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Merge pull request #128526 from atiratree/deployment-improve-scaling

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simplify ScalingReplicaSet event building in the deployment controller
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Kubernetes Prow Robot 2024-11-04 09:01:28 +00:00 committed by GitHub
commit b845137026
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1 changed files with 9 additions and 12 deletions
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21
pkg/controller/deployment/sync.go
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@ -340,15 +340,12 @@ func (dc *DeploymentController) scale(ctx context.Context, deployment *apps.Depl
// drives what happens in case we are trying to scale replica sets of the same size. // drives what happens in case we are trying to scale replica sets of the same size.
// In such a case when scaling up, we should scale up newer replica sets first, and // In such a case when scaling up, we should scale up newer replica sets first, and
// when scaling down, we should scale down older replica sets first. // when scaling down, we should scale down older replica sets first.
var scalingOperation string
switch { switch {
case deploymentReplicasToAdd > 0: case deploymentReplicasToAdd > 0:
sort.Sort(controller.ReplicaSetsBySizeNewer(allRSs)) sort.Sort(controller.ReplicaSetsBySizeNewer(allRSs))
scalingOperation = "up"
case deploymentReplicasToAdd < 0: case deploymentReplicasToAdd < 0:
sort.Sort(controller.ReplicaSetsBySizeOlder(allRSs)) sort.Sort(controller.ReplicaSetsBySizeOlder(allRSs))
scalingOperation = "down"
} }
// Iterate over all active replica sets and estimate proportions for each of them. // Iterate over all active replica sets and estimate proportions for each of them.
@ -386,7 +383,7 @@ func (dc *DeploymentController) scale(ctx context.Context, deployment *apps.Depl
} }
// TODO: Use transactions when we have them. // TODO: Use transactions when we have them.
if _, _, err := dc.scaleReplicaSet(ctx, rs, nameToSize[rs.Name], deployment, scalingOperation); err != nil { if _, _, err := dc.scaleReplicaSet(ctx, rs, nameToSize[rs.Name], deployment); err != nil {
// Return as soon as we fail, the deployment is requeued // Return as soon as we fail, the deployment is requeued
return err return err
} }
@ -400,17 +397,11 @@ func (dc *DeploymentController) scaleReplicaSetAndRecordEvent(ctx context.Contex
if *(rs.Spec.Replicas) == newScale { if *(rs.Spec.Replicas) == newScale {
return false, rs, nil return false, rs, nil
} }
var scalingOperation string scaled, newRS, err := dc.scaleReplicaSet(ctx, rs, newScale, deployment)
if *(rs.Spec.Replicas) < newScale {
scalingOperation = "up"
} else {
scalingOperation = "down"
}
scaled, newRS, err := dc.scaleReplicaSet(ctx, rs, newScale, deployment, scalingOperation)
return scaled, newRS, err return scaled, newRS, err
} }
func (dc *DeploymentController) scaleReplicaSet(ctx context.Context, rs *apps.ReplicaSet, newScale int32, deployment *apps.Deployment, scalingOperation string) (bool, *apps.ReplicaSet, error) { func (dc *DeploymentController) scaleReplicaSet(ctx context.Context, rs *apps.ReplicaSet, newScale int32, deployment *apps.Deployment) (bool, *apps.ReplicaSet, error) {
sizeNeedsUpdate := *(rs.Spec.Replicas) != newScale sizeNeedsUpdate := *(rs.Spec.Replicas) != newScale
@ -425,6 +416,12 @@ func (dc *DeploymentController) scaleReplicaSet(ctx context.Context, rs *apps.Re
deploymentutil.SetReplicasAnnotations(rsCopy, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+deploymentutil.MaxSurge(*deployment)) deploymentutil.SetReplicasAnnotations(rsCopy, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+deploymentutil.MaxSurge(*deployment))
rs, err = dc.client.AppsV1().ReplicaSets(rsCopy.Namespace).Update(ctx, rsCopy, metav1.UpdateOptions{}) rs, err = dc.client.AppsV1().ReplicaSets(rsCopy.Namespace).Update(ctx, rsCopy, metav1.UpdateOptions{})
if err == nil && sizeNeedsUpdate { if err == nil && sizeNeedsUpdate {
var scalingOperation string
if oldScale < newScale {
scalingOperation = "up"
} else {
scalingOperation = "down"
}
scaled = true scaled = true
dc.eventRecorder.Eventf(deployment, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s from %d to %d", scalingOperation, rs.Name, oldScale, newScale) dc.eventRecorder.Eventf(deployment, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s from %d to %d", scalingOperation, rs.Name, oldScale, newScale)
} }