Merge pull request #3399 from Poor12/binding-api-change
Binding API modification adaptation to implement application failover
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karmada-bot
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@ -16756,6 +16756,10 @@
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"$ref": "#/definitions/com.github.karmada-io.karmada.pkg.apis.work.v1alpha2.TargetCluster"
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}
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},
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"failover": {
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"description": "Failover indicates how Karmada migrates applications in case of failures. It inherits directly from the associated PropagationPolicy(or ClusterPropagationPolicy).",
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"$ref": "#/definitions/com.github.karmada-io.karmada.pkg.apis.policy.v1alpha1.FailoverBehavior"
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},
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"gracefulEvictionTasks": {
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"description": "GracefulEvictionTasks holds the eviction tasks that are expected to perform the eviction in a graceful way. The intended workflow is: 1. Once the controller(such as 'taint-manager') decided to evict the resource that\n is referenced by current ResourceBinding or ClusterResourceBinding from a target\n cluster, it removes(or scale down the replicas) the target from Clusters(.spec.Clusters)\n and builds a graceful eviction task.\n2. The scheduler may perform a re-scheduler and probably select a substitute cluster\n to take over the evicting workload(resource).\n3. The graceful eviction controller takes care of the graceful eviction tasks and\n performs the final removal after the workload(resource) is available on the substitute\n cluster or exceed the grace termination period(defaults to 10 minutes).",
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"type": "array",
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@ -264,6 +264,81 @@ spec:
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- name
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type: object
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type: array
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failover:
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description: Failover indicates how Karmada migrates applications
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in case of failures. It inherits directly from the associated PropagationPolicy(or
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ClusterPropagationPolicy).
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properties:
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application:
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description: Application indicates failover behaviors in case
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of application failure. If this value is nil, failover is disabled.
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If set, the PropagateDeps should be true so that the dependencies
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could be migrated along with the application.
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properties:
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blockPredecessorSeconds:
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default: 600
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description: BlockPredecessorSeconds represents the period
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of time the cluster from which the application was migrated
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from can be schedulable again. During the period of BlockPredecessorSeconds,
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clusters are forcibly filtered out by the scheduler. If
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not specified or the value is zero, the evicted cluster
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is schedulable to the application when rescheduling. Defaults
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to 600s.
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format: int32
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type: integer
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decisionConditions:
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description: 'DecisionConditions indicates the decision conditions
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of performing the failover process. Only when all conditions
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are met can the failover process be performed. Currently,
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DecisionConditions includes several conditions: - TolerationSeconds
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(optional) - HealthyState (mandatory)'
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properties:
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tolerationSeconds:
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default: 300
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description: TolerationSeconds represents the period of
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time Karmada should wait after reaching the desired
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state before performing failover process. If not specified,
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Karmada will immediately perform failover process. Defaults
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to 300s.
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format: int32
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type: integer
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type: object
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preConditions:
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description: 'PreConditions indicates the preconditions of
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the failover process. If specified, only when all conditions
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are met can the failover process be started. Currently,
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PreConditions includes several conditions: - DelaySeconds
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(optional) - HealthyState (optional)'
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properties:
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delaySeconds:
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description: DelaySeconds refers to a period of time after
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the control plane collects the status of the application
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for the first time. If specified, the failover process
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will be started after DelaySeconds is reached. It can
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be used simultaneously with HealthyState and does not
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affect each other.
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format: int32
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type: integer
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healthyState:
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description: HealthyState refers to the healthy status
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reported by the Karmada resource interpreter. Valid
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option is "Healthy". If specified, the failover process
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will be started when the application reaches the healthy
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state. It can be used simultaneously with DelaySeconds
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and does not affect each other.
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type: string
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type: object
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purgeMode:
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default: Graciously
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description: PurgeMode represents how to deal with the legacy
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applications on the cluster from which the application is
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migrated. Valid options are "Immediately", "Graciously"
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and "Never". Defaults to "Graciously".
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type: string
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required:
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- decisionConditions
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type: object
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type: object
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gracefulEvictionTasks:
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description: 'GracefulEvictionTasks holds the eviction tasks that
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are expected to perform the eviction in a graceful way. The intended
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@ -264,6 +264,81 @@ spec:
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- name
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type: object
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type: array
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failover:
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description: Failover indicates how Karmada migrates applications
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in case of failures. It inherits directly from the associated PropagationPolicy(or
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ClusterPropagationPolicy).
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properties:
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application:
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description: Application indicates failover behaviors in case
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of application failure. If this value is nil, failover is disabled.
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If set, the PropagateDeps should be true so that the dependencies
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could be migrated along with the application.
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properties:
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blockPredecessorSeconds:
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default: 600
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description: BlockPredecessorSeconds represents the period
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of time the cluster from which the application was migrated
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from can be schedulable again. During the period of BlockPredecessorSeconds,
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clusters are forcibly filtered out by the scheduler. If
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not specified or the value is zero, the evicted cluster
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is schedulable to the application when rescheduling. Defaults
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to 600s.
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format: int32
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type: integer
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decisionConditions:
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description: 'DecisionConditions indicates the decision conditions
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of performing the failover process. Only when all conditions
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are met can the failover process be performed. Currently,
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DecisionConditions includes several conditions: - TolerationSeconds
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(optional) - HealthyState (mandatory)'
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properties:
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tolerationSeconds:
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default: 300
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description: TolerationSeconds represents the period of
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time Karmada should wait after reaching the desired
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state before performing failover process. If not specified,
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Karmada will immediately perform failover process. Defaults
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to 300s.
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format: int32
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type: integer
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type: object
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preConditions:
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description: 'PreConditions indicates the preconditions of
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the failover process. If specified, only when all conditions
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are met can the failover process be started. Currently,
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PreConditions includes several conditions: - DelaySeconds
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(optional) - HealthyState (optional)'
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properties:
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delaySeconds:
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description: DelaySeconds refers to a period of time after
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the control plane collects the status of the application
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for the first time. If specified, the failover process
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will be started after DelaySeconds is reached. It can
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be used simultaneously with HealthyState and does not
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affect each other.
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format: int32
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type: integer
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healthyState:
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description: HealthyState refers to the healthy status
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reported by the Karmada resource interpreter. Valid
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option is "Healthy". If specified, the failover process
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will be started when the application reaches the healthy
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state. It can be used simultaneously with DelaySeconds
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and does not affect each other.
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type: string
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type: object
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purgeMode:
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default: Graciously
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description: PurgeMode represents how to deal with the legacy
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applications on the cluster from which the application is
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migrated. Valid options are "Immediately", "Graciously"
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and "Never". Defaults to "Graciously".
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type: string
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required:
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- decisionConditions
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type: object
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type: object
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gracefulEvictionTasks:
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description: 'GracefulEvictionTasks holds the eviction tasks that
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are expected to perform the eviction in a graceful way. The intended
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@ -102,6 +102,11 @@ type ResourceBindingSpec struct {
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// It inherits directly from the associated PropagationPolicy(or ClusterPropagationPolicy).
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// +optional
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SchedulerName string `json:"schedulerName,omitempty"`
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// Failover indicates how Karmada migrates applications in case of failures.
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// It inherits directly from the associated PropagationPolicy(or ClusterPropagationPolicy).
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// +optional
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Failover *policyv1alpha1.FailoverBehavior `json:"failover,omitempty"`
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}
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// ObjectReference contains enough information to locate the referenced object inside current cluster.
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@ -260,6 +265,7 @@ type AggregatedStatusItem struct {
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// +kubebuilder:pruning:PreserveUnknownFields
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// +optional
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Status *runtime.RawExtension `json:"status,omitempty"`
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// Applied represents if the resource referencing by ResourceBinding or ClusterResourceBinding
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// is successfully applied on the cluster.
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// +optional
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@ -310,6 +310,11 @@ func (in *ResourceBindingSpec) DeepCopyInto(out *ResourceBindingSpec) {
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(*in)[i].DeepCopyInto(&(*out)[i])
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}
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}
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if in.Failover != nil {
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in, out := &in.Failover, &out.Failover
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*out = new(v1alpha1.FailoverBehavior)
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(*in).DeepCopyInto(*out)
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}
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return
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}
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@ -5452,12 +5452,18 @@ func schema_pkg_apis_work_v1alpha2_ResourceBindingSpec(ref common.ReferenceCallb
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Format: "",
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},
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},
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"failover": {
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SchemaProps: spec.SchemaProps{
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Description: "Failover indicates how Karmada migrates applications in case of failures. It inherits directly from the associated PropagationPolicy(or ClusterPropagationPolicy).",
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Ref: ref("github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1.FailoverBehavior"),
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},
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},
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},
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Required: []string{"resource"},
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},
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},
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Dependencies: []string{
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"github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1.Placement", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.BindingSnapshot", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.GracefulEvictionTask", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.ObjectReference", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.ReplicaRequirements", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.TargetCluster"},
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"github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1.FailoverBehavior", "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1.Placement", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.BindingSnapshot", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.GracefulEvictionTask", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.ObjectReference", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.ReplicaRequirements", "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2.TargetCluster"},
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}
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}
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