics contains the specifications for which to use to calculate the
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// desired replica count (the maximum replica count across all metrics will
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// be used). The desired replica count is calculated multiplying the
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// ratio between the target value and the current value by the current
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// number of pods. Ergo, metrics used must decrease as the pod count is
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// increased, and vice-versa. See the individual metric source types for
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// more information about how each type of metric must respond.
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// If not set, the default metric will be set to 80% average CPU utilization.
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// +optional
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repeated MetricSpec metrics = 4;
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// behavior configures the scaling behavior of the target
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// in both Up and Down directions (scaleUp and scaleDown fields respectively).
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// If not set, the default HPAScalingRules for scale up and scale down are used.
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// +optional
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optional HorizontalPodAutoscalerBehavior behavior = 5;
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}
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// HorizontalPodAutoscalerStatus describes the current status of a horizontal pod autoscaler.
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message HorizontalPodAutoscalerStatus {
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// observedGeneration is the most recent generation observed by this autoscaler.
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// +optional
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optional int64 observedGeneration = 1;
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// lastScaleTime is the last time the HorizontalPodAutoscaler scaled the number of pods,
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// used by the autoscaler to control how often the number of pods is changed.
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// +optional
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optional k8s.io.apimachinery.pkg.apis.meta.v1.Time lastScaleTime = 2;
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// currentReplicas is current number of replicas of pods managed by this autoscaler,
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// as last seen by the autoscaler.
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optional int32 currentReplicas = 3;
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// desiredReplicas is the desired number of replicas of pods managed by this autoscaler,
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// as last calculated by the autoscaler.
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optional int32 desiredReplicas = 4;
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// currentMetrics is the last read state of the metrics used by this autoscaler.
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// +optional
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repeated MetricStatus currentMetrics = 5;
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// conditions is the set of conditions required for this autoscaler to scale its target,
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// and indicates whether or not those conditions are met.
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repeated HorizontalPodAutoscalerCondition conditions = 6;
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}
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// MetricIdentifier defines the name and optionally selector for a metric
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message MetricIdentifier {
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// name is the name of the given metric
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optional string name = 1;
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// selector is the string-encoded form of a standard kubernetes label selector for the given metric
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// When set, it is passed as an additional parameter to the metrics server for more specific metrics scoping.
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// When unset, just the metricName will be used to gather metrics.
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// +optional
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optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector selector = 2;
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}
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// MetricSpec specifies how to scale based on a single metric
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// (only `type` and one other matching field should be set at once).
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message MetricSpec {
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// type is the type of metric source. It should be one of "ContainerResource", "External",
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// "Object", "Pods" or "Resource", each mapping to a matching field in the object.
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// Note: "ContainerResource" type is available on when the feature-gate
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// HPAContainerMetrics is enabled
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optional string type = 1;
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// object refers to a metric describing a single kubernetes object
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// (for example, hits-per-second on an Ingress object).
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// +optional
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optional ObjectMetricSource object = 2;
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// pods refers to a metric describing each pod in the current scale target
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// (for example, transactions-processed-per-second). The values will be
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// averaged together before being compared to the target value.
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// +optional
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optional PodsMetricSource pods = 3;
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// resource refers to a resource metric (such as those specified in
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// requests and limits) known to Kubernetes describing each pod in the
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// current scale target (e.g. CPU or memory). Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available
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// to normal per-pod metrics using the "pods" source.
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// +optional
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optional ResourceMetricSource resource = 4;
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// container resource refers to a resource metric (such as those specified in
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// requests and limits) known to Kubernetes describing a single container in
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// each pod of the current scale target (e.g. CPU or memory). Such metrics are
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// built in to Kubernetes, and have special scaling options on top of those
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// available to normal per-pod metrics using the "pods" source.
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// This is an alpha feature and can be enabled by the HPAContainerMetrics feature flag.
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// +optional
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optional ContainerResourceMetricSource containerResource = 7;
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// external refers to a global metric that is not associated
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// with any Kubernetes object. It allows autoscaling based on information
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// coming from components running outside of cluster
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// (for example length of queue in cloud messaging service, or
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// QPS from loadbalancer running outside of cluster).
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// +optional
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optional ExternalMetricSource external = 5;
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}
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// MetricStatus describes the last-read state of a single metric.
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message MetricStatus {
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// type is the type of metric source. It will be one of "ContainerResource", "External",
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// "Object", "Pods" or "Resource", each corresponds to a matching field in the object.
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// Note: "ContainerResource" type is available on when the feature-gate
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// HPAContainerMetrics is enabled
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optional string type = 1;
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// object refers to a metric describing a single kubernetes object
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// (for example, hits-per-second on an Ingress object).
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// +optional
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optional ObjectMetricStatus object = 2;
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// pods refers to a metric describing each pod in the current scale target
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// (for example, transactions-processed-per-second). The values will be
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// averaged together before being compared to the target value.
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// +optional
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optional PodsMetricStatus pods = 3;
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// resource refers to a resource metric (such as those specified in
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// requests and limits) known to Kubernetes describing each pod in the
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// current scale target (e.g. CPU or memory). Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available
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// to normal per-pod metrics using the "pods" source.
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// +optional
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optional ResourceMetricStatus resource = 4;
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// container resource refers to a resource metric (such as those specified in
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// requests and limits) known to Kubernetes describing a single container in each pod in the
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// current scale target (e.g. CPU or memory). Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available
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// to normal per-pod metrics using the "pods" source.
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// +optional
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optional ContainerResourceMetricStatus containerResource = 7;
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// external refers to a global metric that is not associated
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// with any Kubernetes object. It allows autoscaling based on information
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// coming from components running outside of cluster
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// (for example length of queue in cloud messaging service, or
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// QPS from loadbalancer running outside of cluster).
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// +optional
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optional ExternalMetricStatus external = 5;
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}
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// MetricTarget defines the target value, average value, or average utilization of a specific metric
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message MetricTarget {
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// type represents whether the metric type is Utilization, Value, or AverageValue
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optional string type = 1;
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// value is the target value of the metric (as a quantity).
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// +optional
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optional k8s.io.apimachinery.pkg.api.resource.Quantity value = 2;
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// averageValue is the target value of the average of the
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// metric across all relevant pods (as a quantity)
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// +optional
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optional k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 3;
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// averageUtilization is the target value of the average of the
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// resource metric across all relevant pods, represented as a percentage of
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// the requested value of the resource for the pods.
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// Currently only valid for Resource metric source type
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// +optional
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optional int32 averageUtilization = 4;
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}
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// MetricValueStatus holds the current value for a metric
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message MetricValueStatus {
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// value is the current value of the metric (as a quantity).
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// +optional
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optional k8s.io.apimachinery.pkg.api.resource.Quantity value = 1;
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// averageValue is the current value of the average of the
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// metric across all relevant pods (as a quantity)
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// +optional
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optional k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 2;
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// currentAverageUtilization is the current value of the average of the
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// resource metric across all relevant pods, represented as a percentage of
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// the requested value of the resource for the pods.
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// +optional
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optional int32 averageUtilization = 3;
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}
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// ObjectMetricSource indicates how to scale on a metric describing a
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// kubernetes object (for example, hits-per-second on an Ingress object).
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message ObjectMetricSource {
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optional CrossVersionObjectReference describedObject = 1;
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// target specifies the target value for the given metric
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optional MetricTarget target = 2;
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 3;
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}
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// ObjectMetricStatus indicates the current value of a metric describing a
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// kubernetes object (for example, hits-per-second on an Ingress object).
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message ObjectMetricStatus {
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 1;
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// current contains the current value for the given metric
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optional MetricValueStatus current = 2;
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optional CrossVersionObjectReference describedObject = 3;
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}
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// PodsMetricSource indicates how to scale on a metric describing each pod in
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// the current scale target (for example, transactions-processed-per-second).
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// The values will be averaged together before being compared to the target
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// value.
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message PodsMetricSource {
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 1;
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// target specifies the target value for the given metric
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optional MetricTarget target = 2;
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}
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// PodsMetricStatus indicates the current value of a metric describing each pod in
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// the current scale target (for example, transactions-processed-per-second).
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message PodsMetricStatus {
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// metric identifies the target metric by name and selector
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optional MetricIdentifier metric = 1;
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// current contains the current value for the given metric
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optional MetricValueStatus current = 2;
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}
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// ResourceMetricSource indicates how to scale on a resource metric known to
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// Kubernetes, as specified in requests and limits, describing each pod in the
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// current scale target (e.g. CPU or memory). The values will be averaged
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|
// together before being compared to the target. Such metrics are built in to
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|
// Kubernetes, and have special scaling options on top of those available to
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|
// normal per-pod metrics using the "pods" source. Only one "target" type
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// should be set.
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|
message ResourceMetricSource {
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// name is the name of the resource in question.
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optional string name = 1;
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// target specifies the target value for the given metric
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optional MetricTarget target = 2;
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}
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// ResourceMetricStatus indicates the current value of a resource metric known to
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// Kubernetes, as specified in requests and limits, describing each pod in the
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// current scale target (e.g. CPU or memory). Such metrics are built in to
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// Kubernetes, and have special scaling options on top of those available to
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// normal per-pod metrics using the "pods" source.
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message ResourceMetricStatus {
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// Name is the name of the resource in question.
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optional string name = 1;
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// current contains the current value for the given metric
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optional MetricValueStatus current = 2;
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}
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