102 lines
4.6 KiB
Go
102 lines
4.6 KiB
Go
/*
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Copyright 2021 The Karmada 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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package features
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import (
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"k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/component-base/featuregate"
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)
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const (
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// Failover controls whether the scheduler should reschedule
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// workloads on cluster failure.
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// When enabled, Karmada will automatically migrate workloads
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// from a failed cluster to other available clusters.
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//
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// Note: This feature does not control application failover,
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// which is managed separately via the PropagationPolicy or
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// ClusterPropagationPolicy.
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Failover featuregate.Feature = "Failover"
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// GracefulEviction controls whether to perform graceful evictions
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// during both cluster failover and application failover.
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// When used for cluster failover, it takes effect only when the
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// Failover feature is enabled.
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// Graceful eviction ensures that workloads are migrated in a
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// controlled manner, minimizing disruption to applications.
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GracefulEviction featuregate.Feature = "GracefulEviction"
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// PropagateDeps indicates if relevant resources should be propagated automatically
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PropagateDeps featuregate.Feature = "PropagateDeps"
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// CustomizedClusterResourceModeling indicates if enable cluster resource custom modeling.
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CustomizedClusterResourceModeling featuregate.Feature = "CustomizedClusterResourceModeling"
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// PolicyPreemption indicates if high-priority PropagationPolicy/ClusterPropagationPolicy could preempt resource templates which are matched by low-priority PropagationPolicy/ClusterPropagationPolicy.
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PolicyPreemption featuregate.Feature = "PropagationPolicyPreemption"
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// MultiClusterService indicates if enable multi-cluster service function.
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MultiClusterService featuregate.Feature = "MultiClusterService"
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// ResourceQuotaEstimate indicates if enable resource quota check in estimator
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ResourceQuotaEstimate featuregate.Feature = "ResourceQuotaEstimate"
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// StatefulFailoverInjection controls whether Karmada collects state information
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// from the source cluster during a failover event for stateful applications and
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// injects this information into the application configuration when it is moved
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// to the target cluster.
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//
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// owner: @mszacillo, @XiShanYongYe-Chang
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// alpha: v1.12
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StatefulFailoverInjection featuregate.Feature = "StatefulFailoverInjection"
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// PriorityBasedScheduling controls whether the Priority-Based Scheduling feature is enabled.
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// When enabled, the scheduler prioritizes applications with higher priority values, ensuring they
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// are scheduled before lower-priority ones. This is useful for cluster environments where critical
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// workloads must be processed first to meet SLA requirements.
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//
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// owner: @LeonZh0u, @seanlaii, @wengyao04, @whitewindmills, @zclyne
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// alpha: v1.13
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PriorityBasedScheduling featuregate.Feature = "PriorityBasedScheduling"
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)
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var (
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// FeatureGate is a shared global FeatureGate.
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FeatureGate featuregate.MutableFeatureGate = featuregate.NewFeatureGate()
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// DefaultFeatureGates is the default feature gates of Karmada.
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DefaultFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
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// Failover(cluster failover) is disabled by default because it involves migrating
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// all resources in the cluster, which can have significant impacts, it should be
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// explicitly enabled by administrators after fully evaluation to avoid unexpected
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// incidents.
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Failover: {Default: false, PreRelease: featuregate.Beta},
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GracefulEviction: {Default: true, PreRelease: featuregate.Beta},
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PropagateDeps: {Default: true, PreRelease: featuregate.Beta},
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CustomizedClusterResourceModeling: {Default: true, PreRelease: featuregate.Beta},
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PolicyPreemption: {Default: false, PreRelease: featuregate.Alpha},
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MultiClusterService: {Default: false, PreRelease: featuregate.Alpha},
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ResourceQuotaEstimate: {Default: false, PreRelease: featuregate.Alpha},
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StatefulFailoverInjection: {Default: false, PreRelease: featuregate.Alpha},
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PriorityBasedScheduling: {Default: false, PreRelease: featuregate.Alpha},
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}
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)
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func init() {
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runtime.Must(FeatureGate.Add(DefaultFeatureGates))
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}
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